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All Journal VALENSI International Journal of Renewable Energy Development JURNAL KIMIA SAINS DAN APLIKASI Jurnal Sains Materi Indonesia Bulletin of Chemical Reaction Engineering & Catalysis Journal of Engineering and Technological Sciences EduChemia: Jurnal Kimia dan Pendidikan Chimica et Natura Acta Indonesian Journal of Chemistry Chemistry Indonesian Journal of Chemical Research Jurnal Kartika Kimia EKOLOGIA : Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup Jurnal Teknologi dan Manajemen Makara Journal of Science Molekul: Jurnal Ilmiah Kimia Environmental and Materials International Journal of Renewable Energy Development Bulletin of Chemical Reaction Engineering & Catalysis
Jarnuzi Gunlazuardi
Department Of Chemistry, Faculty Of Mathematics And Natural Sciences, University Of Indonesia, Depok 16424, West Java
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Physics

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Fotodegradasi Metilen Biru oleh Metal Organic Framework (MOF) Fe-PTC dengan Penambahan H2O2 dan Dioptimasi Menggunakan Desain Box Behnken Fathurrahman, Muhammad; Zulys, Agustino; Gunlazuardi, Jarnuzi
Jurnal Kartika Kimia Vol 6 No 2 (2023): 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.v6i2.228

Abstract

Metal-organic framework (MOF) is a group of materials that can act as a photocatalyst to degrade dyes under visible light. This research aims to synthesize a new MOF material using iron metal (Fe) and the organic linker perylene-3,4,9,10-tetracarboxylate (PTC) via the solvothermal method, then characterize it using FTIR, XRD, DRS, and SEM-EDS, as well as its application in photodegradation of methylene blue dye by MOF Fe-PTC with the addition of H2O2 using a Box Behnken design. FTIR spectrum with absorption at a wave number of 572 cm-1 which identifies the presence of bonds between Fe and O. Solubility tests show that the material was difficult to dissolve in polar, semipolar, and nonpolar solvents. EDS Mapping which shows the presence of the Fe element with a weight percentage of 21.6%. The synthesized MOF Fe-PTC has a degree of crystallinity of 46.56% and an average crystal size of 50.9 nm with the highest diffraction peak at 2θ = 33.16°. DRS analysis shows that the MOF Fe-PTC has a bandgap energy of 1.93 eV with a maximum wavelength (lmax) of 638 nm. Characterization using SEM shows that the MOF Fe-PTC has a shape like a cylindrical tube. The optimum conditions obtained from photodegradation of methylene blue by MOF Fe-PTC with the addition of H2O2 under visible light irradiation of 250 W statistically are 1.35 mg for photocatalyst weight, 0.22 M for H2O2concentration, and 135 minutes for contact time.
Application of TiO2 Nanotube As Photoelectrode For Corrosion Prevention Of Stainless Steel In pH Variation of NaCl Misriyani, Misriyani; Wahab, Abdul Wahid; Taba, Paulina; Gunlazuardi, Jarnuzi
Indonesian Journal of Chemical Research Vol 3 No 1 (2015): Edisi Bulan Juli (Edition For July)
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2015.3-mis

Abstract

The research amis to synthesize TiO2 nanotube photoelectrode (TiO2-NT) by anodizing method. The photoelectrodes applied in photoelectrochemical system to prevent the corrosion of steel. Anodizing method carried out by preparing an electrochemical system consisting of a titanium plate as anode and Pt wire as cathode in electrolyte containing glycerol, ammonium fluoride and water. Voltage applied from the DC current source and followed by thermal treatment at a temperature of 500oC. The photoelectrode further characterized by using X-Ray Diffraction and Surface Area Analyzer. The result of anti-corrosion test of stainless steel 304 by TiO2-NT showed that photopotential value of steel shifted to the more negative value in UV light. The significant potential shift occurs at pH 8 and the corrosion rate of stainless steel 304 couple with TiO2-NT decrease reaches 1.7 times. It concluded that the photoelectrodes can be used to reduce the corrosion rate of stainless steel 304 by utilizing sollar energy as a source of UV light.
Preliminary Studi of Dye-Sensitized Solar Cell Photoelectrochemical for CO2 Conversion to Methanol Using CuO-modified Dark TiO2 Nanotubes Array as Cathode Arda, Hany Dwi; Syauqi, Muhammad Iqbal; Gunlazuardi, Jarnuzi
Molekul Vol 19 No 3 (2024)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2024.19.3.11162

Abstract

The increased atmospheric carbon dioxide (CO2) levels can lead to climate change and adversely affect human health. Therefore, it is necessary to develop a method to capture CO2 and convert it into a more valuable substance, such as methanol. In this study, we established a tandem system involving dye-sensitized solar cells and photoelectrochemical (DSSC-PEC), which included the PEC zone using CuO/dark TiO2 nanotube array (CuO/dTNA) as the dark cathode where CO2 reduction takes place, and Co-Pi/blue TiO2 nanotube array (Co-Pi/bTNA) as the counter photoanode. For the DSSC zone, N719/TNA was used as the photoanode, I-/I3- electrolyte, and Pt/FTO as the cathode. The tandem system was constructed by connecting the PEC cathode to the DSSC photoanode and the PEC photoanode to the DSSC cathode using silver wire. Under solely visible light induction and water containing sodium bicarbonate electrolyte saturated with CO2, the proposed devise produced methanol at 1.292 μmol/hour. Keyword: Carbon dioxide, copper oxide, dark TiO2 nanotube, DSSC-PEC
Development of Photo Electrocatalytic Chemical Oxygen Demand Design (PECOD) Sensor using Highly Ordered Titanium Dioxide Nanotube Arrays Electrodes Utami, Chichi Amne; Syauqi, Muhammad Iqbal; Ningsih, Sherly Kasuma Warda; Wibowo, Rahmat; Gunlazuardi, Jarnuzi
Chimica et Natura Acta Vol 12, No 3 (2024)
Publisher : Departemen Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cna.v12.n3.49333

