Article Per Year (5 Year)
p-Index From 2021 - 2026
3.461
P-Index
This Author published in this journals
All Journal ILMU KELAUTAN: Indonesian Journal of Marine Sciences JURNAL KIMIA SAINS DAN APLIKASI Jurnal Ilmu Kimia Universitas Brawijaya Journal of Innovation and Applied Technology Indonesian Green Technology Journal The Journal of Pure and Applied Chemistry Research JURNAL INTEGRASI PROSES Journal of Geoscience, Engineering, Environment, and Technology JFMR (Journal of Fisheries and Marine Research) Indonesian Journal of Chemistry CARADDE: Jurnal Pengabdian Kepada Masyarakat Jurnal Kartika Kimia Molekul: Jurnal Ilmiah Kimia JKPK (Jurnal Kimia dan Pendidikan Kimia) Acta Chimica Asiana Bulletin of Chemical Reaction Engineering & Catalysis Indonesian Mining Journal
Yuniar Ponco Prananto
Department Chemistry, Faculty Of Mathematics And Natural Sciences, University Of Brawijaya, Jl. Veteran 65145, Malang, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Education Energy Engineering Environmental Science Materials Science & Nanotechnology Medicine & Pharmacology Physics Social Sciences Other

Published : 33 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 33 Documents
Search

 1   2   3   4 
OPTIMALISASI PELINDIAN BIJIH MANGAN ASAL TIMOR TENGAH UTARA MENGGUNAKAN H2O2 SEBAGAI PEREDUKSI Faustina De Yesu Prisila Abi; Rachmat Triandi Tjahjanto; Yuniar Ponco Prananto
Indonesian Mining Journal Vol 26 No 1 (2023): Indonesian Mining Journal, April 2023
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol26.No1.2023.1301

Abstract

Optimization of manganese ore leaching process from North Central Timor, Indonesia has been investigated. The final product of the leaching process was MnSO4. Variables that were optimized during the process were volume of H2O2, reaction temperature, and reaction time. The final products were characterized by FTIR, powder-XRD, XRF, and AAS. Experimental data shows that the optimum conditions for the leaching process were 50 mL H2SO4 4 M, 25 mL H2O2 2 M, in which the reaction was done at room temperature for two hours. This optimum condition resulting in 38.2% of Mn extraction with 96.88% purity. Based on powder-XRD, the products were a mixture of crystalline MnSO4.4H2O, MnSO4.5H2O and [NH4]8[Mn8(SO4)12].
Green Hydrothermal Synthesis of Ni(II)-MOF with Terephthalate-Pyrazine Mixed Ligands at Mild Condition Finisia, Yenni; Tjahjanto, Rachmat Triandi; Prananto, Yuniar Ponco
The Journal of Pure and Applied Chemistry Research Vol. 13 No. 2 (2024): Edition May-August 2024
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2024.013.02.6533

Abstract

Ni(II) with mixed ligand of terephthalate-pyrazine (NiTP) metal complex can form metal-organic framework (MOF) material that offer many potential applications, such as adsorbent and/or photocatalyst for dye-based wastewater treatment. Production of the NiTP by hydrothermal method in a larger scale may economically unfavorable due to it requires high temperature and long reaction time. Green synthesis of NiTP by hydrothermal method using lower temperature and shorter reaction time was investigated in this study. The synthesis was done in Ni(II):T:P mol ratio of 1:1:4 at 150 ᵒC for 10 hours. The NiTP complex was characterized by infrared spectroscopy and powder-XRD. Crystallinity degree, thermal stability, band gap energy, and pore volume of the NiTP complex were compared to that of Ni(II)-terephthalate (NiT) complex, which was also made using the same condition, to study the effect of pyrazine addition on the properties of the NiTP. This study finds that the green microcrystalline NiTP complex was successfully obtained from mild reaction condition in good yield and identical to known MOF compound of [Ni(μ3-ter)(μ2-pyr)]n.(ter = terephthalate; pyr = pyrazine). Although the synthesized NiTP complex has lower crystallinity degree compared to the NiT complex, but it has better thermal stability, lower band gap energy, and bigger pore volume; therefore, it is possible to be further developed as adsorbent and/or photocatalyst for wastewater treatment.
Study of inorganic based anti-blocks as migration control of slip additive on surface polyethylene monolayer film Agustina, Laily Aulia; Lestari, Yeni Dwi; Adhinanda, Arrival Arsyad; Ariesta, Muhammad Naufal; Choi, Jonghyun; Prananto, Yuniar Ponco; Febriani, Rakhma
Acta Chimica Asiana Vol. 7 No. 1 (2024)
Publisher : The Indonesian Chemical Society, Chapter Nusa Tenggara and The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v7i1.196

