| Photocatalyst has promised application in the environmental protection,such as air purification,waste,water treatment,bacillus resistance,pollution elimination,mist prevention and self-cleanness.TiO2-based semiconductor photocatalysis technology has been shown to be potentially advantageous for environmental remediation as it may lead to complete mineralization of pollutants at ambient conditions with the use of ultraviolet light as the energy source.However,the large scale application of titanium dioxide as mutual photocatalyst is hampered by the fact that it absorbs only the very small ultraviolet part(3-4%)of solar light due to its wide band-gap of 3.2eV.In order to further enhance the TiO2 photocatalyst activeness,this research uses the non-metallic ion doping to modify TiO2 on the base of analysing TiO2 photochemical mechanism.In this study,selected nonmetal B has prepared the doping modification nanometer TiO2 by using the sol-gel method.Ti(OC4H9)4 is the source of titanium,C2H5OH is the solvent.In the nature pH,the room temperature,the same dry ways,considered the roasting temperature how to influence the crystal composition,the particle size and the catalytic activity.And uses XRD to study the phase transition of the TiO2 powder body in the roasting process,inspect the influence of various nonmetallic ion boron doping to crystal structure and size of the TiO2 powder body.Through the degradation methyl orange solution,has studied boron to the titanium dioxide photocatylytical activity,has determined the best doping roasting temperature and the best doping quantity.Through XRD,FTIR,UV- Vis and TEM discussed the mechanism of nonmetallic ion boron doped titanium dioxide powder body to influence photocatylytical activity.TiO2 has weak adsorption capability for organic compound by itself.If we introduce adsorptive carriers to load TiO2,Photocatalytic efficiency will increase obviously.It is adsorptive carriers's maximum advantage that they can adsorp organic compound around semiconductor particle,improve local concentration and avoid middle materials volatile or escape.Such behavior can accelerate reaction.At present,Relative researches have made some progress.On the basis of the above background,the paper continue utilize dipping-drying-heating several times to load B-TiO2 onto activated carbon forming photocatalytic agent B-TiO2/AC.The relations between loading quantity and boron doping with photocatalytic degradation menthyl orange solution are also evaluated.Physiochemical properties,morphology,crystalline phase and value of B-TiO2/AC were determined by methods of XRD,SEM.Lastly,the paper complete the optimization of experiment conditions.Parameters include amount of B-TiO2/AC and initial concentration of ME.The results showed;(1)The boron-doped TiO2 powder(prepared by the sol-gel method)calcined at 400℃showed the highest photocatalytic activity under visible light irradiation mainly because boron doping enhanced the absorption of TiO2 towards visible light and ultraviolet light,and had little influence on the structure of TiO2.(2)boron-doped TiO2 prepared with activated carbon as support by the sol-gel method demonstrated higher photocatalytic activity due to better structural properties.(3)The experimental results indicated that the effects of boron-doped TiO2 prepared with activated carbon as support degrading reactive and textile dyeing waste water are impactful.At the same time,the recycling experiment of boron-doped TiO2/AC suggested...
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