Morphology- and size-dependent FAPbBr3/WO3 Z-scheme photocatalysts for the controllable photo-oxidation of benzyl alcohol

Weizhe Wang; Haowei Huang; Xi Ke; Xiao Liu; Shuhui Yang; Kunqiang Wang; Le Huang; Chen Tu; Zhaoqiang Zheng; Dongxiang Luo; Menglong Zhang

Materials & Design (Mar 2022)

Morphology- and size-dependent FAPbBr3/WO3 Z-scheme photocatalysts for the controllable photo-oxidation of benzyl alcohol

Weizhe Wang,
Haowei Huang,
Xi Ke,
Xiao Liu,
Shuhui Yang,
Kunqiang Wang,
Le Huang,
Chen Tu,
Zhaoqiang Zheng,
Dongxiang Luo,
Menglong Zhang

Affiliations

Weizhe Wang: Institute of Semiconductors, South China Normal University, 510631, PR China
Haowei Huang: cMACS, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
Xi Ke: Institute of Semiconductors, South China Normal University, 510631, PR China
Xiao Liu: Institute of Semiconductors, South China Normal University, 510631, PR China; Corresponding authors.
Shuhui Yang: Institute of Semiconductors, South China Normal University, 510631, PR China
Kunqiang Wang: Institute of Semiconductors, South China Normal University, 510631, PR China
Le Huang: School of Materials and Energy, Guangdong University of Technology, 510006, PR China
Chen Tu: School of Chemistry, Faculty of Science, Chemistry Building F11, Camperdown 2050, University of Sydney, NSW 2006, Australia
Zhaoqiang Zheng: School of Materials and Energy, Guangdong University of Technology, 510006, PR China
Dongxiang Luo: Institute of Semiconductors, South China Normal University, 510631, PR China; School of Chemistry and Chemical Engineering, Guangzhou University, 510006, China; Corresponding authors.
Menglong Zhang: Institute of Semiconductors, South China Normal University, 510631, PR China; Corresponding authors.

Journal volume & issue: Vol. 215
p. 110502

Abstract

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Photocatalytic benzyl alcohol (BA) oxidation to value-added chemicals by semiconductors has attracted massive attentions due to its industrial interest. In this work, Z-scheme heterojunction photocatalysts composed of FAPbBr3 nanocrystals (NCs) and WO3 with different morphologies are prepared. Benefiting from the strong redox potential and morphological engineering, the Z-scheme heterojunction photocatalyst exhibits an outstanding performance of BA oxidation to benzaldehyde (BD) with 99% selectively. Remarkably, after manipulating the size of FAPbBr3 NCs to quantum dots (QDs), benzoic acid (BZ) as the main product (90% selectivity) of BA oxidation can be generated on the Z-scheme photocatalyst. As revealed by in-situ electronic paramagnetic resonance (EPR), a new radical will be generated over the FAPbBr3 QDs/WO3 which alters the product of benzyl alcohol oxidation form BD to BZ.

Published in Materials & Design

ISSN: 0264-1275 (Print); 1873-4197 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.journals.elsevier.com/materials-and-design

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