Balancing the electronic structure and surface reconstruction of Cu-based nanostructures for iodide oxidation reactions

Hainan Sun; Zhicheng Wei; Liangshuang Fei; Zhiwei Wei; Zhongxiang Zhang; Mujia Sun; Jiaqiao Yang; Junxiong Zhang; Jiapeng Liu; Zongping Shao

doi:10.1039/D5CC02121A

Balancing the electronic structure and surface reconstruction of Cu-based nanostructures for iodide oxidation reactions†

Hainan Sun,

*^a Zhicheng Wei,^a Liangshuang Fei,^b Zhiwei Wei,^a Zhongxiang Zhang,^a Mujia Sun,^a Jiaqiao Yang,^a Junxiong Zhang,^c Jiapeng Liu

*^d and Zongping Shao

*^e

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* Corresponding authors

^a School of Chemistry and Chemical Engineering, Nantong University, Nantong, China
E-mail: hainansun123919@ntu.edu.cn

^b State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, China

^c School of Textile and Clothing, Nantong University, Nantong, China

^d School of Advanced Energy, Sun Yat-Sen University, Shenzhen, China
E-mail: liujp59@mail.sysu.edu.cn

^e WA School of Mines: Minerals Energy and Chemical Engineering (WASM-MECE), Curtin University, Perth, Western Australia 6102, Australia
E-mail: zongping.shao@curtin.edu.au

Abstract

A CuO nanorod array grown on Cu foam (CuO NA/CF) was synthesized via an in situ etching and oxidation process, enabling both electronic modulation and morphological engineering. The CuO NA/CF catalyst demonstrates excellent iodide oxidation reaction activity, requiring only 1.36 V to achieve a current density of 50 mA cm⁻², along with remarkable operational stability. In situ Raman spectroscopy reveals that CuO remains stable in alkaline solutions and serves as the most active phase compared to metallic Cu and Cu₂O, which was further supported by theoretical calculations.

This article is part of the themed collection: Chemistry at the Forefront of the Sustainable Energy Transition

Chemical Communications

Balancing the electronic structure and surface reconstruction of Cu-based nanostructures for iodide oxidation reactions†

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Balancing the electronic structure and surface reconstruction of Cu-based nanostructures for iodide oxidation reactions

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