Efficient and stable CO2 to formate conversion enabled by edge-site-enriched SnS2 nanoplates

IF 20.2 1区化学 Q1 CHEMISTRY, PHYSICAL

Applied Catalysis B: Environmental Pub Date : 2023-09-09 DOI:10.1016/j.apcatb.2023.123274

Zhipeng Liu , Chang Liu , Jiawei Zhang , Suhua Mao , Xiao Liang , Hanlin Hu , Xiaoxi Huang

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引用次数: 1

Abstract

Layered materials have been investigated in many different catalytic reactions due to their excellent functionalities. In particular, understanding the anisotropic properties of layered materials is important for the design of more efficient catalysts. Herein, SnS₂ nanoflakes with abundant edge sites (E-SnS₂) were synthesized and their catalytic properties towards the electrochemical CO₂ reduction reaction (CO₂RR) were studied. Combining experimental data and computational analysis, we found that the edge sites of SnS₂ are more active for CO₂ to formate conversion compared with the basal sites. Moreover, a CO₂ reduction intermediates triggered activation mechanism at the edge sites is proposed, the formation of sulfur vacancies at the edges would generate more active sites for CO₂RR. The as-synthesized E-SnS₂ shows high selectivity, activity and robust stability for at least 12 h in a flow cell under a current density of − 200 mA·cm^-2. This work may provide a new perspective on rational catalyst design for CO₂RR.

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富边位SnS2纳米板实现了高效稳定的CO2到甲酸的转化

层状材料由于其优异的功能，在许多不同的催化反应中得到了研究。特别是，了解层状材料的各向异性对于设计更高效的催化剂非常重要。本文合成了具有丰富边缘位的SnS2纳米片(E-SnS2)，并研究了其对CO2电化学还原反应(CO2RR)的催化性能。结合实验数据和计算分析，我们发现SnS2的边缘位点比基础位点对CO2生成转化更活跃。此外，还提出了CO2还原中间体在边缘位置触发活化的机制，在边缘位置形成硫空位会产生更多的CO2RR活性位点。在−200 mA·cm-2的电流密度下，合成的E-SnS2具有较高的选择性、活性和至少12 h的稳定性。本研究为CO2RR催化剂的合理设计提供了新的思路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Catalysis B: Environmental 环境科学-工程：化工

CiteScore

38.60

自引率

6.30%

发文量

1117

审稿时长

24 days

期刊介绍： Applied Catalysis B: Environment and Energy (formerly Applied Catalysis B: Environmental) is a journal that focuses on the transition towards cleaner and more sustainable energy sources. The journal's publications cover a wide range of topics, including: 1.Catalytic elimination of environmental pollutants such as nitrogen oxides, carbon monoxide, sulfur compounds, chlorinated and other organic compounds, and soot emitted from stationary or mobile sources. 2.Basic understanding of catalysts used in environmental pollution abatement, particularly in industrial processes. 3.All aspects of preparation, characterization, activation, deactivation, and regeneration of novel and commercially applicable environmental catalysts. 4.New catalytic routes and processes for the production of clean energy, such as hydrogen generation via catalytic fuel processing, and new catalysts and electrocatalysts for fuel cells. 5.Catalytic reactions that convert wastes into useful products. 6.Clean manufacturing techniques that replace toxic chemicals with environmentally friendly catalysts. 7.Scientific aspects of photocatalytic processes and a basic understanding of photocatalysts as applied to environmental problems. 8.New catalytic combustion technologies and catalysts. 9.New catalytic non-enzymatic transformations of biomass components. The journal is abstracted and indexed in API Abstracts, Research Alert, Chemical Abstracts, Web of Science, Theoretical Chemical Engineering Abstracts, Engineering, Technology & Applied Sciences, and others.