Synthesis of ternary g-C 3 N 4 /Bi 2 MoO 6 /TiO 2 nanotube composite photocatalysts for the decolorization of dyes under visible light and direct sunlight irradiation

Green Processing and Synthesis

article

Sarah Patumona Manalu¹  Thillai Sivakumar Natarajan¹  Manuel De Guzman¹  Ya-Fen Wang¹  Tien-Chin Chang³  Feng-Chi Yen¹  Sheng-Jie You¹ 

[1] Department of Environmental Engineering, Chung Yuan Christian University;School of Chemical and Bioprocess Engineering, Engineering and Materials Science Centre, University College Dublin (UCD);Institute of Environmental Engineering and Management, National Taipei University of Technology;Industrial Development Bureau, Ministry of Economic Affairs

关键词: Bi2MoO6;    dye decolorization;    g-C3N4;    sunlight irradiation;    ternary composite;    TiO2 nanotube;    visible light;   

DOI  :  10.1515/gps-2017-0077

来源: De Gruyter

【 摘 要 】

Novel ternary nanocomposite photocatalysts based on g-C 3 N 4 /Bi 2 MoO 6 /TiO 2 nanotube were synthesized using simple solid combustion, hydrothermal and wetness impregnation methods. The structural and morphological properties of the synthesized photocatalysts were systematically characterized using powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy and scanning electron microscopy (SEM). The crystal structure and phase purity of unitary, binary, and ternary photocatalysts were confirmed by XRD analysis. The SEM analysis reveals the tubular morphology of the TiO 2 nanotube, and the presence of Ti, C, N, Bi, Mo, O, C, and N in the ternary composites was confirmed by EDX analysis. The photocatalytic decolorization efficiency of the ternary composites was evaluated by monitoring the decolorization of reactive black 5 and methylene blue dyes under visible light and direct sunlight irradiation, and these ternary composites were compared with binary composites and unitary photocatalysts in terms of the decolorization efficiency. After five cycles of adsorption and decolorization reactions, it was confirmed that the ternary composite photocatalysts were highly stable and reusable. From the results, we conclude that ternary composites (g-C 3 N 4 /Bi 2 MoO 6 /TiO 2 nanotube) are efficient photocatalysts for the decolorization of dyes.

【 授权许可】

CC BY