Abstract

Slip migration must be controlled to maintain the performance and quality of flexible packaging. Inorganic based anti-block materials can be used to control the slip migration. This paper reported the effect of anti-block type on the inhibition of slip migration on polyethylene monolayer film. A series of formulations were made with three different anti-block additives, namely talc, natural silica, and synthetic silica, along with erucamide. The optical properties (haze) and friction properties (COF) were measured to assess the film characteristics as the development of slip migration in the presence of anti-block additives. Characterization of the anti-block material was conducted by SEM-EDX, slip additive type was examined by GC-MS, while the slip content on the surface was analysed by FTIR. The result showed that after seven days, synthetic silica anti-block gives COF up to 0.095, with the trace erucamide content on the film surface of 394 ppm, the lowest amongst other types of the anti-block used. The smaller particle size and higher silica content on synthetic silica anti-block resulted in better friction properties which act as a good barrier to limit a migration of erucamide onto the film surface.
Preparation, characterization, and in vitro antibacterial activity of Cu(II)-pyrazinamide complexes, Karti'a, Galuh Wahyu; Purwonugroho, Danar; Srihardyastutie, Arie; Prananto, Yuniar Ponco
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 9, No 2 (2024): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v9i2.86189

Abstract

Transition metal complexes, including copper(II) complexes, are being investigated as potential next-generation antibacterial agents. This study aims to prepare several Cu(II)-pyrazinamide (Cu(II)-pza) complexes using Cu(II) salts (acetate, chloride, nitrate, sulphate) through a direct mixing technique. Different Cu(II) salts are anticipated to yield distinct complexes, resulting in varied antibacterial properties. The Cu(II)-pza complexes were characterized using melting point analysis, infrared spectroscopy, and powder X-ray diffraction (XRD). Melting point analysis provides insights into the physical properties of the complexes. Infrared spectroscopy identifies functional groups and predicts chemical bonds within the complexes. Powder XRD analyzes the characteristic diffraction patterns of the complexes. Experimental data reveal that the infrared spectra of all Cu(II)-pza complexes exhibit typical absorption bands of the pyrazinamide ligand (N-H, C=O, C-N, and C=N). Powder XRD analysis shows different diffraction patterns for each complex, indicating the formation of different compounds due to variations in anion and metal-ligand interactions, with the sulphate complex matching a previously reported complex. Melting point tests indicate the decomposition of the complexes within the range of 215–225 °C, except for the acetate complex, which decomposes at 275 °C. The antibacterial activities of these complexes against S. aureus and E. coli were examined in vitro based on inhibition zone diameter and MIC value. The sulphate, nitrate, and chloride complexes exhibit MIC values of 1,000 ppm and MBC values of 6,000 ppm, demonstrating better antibacterial activity against S. aureus than E. coli. These findings suggest the potential of Cu(II)-pza complexes as antibacterial agents. Further studies, such as crystal structure determination, are necessary to explore the possible mechanisms of antibacterial activity.