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INDONESIA
Indonesian Journal of Chemistry
Published by Universitas Gadjah Mada
ISSN : 14119420     EISSN : 24601578     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry
Indonesian Journal of Chemistry is an International, peer-reviewed, open access journal that publishes original research articles, review articles, as well as short communication in all areas of chemistry including applied chemistry. The journal is accredited by The Ministry of Research, Technology and Higher Education (RISTEKDIKTI) No : 21/E/KPT/2018 (in First Rank) and indexed in Scopus since 2012. Since 2018 (Volume 18), Indonesian Journal of Chemistry publish four issues (numbers) annually (February, May, August and November).
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Articles 25 Documents
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Search results for , issue "Vol 24, No 4 (2024)" : 25 Documents clear
Synthesis, Structure, Antibacterial Activity, and Hirshfeld Surface Analysis of Complex [Co(4-ampy)4(NCS)2]·CO2 Savitri, Linggar Agil; Putra, Faaza'izzahaq Setta; Laksmana, Sutandyo Dwija; Mariyam, Dewi; Dasna, I Wayan
Indonesian Journal of Chemistry Vol 24, No 4 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.90585

Abstract

The [Co(4-ampy)4(NCS)]2·CO2 complex compound was successfully synthesized using the reflux method from the reaction between CoCl2·6H2O, 4-aminopyridine, and KSCN in methanol solvent for 6 h at 64 °C. The synthesized compound is a dark purple cube-shaped crystal with a melting point of 209 °C. FTIR test showed the presence of isothiocyanate anion at C=N stretching vibration wavenumber 1633 cm−1, C–N vibration on amine group belonging to 4-aminopyridine ligand at 1217 cm−1, and C=N vibration of pyridine aromatic group at 1334 cm−1. Single crystal X-ray diffraction data refinement results show the complex compound has octahedral geometry in a cubic lattice with space group Pn̄3n with lattice parameters a = b = c = 16.426(3) Å and α = β = γ = 90°. According to the crystal data, there was one molecule of CO2 in the crystal packing of the complex. Hirshfeld surface analysis showed the major interaction contributions from C⋯H/H⋯C, H⋯H, S⋯H/H⋯S, and O⋯H/H⋯O. The antibacterial activity test results showed that the activity of the synthesized complex was more active against Staphylococcus aureus but less effective against Escherichia coli.
Enhanced Capacity and Easily Separable Adsorbent of Dithizone-immobilized Magnetite Zeolite for Pb(II) Adsorption Susiana, Carissa Ayu; Rusdiarso, Bambang; Mudasir, Mudasir
Indonesian Journal of Chemistry Vol 24, No 4 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.90914

Abstract

In this study, magnetic natural zeolite (ZTM) was prepared using the coprecipitation method and dithizone was then immobilized on its surface in less toxic medium of alkaline to yield dithizone-immobilized magnetic zeolite (ZTM-Dtz). The synthesized ZTM-Dtz was characterized by FTIR and XRD, indicating that dithizone was successfully immobilized on the surface of ZTM. Vibrating sample magnetometer measurements showed superparamagnetic properties of either ZTM or ZTM-Dtz with magnetization values of 7.35 and 11.49 emu g−1, respectively. The adsorption kinetics of Pb(II) on both adsorbents followed a pseudo-second-order and their adsorption isotherms were properly described by the Langmuir model. The adsorption capacity of ZTM and ZTM-Dtz were 6.94 and 38.46 mg g−1, respectively, suggesting that dithizone immobilization enhanced the adsorbent capacity more than 5 times. The interaction mechanism between Pb(II) metal ion and ZTM was dominated by ion exchange, whereas that of ZTM-Dtz was mostly hydrogen bonds and complexation. The synthesized material is promising to be developed for the adsorption of heavy metal ions such as Pb(II) because it provides a high adsorption capacity and the adsorbents can be easily separated magnetically after application.
Assessment of Heavy Metal Concentrations in Roadside Soils from Mafraq, Jordan Al-Sarhan, Ahmed; Al-Massaedh, "Ayat Allah"; Al-Momani, Idrees Faleh
Indonesian Journal of Chemistry Vol 24, No 4 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.90991

