利用 S 型光催化剂合理构建用于高选择性 CO2 到 CO 转化的 CuO/CdS

IF 3.6 4区工程技术 Q3 ENERGY & FUELS

Energy technology Pub Date : 2024-07-25 DOI:10.1002/ente.202401137

Chenlong Yan, Mengyang Xu, Jinze Li, Bingqing Chang, Qidi Chen, Wangye Cao, Wei Xiao, Huiqin Wang, Pengwei Huo

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引用次数: 0

摘要

S 型异质结的构建已广泛应用于二氧化碳的光催化还原，其界面电荷转移分离起着重要作用。本文采用简单的水浴法设计并制备了一种 S 型 CuO/CdS 异质结。通过在 CuO 片层结构上原位生长 CdS 粒子，这种复合结构提供了大量的活性位点，提高了 CO2 的吸收率，从而获得了具有优异光催化活性的催化剂。优化样品的 CO 产率可达 152.16 μmol g-1 h-1，分别是 CuO 和 CdS 的 7 倍和 10 倍。此外，还利用电子自旋共振、紫外光电子能谱和原位 X 射线光电子能谱研究了可能的电荷转移机制，本研究可为 S 型异质结催化剂的设计提供有效的启示。

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Rational Construction of CuO/CdS for Highly Selective CO2 to CO Conversion with S‐Scheme Photocatalysts

The construction of S‐scheme heterojunctions has been widely used in photocatalytic reduction of CO2, and their interfacial charge transfer separation plays an important role. Herein, an S‐scheme CuO/CdS heterojunction has been designed and fabricated by a simple water bath method. Its excellent photocatalytic activity is achieved by the in situ growth of CdS particles on a CuO lamellar structure, a composite structure that provides a large number of active sites and improves CO2 absorption, resulting in a catalyst with excellent photocatalytic activity. The CO yield of the optimized sample can reach 152.16 μmol g−1 h−1, which is 7 and 10 times higher than that of CuO and CdS, respectively. In addition, electron spin resonance, UV photoelectron spectroscopy, and in situ X‐ray photoelectron spectroscopy are used to investigate the possible charge transfer mechanism, and the present study may provide effective insights into the design of S‐scheme heterojunction catalysts.

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来源期刊

Energy technology ENERGY & FUELS-

CiteScore

7.00

自引率

5.30%

发文量

审稿时长

1.3 months

期刊介绍： Energy Technology provides a forum for researchers and engineers from all relevant disciplines concerned with the generation, conversion, storage, and distribution of energy. This new journal shall publish articles covering all technical aspects of energy process engineering from different perspectives, e.g., new concepts of energy generation and conversion; design, operation, control, and optimization of processes for energy generation (e.g., carbon capture) and conversion of energy carriers; improvement of existing processes; combination of single components to systems for energy generation; design of systems for energy storage; production processes of fuels, e.g., hydrogen, electricity, petroleum, biobased fuels; concepts and design of devices for energy distribution.