| Nanosphere-like ZnIn2S4 intercalated g-C3N4 for improved green oxygen production |
Razan A. Alshgari1, Ome Parkash Kumar2, Jafar Hussain Shah3, Saikh Mohammad1, Abdul Ghafoor Abid4
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1Department of Chemistry, College of Science, King Saud University, 11451, Riyadh, Saudi Arabia
2Institute of Chemistry, The Islamia University of Bahawalpur, Baghdad Campus, Bahawalpur, 63100, Pakistan
3Center for Advanced Mössbauer Spectroscopy, Mössbauer Effect Data Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, Liaoning, China
4Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, 60800, Pakistan |
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Received: January 4, 2024; Revised: April 16, 2024 Accepted: May 25, 2024. Published online: June 11, 2024. |
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| ABSTRACT |
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Water splitting could provide the fuel of the future due to its natural availability, outstanding energy efficiency, and cleanliness. Recently, the focus has been diverted towards the fabrication of non-precious electrocatalysts for water splitting. Here, we effectively synthesized a porous anode material integrating ZnIn2S4 nanospheres into a graphitic nitride (GCN) layer by a hydrothermal method followed by a stainless steel strip (SSS). The fabricated materials were explored oxygen evolution reaction (OER) application. The combination of ZnIn2S4/GCN tuned the lattice and provided more active sites than pristine materials. The Tafel slope of 45 mV dec-1 and overpotential of 194 mV (at 10 mA cm-2) was much smaller than bare ZnIn2S4 and GCN. The optimal catalyst performs well for 100 h and also for 1000 cyclic voltammetry (CV) cycles at a given current density in a 1.0 M KOH solution. This work provides a new strategy for the fabrication of low-cost ZnIn2S4/GCN for OER. |
| Key words:
ZnIn2S4/GCN · Graphitic nitride · Oxygen evolution · Water splitting |
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