首页|Microwave shock motivating the Sr substitution of 2D porous GdFeO3 perovskite for highly active oxygen evolution

Microwave shock motivating the Sr substitution of 2D porous GdFeO3 perovskite for highly active oxygen evolution

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The incorporation of partial A-site substitution in perovskite oxides represents a promising strategy for precisely controlling the electronic configuration and enhancing its intrinsic catalytic activity.Conventional methods for A-site substitution typically involve prolonged high-temperature processes.While these processes promote the development of unique nanostructures with highly exposed active sites,they often result in the uncontrolled configuration of introduced elements.Herein,we present a novel approach for synthesizing two-dimensional(2D)porous GdFeO3 perovskite with A-site strontium(Sr)substitution utilizing microwave shock method.This technique enables precise control of the Sr con-tent and simultaneous construction of 2D porous structures in one step,capitalizing on the advantages of rapid heating and cooling(temperature～1100 K,rate～70 K s-1).The active sites of this oxygen-rich defect structure can be clearly revealed through the simulation of the electronic configuration and the comprehensive analysis of the crystal structure.For electrocatalytic oxygen evolution reaction applica-tion,the synthesized 2D porous Gd0.8Sr0.2FeO3 electrocatalyst exhibits an exceptional overpotential of 294 mV at a current density of 10 mA cm-2 and a small Tafel slope of 55.85 mV dec-1 in alkaline elec-trolytes.This study offers a fresh perspective on designing crystal configurations and the construction of nanostructures in perovskite.

2D materialsPerovskiteMicrowaveElectrocatalysisOxygen evolution reaction

Jinglin Xian、Huiyu Jiang、Zhiao Wu、Huimin Yu、Kaisi Liu、Miao Fan、Rong Hu、Guangyu Fang、Liyun Wei、Jingyan Cai、Weilin Xu、Huanyu Jin、Jun Wan

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State Key Laboratory of New Textile Materials and Advanced Processing Technologies,Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing,Wuhan Textile University,Wuhan 430200,Hubei,China

Future Industries Institute,STEM,University of South Australia,Adelaide,SA 5095,Australia

Institute for Sustainability,Energy and Resources,The University of Adelaide,Adelaide,SA 5005,Australia

National Natural Science Foundation of ChinaOpen Fund of State Key Laboratory of New Textile Materials and Advanced Processing TechnologiesOpen Fund of Hubei Key Laboratory of Biomass Fiber and Ecological Dyeing and FinishingChina Scholarship Council(CSC)Visiting Scholar ProgramInstitute for Sustainability,Energy and Resources,The University of Adelaide,Future Making Fellowship,Australia

52203070FZ2022005STRZ202203

2024

10.1016/j.jechem.2023.09.016

能源化学
中国科学院大连化学物理研究所 中国科学院成都有机化学研究所

能源化学

CSTPCDEI
影响因子：0.654
ISSN：2095-4956
年,卷(期)：2024.88(1)
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