[1]      N. C. Handayani, A. Kusuma, R. Purwanto, R. E. Prasetya, and A. Budiman, “Pengembangan Agen Potensi Pengembangan Agen Antibakteri dari Senyawa Kompleks Logam Transisi di Indonesia,” The Indonesian Green Technology Journal, vol. 10, no. 1, pp. 9-20, 2021.[2]      R. S. Hellberg and E. Chu, “Effects of climate change on the persistence and dispersal of foodborne bacterial pathogens in the outdoor environment: A review,” Crit. Rev. Microbiol., vol. 42, no. 4, pp. 548–572, 2016. doi: 10.3109/1040841X.2014.967385.[3]      T. Li, Y. Wang, X. Zhang, J. Chen, and L. Sun, “Bacterial resistance to antibacterial agents: Mechanisms, control strategies, and implications for global health,” Sci. Total Environ., vol. 860, p. 160148, 2023. doi: 10.1016/j.scitotenv.2022.160148.[4]      N. A. Church and J. L. McKillip, “Antibiotic resistance crisis: challenges and imperatives,” Biologia (Bratisl)., vol. 76, no. 5, pp. 1535–1550, 2021. doi: 10.2478/s11756-021-00707-5.[5]      World Health Organization, "Global Action Plan for antimicrobial resistance,” vol. 105, no. 5, p. 70780, 2015. [Online]. Available: https://www.who.int/publications/i/item/9789241509763.[6]        World Health Organization, "Antibacterial agents in clinical development: an analysis of the antibacterial clinical development," 2019. [Online]. Available: https://www.who.int/publications/i/item/9789240000193.[7]      M. Rizzotto, “Metal Complexes as Antimicrobial Agents,” A Search Antibact. Agents, vol. 10, p. 45651, 2012.[8]      S. N. Sovari and F. Zobi, “Recent Studies on the Antimicrobial Activity of Transition Metal Complexes of Groups 6–12,” Chem., vol. 2, no. 2, pp. 418–452, 2020. doi: 10.3390/chemistry2020025.[9]      M. Claudel, C. Ragonnaud, S. Yousfi, A. Choisy, and R. Gaertner, “New Antimicrobial Strategies Based on Metal Complexes,” Chemistry, vol. 2, no. 4, pp. 849–899, 2020. doi: 10.3390/chemistry2040067.[10]    G. Borthagaray, L. Quintana, F. Brocal, and L. A. Rodríguez, “Infectious Diseases and Epidemiology Essential Transition Metal Ion Complexation as a Strategy to Improve the Antimicrobial Activity of Organic Drugs,” J. Infect. Dis. Epidemiol., vol. 2, no. 2, p. 14, 2016.[11] S. Mittapally, R. Taranum, and S. Parveen, “Metal ions as antibacterial agents,” Journal of Drug Delivery and Therapeutics, vol. 8, pp. 411–419, 2018. doi: 10.22270/jddt.v8i6.2018.[12]    J. Ara Shampa, “Physiochemical and Antibacterial Activity Investigation on Noble Schiff Base Cu(II) Complex,” Am. J. Heterocycl. Chem., vol. 3, no. 4, p. 37, 2017.[13] A. E. Ali, M. El-Ghamry, M. H. Saker, and A. K. Hussein, “Spectral, thermal studies and biological activity of pyrazinamide complexes,” Heliyon, vol. 5, no. 11, p. e02912, 2019. doi: 10.1016/j.heliyon.2019.e02912.