Abstract

In the present study, the concentrations of nine heavy metals (Cr, Cd, Cu, Mn, Pb, Co, Fe, Ni, and Zn) in roadside soils were measured by flame atomic absorption spectroscopy (FAAS). Roadside soils were collected during the summer semester from Mafraq, Jordan (N = 97). Four sampling sites were selected for this study, including commercial area, industrial area, residential area, and Irbid-Mafraq highway. The average metal concentrations (±SD) in the collected soils were 16840 (± 9479), 40 (± 40), 99 (± 44), 478 (± 155), 60 (± 62), 2 (± 1), 73 (± 23), 14 (± 5), and 45 (± 13) mg/kg for Fe, Cu, Zn, Mn, Pb, Cd, Cr, Co, and Ni, respectively. The results of this study revealed that the highest Mn, Cu, Co, Ni, Zn, Fe, and Pb concentrations were found in the industrial area, and the highest Cd concentration was found at the Irbid-Mafraq highway. The values of the enrichment factors for Zn, Cr, Cd, and Ni in the collected roadside soils were found to be higher than 10, confirming the presence of anthropogenic pollution in the studied areas. The results of this study were also compared with other studies performed in different countries in the world.
Synthesis, Characterizatiᴏn, and Bioactivity Assessment of Rh(III) and VO(IV) Complexes with Isatin Derivative N1,N2-bis(2-oxoindolin-3-ylidene)ethanebis(thioamide) Ahmed, Yusra Jalil; Hasan, Shurooq Abdulfattah; Hamud, Waeel Mohammed; Mahmoud, Nawal Hamdan
Indonesian Journal of Chemistry Vol 24, No 4 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.91731

Abstract

The new two-component complexes of Rh(III) as well as VO(IV), with the base of Schiff ligand associated with the isatin derivative N1,N2-bis(2-oxoindolin-3-ylidene)ethanebis(thioamide) (L) were prepared by one-step method reaction between isatin compound and dithiooxamide by condensation in presence of glacial acetic acid and investigated through applying the FTIR, UV-vis devices, evaluation of carbon, hydrogen, nitrogen and halogens elements using elemental analysis, flame atomic absorption, magnetic susceptibility, molar conductivity, GC-MS, LC-MS, XRD, 1H and 13C-NMR. Depending on the results obtained from the measurement techniques, the structure of Rh(III) complex was octahedral geometry, while VO(IV) complex was square pyramidal geometry. The antibacterial property for the prepared Schiff-based ligand L and metallic complexes 1 and 2 in this research was examined towards two different kinds about pathological microbes growth of Escherichia coli and Staphylococcus aureus, respectively, in comparison with conventional antibiotic cephalexin.
Improvement of Bixin Carotenoid Stability through the Formation of M–bixin (M = Mg2+, Ca2+, Zn2+, and Se4+) Complex Compounds Based on Photodegradation Kinetic Studies Rahmalia, Winda; Shofiyani, Anis; Kusuma Dewi, Yohana Sutiknyawati; Indriani, Fani; Putri, Alintianni Yolla; Septiani, Septiani
Indonesian Journal of Chemistry Vol 24, No 4 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.92098

Abstract

Bixin is used in wide-ranging food applications but is susceptible to degradation by many factors, including light. This research aims to increase bixin photostability through metal complexation. Bixin was complexed with Mg2+, Ca2+, Zn2+, and Se4+. The synthesis process was carried out in deep eutectic solvent media. Metal-bixin complexes have been successfully synthesized, indicated by the change in retention factor and %III/II ratio values resulting from thin-layer chromatography and UV-vis spectrophotometer analysis, respectively. The Fourier transform infrared analysis showed the interaction between central metal ion with bixin ligand has occurred by hydroxyl and carbonyl groups of bixin, which was characterized by a decrease in the intensity of the absorption peak in wavenumber 3000–4000 cm−1 (for the –OH carboxylic group vibration) and the peak shift of metal-bixin complexes towards the larger compared to bixin in the range wavenumber 1600–1700 cm−1 (for C=O ester vibrations). First-order photodegradation kinetics studies showed that the metal-bixin complexes were more stable than pure bixin. Se-bixin was four times more stable than pure bixin. Complexation of bixin with metals was shown to be a potential method to increase the stability of bixin, especially against light exposure.
Preparation of Au-Doped Two-Phase TiO2 Nanoparticles by One-Step Method as Photocatalytic Applications Neama, Rasha Jameel; Alosfur, Firas Kamel Mohamad; Tahir, Khawla Jemeal; Ridha, Noor Jawad; Ahmed, Luma Majeed
Indonesian Journal of Chemistry Vol 24, No 4 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.92687

