Garuda - Garba Rujukan Digital

p-Index From 2019 - 2024

2.109

P-Index

This Author published in this journals

All Journal 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) Indonesian Journal of Chemistry Chemistry Indonesian Journal of Chemical Research EKOLOGIA : Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup Jurnal Teknologi dan Manajemen Makara Journal of Science 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

Author-ID : 271081

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

Published : 25 Documents Claim Missing Document

Claim Missing Document

Articles

1 2 3

FABRIKASI SEL SURYA TERSENSITASI ZAT WARNA ALIZARIN RED S BERBASIS TIO2 - NANOTUBE BERBENTUK SERBUK YANG DIPEROLEH DARI TEKNIK RAPID BREAKDOWN ANODIZATION (RBA) Kusumawardani, Linda J; Gunlazuardi, Jarnuzi
-
Publisher : Fakultas Matematika dan ilmu pengetahuan Alam. Universitas Pakuan.

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (331.926 KB)

TiO2 semiconductor is a material that can be expected to play an important role to solve the energy crisis problem through the utilization of solar energy based on photovoltaic devices. Dye sensitized Solar Cells (DSSC) is a cheaper alternative to silicon-based photovoltaic cells. In this study, TiO2 nanotube powder is using for the DSSC fabrication process which is produced by Rapid Breakdown Anodization (RBA) technique. Alizarin red S is also used as a sensitizer and the counter electrode is prepared from a deposition of 5 mM H2PtCl6 solution as a Pt particle on a fluorine-doped tin oxide (FTO) glass substrate. TiO2 / FTO in DSSC system characterized by FESEM, obtained TiO2 film thickness about 1,6-1,7 μm and UV-Vis Spectrophotometer. Testing the efficiency value is measured by linear method Sweep Voltametry using potentiostat. The efficiency of converting light energy to electric current obtained is 2.63% and open circuit voltage is 361 mV. Key words : DSSC, Rapid Breakdown Anodization (RBA), Anodization, TiO2 , TiO2 Nanotube-Powder

STUDI PREPARASI TIO2 NANOTUBE SERBUK DENGAN TEKNIK RAPID BREAKDOWN ANODIZATION Kusumawardanil, Linda J; Tribidasari, Ivandini; Gunlazuardi, Jarnuzi
-
Publisher : Fakultas Matematika dan ilmu pengetahuan Alam. Universitas Pakuan.

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (368.039 KB)

Technique of Rapid Breakdown Anodization (RBA) is the new anodisasi technique introduced in 2009 as super fast synthesis methods for producing TiO2 powder. The development of this technique continues to be done in order to obtain the best quality of TiO2 powders according to the needs of the application. At this time the experiment reported the existence of the influence the granting of potential anodisasi currently underway against TiO2 powder produced good particle size, surface area and shape of the morfologinya. In addition, observations on the reaction time is also conducted to take into account the efficiency. From the results of the experiment, potential variations below 20 V, i.e., 10, 13, 14 and 15 V, it can be reported that the plate It can be transformed into the perfect TiO2 powder on electrochemical reaction of potential system 15 V for approximately 3 hours in perchloric acid media 0.15 M. Whereas the process of potential reactions on 10, 13 and 14 V does not produce TiO2 powder significantly in the time of observation for 7 hours. So further study focused on the synthesis of TiO2 powder results in a potential 15 V which will be compared with the potential 20 V, which is a potential that is used when this technique was first introduced. From the results of the experiment, reported on the potential RBA engineering 15 V produces TiO2 powder with a size outer diameter are smaller, i.e. an average of 84 nm with a more uniform particle size and surface area of the Crystal results kalsinasi at 500oC generated on 15 potential V is wider with a more uniform morphology, i.e. 69.723 g/m2 compared to 20 V , i.e. 63.824 g/m2. This will provide a significant influence in the activity of the fotokatalitik used for the fotodegradasi, as well as its application as DSSC (Dye Sensitized Solar Cells). KeyWord :Rapid Breakdown Anodization (RBA), Anodisasi, TiO2, TiO2 Nanotube-Serbuk

MODIFICATION OF MIXED STRUCTURE TiO2 NANOPOROUS-NANOTUBE ARRAYS WITH CdS NANO PARTICLE AND THEIR PHOTO ELECTRO CHEMICALPROPERTIES Hedi Surahman; Supriyono Supriyono; Yuni K Krisnandi; Jarnuzi Gunlazuardi
Jurnal Sains Materi Indonesia Vol 16, No 3: APRIL 2015
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

