Preparation of Bamboo Charcoal loaded with TiO_2 and comparison between loaded with TiO_2 or not in adsorption capacity of Formaldehyde

TiO_2 sol was prepared by a sol-gel method using butyl titanate as raw material,and TiO_2 photocatalyst loaded on granular bamboo charcoal(TiO_2/BC) was prepared by a molecular soakage-filtration method using granular bamboo charcoal(c) as supporter.In the study,BC and TiO_2/BC were scanned in the electron microscope,and comparison between loaded with TiO_2 or not in adsorption capacity of Formaldehyde was studied.The results show that:When TiO_2 photocatalyst loaded on granular bamboo charcoal,the distribution was uniform.And TiO_2 didn't block the porous,but concentrated in the macroporous and the depressions of granular bamboo charcoal.So the reducing extent of surface area of BC from TiO_2 was not large.BC belongs non-polar material,and its polarity increased after high-polar TiO_2 loaded on granular bamboo charcoal.This leaded to the adsorption capacity of TiO_2/BC to formaldehyde increased greatly.