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All Journal International Journal of Renewable Energy Development JURNAL KIMIA SAINS DAN APLIKASI Alchemy : Journal of Chemistry Jurnal Kimia Riset Science and Technology Indonesia Jurnal Penelitian Pendidikan IPA (JPPIPA) Indonesian Journal of Chemistry Communications in Science and Technology Chemistry Indonesian Journal of Chemical Research Kumawula: Jurnal Pengabdian Kepada Masyarakat Sains dan Matematika Indonesian Journal of Chemical Science and Technology Jurnal Pijar MIPA Unesa Journal of Chemistry Molekul: Jurnal Ilmiah Kimia
Pirim Setiarso
Universitas Negeri Surabaya
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Physics Social Sciences

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Studi Elektrokimia Klorofil dan Antosianin Sebagai Fotosensitizer DSSC (Dye-Sensitized Solar Cell) Rimbi Rodiyana Sova; Pirim Setiarso
Unesa Journal of Chemistry Vol 10 No 2 (2021)
Publisher : Department of Chemistry, Faculty of Mathematics and Natural Sciences, Surabaya State University, located at Jl Ketintang, Surabaya, East Java, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (348.731 KB) | DOI: 10.26740/ujc.v10n2.p191-199

Abstract

Abstrak. Pada penelitian ini dilakukan analisis elektrokimia ekstrak klorofil dan antosianin dari daun suji (Pleomele Angustifolia) dan kulit buah naga merah (Hylocereus Polyrhizus) sebagai sensitizer pada Dye-Sensitized Solar Cell (DSSC). Klorofil dari daun suji dan antosianin dari kulit buah naga merah diekstraksi menggunakan pelarut etanol. Karakterisasi klorofil dan antosianin dilakukan dengan menggunakan spektrofotometri UV-Visible untuk mengetahui serapan panjang gelombang dan celah pita energi, karakterisasi elektrokimia klorofil dan antosianin dilakukan menggunakan voltametri siklik. Pada penelitian ini dihasilkan klorofil dengan serapan panjang gelombang sebesar 663 nm dan 439 nm sedangkan antosianin pada panjang gelombang 532 nm. Analisis celah pita energi (energy gap) klorofil menghasilkan 2,51 eV dan antosianin 2,1 eV. Karakterisasi elektrokimia menunjukkan bahwa energi HOMO (Highest Occupied Molecular Orbital) pada klorofil sebesar -5,68 eV dan pada antosianin sebesar -5,16 eV. Energi LUMO (Lowest Unoccupied Molecular Orbital) pada klorofil sebesar -3,17 eV dan pada antosianin sebesar -3,06 eV. Hasil ini menunjukkan bahwa ekstrak klorofil dan antosianin dari daun suji dan kulit buah naga merah cukup menjanjikan untuk digunakan sebagai fotosensitizer pada DSSC. Kata kunci : antosianin, DSSC, elektrokimia, klorofil Abstract. In this study, an electrochemical analysis of chlorophyll and anthocyanin extracts from suji (Pleomele Angustifolia) leaves and red dragon fruit skin (Hylocereus Polyrhizus) was conducted as a sensitizer to Dye-Sensitized Solar Cell (DSSC). Chlorophyll from suji leaves and anthocyanins from the skin of red dragon fruit were extracted using ethanol as a solvent. Chlorophyll and anthocyanin characterization was carried out by UV-Visible spectrophotometry to see the absorption of wavelength and energy bandgaps, electrochemical characterization of chlorophyll and anthocyanins was carried out using cyclic voltammetry. In this study, chlorophyll was produced with absorption wavelengths of 663 nm and 439 nm while anthocyanins were at 532 nm wavelengths. Analysis of the energy gap of chlorophyll yields 2.51 eV and anthocyanins 2.1 eV. The electrochemical characterization showed that the energy of HOMO (Highest Occupied Molecular Orbital) in chlorophyll was -5.68 eV and in anthocyanins was -5.16 eV. The energy of LUMO (Lowest Unoccupied Molecular Orbital) in chlorophyll is -3.17 eV and in anthocyanins is -3.06 eV. These results indicate that chlorophyll and anthocyanin extracts from suji leaves and red dragon fruit peel are sufficient to be used as photosensitizers in DSSC. Key words: anthocyanin, chlorophyll, DSSC, electrochemical
Effect of natural dye combination and pH extraction on the performance of dye-sensitized photovoltaics solar cell Estiningtyas, Indri Wasa; Kusumawati, Nita; Setiarso, Pirim; Muslim, Supari; Rahayu, Nunik Tri; Safitri, Riska Nur; Zakiyah, Nafisatus; Fachrirakarsie, Fadlurachman Faizal
International Journal of Renewable Energy Development Vol 12, No 6 (2023): November 2023
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2023.56172

