Indexed by:
Journal Papers
First Author:
Zhang, Fei
Correspondence Author:
Li, XY (reprint author), Dalian Univ Technol, Sch Environm Sci & Technol, State Key Lab Fine Chem, Key Lab Ind Ecol & Environm Engn MOE, Dalian 116024, Peoples R China.; Chen, GH (reprint author), Hong Kong Polytech Univ, Dept Mech Engn, Hung Hom, Kowloon, Hong Kong, Peoples R China.
Co-author:
Li, Xinyong,Zhao, Qidong,Chen, Guohua,Zhang, Qianzhe
Date of Publication:
2020-04-01
Journal:
APPLIED CATALYSIS B-ENVIRONMENTAL
Included Journals:
EI、SCIE
Document Type:
J
Volume:
263
ISSN No.:
0926-3373
Key Words:
In2O3-based photocatalyst; Core@shell structure; Charge carriers
lifetime; In situ FTIR; 1,2-dichlorobenzene
Abstract:
In2O3-based nanocomposites with ultralong lifetime charge carriers were successfully prepared by deposition of a thin polyaniline (PANI) shell on the In2O3 monodispersed nanospheres and used as a visible-light responsive catalyst for the decomposition of gaseous 1,2-dichlorobenzene. The effect of PANI shell modification on the micro-structures, optical properties, as well as transfer dynamic behaviors and lifetime of charge carriers were investigated, respectively. Meanwhile, the catalytic oxidation process and the corresponding intermediates of 1,2-dichlorobenzene were investigated by in situ FTIR spectroscopy. More importantly, the optical absorption and the time-resolved photoluminescence investigation jointly corroborated that the enhancement of photocatalytic performance by modification of PANI shell was highly correlated with the substantially prolonged lifetime of charge carriers and simultaneously narrowing bandgap. Thus, it resulted in improved charge separation efficiency and visible-light absorption capability, respectively. This study provides an interesting insight and meaningful guideline for designing long-lifetime In2O3-based heterojunctions via conductive polymer coating.
Translation or Not:
no
