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All Journal Jurnal Sains dan Seni ITS Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Riset Kimia ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry Communications in Science and Technology Chemistry Indonesian Journal of Chemical Research Nusantara Science and Technology Proceedings PIKAT Sewagati Bulletin of Chemical Reaction Engineering & Catalysis
Kusumawati, Yuly
Institut Teknologi Sepuluh Nopember
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Perbandingan Efektivitas Dekolorisasi Fotokatalitik Metilen Biru dan Metil Jingga menggunakan Semikonduktor ZnO pada Variasi pH Dewi, Annisa M.; Widayatno, Wahyu B.; Kusumawati, Yuly
Jurnal Riset Kimia Vol 10, No 2 (2019): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v10i2.328

Abstract

The comparison of photocatalytic decolorization of Methylene Blue and Methyl Orange using ZnO Semiconductor under UV-LED radiation has been studied at varied pH. ZnO have been synthesized using co-precipitation method. The Scanning Electron Microscopy (SEM) result showed that the synthesized ZnO has a hexagonal structure with the particle size range 0.125 to 0.5 µm. The BET isotherm characterization showed the synthesized ZnO has a specific surface area (SBET), mesoporous volume and micropore volume of 60.20 m2/g, 0.541 cm3/g and 0.02 cm3/g, respectively. The observation of the effect of pH to the photocatalytic activity showed that the highest removal percentage occurred at pH 9 with the value of 95.64% for methylene blue and occurred at pH 3 with the value of 6.236% for methyl orange. 
Effect of Dope Composition and Additive Agent on the Properties of La0.6Sr04Co0.2Fe0.8O3-? Asymmetric Flat Membranes Nurherdiana, Silvana Dwi; Habib, Mohammad Hasnan; Utomo, Wahyu Prasetyo; Kusumawati, Yuly; Akhlus, Syafsir; Fansuri, , Hamzah
Nusantara Science and Technology Proceedings 1st International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2020.0541

Abstract

In this study, the La0.6Sr0.4Co0.2Fe0.8O3-? (LSCF 6428) asymmetric flat membrane was successfully fabricated using a based-phase inversion technique. The effect of different dope composition and molecular weight of polyethylene glycol (PEG) as a pore-forming agent were investigated to identify the membrane properties in term of uniformly pore configuration and the mechanical strength. The result showed that the addition of dimethyl sulfoxide (DMSO) as the solvent in varied compositions exhibits different morphology and the most uniform finger-like pores with a diameter of 22 ?m were formed using 5.0 ml DMSO. Based on the uniformity of the pores, 5.0 ml DMSO was further used to study the effect of PEG addition. A highly uniform porous configuration with a pore diameter of 17 ?m, less dense layer thickness, the high mechanical strength of 507.2 Hv, and good thermal expansion behavior was achieved when 0.39% PEG 8000 was added. Such PEG 8000 is promoted additive to adjust the LSCF membrane porous configuration parameter to improve oxygen permeation and catalytic performance on partial oxidation of methane.
Sintesis MOF Biner UiO-66/HKUST-1 Dengan Metode Solvotermal Liyana Labiba Zulfa; Ratna Ediati; Yuly Kusumawati
Jurnal Sains dan Seni ITS Vol 8, No 1 (2019)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LPPM), ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1020.413 KB) | DOI: 10.12962/j23373520.v8i1.41982

Abstract

Padatan HKUST-1, UiO-66, dan MOF biner UiO-66/HKUST-1 telah berhasil disintesis menggunakan metode solvotermal secara one pot process. Sintesis padatan MOF biner UiO-66/HKUST-1 dilakukan dengan penambahan variasi jumlah UiO-66 sebesar 5, 10, dan 20% terhadap jumlah HKUST-1. Padatan hasil sintesis dikarakterisasi menggunakan instrumen XRD, FTIR dan SEM. Difraktogram hasil sintesis memiliki puncak karakteristik pada 2θ = 6,7°; 9,5°; 11°, 54°; dan 19° untuk padatan HKUST-1; 7, 34°, 8,3° dan 25,6° untuk padatan UiO-66; 6,64°, 7,18°, 9,36°, 11,5° dan 18,9° untuk padatan MOF biner. Analisa FTIR menunjukkan bahwa MOF biner hasil sintesis memiliki daerah serapan yang sama dengan padatan HKUST-1 dan UiO-66. Mikrograf MOF Biner hasil sintesis menunjukkan terdapat perpaduan morfologi antara HKUST-1 dan UiO-66.  
Perbandingan Efektivitas Dekolorisasi Fotokatalitik Metilen Biru dan Metil Jingga menggunakan Semikonduktor ZnO pada Variasi pH Annisa M. Dewi; Wahyu B. Widayatno; Yuly Kusumawati
Jurnal Riset Kimia Vol. 10 No. 2 (2019): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v10i2.328