MODIFICATION OF MIXED STRUCTURE TiO2 NANOPOROUS-NANOTUBE ARRAYS WITH CdS NANO PARTICLE AND THEIR PHOTO ELECTRO CHEMICALPROPERTIES. In thiswork, a mixed structure TiO2 with a top nanoporous layer and an underneath highly ordered nanotube arrays layer (TNPs-NTAs) were prepared by anodic oxidation of Ti foil under controlled anodization time in an electrolyte containing fluoride ion,water and ethylene glycol. CdS nanoparticles (NPs) was deposited onto the mixed structure of TiO2 by Successive Ionic Layer Adsorption and Reaction (SILAR) with an aim toward tuning the photoelectrochemical performance to visible region. Themorphology, elemental composition, crystal structure, optical properties and photoelectrochemical performance of TNPs-NTs and CdS modified (CdS/TNP-NTAs) samples were characterized by Field Emisi Scanning Electron Microscope (FESEM), Electron Dispersive Spectroscopy (EDS), X-Ray Diffractometer (XRD), Diffuse Reflactance Spectroscopy (DRS) and electrochemical working station respectively. The results indicate that CdS nanoparticles uniformly decorated on top of surface and inner wall of TNPs-NTs sample. No clogging of CdS-NP at the mouth TNPs-NTAs was observed. The CdS/TNP-NTs show an increasing in the visible light adsorption and photocurrent response. Under white light illumination (9.93 mW/cm2), we found that the CdS/TNPs-NTAs have an optimum photocurrent density of 1.16 mA/cm2 , corresponding to energy photoconversion efficiency of 9.75%, which is 7 times higher than that of the bare TiO2 (TNPs-NTAs). The increase of photocurrent is attributed to the enhancement of charge separation efficiency and improved electron transport.

PHOTOCURRENT ENHANCEMENT OF CdS QUANTUM DOT SENSITIZED TiO2 ELECTRODE IN THE PRESENCE OF GOLD NANO PARTICLES Supriyono Supriyono; Hedi Surahman; Yuni Krisyuningsih Krisnandi; Jarnuzi Gunlazuardi
Jurnal Sains Materi Indonesia Vol 16, No 3: APRIL 2015
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

PHOTOCURRENT ENHANCEMENT OF CdS QUANTUM DOT SENSITIZED TiO2 ELECTRODE IN THE PRESENCE OF GOLD NANO PARTICLES. Photo current enhancement of CdS Quantum Dot (CdS-QD) sensitized TiO2 electrode in the presence of gold nano particles had been investigated. CdS quantum dots were prepared by successive ionic layer adsorption and reaction (SILAR) method, in which solution containing Cd(CH3COO)2 and Na2S were used as a precursor. Where as, gold nano particles was synthesized using solution containing HAuCl4 as a precursor, NaBH4 as a reducing agent and polyvinyl pyrrolydone (PVP) as a stabilizer. The film of CdS quantum dots and Au nano particles were characterized by UV-Vis spectrophotometer, Scanning Electron Microscope (SEM), X-Ray Diffraction (XRD), and electro chemical working station. Photo electrochemical study revealed that CdS-sensitized TiO2 electrode with gold nanoparticles have been able to increase photocurrent of 54 A/cm2 to 68 A/cm2, so the photocurrent enhancement of approximately 25% was observed. This observation indicates that the gold nanoparticles is potentially applicable to enhance photocurrent in a CdS-QD sensitized TiO2 electrode, which may lead to the development of more efficient solar cell.

Preparation of TiO2 Nanotube Using Anodization Method: Charactherization and Its Application for CO Sensor Harry Budiman; Rahmat Wibowo; Oman Zuas; Jarnuzi Gunlazuardi
EduChemia (Jurnal Kimia dan Pendidikan) Vol 6, No 2 (2021)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Preparation of highly ordered TiO2 nanotube arrays (HOTNAs) by anodization of Ti foil industrial grade in ethylene glycol electrolyte containing 0.3% of ammonium fluoride and 2% of water at 30 V for 90 minutes was conducted. The morphology structure, chemical composition, functional group, crystal phase, and optical properties of HOTNAs were characterized by field emission scanning electron microscope (FE-SEM), Energy Dispersive X-Ray (EDX),Fourier transform infra-red spectroscopy (FTIR), X-ray diffraction (XRD), and ultraviolet visible diffuse reflectance spectroscopy (UV/Vis-DRS). The well-ordered nanotube with vertically oriented structure was formed in the HOTNAs having size in diameter, length, and wall thickness of 48,0 nm, 1,8 µm, and 26,7 nm, respectively. The fabricated HOTNAs were evaluated for their sensing properties for CO detection. The results show that the fabricated HOTNAs were able to detect 2500 ppm of CO gas with response about 93,429 at operation temperature 150 °C. This preliminary study of sensing performance demonstrates that the prepared HOTNAs under this study is potential and promising as a material sensor for CO detection.

