Three-dimension hierarchical heterostructure of CdWO4 microrods decorated with Bi2WO6 nanoplates for high-selectivity photocatalytic benzene hydroxylation to phenol

被引：99
作者：
Chen, Peng [1 ]
Chen, Lang [1 ]
Zeng, Yu [1 ]
Ding, Feng [1 ]
Jiang, Xu [1 ]
Liu, Na [1 ]
Au, Chak-Tong [2 ]
Yin, Shuang-Feng [1 ]
机构：
[1] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Prov Hunan Key Lab Cost Effect Utilizat Fossil Fu, Changsha 410082, Hunan, Peoples R China
[2] Hunan Inst Engn, Coll Chem & Chem Engn, Xiangtan 411104, Hunan, Peoples R China
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2018年 / 234卷
关键词：
Hierarchical heterostructure; Photocatalysis; Selective hydroxylation; Phenol; Bi2WO6/CdWO4; VISIBLE-LIGHT PHOTOCATALYST; C-H BONDS; CONTROLLABLE SYNTHESIS; BAND GAP; OXIDATION; EFFICIENT; DEGRADATION; COMPOSITES; CONVERSION; HOLLOW;
D O I：
10.1016/j.apcatb.2018.04.028
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
For the first time Bi2WO6/CdWO4 (BCW) hierarchical heterostructure of CdWO4 microrods decorated with uniform Bi2WO6 nanoplates was prepared. Using BCW as photocatalyst and O-2 as oxidant, we achieved satisfactory catalytic activity (benzene conversion 7.3% and selectivity of phenol > 99%) in the hydroxylation of benzene to phenol at room temperature. It was found that the unique hierarchical heterostructure is beneficial for the absorption of visible light and the separation of photoinduced charge carriers. Moreover, we confirm the pivotal role of hydroxyl radicals and propose a plausible mechanism for the hydroxylation reaction.
引用
收藏
页码：311 / 317
页数：7
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