Chitosan Templated Synthesis Of Silica Porous Materials And Their Adsorption Properties

Porous material as a novel nanoporous material has become one of the focus in academia in recent years. Silica porous materials are formed throughthe way of assembling or synergetic effe cts of supermolecule between organics and inorganic substance. Owing to the character that spec ific surface is higher, duct size is uniform, aperture can be regulated continuously from2nm to50nm, adsorbability and desorption can be controlled and so on, they have broad application pros pect in the field of electrochemistry, biochemistry, biomedical sciences, catalysis, separation, nan otechnology and photo-electromagnetic etc..This article use chitosan as template,sodium silicate as Silicon source,synthesized a series of CS/SiO2porous material by using the sol-gel process combined with precipitation, the influence of product by using different synthesis condition was observed by SEM, TEM,TGA, BET, N2adsorption-desorpation isotherm. And then use UV done a study on the adsorption of humic acid performance.The result show that the product we synthesized has a obvious multiaperture characteristics,and adsorption performancc of humic acid good.