Abstract

Dyes are significant components in Dye Sensitized Solar Cell (DSSC) performance because they act as photosensitizers. Natural dye-based DSSC system fabrication innovations continue to be produced in an effort to improve DSSC performance efficiency. In this study, a DSSC system was developed using double components of natural dyes as natural photosensitizers to enhance DSSC efficiency. This method of making natural dye-based DSSC uses a combination of dye extracts from two different dye sources that have the potential as natural photosensitizers in DSSC. The research aims to investigate the impact of the combined use of two natural dyes and pH variations on DSSC performance. DSSC performance measurements encompass the short-circuit current (Isc), open-circuit voltage (Voc), and DSSC efficiency parameters. The obtained results indicate efficiency values for dyes (a) sappan wood/ethanol and turmeric/methanol; (b) turmeric/methanol and beetroot/ethanol; and (c) beetroot/ethanol and turmeric/distilled water. At neutral pH, the efficiency values are 2.09%, 2.10%, and 2.19%, respectively. Meanwhile, at acidic pH of 2.59%; 2.39%; and 2.71%. Notably, the dye efficiency values at acidic pH surpass those found at neutral pH conditions. The highest efficiency is observed in the combination of dye (c) beetroot/ethanol and turmeric/distilled water with efficiency reaching 2.71% at acidic pH.
Optimization Thickness of Photoanode Layer and Membrane as Electrolyte Trapping Medium for Improvement Dye-Sensitized Solar Cell Performance Kusumawati, Nita; Setiarso, Pirim; Muslim, Supari; Hafidha, Qonita Arky; Cahyani, Sinta Anjas; Fachrirakarsie, Fadlurachman Faizal
Science and Technology Indonesia Vol. 9 No. 1 (2024): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.1.7-16

Abstract

Dye-Sensitized Solar Cells (DSSC) are photovoltaic devices that contain a dye that acts as a solar light acceptor. The use of dyesensitized solar cells to solve increasing energy demand and environmental problems still results in low efficiency values. In this study, optimization of DSSC components was carried out to increase DSSC efficiency by varying the thickness of the titanium dioxide (TiO2) semiconductor photoanode layer, polyvinylidene fluoride (PVDF) trap electrolyte membrane, and polyvinylidene fluoride nanofiber (PVDF NF) to obtain the optimum thickness. Scanning Electron Microscope (SEM) results of membrane thickness variation and titanium dioxide (TiO2) semiconductor photoanode coating showed the formation of nanofiber fibers composed of three-dimensional, porous, and diameter networks connected to the PVDF NF membrane. The increase in density and decrease in pore size, along with an increase in thickness and cracking as the TiO2 photoanode semiconductor layer increases, affect the electron transport rate of the DSSC. The higher particle density level will inhibit the electron transport rate, so it can reduce the efficiency of DSSC. The optimum thickness of the TiO2 semiconductor layer and PVDF NF electrolyte membrane of 0.20 mm and 0.35 mm can produce values, voltage, fill factor current density, and electrical efficiency of 500 mV, 2.7 x 10−3 mA.cm−2, 1.80%, and 2.40%, respectively.
The Fabrication of ZnO Nanoparticles-Modified Carbon Paste Electrode for the Analysis of Nicotine Content in E-Cigarette Liquids by Cyclic Voltammetry Fatihah, Vita Ayu; Setiarso, Pirim
Indonesian Journal of Chemical Research Vol 12 No 2 (2024): Edition for September 2024
Publisher : Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2024.12-vit

