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MoS 2 Quantum Dots Modified Black Ti 3+ –TiO 2 /g‐C 3 N 4 Hollow Nanosphere Heterojunction toward Photocatalytic Hydrogen Production Enhancement
Author(s) -
Pan Jiaqi,
Dong Zongjun,
Jiang Ziyuan,
Zhao Chuang,
Wang Beibei,
Zhao Weijie,
Wang Jingjing,
Song Changsheng,
Zheng Yingying,
Li Chaorong
Publication year - 2019
Publication title -
solar rrl
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.544
H-Index - 37
ISSN - 2367-198X
DOI - 10.1002/solr.201900337
Subject(s) - photocatalysis , heterojunction , materials science , hydrogen production , quantum dot , electrochemistry , nanotechnology , chemical engineering , hydrogen , catalysis , optoelectronics , electrode , chemistry , biochemistry , organic chemistry , engineering
The MoS 2 quantum dots (QDs) modified black Ti 3+ –TiO 2 /g‐C 3 N 4 hollow nanosphere heterojunction is synthesized via the continuous chemical template deposition and sculpture–reduction processes. The results of structural characterizations imply that the Ti 3+ –TiO 2 /g‐C 3 N 4 /MoS 2 QDs hollow nanosphere heterojunction is prepared successfully. The photocatalytic hydrogen evolution reaction (HER) of the B‐TiO 2 /g‐C 3 N 4 /MoS 2 QDs (≈1524.37 μmol g −1 h −1 ) exhibits an enhancement of ≈33 folds compared with the normal TiO 2 . Furthermore, the process of photocatalysis and the mechanism of photocatalytic HER enhancement are explored, which can be ascribed to the HER activity sites of MoS 2 QDs, Ti 3+ /O v ions in the Ti 3+ –TiO 2 , and hollow nanosphere heterojunction, which are proved by electrochemical measurements.
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