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Photocatalytic Behaviors of TiO 2 Nanoblets Coated with MoS 2 Nanosheets for Solar‐Driven Photocatalysis
Author(s) -
Zhou Fang,
Liu Wenjun,
Miao Zhilei,
Wang Qiang
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201900743
Subject(s) - photocatalysis , materials science , rhodamine b , photochemistry , photodegradation , nanocomposite , methylene blue , methyl orange , degradation (telecommunications) , hydrothermal circulation , heterojunction , chemical engineering , absorption (acoustics) , nanotechnology , optoelectronics , chemistry , catalysis , composite material , organic chemistry , telecommunications , computer science , engineering
TiO 2 nanoblets coated with MoS 2 nanosheets, donated as T@M, were successfully prepared by a facile hydrothermal method. In comparison with pristine TiO 2 nanoblets, the composite of MoS 2 nanosheets could enlarge the spectral response of sunlight. The surface heterostructures of T@M nanocomposite could effectively separate the photogenerated electron‐hole pairs, and greatly inhibit the recombination of photogenerated electrons and holes. The photocatalytic performances of the as‐synthesized products were investigated in contrast by photodegradation of methylene blue, methyl orange, rhodamine B and levofloxacin. Under 350 W Xe lamp irradiating for 2 h, T@M exhibited excellent degradation performance. Interestingly, blue shifts of the dyes’ absorption peaks were observed, which probably attributed to the incomplete products decomposed by as‐absorbed dye molecules on the surface of TiO 2 nanoblets. Compared with pure TiO 2 nanoblets, T@M has less amount TiO 2 , higher separation efficiency of photogenerated electron‐hole pairs and better inhibition efficiency of photogenerated carriers ’ recombination, leading less blue shift and higher degradation efficiency.