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Fabrication and characterization of visible light-driven In2.77S4/In(OH)3 composite photocatalysts with excellent redox performance

  • Xiang-Feng Wu
  • Hui Li
  • Jun-Zhang Su
  • Jia-Rui Zhang
  • Yan-Mei Feng
  • Jun-Cheng Pan
  • Ying Zhang
  • Li-Song Sun
  • Wei-Guang Zhang
  • Guo-Wen Sun
Research Paper

Abstract

The In2.77S4 microspheres had been firstly fabricated by using polyethylene glycol (PEG) as the morphological modifier and then used to hybridize with In(OH)3 nanocubes by a simply depositional method. The structure, optical properties, morphology, chemical compositions, and charge carrier behaviors of the as-prepared In2.77S4/In(OH)3 composites were characterized, respectively. The methyl orange, tetracycline, rhodamine B, and Cr(VI) dilute solution were selected to evaluate their photocatalytic activities. Experimental results showed that In(OH)3 nanocubes could improve the photocatalytic activity and recyclability of the In2.77S4 microspheres under the visible light irradiation. With the usage of In(OH)3 increased, the photocatalytic efficiency of the hybrids was firstly increased and then decreased. When the mass ratios of In2.77S4 to In(OH)3 were 6:2, it reached the maximum of 100% in 15 min for methyl orange, obviously higher than 67.4% of In2.77S4 and 1.1% of In(OH)3. Meanwhile, it could also oxidize 85.6% of tetracycline in 20 min, 97.8% of rhodamine B in 7.5 min, and reduce 92.9% of Cr(VI) in 30 min under the visible light irradiation. Moreover, it could still degrade 91.7% of methyl orange solution after 3 cycles, which was much higher than 40.7% of In2.77S4 microspheres. In addition, the possible mechanism of enhancing photocatalytic properties was proposed.

Keywords

Photocatalysis In2.77S4 In(OH)3 Organic pollutants Cr(VI) Nanostructured catalysts 

Notes

Acknowledgments

This work was funded by the National Natural Science Foundation (No. 51778378) and Natural Science Foundation of Hebei Province, China (No. E2013210011).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer Science+Business Media B.V., part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of Materials Science and Engineering, Hebei Provincial Key Laboratory of Traffic Engineering MaterialsShijiazhuang Tiedao UniversityShijiazhuangChina
  2. 2.School of ScienceNorth University of ChinaTaiyuanChina

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