Synthesis of TiO_(2) nano-particles and their photocatalytic activity for formaldehyde and methyl orange degradation  

作　　者：XIAO Xinyan LIAO Dongliang ZHANG Huiping CHEN Huanqin 

机构地区：[1]College of Chemical and Energy Engineering,South China University of Technology,Guangzhou 510640,China [2]Department of Chemical Engineering,Lakehead University,Thunder Bay,Ontario,P7B 5E1,Canada

出　　处：《Frontiers of Chemical Science and Engineering》2007年第2期178-183,共6页化学科学与工程前沿（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.20176013).

摘　　要：TiO2 nano-particles were synthesized by sol-gel technique and characterized by X-ray diffractometer(XRD)and transmission electron microscope(TEM).Their photo-catalytic activities for formaldehyde(FA)and methyl orange(MO)degradation were tested using degradation rate(η)as an evaluation index.Based on the orthogonal test results,the optimal condition for TiO_(2) preparation was obtained.Results showed that particle sizes were in the range of 10–40 nm,and that prepared TiO_(2) had better photocatalytic activity than P25.A simplified model was developed to evaluate the apparent quantum efficiency(Φapp)of this photocatalytic reaction system.

关 键 词：sol-gel technique nano-titania photocatalytic degradation FORMALDEHYDE methyl orange 

分 类 号：O62[理学—有机化学]