Abstract

The comparison of photocatalytic decolorization of Methylene Blue and Methyl Orange using ZnO Semiconductor under UV-LED radiation has been studied at varied pH. ZnO have been synthesized using co-precipitation method. The Scanning Electron Microscopy (SEM) result showed that the synthesized ZnO has a hexagonal structure with the particle size range 0.125 to 0.5 µm. The BET isotherm characterization showed the synthesized ZnO has a specific surface area (SBET), mesoporous volume and micropore volume of 60.20 m2/g, 0.541 cm3/g and 0.02 cm3/g, respectively. The observation of the effect of pH to the photocatalytic activity showed that the highest removal percentage occurred at pH 9 with the value of 95.64% for methylene blue and occurred at pH 3 with the value of 6.236% for methyl orange. 
Brief Overview of Perovskite Oxide: Synthesis and Its Performance as Oxygen Separator from Air Silvana Dwi Nurherdiana; Rachmad Ramadhan Yogaswara; Nove Kartika Erliyanti; Atika Nandini; Mutasim Billah; Sintha Soraya Santi; Hamzah Fansuri; Mohd Hafiz Dzarfan Othman; Yuly Kusumawati; Syafsir Akhlus
Nusantara Science and Technology Proceedings 2nd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

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

Abstract

The aims of this brief overview are providing the knowledge about the physical and chemical properties of perovskite oxides in various synthesis method and the correlation of its performance for separating oxygen from air. Perovskite oxide showed excellent conductor of ion and electron, simultaneously through oxygen lattice in the crystal structure. In the present review, we have presented the detail on the crystal structure and the factor that affect the pseudo-crystal, various synthesis method i.e., solid-state, sol-gel, combustion, and co-precipitation. It has been completed with the discussion of the characteristic and the mechanism of the perovskite to separate oxygen from air
Combined Computational and Experimental Study the Effect of Doped Magnesium into Betanine-sensitized TiO2 Photoanode for Dye-Sensitized Solar Cells Application Yuly Kusumawati; Nanik Ismi Oktavianti; Linda Wati Oktavia; Nurul Widiastuti; Lukman Atmaja; Nur Izzati Abu Bakar; Nur Hadi
Indonesian Journal of Chemistry Vol 19, No 4 (2019)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (15.743 KB) | DOI: 10.22146/ijc.36861

Abstract

A preliminary study of the effect of magnesium-doped into betanine-sensitized TiO2 thin layers has been carried out computationally and experimentally. The computational calculation was performed to observe the effect of magnesium on the interaction molecular of betanine onto TiO2 surface, using Ti12O28H8 model cluster. It was found out that the distance of the oxygen on the anchoring site betanine with the Ti in TiO2/Mg cluster is shortercompare to that one in TiO2 cluster. This result confirms the bond between betanine and TiO2 is stronger in the case of Mg2+ incorporation. The Natural Population Calculation also confirms that the electron transport from betanine to the TiO2 is more facilitated after Mg2+ incorporation. These results are also supported by the HOMO-LUMO profile of TiO2-betanine and TiO2/Mg. The XRD and SEM measurement confirm those are no effect on the TiO2 structure and morphology with the incorporation of Mg2+. The thin-film UV-Vis measurement confirms there is a bandgap sift after the incorporation of Mg.
PENERAPAN MEMBRAN REVERSE-OSMOSIS DI LINGKUNGAN PANTI ASUHAN YATIM AISYIYAH BALONGBENDO UNTUK MEMENUHI KEBUTUHAN AIR MINUM Nurul Widiastuti; Triyanda Gunawan; Hamzah Fansuri; Syafsir Akhlus; Yuly Kusumawati; Harmami
Jurnal Pengabdian Kepada Masyarakat ITK (PIKAT) Vol. 2 No. 2 (2021): PIKAT : Jurnal Pengabdian Kepada Masyarakat
Publisher : LPPM Institut Teknologi Kalimantan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (665.456 KB) | DOI: 10.35718/pikat.v2i2.616

