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All Journal VALENSI International Journal of Renewable Energy Development JURNAL KIMIA SAINS DAN APLIKASI Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Fisika Unand Jurnal Riset Kimia JFA (Jurnal Fisika dan Aplikasinya) Journal of Aceh Physics Society Elkawnie Lantanida Journal Indonesian Journal of Chemistry Jurnal Katalisator Jurnal Ilmu Fisika Hydrogen: Jurnal Kependidikan Kimia Aceh International Journal of Science and Technology International Journal of Renewable Energy Development Bulletin of Chemical Reaction Engineering & Catalysis
Syukri -
Department Of Chemistry, Andalas University, Jl. Universitas Andalas, Limau Manis, Padang
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Physics

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Ekstrak Daun Matoa (Pometia pinnata) sebagai Inhibitor Korosi Baja Karbon SS-304 Renny Fitria; Dahyunir Dahlan; Syukri Syukri
Jurnal Fisika Unand Vol 13 No 1 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.1.49-53.2024

Abstract

Research has been carried out on inhibitors from matoa leaf extract to inhibit the corrosion rate of SS-304 carbon steel. The Matao leaf extract used as an inhibitor was immersed in a 1 M H2SO4 corrosive medium. To determine the effect of inhibitor concentration and immersion temperature on steel corrosion, various inhibitor concentrations were varied, namely 0%, 1%, 2%, and 3% bt, and temperature variations, namely samples also in XRD and SEM characterization. 35°C and 40°C. The corrosion rate test was carried out using the weight loss method. The increase in the corrosion rate is in line with the increase in sample weight loss. The most efficient inhibitor of matoa leaf extract was obtained at a concentration of 3% with an immersion temperature of 35°C, namely 0.09 mmpy. The XRD results showed that the maximum peaks produced FeC and FeNi crystals, followed by FeO crystals. SEM characterization also showed that samples without inhibitors were more corroded, and samples using 3% inhibitor concentrations were slightly corroded.
Montmorillonit K-10 yang Dimodifikasi Ni2+: Sifat Struktur dan Aktivitas Katalitik Admi Admi; Dewi Khofifatul Khoiriah; Syukri Syukri
Jurnal Fisika Unand Vol 13 No 3 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.3.439-444.2024

Abstract

Fokus studi ini adalah mensintesis material berbasis montmorillonit K-10 yang dimodifikasi dengan spesies Ni2+ melalui metoda hidrotermal. Pengaruh aktivasi termal terhadap support montmorillonit K-10 pada proses pertukaran kation untuk menghasilkan katalis heterogen dikarakterisasi dengan x-raydiffraction (XRD) dan x-ray fluoressence (XRF). Analisis XRF sampel menunjukkan bahwa kemampuan pertukaran kation sampel montmorillonit K-10 terhadap Ni2+ berdampak pada peningkatan kandungan nikel pada semua sampel yang dimodifikasi dibandingkan dengan yang tidak dimodifikasi. Analisis XRD terhadap struktur sampel yang dimodifikasi mengungkapkan bahwa struktur dasar clay 2:1 (T:O:T) tahan selama proses pertukaran kation. Kinerja katalis heterogen yang dihasilkan diuji pada reaksi transesterifikasi minyak jelantah dengan metanol untuk produksi FAME (Fatty Acid Methyl ester) (biodisel). Evaluasi uji katalitik menunjukkan bahwa montmorillonit K-10 yang dimodifikasi Ni2+ memberikan peningkatan % rendemen FAME. Hal ini mengindikasikan bahwa material montmorillonit K-10 yang dimodifikasi  Ni2+sebagai katalis heterogen yang berpotensi untuk produksi biodisel.
Studi Pendahuluan Uji Aktivitas Katalitik Katalis Montmorillonit K-10 Yang Dimodifikasi Cu2+ Admi Admi; Delvi Isnaini; Syukri Syukri
Jurnal Fisika Unand Vol 13 No 6 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.6.820-826.2024

Abstract

The current study examines the catalytic activity of Cu2+-exchanged cation montmorillonite K-10 (MMT K-10) catalyst, which synthesized by hydrothermal method. X-ray fluoressence (XRF) and X-ray Diffraction (XRD) were used for characterizing the newly synthesis catalyst. The effect of thermal activation on the support of MMT K-10 with a modifier Cu investigated on its catalytic performance for conversion waste cooking oil to produce fatty acid methyl ester (FAME) by transesterification reaction. Synthesis biodiesel was further characterized by Gas Chromatography-Mass Spectroscopy (GC-MS). The biodiesel was obtained at transesterification reaction conditions: 3% (w/w) catalyst loading, molar ratio of oil to methanol = 1:10, and 3 h of reaction time at 90°C. The yield of FAME of WCO for MMT K-10, MMT K-10/Cu2+, MMT K-10 (activation 110°C)/Cu2+, MMT K-10 (activation 300°C)/Cu2+ catalysts were the 9,47%; 10,36%; 10,41%; and 12,01% of FAME, respectively. This study exhibites that the activation of thermal on the support MMT K-10 which modified by Cu2+ leads to reduction of the crystal size. The decreasing crystal size contributes on increasing catalytic performance of the heterogeneous catalyst.
Sintesis Karbon Aktif Dari Batang Jagung(Zea mays L.) dengan Metoda Dehidrasi Asam Untuk Aplikasi Elektroda Superkapasitor Olly Norita Tetra; Syukri Syukri; Adlis Santoni; Deswati Deswati; Nabiel Fajarandi; Emriadi Emriadi
Jurnal Fisika Unand Vol 13 No 6 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.6.834-842.2024

