双功能
电催化剂
催化作用
析氧
化学
组合化学
电化学
热解
双功能催化剂
旋转圆盘电极
背景(考古学)
化学工程
纳米技术
材料科学
电极
有机化学
物理化学
工程类
循环伏安法
古生物学
生物
作者
Nguyen Duc Viet,Ravi Nivetha,Nam Le,Jin Suk Chung,Won Mook Choi,Seung Hyun Hur
出处
期刊:ACS applied nano materials
[American Chemical Society]
日期:2024-01-08
卷期号:7 (2): 1815-1824
标识
DOI:10.1021/acsanm.3c05011
摘要
Recently, the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) have received great attention for the development of renewable energy and energy storage systems. In the context of catalyst standpoint, developing single-atom catalysts (SACs) with bifunctional electrocatalytic reactions (ORR/OER) has emerged as a fascinating research field in recent years. However, a majority of SACs that have been reported have a complicated synthesis route that involves many steps and harmful solvents and suffer from aggregation phenomena, which makes them unsustainable for industrial use. Herein, a bifunctional C-Atz-20 electrocatalyst was fabricated by inserting a secondary organic linker, 3-amino-1,2,4-triazole (Atz), into Fe-ZIF followed by high-temperature pyrolysis and its ORR/OER elucidated. To fully comprehend the function of Atz addition, the nanostructured materials underwent an extensive characteristic analysis. The results showed that the C-Atz-20 exhibited better long-term ORR and OER stability tests when compared with Pt/C and RuO2, respectively. Interestingly, the high ORR activity of C-Atz-20 originally contributed to the presence of a large fraction of pyridinic and graphitic N. Rotating ring-disk electrode (RRDE) measurement illustrates the ORR mechanism in the catalytic process, giving a better understanding of electron transport, thus paving the way for the design and development of heterogeneous catalysts with simple preparation and operating procedures.
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