Newly developed Fe3O4–Cr2O3 magnetic nanocomposite for photocatalytic decomposition of 4-chlorophenol in water  

作　　者：Khoirakpam Kesho Singh Kula Kamal Senapati Chandan Borgohain Kanak Chandra Sarma 

机构地区：[1]Department of Instrumentation and USIC,Gauhati University,Guwahati 781014,Assam,India [2]Central Instruments Facility,Indian Institute of Technology Guwahati,Guwahati 781039,Assam,India [3]Department of Biochemistry,Tocklai Tea Research Institute,TRA,Jorhat 785008,Assam,India

出　　处：《Journal of Environmental Sciences》2017年第2期333-340,共8页环境科学学报（英文版）

基　　金：support from Central Instruments Facility and Department of Chemistry of Indian Institute of Technology Guwahati for extending various analytical facilities during the course of investigation

摘　　要：Chlorophenols, typically 4-chlorophenols are highly toxic and non-biodegradable organic contaminants which pose serious threat to the environment, particularly when released into aqueous medium. The removal of these pollutants by efficient method has received worldwide concern in recent past. A new Fe3O4–Cr2O3 magnetic nanocomposite was synthesized by wet chemical method under ultrasonic irradiation. Microstructure and morphology of the nanocomposite were characterized by powder X-ray diffraction（XRD）,Fourier transform infrared（FT-IR）, and a transmission electron microscope（TEM）. Magnetic and optical properties were studied by a vibrating sample magnetometer（VSM） and an ultraviolet–visible（UV–Vis） spectrophotometer respectively. The magnetic nanocomposite（MNC） was used as photocatalyst for effective decomposition of 4-chlorophenol in water under ultraviolet（UV） irradiation.Chlorophenols, typically 4-chlorophenols are highly toxic and non-biodegradable organic contaminants which pose serious threat to the environment, particularly when released into aqueous medium. The removal of these pollutants by efficient method has received worldwide concern in recent past. A new Fe3O4–Cr2O3 magnetic nanocomposite was synthesized by wet chemical method under ultrasonic irradiation. Microstructure and morphology of the nanocomposite were characterized by powder X-ray diffraction（XRD）,Fourier transform infrared（FT-IR）, and a transmission electron microscope（TEM）. Magnetic and optical properties were studied by a vibrating sample magnetometer（VSM） and an ultraviolet–visible（UV–Vis） spectrophotometer respectively. The magnetic nanocomposite（MNC） was used as photocatalyst for effective decomposition of 4-chlorophenol in water under ultraviolet（UV） irradiation.

关 键 词：CHLOROPHENOL Magnetic nanocomposite PHOTOCATALYST Core/shell nanocomposite 

分 类 号：X703[环境科学与工程—环境工程] TB33[一般工业技术—材料科学与工程]