A novel CdWO4/BiOBr p–n heterojunction as visible light photocatalyst

A novel heterojunction photocatalyst CdWO4/BiOBr was fabricated combining nano-rod CdWO4 with flake-like BiOBr through a hydrothermal and subsequently chemical precipitation method. The samples were characterized by transmission electron microscopy (TEM), high-resolution transmission electron micros...

Full description

Saved in:
Bibliographic Details
Published in:Journal of alloys and compounds 2016-06, Vol.670, p.12-17
Main Authors: Cao, Qian Wen, Cui, Xia, Zheng, Yi Fan, Song, Xu Chun
Format: Article
Language:English
Subjects:
BiOBr
CdWO4
Heterojunction
Photocatalytic
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A novel heterojunction photocatalyst CdWO4/BiOBr was fabricated combining nano-rod CdWO4 with flake-like BiOBr through a hydrothermal and subsequently chemical precipitation method. The samples were characterized by transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), Energy dispersive X-ray detector (EDS), X-ray diffraction (XRD) and UV–vis spectrophotometer. Moreover the photocatalytic activities were evaluated by decomposing dye molecule RhB under visible light irradiation. The results showed that high photocatalytic performance can be achieved on the heterojunction photocatalysts with the 15% CdWO4/BiOBr composite displaying highest activity. The results of the study concluded that it was the introduction of BiOBr into the catalyst that mainly enhanced the activity of the photocatalyst by promoting the separation of electron–hole group on the interface of BiOBr and CdWO4. [Display omitted] •The CdWO4/BiOBr p–n heterojunction was prepared through a hydrothermal and chemical precipitation method.•The 15% CdWO4/BiOBr composite exhibited the highest photocatalytic activity for the decomposition of RhB.•The reasons of the enhanced photocatalytic activity of CdWO4/BiOBr heterojunction were discussed.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2016.02.061