Abstract

Population growth, industrialization, and the need to ensure water quality have fostered the demand for analytical methods and tools to determine one of the important values of water quality standards. The oxygen demand of a given water matrix provides valuable information about the presence of organic compounds in a sample. The TiO2-based photoelectrocatalytic COD (PECOD) method offers a faster, more efficient, and more accurate alternative than conventional methods. Highly ordered TiO2 nanotube arrays (HOTNAs) were synthesized by anodizing titanium metal at 45V for 2 hours. HOTNAs/FTO photoanodes are used to oxidize organic compounds in water. HOTNAs/FTO photoanode has a bandgap of 3.4eV and a current density of 0.29 mA/cm2. Environmental samples were tested with the PeCOD sensor using glucose and mixed compound addition standards method. Water samples taken from local small ponds, namely Danau Kenanga, Danau Agathis, and typical wastewater of Laundry activity reveal COD values of 15,4659 to 15,9571 mg/L O2; 19,0500 to 19,6179 mg/LO2; 445,2336 to 449,7830 mg/L O2; respectively. The developed PECOD sensor performed well and provided analytical results that were not much different from conventional methods, with an error percentage below 10%.
Preparation and Characterization of Pt/TiO2 Nanotube Arrays (TNAs) Cathode by Photoreduction Method for Hydrogen Evolution Ningsih, Sherly Kasuma Warda; Wibowo, Rahmat; Gunlazuardi, Jarnuzi
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 11, No. 2, November 2025
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v11i2.46475

Abstract

TiO2 nanotube arrays were fabricated using a two-step anodization method. TNAs have been modified by the photoreduction technique with Pt as the cathode in the photoelectrocatalytic zone for the reduction reaction of H+ to produce hydrogen. TNAs with Pt were modified using H2PtCl6 as the precursor by immersion of this solution on the TNA substrate. Pt/TNAs were characterized using SEM-EDX, UV-Vis DRS, XRD, Raman Spectroscopy, Photoluminescence (PL), and photoelectrochemical analysis. The results show that the morphology of TNAs in the tube forms 2.1mm in height, and Pt nanoparticles are formed on the mouth wall of the tube with a size of approximately 10nm. EDX analysis shows that the composition of Pt/TNAs is approximately 0.15%, Ti 37.09%, and O 62.76%, indicating that Pt has been decorated on the TNAs photoanode. The band gap of Pt/TNAs was 2.82 eV. The diffractogram shows three groups of diffraction peaks, indicating the presence of anatase TiO2, Ti as a substrate, and Pt, which has been modified in the TNAs. The Raman peaks of TNAs are confirmed to appear at Raman shifts of 144.75, 196.51, 395.94, 517.14, and 638.85 cm-1. PEC cathodes for hydrogen production using Pt-decorated TNAs have been successfully prepared using photoreduction.
Co-Authors Abdul Wahid Wahab Adawiah Adawiah adawiah adawiah, adawiah Adel Fisli Agustino Zulys Andri Hermansyah Arda, Hany Dwi Ariani, Jenny Damayanti, Elok Defania, Mella Einaga, Yasuaki Eko Martin Sinaga Endang Saepudin, Endang Fatah, Fadhlir Rahman Aufar Al Harry Budiman Hedi Surahman Hedi Surahman Ida Nur Apriani Apriani Irkham Irkham Isnaini Rahmawati Ivandini Tribidasari Anggraningrum Jin Seog Kim Khoiriah Khoiriah Linda Jati Kusumawardani Madiabu, Mohammad Jihad Maemonah, Maemonah Misriyani Misriyani Misriyani Misriyani Muhammad Derry Luthfi Yudhi Muhammad Faisal Muhammad Fathurrahman Muhammad Ibadurrohman Muhammad Iqbal Syauqi Muhammad Iqbal Syauqi Munawar Khalil Neil V. Rees Oman Zuas Oman Zuas Paulina Taba Prastika Krisma Jiwanti Priantini, Tania Prita Amelia Prita Amelia Rahmat Wibowo Rahmat Wibowo Rahmat Wibowo RAHMAT WIBOWO Rahmawati, Isnaini Ratnawati Ratnawati Ridwan, Ridwan Robert, Didier Safni Safni Sanjaya, Afiten Rahmin Saragi, Indah Revita Sherly Kasuma Warda Ningsih Slamet Slamet Solly Aryza Suharyadi Suharyadi Supriyono Supriyono Supriyono Supriyono Syauqi, Muhammad Iqbal Utami, Chichi Amne Viona Wongso Wellia, Diana Vanda Wijaya, Lany Yasuaki Einaga Yunarti, Rika Tri Yuni K Krisnandi Yuni Krisyuningsih Krisnandi, Yuni Krisyuningsih Yunita Yunita Yunita Yunita