Light-Harvesting Metal-Organic Frameworks (MOFs) La-PTC for Photocatalytic Dyes Degradation Agustino Zulys; Adawiah Adawiah; Jarnuzi Gunlazuardi; Muhammad Derry Luthfi Yudhi
Bulletin of Chemical Reaction Engineering & Catalysis 2021: BCREC Volume 16 Issue 1 Year 2021 (March 2021)
Publisher : Department of Chemical Engineering - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.16.1.10309.170-178

A novel porous metal organic framework, La-PTC was synthesized by solvothermal method using a perylene-3,4,9,10-tetracarboxylate ligand and lanthanum metal ion. The FTIR analysis showed that La-PTC has a different structure with PTCDA and Na4PTC. The La-PTC MOF has high crystallinity, bandgap energy of 2.21 eV with a maximum absorption area at 561 nm. A rod shape structure of La-PTC has been obtained with the surface area of 22.2364 m2.g−1 and classified into mesoporous material. The La-PTC was relative stable up to 376.93 °C. The La-PTC can degrade 64.76% of MO within ca. 240 min under visible light irradiation with the amount of 30 mg La-PTC. The addition of H2O2 improved the photocatalytic activity of La-PTC with degradation efficiency of 67.02%, 70.00%, and 99.60% for MB, RhB, and MO, respectively. This study presents the fabrication of the light-harvesting metal organic framework, La-PTC and its potential in dyes degradation. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

FABRIKASI SEL SURYA TERSENSITASI ZAT WARNA ALIZARIN RED S BERBASIS TIO2 - NANOTUBE BERBENTUK SERBUK YANG DIPEROLEH DARI TEKNIK RAPID BREAKDOWN ANODIZATION (RBA) Linda J Kusumawardani; Jarnuzi Gunlazuardi
EKOLOGIA Vol 16, No 2 (2016): JURNAL ILMIAH ILMU DASAR DAN LINGKUNGAN HIDUP
Publisher : Universitas Pakuan

TiO2 semiconductor is a material that can be expected to play an important role to solve the energy crisis problem through the utilization of solar energy based on photovoltaic devices. Dye sensitized Solar Cells (DSSC) is a cheaper alternative to silicon-based photovoltaic cells. In this study, TiO2 nanotube powder is using for the DSSC fabrication process which is produced by Rapid Breakdown Anodization (RBA) technique. Alizarin red S is also used as a sensitizer and the counter electrode is prepared from a deposition of 5 mM H2PtCl6 solution as a Pt particle on a fluorine-doped tin oxide (FTO) glass substrate. TiO2 / FTO in DSSC system characterized by FESEM, obtained TiO2 film thickness about 1,6-1,7 ?m and UV-Vis Spectrophotometer. Testing the efficiency value is measured by linear method Sweep Voltametry using potentiostat. The efficiency of converting light energy to electric current obtained is 2.63% and open circuit voltage is 361 mV.Key words : DSSC, Rapid Breakdown Anodization (RBA), Anodization, TiO2 , TiO2 Nanotube-Powder

STUDI PREPARASI TIO2 NANOTUBE SERBUK DENGAN TEKNIK RAPID BREAKDOWN ANODIZATION Linda J Kusumawardanil; Ivandini Tribidasari; Jarnuzi Gunlazuardi
EKOLOGIA Vol 16, No 1 (2016): JURNAL ILMIAH ILMU DASAR DAN LINGKUNGAN HIDUP
Publisher : Universitas Pakuan