[14] Q. C. Burandt, B. L. Knierim, S. Sundström, and F. Jacquet, “Further Limitations of Synthetic Fungicide Use and Expansion of Organic Agriculture in Europe Will Increase the Environmental and Health Risks of Chemical Crop Protection Caused by Copper-Containing Fungicides,” Environ. Toxicol. Chem., vol. 43, no. 1, pp. 19–30, 2024. doi: 10.1002/etc.4995.[15]    M. Vincent, L. Duval, R. Hartemann, J. Noury, and P. Perrin, “Antimicrobial applications of copper,” Int. J. Hyg. Environ. Health, vol. 219, no. 7, pp. 585–591, 2016. doi: 10.1016/j.ijheh.2016.07.003.[16]    M. S. Khan, R. Farooq, M. A. Baig, and H. Shahid, “Computational investigation of pyrazinamide drugs and its transition metal complexes using a DFT approach,” J. Comput. Chem., vol. 45, no. 10, pp. 622–632, 2024. doi: 10.1002/jcc.26563.[17]    E. A. Lamont and N. A. Dillon, “The Bewildering Antitubercular Action of Pyrazinamide,” Microbiology and Molecular Biology Reviews, vol. 84, no. 2, pp. 1–15, 2020. doi: 10.1128/MMBR.00034-19.[18]    N. Raman and R. Jeyamurugan, “Synthesis, characterization, and DNA interaction of mononuclear copper(II) and zinc(II) complexes having a hard-soft NS donor ligand,” J. Coord. Chem., vol. 62, no. 14, pp. 2375–2387, 2009. doi: 10.1080/00958970902932390.[19]    M. M. Khunur and Y. P. Prananto, “Structural analysis of polymeric copper(ii)-pyrazinamide complexes prepared from two different copper(II) salts,” IOP Conf. Ser. Mater. Sci. Eng., vol. 546, no. 6, 2019. doi: 10.1088/1757-899X/546/6/062015.[20]    M. Ahmed, S. H. Naz, M. H. Siddiqui, M. Tahir, and A. S. Farooqi, “Synthesis, characterization and anticancer activity of isonicotinylhydrazide metal complexes,” J. Chem. Soc. Pakistan, vol. 41, no. 1, pp. 113–121, 2019. [Online]. Available: https://jcsp.org.pk/issueDetail.aspx?aid=90.[21]    A. H. Rafika, M. H. Tarafder, K. Mahmood, and S. I. A. Razak, “Effect of drying temperature and drying time on the crystallinity degree of Zn(II)-tartrate complex,” Kuwait J. Sci., vol. 50, no. 4, pp. 596–601, 2023. doi: 10.48129/kjs.v50i4.11354.[22]    S. Tsuzuki, T. Hayashi, K. Muranaka, M. Kamata, T. Iwasaki, and K. Nishimura, “National trend of blood-stream infection attributable deaths caused by Staphylococcus aureus and Escherichia coli in Japan,” J. Infect. Chemother., vol. 26, no. 4, pp. 367–371, 2020. doi: 10.1016/j.jiac.2019.10.014.[23]    A. S. Coia, G. Müller, F. Körner, and H. W. Lang, “Exploring the Role of Transition Metal Complexes in Artistic Coloration through a Bottom-Up Scientific Approach,” J. Cult. Herit., 2024. doi: 10.1016/j.culher.2023.05.004.[24]    M. Manimohan, S. Karthikeyan, M. Ponnuswamy, and M. S. Suriyanarayanan, “Biologically active Co (II), Cu (II), Zn (II) centered water soluble novel isoniazid grafted O-carboxymethyl chitosan Schiff base ligand metal complexes: Synthesis, spectral characterisation, and DNA nuclease activity,” International Journal of Biological Macromolecules, vol. 163, pp. 801-816, 2020. doi: 10.1016/j.ijbiomac.2020.06.118.