Abstract

The synthesis of pure TiO2 and X% Au/TiO2 NPs was achieved via a sol-gel technique. The influence of Au concentration on structural, morphological, and optical features, as well as photocatalytic activity, was studied. XRD analysis revealed the presence of crystallized titanium consisting of anatase and rutile phases. The surface composition and electronic structure of TiO2 and X% Au/TiO2 catalysts were investigated using XPS analysis. Au/TiO2 consists of Ti 2p, O 1s, and Au 4f regions from XPS analysis. FESEM and TEM were utilized to analyze the morphology of the samples. FTIR spectrum indicated the presence of OH, CH2, and Ti–O–Ti groups in TiO2 samples, with an additional peak at 2108.89 cm−1 indicating the presence of gold in X% Au/TiO2 samples. The specific surface area increased from 33.36 m2/g for pure TiO2 to 51.62 m2/g after the doping of 2.5% Au NPs. The incorporation of Au on the TiO2 surface significantly influenced the optical properties in the 490 to 590 nm region, observed through the UV-vis absorption spectrum. The 2% Au/TiO2 NPs exhibited higher catalytic activity than pure TiO2, degrading methylene blue dye by 72.43% within 120 min.
A Review on Silver Nanoparticles Based Biomaterials for Bone Tissue Engineering and Medical Applications Sari, Nasmi Herlina; Rivlan, Muhammad Zaidan Fadhlurrohman; Suteja, Suteja; Kadriyan, Hamsu; Thiagamani, Sentil Muthu Kumar
Indonesian Journal of Chemistry Vol 24, No 4 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.92830

Abstract

Silver nanoparticles (AgNPs) are being studied extensively as nanostructures for novel and enhanced biomedical applications. Nanoparticles in bone grafts have been shown to speed up fracture healing by providing a finer structure for bone tissue engineering. They are known to have excellent antimicrobial properties due to their high surface-to-volume ratio and small particle size, without affecting the material's mechanical properties. AgNPs' distinct property makes them the preferred filler in a wide range of biomaterials, where they play an important role in enhancing properties. AgNP-containing biomaterials can be easily tailored to meet specific requirements in the development of bone tissue. Adjusting size, shape, composition, and surface charge can enhance their effectiveness in interacting with bone cells, promoting cell attachment, and delivering growth factors. Using AgNP-based biomaterials can help prevent or reduce the formation of biofilms. The utilization of these materials in bone tissue engineering has demonstrated potential in treating musculoskeletal conditions and bone traumas. They are versatile for various applications such as bone implants, scaffolds, wound dressings, and antibiotic delivery systems. This review will cover several special topics, including silver-based biomaterials, toxic properties, morphology and mechanical properties of silver-based biomaterials, and applications of silver-based biomaterials in medical applications.
Clitoria ternatea Increases Milk Production in Dairy Cows by Inhibiting Dopamine Receptor D2: A Computational Study Leondro, Henny; Hadiani, Dimas Pratidina Puriastuti; Krisnaningsih, Aju Tjatur Nugroho; Lestari, Oke Anandika; Wahyudi, Didik; Gusmalawati, Dwi; Tribudi, Yuli Arif; Prihandini, Peni Wahyu
Indonesian Journal of Chemistry Vol 24, No 4 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.92920

