Volume 6, Issue 7 2200187
Research Article

Ni Foam Supported TiO2 Nanorod Arrays with CdS Branches: Type II and Z-Scheme Mechanisms Coexisted Monolithic Catalyst Film for Improved Photocatalytic H2 Production

Mingli Li

Mingli Li

Key Laboratory for Biobased Materials and Energy of Ministry of Education, Guangdong Laboratory for Lingnan Modern Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642 China

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Meng Wei

Meng Wei

Key Laboratory for Biobased Materials and Energy of Ministry of Education, Guangdong Laboratory for Lingnan Modern Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642 China

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Xiaoer Xie

Xiaoer Xie

Key Laboratory for Biobased Materials and Energy of Ministry of Education, Guangdong Laboratory for Lingnan Modern Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642 China

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Qianwen Dong

Qianwen Dong

Key Laboratory for Biobased Materials and Energy of Ministry of Education, Guangdong Laboratory for Lingnan Modern Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642 China

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Qiongzhi Gao

Qiongzhi Gao

Key Laboratory for Biobased Materials and Energy of Ministry of Education, Guangdong Laboratory for Lingnan Modern Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642 China

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Xin Cai

Xin Cai

Key Laboratory for Biobased Materials and Energy of Ministry of Education, Guangdong Laboratory for Lingnan Modern Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642 China

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Shengsen Zhang

Shengsen Zhang

Key Laboratory for Biobased Materials and Energy of Ministry of Education, Guangdong Laboratory for Lingnan Modern Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642 China

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Feng Peng

Corresponding Author

Feng Peng

School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 51006 China

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Yueping Fang

Corresponding Author

Yueping Fang

Key Laboratory for Biobased Materials and Energy of Ministry of Education, Guangdong Laboratory for Lingnan Modern Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642 China

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Siyuan Yang

Corresponding Author

Siyuan Yang

Key Laboratory for Biobased Materials and Energy of Ministry of Education, Guangdong Laboratory for Lingnan Modern Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642 China

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First published: 29 March 2022
Citations: 9

Abstract

TiO2 has garnered a flourish of interest in the field of energy storage and energy conversion. Herein, a new generation of 3D Ni foam supported in situ grown 1D TiO2 nanoarray (Ni/TiO2) is successfully prepared, through an easy solution-phase hydrothermal process, and then CdS nanorods branched Ni/TiO2 nanoarrays are fabricated (Ni/TiO2@CdS). Their formation parameters and growth mechanism are carefully studied. Both Ni/TiO2 and Ni/TiO2@CdS monolithic catalysts exhibit advantaged photocatalytic (PC) and photoelectrocatalytic (PEC) water splitting properties compared with that of most previously reported TiO2-based film photocatalysts. Mechanism investigation reveals that both type II and Z-scheme charge transport mechanisms coexist in Ni/TiO2@CdS sample, and an additional Z-scheme charge transfer effect accelerates the photogenerated charge separation and transport efficiency. This study may open a new avenue for the utilization of TiO2-based film catalysts in a broader field of energy and environmental catalysis areas.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.

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