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TiO 2 Nanobelts Decorated with In 2 S 3 Nanoparticles as Photocatalysts with Enhanced Full‐Solar‐Spectrum (UV–vis–NIR) Photocatalytic Activity toward the Degradation of Tetracycline
Author(s) -
Li Yujie,
Li Tong,
Tian Jian,
Wang Xinzhen,
Cui Hongzhi
Publication year - 2017
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.201700127
Subject(s) - photocatalysis , heterojunction , rhodamine b , materials science , visible spectrum , absorption (acoustics) , photochemistry , nanoparticle , chemical engineering , degradation (telecommunications) , nanotechnology , catalysis , chemistry , optoelectronics , organic chemistry , composite material , telecommunications , computer science , engineering
Herein, ultradispersed In 2 S 3 nanoparticle (NP)/TiO 2 nanobelt (NB) heterostructures with an intimate interfacial coupling effect are synthesized from the consideration of combining the visible/near‐infrared photoabsorption property of In 2 S 3 with the excellent UV photocatalytic property of TiO 2 . In this process, the 1D TiO 2 NBs not only perform as the support to form the heterostructure, but are also employed as a dispersant to confine the aggregation of In 2 S 3 NPs. As expected, the obtained In 2 S 3 NP/TiO 2 NB heterostructure gives rise to a prominently strong optical absorption in the full solar region of 300–1800 nm, and thus displays a desired photocatalytic degradation of tetracycline in full utilization of all solar energy, compared with that of pristine In 2 S 3 and TiO 2 . Besides, the In 2 S 3 NP/TiO 2 NB heterostructure photocatalysts have no selectivity and can effectively degrade other different kinds of organic pollutants, including cationic dyes (methyl blue and rhodamine B) and colorless chemical pollutants (phenol and salicylic acid). The exceptional photocatalytic enhancement is due to the synergistic interactions of heterojunction with the strong interfacial coupling effect, the In 2 S 3 extended light absorption, efficient photogenerated e − /h + pair separation, and fully exposed reactive sites induced by uniform packing of the ultrasmall In 2 S 3 .