Abstract

ZnO nanoparticles were used as composites on carbon paste working electrodes to enhance electrode performance in the analysis of nicotine content in e-cigarette liquids by voltammetry cyclic. The optimum composition and condition (pH and scan rate) were determined to identify the conditions that gave the best response. ZnO nanoparticles were synthesized using the sol-gel method and characterized by FTIR, XRD, and SEM. The determination of optimum composition and conditions was studied using cyclic voltammetry. The determination of nicotine content in e-cigarette liquids was analyzed by cyclic voltammetry. The electrode composition that gave the best response was 3:5:2 (carbon: nanoparticles ZnO: paraffin). The optimum conditions for nicotine determination by cyclic voltammetry were at pH 8 and a scan rate of 90 mVs-1. The cyclic voltammetry’s limit detection (LoD) using a ZnO nanoparticles-modified carbon paste electrode is 0.00678 mg/mL, and the percent recovery is 100.35%.
Fabrication of Carbon Paste Electrode Modified with ZnO Nanoparticles and Nanobentonite for Analysis of Bisphenol A by Cyclic Voltammetric Febriyana, Andini; Setiarso, Pirim
Indonesian Journal of Chemical Research Vol 12 No 2 (2024): Edition for September 2024
Publisher : Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2024.12-and

Abstract

The Bisphenol A (BPA) is a 2,2-bis(4-hydroxyphenyl) propane compound that is produced on a large scale for industrial applications, particularly in polycarbonate plastics. BPA molecules can migrate from plastics into food if stored at high temperatures and for extended periods. Various methods have been developed for BPA analysis, including cyclic voltammetry. This study focuses on the fabrication and application of a carbon paste electrode (CPE) modified with ZnO nanoparticles and nanobentonite for the analysis of BPA in polycarbonate-based bottled drinking water using cyclic voltammetry. The results showed that the optimal electrode conditions were: electrode composition 3:4:1:2 (carbon: nanobentonite: ZnO nanoparticles: paraffin), and pH 7. The BPA content obtained by cyclic voltammetry for brands A, B, and C was 0.2102; 0.1752; and 0.2210 mM. These results demonstrate that cyclic voltammetry with a ZnO nanoparticle and nanobentonite modified carbon paste electrode can be used for BPA analysis.
Study in the impact of quaternized graphene oxide (QGO) composition as modifier on the chemical, physical, mechanical, and performance properties of polyvinylidene fluoride (PVDF)-based nanocomposite membrane Ashabul Kahfi; Kusumawati, Nita; Setiarso, Pirim; Supari Muslim; Sinta Anjas Cahyani; Nafisatus Zakiyah
Communications in Science and Technology Vol 9 No 1 (2024)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.9.1.2024.1393

Abstract

Polyvinylidene Fluoride (PVDF) membranes were modified with quaternized graphene oxide (QGO) synthesized from graphene oxide and quaternized ammonium groups. PVDF/QGO membranes were created by blending PVDF and 0.01-0.05 g QGO via phase inversion. FTIR confirmed the successful QGO incorporation. PVDF/QGO membranes exhibited increased mechanical stiffness. Meanwhile, SEM revealed asymmetric morphology with surface and internal pores. AFM showed the membrane with 0.05 g and QGO had the highest surface roughness of 101.2 nm, which increased filtration area and flux. QGO improved hydrophilicity through hydroxyl and quaternary ammonium groups, enhancing water flux up to 1208 Lm?2h?1 for 0.05 g QGO. Cu2+ rejection increased to 75% for 0.05 g QGO membrane due to chelation and adsorption effects. PVDF/QGO membranes displayed bacterial growth inhibition, unlike pristine PVDF. The inhibition zone diameter increased with more QGO, indicating improved antibacterial activity. Overall, this study demonstrated that QGO improved PVDF membranes' hydrophilicity, antibacterial properties, and mechanical strength.
Effect of layered double hydroxide-graphene oxide modifier composition on characteristics of polyvinylidene fluoride based nanocomposite membranes in the separation of Cu2+ Kusumawati, Nita; Setiarso, Pirim; Supari Muslim; Sinta Anjas Cahyani; Nafisatus Zakiyah; Kahfi, Ashabul
Communications in Science and Technology Vol 9 No 1 (2024)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.9.1.2024.1440

