介孔钙钛矿/g-C3N4的制备及氧还原性能研究

Preparation and oxygen reduction performance of mesoporous perovskite/g-C3N4

闫蕊 ¹柳艺东 ¹张泽 ¹江康伟 ¹牛李琦 ¹刘超¹

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作者信息

1. 太原工业学院材料工程系,太原 030008
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摘要

采用溶胶凝胶-硬模板法制备介孔钙钛矿(LFO)前驱体,采用高温固相反应法制备g-C3N4,并采用冷凝回流法将LFO与不同比例的g-C3N4进行复合.通过X射线衍射、比表面积分析、扫描电子显微镜、循环伏安、线性扫描等方式对复合材料结构和性能进行表征测试.结果表明,LaFeO3-70％g-C3N4(LFO-70％)氧还原电位为0.75V,半波电位为0.65V,初始电位为0.8V,具有最优异的氧还原催化性能.

Abstract

In this paper,the sol gel-hard template method was used to prepare mesoporous perovskite(LFO)precursor,and high-temperature solid phase reaction was used to prepare g-C3N4.LFO and g-C3N4 were then combined in different proportions.The structure and properties of the composites were characterized and tested by XRD,BET,SEM,CV,LSV and EIS.The results showed that LaFeO3-70％g-C3N4(LFO-70％)had an oxygen reduction potential of 0.75 V,a half wave potential of 0.65V,and an initial potential of 0.8V,exhibiting the most excellent catalytic activity for oxygen reduction.

关键词

溶胶凝胶-硬模板法/介孔钙钛矿/氧还原

Key words

sol gel-hard template method/mesopores perovskite/oxygen reduction

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出版年

2025

化工新型材料

中国化工信息中心

化工新型材料

CSCD北大核心

影响因子：0.357

ISSN：1006-3536

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