Construction of a Bioinspired Hierarchical BiVO4/BiOCl Heterojunction and Its Enhanced Photocatalytic Activity for Phenol Degradation

被引：89

作者：

Su, Qian ^{[1
]}

Zhu, Lulu ^{[1
]}

Zhang, Mingrui ^{[1
]}

Li, Yao ^{[1
,3
]}

Liu, Siyuan ^{[1
]}

Lin, Jingyi ^{[1
]}

Song, Fang ^{[1
]}

Zhang, Wang ^{[1
]}

Zhu, Shenmin ^{[1
,2
]}

Pan, Jian ^{[4
]}

机构：

[1] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China

[2] Wuhan Inst Technol, Hubei Key Lab Plasma Chem & Adv Mat, Wuhan 430205, Peoples R China

[3] MIT, Dept Nucl Sci & Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[4] Univ New South Wales, Sch Chem Engn, Sydney, NSW 2052, Australia

来源：

ACS APPLIED MATERIALS & INTERFACES | 2021年 / 13卷 / 28期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

BiVO4/BiOCl; p-n heterojunction; biotemplate; hierarchical structure; photocatalytic phenol degradation; P-N HETEROJUNCTION; CORE-SHELL STRUCTURE; Z-SCHEME; BIVO4; BIOCL; FABRICATION; EFFICIENT; HETEROSTRUCTURES; MICROSPHERES; SEPARATION;

D O I：

10.1021/acsami.1c05117

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Development of a p-n heterojunction to achieve efficient degradation of organic pollutants is a promising approach in the field of photocatalysis. Herein, BiVO4 with bioinspired hierarchical structures was prepared with the sol-gel method and combined with BiOCl nanoplates to construct a 3D/2D configuration via an in situ deposition route. The hierarchical BiVO4 served as an excellent substrate to achieve the uniform loading of BiOCl nanoplates. The obtained 3D/2D BiVO4/BiOCl hybrids exhibited significantly enhanced photocatalytic efficiency for degrading phenol under visible light irradiation, with a first-order reaction rate constant that was 9.9 and 1.9 times higher than those of hierarchical BiVO4 and the BiVO4/BiOCl hybrids without hierarchical structures, respectively. Moreover, the hierarchical BiVO4/BiOCl also displayed good photochemical stability for the degradation of phenol after three recycles. The p-n heterojunction and hierarchical structure worked together to form a spatial conductive network framework, which possessed improved visible light absorption, high specific surface area, as well as effective separation and transfer of photogenerated charge carriers.

引用

页码：32906 / 32915

页数：10

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