[25]    W. H. Turner, "Optical Absorption Spectra of Iron in The Rock-Forming Silicates: a Discussion," American Mineralogist: Journal of Earth and Planetary Materials, vol. 52, no. 3-4, pp. 553-555, 1967. doi: 10.2138/am-1967-3-428.[26] Y. Chen, Z. Lu, and X. Zhang, “Applications of Micro-Fourier Transform Infrared Spectroscopy (FTIR) in the Geological Sciences — A Review,” Appl. Spectrosc. Rev., vol. 50, no. 4, pp. 30223–30250, 2015. doi: 10.1080/05704928.2015.1115401.[27]    M. Ali, S. G. Tushar, A. K. Naji, and R. Ahmad, “Design, synthesis and antitubercular evaluation of novel series of pyrazinecarboxamide metal complexes,” Iran. J. Pharm. Res., vol. 17, no. 1, pp. 93–99, 2018. doi: 10.22037/ijpr.2018.2124.[28]    B. Kozlevčar, B. Zupančič, M. Hren, and B. Šket, "Complexes of copper (II) acetate with nicotinamide: preparation, characterization and fungicidal activity; crystal structures of [Cu2(O2CCH3)4(nia)] and [Cu2(O2CCH3)4(nia)2]," Polyhedron, vol. 18, no. 5, pp. 755-762, 1999. doi: 10.1016/S0277-5387(98)00354-7.[29] O. Kristiansson, “Bis(pyrazine-2-carboxamide)bis(trifluoromethanesulfonato)copper(II) monohydrate,” Acta Crystallogr. Sect. E Struct. Reports Online, vol. 58, no. 3, pp. m130–m132, 2002. doi: 10.1107/S1600536802006196.[30]    N. C. Handayani, I. K. Dewi, M. Surya, and S. Utami, “Synthesis, Characterization, and Antibacterial Activity of Anion-Depended Cu (II)-Niacinamide Complexes,” The Indonesian Green Technology Journal, vol. 11, no. 2, pp. 1–12, 2020.[31]    P. Ghanghas, S. K. Ghanghas, and A. S. Thakur, “Coordination metal complexes with Schiff bases: Useful pharmacophores with comprehensive biological applications,” Inorg. Chem. Commun., vol. 130, p. 108710, 2021. doi: 10.1016/j.inoche.2021.108710.[32]    N. C. S. Mykytczuk, P. L. Trevors, and E. B. Twiss, “Fluorescence polarization in studies of bacterial cytoplasmic membrane fluidity under environmental stress,” Prog. Biophys. Mol. Biol., vol. 95, no. 1–3, pp. 60–82, 2007. doi: 10.1016/j.pbiomolbio.2007.03.001.[33]    S. Njobdi, N. T. J. Jebin, and A. J. Ishaku, “Antibacterial Activity of Zingiber officinale on Escherichia coli and Staphylococcus aureus,” J. Adv. Biol. Biotechnol., vol. 19, no. 1, pp. 1–8, 2018. doi: 10.9734/jabb/2018/39840.[34]    G. Kumaravel, R. R. Mounika, S. Harini, and K. K. Nithya, “Bioorganic Chemistry Exploiting the biological efficacy of benzimidazole based Schiff base complexes with L-Histidine as a co-ligand: Combined molecular docking, DNA interaction, antimicrobial and cytotoxic studies,” Bioorg. Chem., vol. 77, pp. 269–279, 2018. doi: 10.1016/j.bioorg.2018.01.022.[35]    M. Shen, L. Li, T. Hu, and J. Fang, “Antibacterial applications of metal–organic frameworks and their composites,” Compr. Rev. Food Sci. Food Saf., vol. 19, no. 4, pp. 1397–1419, 2020. doi: 10.1111/1541-4337.12558.
Crystallization of [Zn(Pyrazinamide)₂(Cl)₂] Complex and In Vitro Antibacterial Activity of the Complex Against E. coli and S. aureus Naila Azmi Adiba; Danar Purwonugroho; Arie Srihardyastutie; Yuniar Ponco Prananto
Jurnal Kimia Sains dan Aplikasi Vol 27, No 9 (2024): Volume 27 Issue 9 Year 2024
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.27.9.436-443