Abstract

Dairy cow's milk is a primary commodity in various countries and increasing milk production in dairy cows is crucial. Clitoria ternatea has the potential to enhance milk production in dairy cows. This research aims to analyze C. ternatea's ability to induce milk production in dairy cows by targeting the DRD2 protein. The compounds within C. ternatea were screened for drug-likeness, toxicity, physicochemical properties, and membrane permeability parameters. The DRD2 protein in dairy cattle was modeled using homology modeling. The interaction stability between C. ternatea compounds and DRD2 was analyzed through molecular docking and dynamic using AutoDock Vina and Webgro. The study results revealed that among the 18 compounds, 5 passed the drug-likeness screening: citronellal, alpha-terpinolene, 15-methyxypaysine, allyl-crotyl-zinc, and 9,12-octadecadiynoic. These 5 compounds exhibited low toxicity and demonstrated easy penetration of lipid membranes. Molecular docking results indicated that citronellal and alpha-terpinolene had the lowest binding energy values and were bound to the inhibitor's side. Molecular dynamic simulations also confirmed the stability of the interaction between citronellal and alpha-terpinolene with DRD2. In conclusion, this research suggests that C. ternatea can potentially increase milk production in dairy cows by inhibiting the DRD2 protein, primarily through citronellal and alpha-terpinolene.
The Improvement of Modified Rice Straw Fiber/Polyvinyl Alcohol Thermoplastic Polymer Composite Using Cold Plasma Technology Harianingsih, Harianingsih; Indriawan, Ari Nur Dwi; Setiadi, Rizki; Pangestu, Indra Sakti; Ubay, Isnina Noor; Erliana, Savira Rinda
Indonesian Journal of Chemistry Vol 24, No 4 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.93255

Abstract

The use of natural rice straw as a filler for composite materials has not been optimally utilized; only around 7–16% of the grain is used in the industry. Various developments have been carried out, including its use as a filler or reinforcement for wood polymer composite products, but it is not effective because of poor interfacial adhesion. An alternative to increase the effectiveness of straw fibers in wood composites is by using cold plasma (atmospheric) treatment. In this research, composites consisting of straw fiber and biodegradable polyvinyl alcohol (PVA) matrix were made with and without cold plasma injection treatment. PVA is used because of its hydrophilic nature and function as a matrix. This research aims to determine the effect of cold plasma injection on straw fiber/PVA composites. The method used consists of preparation of straw fiber and composites, flexural testing with time variations of 10, 20, and 30 sec, morphological analysis using SEM to determine surface roughness, and FTIR test. The results showed that treatment with and without plasma provided significant differences in roughness. Plasma causes roughness to increase, thereby increasing the adhesion of the interface to the matrix.
Electrocoagulation in Wastewater from Spent-Batteries Recycling Mufakhir, Fika Rofiek; Khotimah, Chusnul; Oediyani, Soesaptri; Astuti, Widi; Sumardi, Slamet; Prasetia, Hendra; Arham, La Ode; Hakim, Hafid Zul; Petrus, Himawan Tri Bayu Murti; Poernomo, Venny
Indonesian Journal of Chemistry Vol 24, No 4 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.93262

Abstract

This study uses electrocoagulation to investigate reducing heavy metal content in wastewater from discharging spent batteries. ICP-OES analysis shows that heavy metals exceed the environmental water standard. The electrocoagulation procedure was conducted within a reactor with a 500 mL volume and a rectifier with a 5 A current capacity. Three types of electrode material combinations were used: iron (Fe) and aluminium (Al) as well as Fe-Fe, Al-Al, and Fe-Al pairs with 1 cm in the distance by parallel monopolar cells. Alternating current was used with 30, 40, and 50 A/m2 current density. The best result shown in the Fe-Al electrode pair combination system at 40 A/m2 for 30 min contact time and removal efficiencies for Co, Cd, Ni, Zn, and As is 98.76, 90.73, 99.32, 97.93, and 97.78%, respectively, while for Hg it is 31.84%, even though only Cd is above the standard limit. The heavy metal bearing was confirmed using SEM-EDS in the floc and the precipitate residue. The dissolved electrode materials and electrical energy consumed are 0.32 g and 0.109 kWh/m3, respectively. This method can be a good alternative for treating wastewater compared to direct current electrocoagulation, where the electrode and energy will be less consumed.

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