Abstract

This research explored the modified polyvinylidene fluoride (PVDF) nanofiber membranes with a composite of layered double hydroxide (LDH) and graphene oxide (GO) to enhance biofouling resistance. The PVDF/LDH-GO nanocomposite membranes were synthesized via vacuum filtration. FTIR analysis confirmed nanocomposite formation with new peaks indicating the presence of GO and LDH. Variations in the LDH:GO ratio affected the physical, mechanical, and performance properties of the membranes. Based on SEM imaging, the 1:1 LDH: GO ratio exhibited the highest Young's modulus and smallest pore sizes. LDH-GO incorporation increased the mechanical strength, porosity, roughness, hydrophilicity, and pure water permeability of the PVDF membranes. The combination of these factors led to balanced permeability and selectivity values towards Cu2+ solution feeds. LDH-GO was proven effective in modifying the PVDF membrane surface for water treatment and inhibiting biofouling up to 64% against E. coli.
Characterization and Application of Natural Photosensitizer and Poly(vinylidene Fluoride) Nanofiber Membranes-Based Electrolytes in DSSC Zakiyah, Nafisatus; Kusumawati, Nita; Setiarso, Pirim; Muslim, Supari; A'yun, Qurrota; Putri, Marinda Mayliansarisyah
Indonesian Journal of Chemistry Vol 24, No 3 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.86386

Abstract

This comprehensive research has explored the potential of enhancing dye-sensitized solar cells (DSSC) by harnessing environmentally friendly natural dyes, such as chlorophyll pigments from pandanus (664.1 nm) and papaya leaves (664.0 nm), as well as betacyanin pigments from sappan-mangosteen (536.2 nm). Electrochemical analyses elucidated the energy band gaps, revealing a hierarchy with the smallest band gap observed for papaya leaves (1.387 eV), followed closely by sappan-mangosteen (1.389 eV) and pandan leaves (1.396 eV). This research effectively addressed the persistent issue of electrolyte leakage in DSSC development by introducing a polymer electrolyte derived from polyvinylidene fluoride (PVDF) through electrospinning and phase inversion techniques. SEM characterization results and thermogravimetric analysis underscored the superior characteristics and high thermal stability of the PVDF nanofiber polymer for DSSC applications. The study's pivotal findings underscore the remarkable DSSC performance achieved with chlorophyll pigment from papaya leaves, reaching 1.31% efficiency without a polymer electrolyte. Moreover, the sappan-mangosteen dye emerged as a promising contender with the highest efficiency values when applied with polymer electrolyte, recording rates of 1.17% for PVDF NF and 0.95% for PVDF, which are notably comparable to the efficiency of liquid electrolyte at 1.26%.
Potential Analysis of Quercetin and Its Derivatives as Inhibitors of Hendra Virus (HeV) Rosyiidah, Nur Anisa; Setiarso, Pirim; Sanjaya, I Gusti Made
Indonesian Journal of Chemical Science and Technology (IJCST) Vol 7, No 1 (2024): JANUARY 2024
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v7i1.56448

