摘要
A sol-gel method was used to prepare WO3/MWCNT-TiO2 composites.Their photocatalytic activities were evaluated by the degradation of methylene blue (MB) solution under UV light.The catalysts were characterized by X-ray diffraction,specific surface area measurement,energy-dispersive X-ray analysis,transmission and scanning electron microscopy.Aqueous MB solutions of 100 ml were photodegraded by a small amount of the WO3/MWCNT-TiO2 composite under UV light irradiation.The photocatalytic data showed that the WO3/MWCNT-TiO2 composite achieved a high rate of MB photodegradation.This was attributed to the use of MWCNT which can absorb UV light to create photo-induced electrons,strong adsorption of dye molecules on the photocatalyst,and reduced recombination rate of electron-holes in the WO3/MWCNT-TiO2 composite due to the introduction of the WO3 semiconductor.
A sol-gel method was used to prepare WO3/MWCNT-TiO2 composites.Their photocatalytic activities were evaluated by the degradation of methylene blue （MB） solution under UV light.The catalysts were characterized by X-ray diffraction,specific surface area measurement,energy-dispersive X-ray analysis,transmission and scanning electron microscopy.Aqueous MB solutions of 100 ml were photodegraded by a small amount of the WO3/MWCNT-TiO2 composite under UV light irradiation.The photocatalytic data showed that the WO3/MWCNT-TiO2 composite achieved a high rate of MB photodegradation.This was attributed to the use of MWCNT which can absorb UV light to create photo-induced electrons,strong adsorption of dye molecules on the photocatalyst,and reduced recombination rate of electron-holes in the WO3/MWCNT-TiO2 composite due to the introduction of the WO3 semiconductor.
出处
《催化学报》
SCIE
EI
CAS
CSCD
北大核心
2011年第6期926-932,共7页
基金
suppored by Research Foundation from Hanseo University in 2010
关键词
固体超强碱
氧化钙
硝酸钾
氧化铝
氧化锆
氢氧化钾
硝酸钙
tungsten trioxide
titanium dioxide
multi-walled carbon nanotube
photocatalytic activity
methylene blue
