摘要
半导体TiO2纳米材料由于其无毒无害,化学性质稳定等优点,目前已经成为环境污染控制领域和材料学领域共同研究的热点。TiO2纳米材料对环境污染物光催化氧化效果显著,但是随着TiO2的反复使用,其催化效率会减低,最终失去光催化的活性;文章主要对TiO2在光催化降解环境污染物后的失活和再生情况进行了综述,讨论了TiO2光催化剂失活的机理以及其再生的途径。
Semiconductor titanium dioxide nanoparticles is becoming an increasing interest in the field of environment pollution control and materials because of the chemical stability and non-toxic properties. The efficiency of photocatalysis will decrease with time and eventually lose its photocatalytic activity although TiO2 photocatalyst can purify pollutants efficiently. The deactivation and regeneration of TiO2 to oxidize volatile organic compounds (VOCs) was reviewed, and the mechanism of deactivation of TiO2 and approaches of regeneration was also discussed.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2005年第B12期131-134,共4页
Environmental Science & Technology
基金
北京市教委基金资助项目(KM20031141714)
关键词
TIO2
光催化
失活
再生
挥发性有机污染物
titanium dioxide
photocatalysi
deactivation
regeneration
volatile organic compounds (VOCs)