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Ida Bagus Putu Mardana
Universitas Pendidikan Ganesha
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Journal : Journal of Comprehensive Science

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Sulfidation of Iron - Based Nanomaterial as Catalyst for Water Splitting Using Hydrothermal Lestari, Ni Luh Ayu Ardi; Arjana, I Gede; Mardana, Ida Bagus Putu
Journal of Comprehensive Science Vol. 3 No. 5 (2024): Journal of Comprehensive Science (JCS)
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/jcs.v3i5.728

Abstract

Consumption of fossil fuels causes greenhouse effect and global warming, hence the need for renewable energy sources that are environmentally friendly. Hydrogen is one of the abundant elements on earth. Hydrogen refers to a clean and renewable energy source, hydrogen can be a good choice to reduce greenhouse gas emissions. One way to produce hydrogen is by electrochemical water splitting. This study aims to determine the characterization of iron-based nanomaterials (iron sulfide - iron hydroxide) as a water splitting catalyst in general. Iron sulfide synthesis was carried out using hydrothermal sulfidation method for 6 hours at 80 oC with nickel foam as substrate. Synthesis of iron sulfide varying the concentration of sodium sulfide nonahydrate (0.0125 M, 0.025 M, 0.05 M and 0.1 M) produced brownish yellow to blackish grey colored samples. Characterization results using XRD showed that iron sulfide peaks were detected at higher concentrations of sodium sulfide nonahydrate. Based on the results of analyzing iron hydroxide using SEM, it is known that the sample is in the form of nano walls and on iron sulfide, it is known that the sample is in the form of nanoscale particles. Based on electrochemical measurement results, iron hydroxide can be a good catalyst for hydrogen evolution reaction (HER) compared with commercial Pt/C. The overpotential of iron hydroxide is smaller than Pt/C, which is only 15 mV at a current density 10 mA/cm2 and iron sulfide can be a good catalyst for oxygen evolution reaction (OER) with electrocatalytic measurement results close to commercial RuO2. This is indicated by the small overpotential (260 mV at current densisty 10 mA/cm2 and small tafel slope (51 mV/dec).
Co-Authors ., Gusti Ayu Putu Bakti Mahayuni ., Kadek Ayu Meilani Wulandari ., Luh Ari Dwi Jayanti ., Luh Putu Santiaji ., Ni Kadek Aridani Basunari ., Ni Kadek Rahayu ., Ni Luh Heny Agustyari ., Ni Pt Sricandra Dewi ., Ni Putu Yuvik Sulistya Dewi ., Putu Kirania Andhika Putri A. A. Istri Agung Rai Sudiatmika Ade Sintia Wulandari Agung Widiantara, Gusti Kade Agung, Gusti Kade Agung Widiantara Agus Adiarta,ST,MT . Amerta, Gede Arya Ari Winata, I Wayan Artanayasa, Wayan Artha, I Komang Restu Widi Astika, I W. M Chrisinta, Debora Dewi Oktofa Rachmawati Dr. I Made Sugiarta, M.Si. . Drs. I Made Wirta, M.Pd . Erlina, Nia Gusti Ayu Putu Bakti Mahayuni . I Gede Arjana I Gede Dana Santika . I Gede Dana Santika ., I Gede Dana Santika I Gede Satya Widura . I Komang Januariyasa . I Komang Januariyasa ., I Komang Januariyasa I Komang Nudina I Made Dwi Juliarta Putra . I Nengah Karang Giarta . I Nengah Karang Giarta ., I Nengah Karang Giarta I Nyoman Putu Suwindra I Nyoman Suardana I Putu Wina Yasa Pramadi I W. M Astika I Wayan Ari Winata I Wayan Sadia I Wayan Suastra Ida Bagus Putu Arnyana Kadek Ayu Meilani Wulandari . Kadek Hary Mahardika . Kadek Hary Mahardika ., Kadek Hary Mahardika Ketut Suma Komang Gede Yudi Arsana . Lestari, Ni Luh Ayu Ardi Liani, Kadek Delita Luh Ari Dwi Jayanti . Luh Putu Santiaji . M.Pd Drs. I Made Wirta . Melkisedik Bukifan Ni Kadek Aridani Basunari . Ni Kadek Rahayu . Ni Luh Heny Agustyari . Ni Pt Sricandra Dewi . Ni Putu Yuvik Sulistya Dewi . Ni Wayan Sukerti Nur Lutfiyah, Yoni Peter Gelu, Leonard Prof. Dr. I Wayan Santyasa,M.Si . Putu Artawan Putu Dian Pratiwi . Putu Kirania Andhika Putri . Putu Widiarini Putu Yasa Putu Yasa Putu Yasa Simarmata, Justin Eduardo Suyoga Wiguna, Anak Agung Gde yoni nur lutfiyah