Technique of Rapid Breakdown Anodization (RBA) is the new anodisasi technique introduced in 2009 as super fast synthesis methods for producing TiO2 powder. The development of this technique continues to be done in order to obtain the best quality of TiO2 powders according to the needs of the application. At this time the experiment reported the existence of the influence the granting of potential anodisasi currently underway against TiO2 powder produced good particle size, surface area and shape of the morfologinya. In addition, observations on the reaction time is also conducted to take into account the efficiency. From the results of the experiment, potential variations below 20 V, i.e., 10, 13, 14 and 15 V, it can be reported that the plate It can be transformed into the perfect TiO2 powder on electrochemical reaction of potential system 15 V for approximately 3 hours in perchloric acid media 0.15 M. Whereas the process of potential reactions on 10, 13 and 14 V does not produce TiO2 powder significantly in the time of observation for 7 hours. So further study focused on the synthesis of TiO2 powder results in a potential 15 V which will be compared with the potential 20 V, which is a potential that is used when this technique was first introduced. From the results of the experiment, reported on the potential RBA engineering 15 V produces TiO2 powder with a size outer diameter are smaller, i.e. an average of 84 nm with a more uniform particle size and surface area of the Crystal results kalsinasi at 500oC generated on 15 potential V is wider with a more uniform morphology, i.e. 69.723 g/m2 compared to 20 V , i.e. 63.824 g/m2. This will provide a significant influence in the activity of the fotokatalitik used for the fotodegradasi, as well as its application as DSSC (Dye Sensitized Solar Cells).KeyWord :Rapid Breakdown Anodization (RBA), Anodisasi, TiO2, TiO2 Nanotube-Serbuk

Application of TiO2 Nanotube As Photoelectrode For Corrosion Prevention Of Stainless Steel In pH Variation of NaCl Misriyani Misriyani; Abdul Wahid Wahab; Paulina Taba; Jarnuzi Gunlazuardi
Indonesian Journal of Chemical Research Vol 3 No 1 (2015): Edisi Bulan Juli (Edition For July)
Publisher : Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar

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.

Influence of Operational Parameters on the Photocatalytic Activity of Powdered TiO2 for the Reduction of CO2 Oman Zuas; Jin Seog Kim; Jarnuzi Gunlazuardi
Indonesian Journal of Chemistry Vol 14, No 2 (2014)
Publisher : Universitas Gadjah Mada

In this report, the results from a study on the influence of operational parameters on TiO2 photocatalytic activity for CO2 reduction under an ultraviolet-visible (UV-vis) illumination are presented. The results indicated that the TiO2 was found to be active for CO2 reduction with CH3OH as the major products, while other minor products (CO, CH4, and C2H4) were also detected. In addition, the formation of such reduction products was obviously influenced by the operational parameters. Under this study, the optimum operational parameters for CO2 reduction at 298 °K were determined to be: NaOH concentration 0.2 M, TiO2 dosage 2 g/L, volume of the reaction media 75 mL, the pressure of system 800 kPa. It was also found that the increase in UV-vis illumination time have increased the yield of product formation. A possible reaction pathway for the formation of the reduction products is also discussed.

Co-Authors Abdul Wahid Wahab Adawiah Adawiah Adel Fisli Agustino Zulys Andri Hermansyah Ariani, Jenny Damayanti, Elok Einaga, Yasuaki Endang Saepudin, Endang Harry Budiman Hedi Surahman Hedi Surahman Ida Nur Apriani Apriani Irkham Irkham Isnaini Rahmawati Ivandini T. Anggraningrum Jin Seog Kim Khoiriah Khoiriah Linda J Kusumawardani Maemonah, Maemonah Misriyani Misriyani Muhammad Derry Luthfi Yudhi Muhammad Faisal Muhammad Ibadurrohman Muhammad Iqbal Syauqi Neil V. Rees Oman Zuas Oman Zuas Paulina Taba Prastika Krisma Jiwanti Priantini, Tania Prita Amelia Prita Amelia Rahmat Wibowo Rahmat Wibowo Rahmat Wibowo Ratnawati Ratnawati Ridwan, Ridwan Robert, Didier Safni Safni Saragi, Indah Revita Slamet Slamet Suharyadi Suharyadi Supriyono Supriyono Supriyono Supriyono Viona Wongso Wellia, Diana Vanda Yasuaki Einaga Yunarti, Rika Tri Yuni K Krisnandi Yuni Krisyuningsih Krisnandi, Yuni Krisyuningsih Yunita Yunita

Title

Found 25 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 25 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 25 Documents
Search