Abstract

Pada program pengabdian masyarakat berbasis produk yang dilakukan Tim Abdimas Institut Teknologi Sepuluh Nopember (ITS) dihasilkan alat produksi air minum menggunakan perpaduan teknologi membran Reverse-Osmosis (RO), adsorben dan sinar UV yang sesuai dengan baku mutu air dari air sumur di Panti Asuhan Yatim Aisyiyah (PAY Aisyiyah). Kegiatan ini meliputi desain penyaring air yang menghasilkan standar air minum, rancangan bisnis air minum, kemasan produk air minum dan perawatan alat penyaring air. Uji mutu air minum yang dihasilkan dari sumber air sumur di PAY Aisyiyah dilakukan di labaratorium sesuai dengan standar baku mutu air. Berdasarkan hasil analisa dari air sesudah diolah telah memenuhi beberapa parameter sesuai Permenkes No. 492/MENKES/PER/IV/2010. Selain itu, air minum yang dihasilkan masih terdapat kandungan mineral yang dibutuhkan tubuh meliputi Fe, Mn, Zn, Cl, dan F. Sosialisasi telah dilakukan untuk memberikan pengetahuan mengenai pengolahan air minum dan perawatan alat yang benar, serta akan dilakukan pengawasan dan evaluasi secara berkala agar alat penjernih air dapat digunakan secara berkelanjutan guna memenuhi kebutuhan air bersih dan air minum lingkungan PAY Aisyiyah dan prospek kedepan untuk bisnis air minum di PAY Aisyiyah.
Decolorization of Methylene Blue Dye Using ZnO/ZSM-5 Photocatalyst Under UV-LED Irradiation Lely Dwi Astuti; Yuly Kusumawati; Didik Prasetyoko; Wahyu Bambang Widayatno; Abdul Hamid
ALCHEMY Jurnal Penelitian Kimia Vol 16, No 2 (2020): September
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.16.2.42985.232-239

Abstract

The present research studied about decolorization of methylene blue dye using photocatalyst ZnO/ZSM-5 under UV-LED lamp. ZnO/ZSM-5 was synthesized using the impregnation method by adding two grams ZSM-5 to Zn solution 0.3 M 10 mL. Photocatalyst was characterized using X-ray diffractometer (XRD), Fourier transform infrared (FTIR), field emission scanning electron microscopy-energy dispersive X-Ray (FESEM-EDX), and surface area analyzer (SAA). Analysis using XRD show addition characteristic peaks of ZnO at 2θ 31.60°, 34.21°, 36.08°, 47.35°, 56.50°, 62.73°, 67.83°, that indicates a successful impregnation process. The photocatalysis activity test was done on methylene blue dye 100 mg L-1. ZSM-5 and ZnO activities were tested under UV-LED irradiation and dark conditions. Data showed that percent removal of dye occurred on ZnO/ZSM-5 under 15 minutes irradiation is 78.32%.
The Effect of Variations in Calcination Temperature on the Character of ZnO and ZnO/Mopl-CTAB in Degrading Methyl Orange Aulia Dewi Rosanti; Fahmi Hidayat; Yuly Kusumawati; Arif Fadlan; Rizky Arief Shobirin; Fanni Kurnia Wijaya
Bulletin of Chemical Reaction Engineering & Catalysis 2023: BCREC Volume 18 Issue 2 Year 2023 (July 2023, Issue in Progress)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.18305