Abstract

A complex of [Zn(pza)2(Cl)2], pza = pyrazinamide, was successfully crystallized from methanol or ethanol solvents with different morphology. The complex was synthesized using the solution method in ZnCl2: pza mol ratios of 1:2 and 1:4 in both ethanol and methanol solvents. FTIR and single crystal XRD analyses were done to confirm the complex. The complex was then used for in vitro antibacterial test against E. coli and S. aureus. Experimental data shows that the type of solvent and metal-to-ligand mol ratio yields the same compound, resulting in colorless crystals that melt at 234-236°C. Large block crystals were obtained from the methanolic solution, while a higher yield was obtained from the use of a higher mol ratio of 1:4. Infrared spectra analysis confirms the presence of characteristic carbonyl and amide groups of the pza ligand. Meanwhile, single crystal XRD screening indicates that unit cell parameters of the crystals from both solvents are identical to a known zinc(II)-pza complex. In vitro antibacterial tests against E. coli and S. aureus show that the complex had much better activity than the ZnCl2 and the free pza. In addition, the complex performs better antibacterial activity toward gram-positive S. aureus than the gram-negative E. coli.
Effect of solvent in the solvothermal synthesis of nickel(II)-terephthalate complex Finisia, Yenni; Tjahjanto, Rachmat Triandi; Prananto, Yuniar Ponco
Acta Chimica Asiana Vol. 7 No. 2 (2024)
Publisher : The Indonesian Chemical Society, Chapter Nusa Tenggara and The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v7i2.198

Abstract

This research aims to replace the use of dimethylformamide (DMF) with a greener solvent in the solvothermal synthesis of nickel(II)-terephthalate complex. Effect of solvent on the crystallinity degree, thermal stability, and band gap energy of the synthesized complex are also studied. The synthesis was carried out using solvothermal method at 150 0C for 10 hours with a Ni(II) : terephthalate acid mol ratio of 1:1 in several H2O:DMF solvent compositions (1:0; 1:1; and 0:1). The precipitated products underwent characterization using ATR-IR, P-XRD, SEM, TGA, Surface Area Analyzer, and UV-DRS. Findings revealed the successful formation of the Ni(II)-terephthalate complex using three different solvent compositions (H2O/DMF = 1:0, 1:1, and 0:1). This suggests that the complex can be synthesized using more environmentally friendly solvents, potentially reducing or substituting the use of DMF solvent. However, the solvent affects the characteristics of the synthesized complex, in which green block microcrystalline solid was obtained when using water as the solvent, meanwhile green aggregates with lower crystallinity degree was precipitated out when using DMF or H2O-DMF. The Ni(II)-terephthalate complexes obtained from the H2O and H2O-DMF solvents are different to that of from the DMF solvent, but they both has identical powder diffraction pattern with previously reported compound of [Ni3(OH)2(C8H4O4)2(H2O)4].2H2O. Furthermore, the use of water as the solvent increase the crystallinity degree and thermal stability of the complex but the band gap energy of the synthesized Ni(II)-terephthalate complex compared to that of obtained from the DMF solvents.
Capacity Building for Mobile Coffee Micro, Small, Medium, Enterprises in Banyuwangi Regency Sunarharum, Wenny Bekti; Nurcholis, Mochamad; Prananto, Yuniar Ponco; Satria, Dias
Journal of Innovation and Applied Technology Vol 10, No 2 (2024)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jiat.2024.10.02.010

Abstract

The mobile coffee trend has become an innovation in marketing coffee products, especially in urban areas. Mobile coffee offers a more flexible and personalized way to reach consumers, in line with the increasing demand for coffee in Indonesia. This service is based on the need to increase the capacity of mobile coffee business actors in Banyuwangi Regency, which has great potential in the agricultural sector, especially coffee. A participatory approach was carried out in the form of training, technical guidance and assistance to mobile coffee business actors. This service includes training in post-harvest processing techniques, business management, and digital marketing strategies as well as technical guidance on coffee fruit production. Data was collected through interviews, and carrying out pre-tests and post-tests to measure the increase in understanding and skills of business actors. The research results show a significant increase in the knowledge and skills of mobile coffee entrepreneurs, especially in the aspects of post-harvest processing, production and marketing. The impact of this service is the creation of mobile coffee business actors who are more competent and able to compete in a wider market, as well as improving the quality of life through increasing income
Oxidation of Styrene to Benzaldehyde Using Environmentally Friendly Calcium Sulfate Hemihydrate-Supported Titania Catalysts Koesnarpadi, Soerja; Wirawan, Teguh; Nurhadi, Mukhamad; Wirhanuddin, Wirhanuddin; Prananto, Yuniar Ponco; Nazarudin, Nazarudin; Degirmenci, Volkan; Lai, Sin Yuan; Nur, Hadi
Bulletin of Chemical Reaction Engineering & Catalysis 2024: BCREC Volume 19 Issue 4 Year 2024 (December 2024)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20224

