Sunlight Responsive 2D/2D SnS2/BiVO4 Nanocomposite for Photocatalytic Removal of Ciprofloxacin Antibiotic from Aqueous Medium

被引:7
作者
Kumar, Gandharve [1 ]
机构
[1] Teerthanker Mahaveer Univ, Fac Engn, Dept Chem, Moradabad 244001, India
关键词
Z-scheme; SnS2; BiVO4; Solar photocatalyst; Antibiotics degradation; HETEROJUNCTION PHOTOCATALYSTS; HYDROTHERMAL SYNTHESIS; DRINKING-WATER; DEGRADATION; COMPOSITES; FABRICATION; PEROXYMONOSULFATE; CONTAMINATION; CONSTRUCTION; TETRACYCLINE;
D O I
10.1007/s10904-023-02711-y
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
A bismuth vanadate (BiVO4) irregular nanoplates surface decorated with tin disulphide (SnS2) nanoplates is developed as a visible light responsive photocatalyst for the degradation of ciprofloxacin antibiotics. The photocatalyst, named SnS2/BiVO4 is characterized by various physiochemical techniques such as powder X-Ray diffraction, field-emission scanning electron microscopy, high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, UV-vis diffuse reflectance spectroscopy, electrochemical impedance spectroscopy and photoluminescence. The optimized batch 0.15SnS(2)/BiVO4 photocatalysts degraded 92% (CIP, 10 mg/L) with a rate constant 0.0184 min(-1), which was about 3.75 times and 7.66 times higher than that of the BiVO4 (k = 0.0049 min(-1)) and SnS2 (k = 0.0024 min(-1)) photocatalyst respectively. The improved photocatalytic performance of SnS2/BiVO4 nanocomposite is mainly due to (a) strengthened visible light absorption by 0.15SnS(2)/BiVO4 due to the shifting of absorption edge towards higher wavelength (b) Z-scheme-like band position of BiVO4 and SnS2, (c) efficient inhibition of charge carrier recombination, and (d) in situ generation of reactive oxygen species.
引用
收藏
页码:2710 / 2720
页数:11
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