Abstract

Medan orange peel (Mopl), which has been modified using cetyltrimethylammonium bromide (CTAB), has the potential to adsorb methyl orange (MO), and thus it can be used as a supporting material for ZnO. The ZnO is a photocatalytic material that is environmentally friendly, inexpensive, non-toxic, and has a wide band gap value. This study aims to determine the effect of calcination temperature on ZnO and ZnO characteristics due to modification using Mopl-CTAB and its effect on the degradation of MO. This research was carried out by synthesizing ZnO and ZnO/Mopl-CTAB materials using impregnation method and varying the calcination temperatures at 150, 250, 350, and 450 °C. The solid material powder obtained was characterized by using Scanning Electron Microscope-Energy Dispersive X-ray (SEM-EDX), Brunauer–Emmett–Teller (BET), Fourier Transform Infra Red (FTIR), X-ray Diffraction (XRD), and Diffuse Reflectance Spectroscopy (DRS). Based on the results of the characterization, greater calcination temperature can affect the characteristics of the photocatalyst, including its morphology, functional groups, crystal structure, crystal lattice, crystallinity, surface area, pore size, pore volume, and energy band gap. The MO photodegradation activity test using the synthesized material was conducted under dark and light conditions. The results of the test revealed that the best or optimum material to be used in degrading MO is a calcined material at 450 °C under light conditions. ZnO material using Mopl-CTAB is better in degrading ZnO/Mopl-CTAB 450 °C than ZnO 450 °C. This study found that ZnO material using Mopl-CTAB  had a percent removal of 78% in 50 min, while ZnO 450 °C only had a percent removal of 53% in 40 min. The reaction kinetics in dark and light conditions follow the pseudo-second-order kinetic model. Copyright © 2023 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). 
Facile Production of Biodiesel from Candlenut Oil (Aleurites moluccana L.) Using Photocatalytic Method by Nano Sized-ZnO Photocatalytic Agent Synthesized via Polyol Method Hendro Juwono; Anisun Zakiyah; Riki Subagyo; Yuly Kusumawati
Indonesian Journal of Chemistry Vol 23, No 5 (2023)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.82895

Abstract

Biodiesel production from non-edible oil is an alternative way to reduce edible oil dependency and reduce the competition for feed and food. Candlenut oil (Aleurites moluccana L.) is one of the non-edible oils which can be used as feedstock for biodiesel production since they have a high oil content. Herein, the biodiesel production from candlenut oil has been conducted using zinc oxide (ZnO) synthesized by the polyol method. Polyol methods facilitated the formation of ZnO nanoparticles with various shapes, including spherical, rod, and hexagonal. Besides, ZnO showed a mesoporous characteristic, facilitating the conversion of fat fatty acid to fatty acid methyl ester (FAME) of 61%. Increasing ZnO dosage led to enhancing the FAME yield. Similarly, the FAME yield was also improved by increasing the reaction time. The results of esterification of candlenut oil and methanol yielded 70.76% FAME with 2% nano-ZnO polyol catalyst at 180 min reaction time at room temperature whilst being stirred constantly at 400 rpm. A good FAME conversion using ZnO at room temperature provides good information to produce biodiesel with a simple method. Apart from that, photocatalytic promoted transesterification at room temperature, which is beneficial for reducing energy consumption.
Co-Authors Abdul Hamid Abdullah, Romario Aishah Abdul Jalil Anisun Zakiyah Annisa M. Dewi Astira, Dinia Dewi, Annisa M. Didik Prasetyoko Erliyanti, Nove Kartika Fadlan, Arif Fadlan, Arif Fahmi Hidayat Fanni Kurnia Wijaya Fansuri, , Hamzah Fensia Analda Souhoka Gunawan, Triyanda Gunawan, Triyanda Habib, Mohammad Hasnan Hafiz Dzarfan Othman, Mohd Hamzah Fansuri Harmami Harmami Hellna Tehubijuluw Hendro Juwono Lely Dwi Astuti Linda Wati Oktavia Liyana Labiba Zulfa Lukman Atmaja Mohd Hafiz Dzarfan Othman Mutasim Billah Nandini , Atika Nanik Ismi Oktavianti Nugraha, Reva Edra Nugraheni, Zjahra Vianita Nur Hadi Nur Izzati Abu Bakar Nurul - Widiastuti Oktavina Kartika Putri Perry Burhan, Perry Rachmad Ramadhan Yogaswara Rahmad Widyanto, Alvin Rahmawati, Zeni Ratna Ediati Riki Subagyo Rizky Arief Shobirin Rosanti, Aulia Dewi Silvana Dwi Nurherdiana Sintha Soraya Santi Subagyo, Riki Syafsir Akhlus Syafsir Akhlus, Syafsir Wahyu B. Widayatno Wahyu Bambang Widayatno Wahyu Prasetyo Utomo Widayatno, Wahyu B. Zetra, Yulfi Zulfiani, Utari