Abstract

This paper presents the synthesis and characterization of calcium sulfate hemihydrate (CSH)-supported titania (TiO2) catalysts and their application in the environmentally friendly oxidation of styrene to benzaldehyde using hydrogen peroxide (H2O2) as the oxidant. The study explores the catalyst's structure-activity relationship, emphasizing the importance of mesoporous materials for enhanced catalytic performance. The CSH-Titania catalysts were synthesized using fish bone-derived CSH as a support, which aligns with green chemistry principles. Characterization techniques such as Fourier Transform Infra Red (FTIR), X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), and Brunauer-Emmett-Teller (BET) surface area analysis confirmed the successful impregnation of titania and its catalytic efficiency. The catalysts exhibited high selectivity for benzaldehyde, achieving up to 49.45% conversion of styrene, with benzaldehyde as being the main product. The research highlights that the catalyst’s performance decreased after calcination due to a reduced surface area and pore volume, yet it maintained recyclability across three cycles with minimal  lose  in selectivity loss. Overall, this study introduces a cost-effective and sustainable approach to styrene oxidation, demonstrating the potential for industrial application in producing high-value chemicals with minimal environmental impact. Copyright © 2024 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Precipitation of Zn(II)-Pyrazinamide Complex from Ethanol Solution as an Antibacterial Candidate based on Transitional Metal Complex Compounds Adiba, Naila Azmi; Purwonugroho, Danar; Prananto, Yuniar Ponco
Indonesian Green Technology Journal Vol. 13 No. 1 (2024)
Publisher : Sekolah Pascasarjana, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.igtj.2024.013.01.01

Abstract

The Zn(II)-pyrazinamide complex compound is currently being developed as an antibacterial agent. To obtain the Zn(II)-pyrazinamide complex effectively, many factors must be considered, including the type of zinc(II) salt and the mole ratio. The aim of this research is to examine the influence of the type of zinc(II) salt and the mole ratio in the precipitation of the Zn(II)-pyrazinamide complex to obtain efficient results. The Zn(II)-pyrazinamide complex was synthesized using a direct mixing technique in ethanol solution with metal:ligand mole ratios of 1:2 and 1:4 and with types of zinc(II) salts, namely acetate, chloride, and nitrate. Based on the research results, the anion of the zinc(II) salt leads to the precipitation of the complex while the metal:ligand mole ratio leads to the resulting yield. An efficient synthesis condition to obtain the Zn(II)-pyrazinamide complex is to use ZnCl2 salt and a mole ratio of 1:4. Experimental data also shows that the Zn(II)-pyrazinamide complex precipitate melts at a temperature of 234oC, while infrared spectroscopy analysis shows the characteristic carbonyl and amide groups of pyrazinamide. Meanwhile, powder-XRD analysis showed that the resulting complex had a different structure than that previously reported.
Room Temperature Synthesis of Aluminium(III)-Benzenedicarboxylate Complex from Two Different Al(III) Salts Syarifah, Nidatul; Yofandi, Muhammad Farrel; Fardiyah, Qonitah; Prananto, Yuniar Ponco
Jurnal Kartika Kimia Vol 8 No 1 (2025): Jurnal Kartika Kimia
Publisher : Department of Chemistry, Faculty of Sciences and Informatics, University of Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jkk.v8i1.936

