化学工程2013，Vol.41Issue(7)：9-13,5.DOI:10.3969/j.issn.1005-9954.2013.07.003
不同添加物对UV-TiO2体系降解水体中邻苯二甲酸二甲酯的影响
Effect of additive substances on UV-TiO2 photodegradation of dimethyl phthalate in aqueous solution
摘要
Abstract
The depletion of dimethyl phthalate (DMP) was investigated in the presence of several co-existing organic and inorganic substances (cations and anions).The results indicate that the addition of organic substances (formaldehyde,methanol and acetone) drastically suppress the decomposition of DMP.The addition of the examined anions,CI－,SO42－,CO32－ and cations,Cu2+,Fe2+,Zn2+ has an adverse effect on the degradation rates to a varying degree of Cl－ ＞ SO42－ ＞ CO32－ and Fe2+ ＞ Zn2+ ＞ Cu2+,except for NO3－ nearly having no obvious action and ferric ion contributing to an enhancement effect.Oxidant substances,such as KBrO3,K2S2O8 and H2O2 all improve the photodegradation rate of DMP in order of S2O82－ ＞ BrO3 － ＞ H2O2.The effects of the above materials on DMP photocatalytic degradation were discussed from the optical absorption,adsorption,as well as photogenerated electrons and hole capture actions,etc.Finally,all kinds of reactive species contributing to photodegradation reaction were compared quantitatively and a feasible direction of further improving the efficiency of TiO2 photocatalytic degradation was proposed.关键词
UV-TiO2/光降解/邻苯二甲酸二甲酯Key words
UV-TiO2 / photocatalytic degradation / dimethyl phthalate分类
通用工业技术引用本文复制引用
景伟文,白姗姗,柯思佳,高珍珍..不同添加物对UV-TiO2体系降解水体中邻苯二甲酸二甲酯的影响[J].化学工程,2013,41(7):9-13,5.基金项目
国家自然科学基金资助项目(41263004) （41263004）
新疆维吾尔自治区高校科研计划青年教师科研启动基金项目(XJEDU2009S40) （XJEDU2009S40）
大学生创新基金 （）
