Cu-doped CdZnS nanocrystals: a leap forward in selective photocatalytic CO2 reduction to methane†

IF 5.4 3区材料科学 Q2 CHEMISTRY, PHYSICAL

ACS Applied Energy Materials Pub Date : 2024-10-02 DOI:10.1039/d4cc04244a

Jiwei Li , Ze Luo , Tianqing Zhou , Haibo Huang , Xilin She , Hua Tang

引用次数: 0

Abstract

Our research has demonstrated a significant correlation between the Cu doping concentration in CdZnS and its photocatalytic performance, with CZS-2 exhibiting a 15-fold increase in methane (CH₄) production rate compared to pristine CZS, reaching a peak value of 519.2 μL g⁻¹ h⁻¹. Moreover, CZS-2 demonstrates an unprecedented CH₄ selectivity of 85.3%, surpassing previously reported values for analogous systems. In-depth electrochemical analysis reveals that Cu doping strategically modifies the electronic structure of CZS-x, facilitating efficient charge separation and transfer. This optimization minimizes charge recombination, leading to the selective promotion of CO₂ reduction to CH₄.

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掺铜 CdZnS 纳米晶体：选择性光催化二氧化碳还原成甲烷的飞跃性进展

我们的研究表明，CdZnS 中的铜掺杂浓度与其光催化性能之间存在显著的相关性，与原始 CZS 相比，CZCS-2 的甲烷（CH4）生产率提高了 15 倍，达到了 519.2 μL/g/h 的峰值。此外，CZCS-2 还显示出前所未有的 85.3% 的 CH4 选择性，超过了之前报道的类似系统的值。深入的电化学分析表明，铜掺杂策略性地改变了 CZCS-x 的电子结构，促进了高效的电荷分离和转移。这种优化最大程度地减少了电荷重组，从而有选择性地促进 CO2 还原成 CH4。

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

ACS Applied Energy Materials Materials Science-Materials Chemistry

CiteScore

10.30

自引率

6.20%

发文量

1368

期刊介绍： ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.