Abstract

Al(III) complex with 1,4-benzenedicarboxylate ligand (Al-BDC) is a porous material that has the potential to be developed as an adsorbent or photocatalyst. This complex is often obtained by the solvothermal method at high temperature. This paper reports the synthesis of Al-BDC complex by solution method at room temperature from two different types of Al(III) salts, namely nitrate salt (complex 1) and chloride salt (complex 2). The synthesis of Al-BDC was conducted with Al(III):H2-BDC mol ratio of 2:3. The synthesized complexes were characterized by ATR-IR, powder XRD, UV Vis–DRS, and DTA–TGA. The results showed that white powders were obtained with a yield of 75.8% (complex 1) and 65.7% (complex 2). The presence of BDC ligands in both complexes was confirmed by the presence of typical absorption bands of C=O, C-O, and Al-O functional groups in their infrared spectra. Both complexes have different surface morphology and average crystallite sizes (28.63 nm – complex 1; 34.98 nm – complex 2), but the powder X-ray diffraction patterns, DTA-TGA thermograms, UV Vis-DRS spectra, and band gap energy values ​​of both complexes are considerably identical. Powder XRD diffraction analysis of both complexes shows a pattern that is identical to the known compound with a formula of {[Al(OH)(BDC)]·(H2BDC)0.69}n(CCDC No. 2179625) in which the compound forms 3D polymeric structure with terephthalic acid occupies the voids.
Co-Authors Adhinanda, Arrival Arsyad Adi Kurnia Soesantyo Adiba, Naila Azmi Afif Eka Rahma Setiyanto Agustina, Laily Aulia Ahmad Syarwani Andi Nafis An Naafi Andri Risdianto Andri Risdianto Ani Mulyasuryani Arie Srihardyastutie Ariesta, Muhammad Naufal Atsuhiko Isobe Choi, Jonghyun Danar Purwonugroho Danar Purwonugroho Danar Purwonugroho Danar Purwonugroho Danar Purwonugroho Danu Setia Wardana Darjito Darjito Darjito Defri Yona Degirmenci, Volkan Diana Ningrum, Diana Dias Satria Dini Tri Wahyuni Dini Tri Wahyuni Dyah Ajeng Pitaloka Efiria Riskah Efiria Riskah Elvian Eka Krisnaniningrum Evitantri, Mangesti Reza Fanny Prasetia Faustina De Yesu Prisila Abi Febriani, Rakhma Finisia, Yenni Firsta Luthfiani Salsabila Fuad, M.Arif Zainul Grafist, Therra Raditya Hadi Nur Hadi Nur Karti'a, Galuh Wahyu Kashifa Maria Jihan Lai, Sin Yuan Ledhyane Ika Harlyan M. Naufal Tsaqif Dzakwan Mangesti Reza Evitantri Mochamad Arif Zainul Fuas Mochamad Nurcholis Mohammad Misbah Khunur Mohammad Misbah Khunur Mohammad Misbah Khunur Mohammad Misbah Khunur Muhammad Misbah Khunur Mukhamad Nurhadi, Mukhamad Naila Azmi Adiba Nazarudin Nidatul Syarifah Qonitah Fardiyah Rachmat Tjahjanto Rachmat Triandi Tjahjanto Radiansyah, Muhamad Agus Rafi Dwiasis Wibisono Rahmadani, Agung Rizky Arief Shobirin Rizky Arief Shobirin Rosmawati, Angelina Sasti Gona Fadhilah Silvi Zakiyatul Ilmiyah Sin Yuan Lai Siti Mutrofin Siti Mutrofin Soerja Koesnarpadi Sri Wardhani Suyono, Suyono Syarifah, Nidatul Taufiq, Muhammad Arif Teguh Wirawan Teguh Wirawan, Teguh Tutik Setianingsih Tutik Setianingsih Wenny Bekti Sunarharum Wirhanuddin, Wirhanuddin Yeni Dwi Lestari Yenni Finisia Yofandi, Muhammad Farrel Yoga Rizky Nata Yoga Rizky Nata Yogi Rifki Wijayanto Zhiying Zhu