Preparation And Photocatalytic Performance Of Cellulose Based Activated Carbon Catalytic Fiber

With the high speed development of economy,there was a great pressure on the environment.A large number of industrial wastewater was not under standard,which caused a strong impact on environment.Therefore,in terms of environment pollution,especially the textile and domestic wastewater,photocatalytic materials obtained people's attention.For example TiO₂,which is used in the photocatalytic treatment.However,due to the disadvantage of TiO₂,which reduced its catalytic efficiency.A novel hollow microfiber photocatalyst,TiO₂ loaded on the surface of hollow microfibers?HMFs?by preparation of natural cotton carboxymethyl nanoparticles has been successfully performed through high temperature calcination with nitrogen process.The influence of TiO₂ and hollow structure on the co-photocatalytic behavior of TiO₂/HMFs during the degradation of methyl orange?MO?were studied.The novel photo-catalysts have been characterized and analyzed by high-resolution transmission electron microscopy?TEM?,elemental mapping by energy-dispersive X-ray spectroscopy?EDS?,powder X-ray diffraction?XRD?,Fourier transform infrared?FT-IR?spectroscopy,X-ray photoelectron spectroscopy?XPS?,electron paramagnetic resonance?EPR?,specific surface area?BET?and thermogravimetric analysis?TG?.The results showed that with the calcination temperature increased,the hollow structure of TiO₂/HMFs was more and more obvious during the low temperature range?600⁷50??.But when the temperature continued to increase from 800? to 900?,the shell of pipe changed thin until collapsed.The photocatalytic activity of TiO₂/HMFs composite photo-catalyst was evaluated by the photo-degradation of methyl orange under visible light irradiation.The degradation results showed a purification of more than 90% methyl orange in simulating wastewater,and confirmed that the prepared Ti O₂/HMFs composite photo-catalyst possess superior absorption capability and synergistic co-photocatalytic activities.The hollow-sized structure of HMFs was also beneficial for increasing adsorption capability for organic pollutants,and accelerated the decomposition of organic pollutants.So the synergistic co-photocatalytic effect of HMFs and TiO₂ was significant for wastewater treatment and prevention of air pollution.TiO₂ and MoS₂ loaded on the surface of hollow microfibers?HMFs?by preparation of natural cotton carboxymethyl nanoparticles has been successfully performed on the FTO and calcined in a high temperature with nitrogen.The new photocatalytic has been characterized and analyzed by FT-IR,SEM,TEM,EDS,XRD,XPS,BET and TG.The photocatalytic activity of MoS₂/TiO₂?HMFs?composite material was evaluated by the photodegradation of MB under visible light irradiation.The degradation results showed that a purification of more than 98% MB in simulating wastewater,and confirmed that the prepared MoS₂/TiO₂?HMFs?composite photocatalyst has acquired the superior synergistic of adsorption and catalysis.MoS₂ can enlarge the wavelength response range in the visible region of the solar spectrum and ACFs can beneficially increase adsorption capability for organic pollutants and accelerate the decomposition of organic pollutant.In a word,the synergistic co-photocatalytic effect of ACFs,TiO₂ and the sensitization of MoS₂ were very significant for wastewater treatment or prevention of air pollution.TiO₂ and MoS₂ loaded on hollow microfiber,which were treated by high temperature calcination,improved its functionality,making the film of three dimensional network structure.Photo-catalytic experiment showed that the film had wonderful catalytic ability.