Abstract

This study aims to determine the inhibitory potential of quercetin and its derivatives on the activity of Hendra virus (HeV) 6BK6 protein with its comparator N-Acetyl-D-[1-13C] Glucosamine. This research was carried out using the molecular docking method in order to obtain information related to binding affinity values, inhibition constants, and amino acid residues in the ligand-receptor hydrogen bonds. It was found that the compound quercetin 3-O-xyloside had the lowest binding affinity among the other compounds, namely -6.92 kcal/mol with an inhibition constant of 8.44 µM. In addition, there are four types of amino acid residues in the ligand-receptor hydrogen bonds including ASP304 (1,90 Å), SER301 (2,47 Å), ARG191 (3,18 Å), and MET188 (4.34 Å). In this case it can be concluded that the compound quercetin 3-O-xyloside has been shown to have the potential to inhibit the activity of the HeV 6BK6 protein.
SYNTHESIS OF NANO-BENTONITE MODIFIED GRAPHENE OXIDE ELECTRODE FOR FORMALDEHYDE ANALYSIS BY CYCLIC VOLTAMMETRY Setiarso, Pirim; Fajrin, Aisyah Rahmatul
Jurnal Kimia Riset Vol. 9 No. 2 (2024): December
Publisher : Universitas Airlangga, Campus C Mulyorejo, Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jkr.v9i2.43669

Abstract

In this research, each graphene oxide and nano-bentonite was synthesized using the Improved Hummers method and the Sonochemical method for formaldehyde detection by cyclic voltammetry. Formaldehyde detection by cyclic voltammetry has several factors to accurately detect formaldehyde, such as electrode composition, the pH of the solution, the deposition time, and the scan rate. In this study, formaldehyde detection using nano-bentonite modified graphene oxide electrode has the optimum electrode composition in the ratio of graphene oxide: paraffin: nano-bentonite 3:2:5, pH of the optimum solution for detection of formaldehyde 4, 10-second deposition time and scan rate 100 mV/sec. Nano-bentonite modified graphene oxide electrode has a detection limit of up to 0.16856 ppm (0.005613 mM) with a recovery of 99.414%. This sensor was successfully applied for formaldehyde measurement in the actual sample and showed good selectivity, sensitivity, reproducibility, and precision.
Co-Authors A'yun, Qurrota Andianita, Tri Dyah Ashabul Kahfi Ashabul Kahfi, Ashabul Ayu Ilfiana Buchari Buchari Cahyani, Sinta Anjas Didin Mujahidin Dina Kartika Maharani Eka Candra Saputra Elsa Rishda Hariningtias ERLITA PUTRI, PUPUT Estiningtyas, Indri Wasa Fachrirakarsie, Fadlurachman Faizal Fajrin, Aisyah Rahmatul Fatihah, Vita Ayu Febriyana, Andini Hafidha, Qonita Arky Harsono, Rifanda Viantiano Hery Widijanto I GUST MADE SANJAYA Ihda Shoumi Nurdini Indah Tri Wahyuni Indah, Rahmalia Indra Noviandri INGGRIANI, FIRMA Khoiriyah, Nuril Kurniawan, Muhammad Ridho Hafid Lenny Yuanita Maria Monica Sianita MAY LUKMANA, KUMININGSIH Monica, Maria Mulyono, Dymarda Indra Santoso Nafisatus Zakiyah Naulia, Kaila Nerry Puspita Sari Nita Kusumawati Nita Kusumawati Nuril Khoiriyah Nurzulla, Weka Firda Rizki Perdana, Raga Agung Putra, Ananta Adita Eka Putri, Marinda Mayliansarisyah Rahayu, Nunik Tri Rahmawati, Khofifatul RAIDAH RUSNADI, WINDA Ramadanti, Awanda Halida Rhamdiyah, Fastabiqul Khairati Rimbi Rodiyana Sova Riska Nur Safitri, Riska Nur Rosyiidah, Nur Anisa Safitri, Rizka Dwi Samik Samik Samik Samik Sanjaya, IGM Sinta Anjas Cahyani Supari Muslim Supari Muslim Suyatno Sutoyo Taufik Hidayatulloh Tukiran Tukiran Wachid, Rochman Wahono Widodo Zakiyah, Nafisatus