Bactericidal activity and mechanism of Ti-doped BiOI microspheres under   visible light irradiation

doi:10.1016/j.colsurfb.2016.08.016

CORC > 北京大学 > 环境科学与工程学院

	Bactericidal activity and mechanism of Ti-doped BiOI microspheres under visible light irradiation
	Liang, Jialiang ; Deng, Jun ; Li, Mian ; Xu, Tongyan ; Tong, Meiping
刊名	COLLOIDS AND SURFACES B-BIOINTERFACES
	2016
关键词	Photocatalytic disinfection Ti doped BiOI microspheres Disinfection effects Inactivation mechanisms Active species DRIVEN PHOTOCATALYTIC INACTIVATION MODIFIED MAGNETIC NANOPARTICLES E. COLI SOLVOTHERMAL SYNTHESIS WATER DISINFECTION ESCHERICHIA-COLI BY-PRODUCTS PERFORMANCE CL BR
DOI	10.1016/j.colsurfb.2016.08.016
英文摘要	Ti doped BiOl microspheres were successfully synthesized through a solvothermal method. The photocatalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS) and UV-vis diffuse reflectance spectra (DRS) spectroscopy, respectively. The as-synthesized microspheres had 3D hierarchical structures, and the morphologies and visible-light-driven (VLD) disinfection performances were found to be determined by the amount of loaded Ti. The incorporation of Ti in the lattice of BiOl broadened the band gap of BiOI and enhanced the VLD disinfection activity. Ti doped BiOI microspheres with the optimal Ti content exhibited excellent antibacterial performances against both representative Gram-negative and Gram-positive strains, which completely inactivated 3.0 x 10(7) CFU mL(-1) E. coli in 24 min and 3.0 x 10(6) CFU mL(-1) S. aureus in 45 min, respectively. Active species including h*, e(-), O-center dot(2)- and H2O2 were found to play important roles in disinfection system. Moreover, the damage of cell membrane and emission of cytoplasm directly led to the inactivation. (C) 2016 Published by Elsevier B.V.; National Natural Science Foundation of China [41422106, 21377006]; program for New Century Excellent Talents in University [NCET-13-0010]; SCI(E); EI; PubMed; ARTICLE; tongmeiping@iee.pku.edu.cn; 307-314; 147
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/493151]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Liang, Jialiang,Deng, Jun,Li, Mian,et al. Bactericidal activity and mechanism of Ti-doped BiOI microspheres under visible light irradiation[J]. COLLOIDS AND SURFACES B-BIOINTERFACES,2016.
APA	Liang, Jialiang,Deng, Jun,Li, Mian,Xu, Tongyan,&Tong, Meiping.(2016).Bactericidal activity and mechanism of Ti-doped BiOI microspheres under visible light irradiation.COLLOIDS AND SURFACES B-BIOINTERFACES.
MLA	Liang, Jialiang,et al."Bactericidal activity and mechanism of Ti-doped BiOI microspheres under visible light irradiation".COLLOIDS AND SURFACES B-BIOINTERFACES (2016).