Abstract

Activated carbon from corn stalks (Zea mays L.) has been successfully synthesized by the dehydration method and used as a supercapacitor electrode. Corn stalk powder was dehydrated with 1 MH2SO4 and activated with 5 M NaOH at a carbon and activator mass ratio of 1:4 with a heating temperature of 800°C and an N2 gas heating rate of 10°C/minute for 1 hour. SEM characterization results show that heterogeneous pores have formed on the surface of corn stalk-activated carbon. EDX results showed a carbon percentage of 54.82%; this data is supported by FTIR results, which show several functional groups containing C and O atoms on the surface of activated carbon. Based on desorption adsorption isotherm analysis, the activated carbon shows H4 type with a specific surface area of 117.973m2/g, average pore diameter of 1.730 nm and total pore volume of 0.1021 cm3/g. Measurement of the electrochemical properties of corn stalk activated carbon with a three-electrode system and 3 M KOH electrolyte showed a specific capacitance value of 133.9 F/g, power density 225.2 W/kg and energy density 0.863 Wh/kg. The synthesis of activated carbon through the dehydration method offers advantages in terms of simplicity in preparation, low cost, shorter synthesis time and being environmentally friendly.
STRUKTUR DAN SIFAT OPTIK LAPISAN TIPIS TiO2 (TITANIUM OKSIDA) YANG DIHASILKAN DENGAN MENGGUNAKAN METODE ELEKTRODEPOSISI Agustina, Elsa; Dahlan, Dahyunir; -, Syukri
Jurnal Fisika Unand Vol 2 No 3: Juli 2013
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.2.3.%p.2013

Abstract

Telah dilakukan elektrodeposisi lapisan tipis TiO2 di atas substrat ITO (Indium Tin Oxide) dengan menggunakan larutan elektrolit TiCl4 (Titanium (IV) klorida) dan katalis H3BO3 (Boric Acid).  Didapatkan hasil karakterisasi XRD pada lapisan tipis TiO2  yang dideposisi menggunakan 1.5M TiCl4 tanpa menggunakan katalis H3BO3 berada dalam fase anatese sedangkan lapisan tipis TiO2 yang dideposisi menggunakan 1.5M TiCl4 dengan menggunakan katalis H3BO3 berada dalam fase rutile.  Spektrum UV-Vis menunjukkan lapisan tipis TiO2 dalam fase anatase memiliki energi gap sebesar 3,25 eV sedangkan dalam fase rutile memiliki energi gap sebesar 3,7 eV.  Hasil karaktarisasi SEM menunjukkan bahwa elektrodeposisi lapisan tipis TiO2 menghasilkan morfologi permukaan yang lebih halus pada sampel tanpa menggunakan katalis dibandingkan dengan elektrodeposisi sampel yang menggunakan katalis..  Berdasarkan hasil yang diperoleh, maka deposisi lapisan tipis TiO2 ini dapat dijadikan acuan untuk pemanfaatan pada aplikasi sel surya DSSC.
Co-Authors Adlis Santoni Admi Admi Admi Admi Admi Admi Admin Alif Aju Deska Aju Deska Alif, Admin Amelina Dwika Hardi Anggia Arista Ariyetti Ariyetti Bhayu Gita Bhernama Dahyunir Dahlan Delvi Isnaini Deswati Deswati Dewi Khofifatul Khoiriah Ebriyen Zeni Eldya Mossfika Elsa Agustina Elsa Agustina Emriadi - Fadhil Ferdian Fadhilla, Anna Fitria Ramadhani Fitria Ramadhani Florencia Tri Angellika Hazanita Jumiaty Hermansyah Aziz Ida Ayu Putu Sri Widnyani Ilona Bella Kevin Septioga Lestari Ningsih Mai Efdi Mai Efdi Matlal Fajri Alif Muhammad Nasir Muldarisnur, Mulda Nabiel Fajarandi Nengsih, Zarnida Widia Novesar Jamarun Olly Norita Tetra Rahadian Zainul Rahayu Rahayu Rahma Joni Rahma Joni Renny Fitria Riri Trinanda Rycce Sylviana Pratikha Rycce Sylviana Pratikha Safni Safni Solly Aryza Sry Wahyuni Sylvina Tebriani Syukri Arief Trisna Olinovela Upita Septiani Vivi Sisca Yetria Rilda Yulia Eka Putri Zilfa Zilfa