Open AccessIn2O3 microspheres decorated with ZnIn2S4 nanosheets as core-shell hybrids for boosting visible-light photodegradation of organic dyes
Author(s) -
Ping Li,
Tingting Liang,
Huan Liu,
Jingzhe Li,
Shuwang Duo,
Xun Xu,
Lingfang Qiu,
Xiaoqing Wen,
Raoyuan Shi
Publication year - 2021
Publication title -
materials research express
Language(s) - English
Resource type - Journals
ISSN - 2053-1591
DOI - 10.1088/2053-1591/abe2e2
Subject(s) - photodegradation , materials science , photocatalysis , visible spectrum , nanosheet , analytical chemistry (journal) , nanotechnology , chemistry , optoelectronics , catalysis , organic chemistry
In this work, we firstly report the development of ZnIn 2 S 4 nanosheets decorating In 2 O 3 microspheres with core–shell structure by an in situ synthetic process, which is proved to be an effective method to construct promising semiconductor photocatalysts for photodegradation of methyl blue (MB) under visible-light conditions. Under visible-light illumination, the 2D/3D ZnIn 2 S 4 nanosheet/In 2 O 3 microsphere hybrids exhibit excellent enhancing photoactivity than that of pristine In 2 O 3 , The effect of ZnIn 2 S 4 substitution on photoactivity was also investigated for comparative experiments and it was found that the optimized ZnIn 2 S 4 /In 2 O 3 -1:1 hybrid exhibits the highest photoactivity of 84.5%. The experimental results indicated that the reputably photocatalytic performance of ZnIn 2 S 4 /In 2 O 3 can be attributed to the synergistic effect of efficient separation of photo-generated electron-hole pairs, extended visible-light response range, and the improved specific surface area. Furthermore, the roles of · O 2 − , ·OH, and h + during the photodegradation process were studied to deduce the possible degradation mechanism. This work provides an effective strategy to construct the In 2 O 3 -based photocatalytic systems for efficient photodegradation of organic pollutants, which would be significant for the design of more In 2 O 3 -based systems for promising photocatalytic applications.