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Crystals 2016, 6(11), 140; doi:10.3390/cryst6110140

Facile Synthesis, Characterization, and Visible-light Photocatalytic Activities of 3D Hierarchical Bi2S3 Architectures Assembled by Nanoplatelets

1
School of Materials Science and Engineering, Luoyang Institute of Science and Technology, Luoyang 471023, China
2
School of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China
3
School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 45400, China
*
Author to whom correspondence should be addressed.
Academic Editor: Monica Distaso
Received: 8 August 2016 / Revised: 18 October 2016 / Accepted: 24 October 2016 / Published: 31 October 2016
(This article belongs to the Special Issue Mesocrystals and Hierarchical Structures)
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Abstract

3D hierarchical Bi2S3 architectures have been successfully synthesized via a simple and effective hydrothermal process. The as-prepared Bi2S3 samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), nitrogen adsorption- desorption isotherms, and UV-vis diffuse reflectance spectrum (DRS). The observation of field emission scanning electron microscope (FESEM) images showed that numerous nanoplatelets are randomly arranged and interconnected with each other, which are assembled into 3D hierarchical Bi2S3 architectures. The photocatalytic activity of the as-prepared Bi2S3 samples was evaluated by the degradation of Rhodamine B (RhB) under visible light irradiation. The effect of hydrothermal temperature, reaction time, pH value and shape on the photocatalytic efficiency of the as-prepared Bi2S3 samples was investigated. The results showed that 3D hierarchical Bi2S3 architectures prepared at 165 °C for 12 h at a pH of 2.4 exhibits high photocatalytic efficiency, which could be ascribed to the synergetic effect of the shape, surface area, crystallinity, band gap and crystalline size. View Full-Text
Keywords: Bi2S3; hierarchical architectures; hydrothermal synthesis; photocatalytic activities Bi2S3; hierarchical architectures; hydrothermal synthesis; photocatalytic activities
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Jia, T.; Wang, X.; Long, F.; Li, J.; Kang, Z.; Fu, F.; Sun, G.; Chen, J. Facile Synthesis, Characterization, and Visible-light Photocatalytic Activities of 3D Hierarchical Bi2S3 Architectures Assembled by Nanoplatelets. Crystals 2016, 6, 140.

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