仲钨酸盐A柱撑化合物Mg_(12)Al_6(OH)_(36)(W_7O_(24))·4H_2O的合成及其光催化性能研究  

Synthesis and Photocatalytic Behavior of Layered Double Hydroxide Pillared by Paratungstate A Ion, Mg_(12) Al_6(OH)_(36) (W_7O_(24) )·4H_2O

作　　者：郭伊荇[1] 李丹峰[1] 胡长文[1] 王永慧[1] 王恩波[1] 岳斌[2] 

机构地区：[1]东北师范大学化学学院多酸化学研究所,长春130024 [2]复旦大学化学系,上海200032

出　　处：《高等学校化学学报》2001年第9期1453-1455,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金 (批准号 :2 0 0 710 0 7);教育部骨干青年教师基金资助

摘　　要：Layered double hydroxide pillared by Paratungstate A ion, Mg 12 Al 6(OH) 36 (W 7O 24 )·4H 2O, was prepared via anion exchange reaction of the synthetic precursor, Mg 4Al 2(OH) 12 TA· x H 2O(TA 2- =terephthalate), and W 7O 6- 24 ion. Trace aqueous organochlorine pesticide, hexachlorocyclohexane, was totally degraded and mineralized into CO 2 and HCl by irradiating a suspension of Mg 12 Al 6(OH) 36 (W 7O 24 )·4H 2O and HCH in the near UV area. The model and pathway for the photocatalytic degradation of HCH on the Mg 12 Al 6(OH) 36 (W 7O 24 )· 4H 2O were proposed, indicating that the interlayer space is the reaction field, and that photogeneration of OH · radicals are responsible for degradation pathway.Layered double hydroxide pillared by Paratungstate A ion, Mg 12 Al 6(OH) 36 (W 7O 24 )·4H 2O, was prepared via anion exchange reaction of the synthetic precursor, Mg 4Al 2(OH) 12 TA· x H 2O(TA 2- =terephthalate), and W 7O 6- 24 ion. Trace aqueous organochlorine pesticide, hexachlorocyclohexane, was totally degraded and mineralized into CO 2 and HCl by irradiating a suspension of Mg 12 Al 6(OH) 36 (W 7O 24 )·4H 2O and HCH in the near UV area. The model and pathway for the photocatalytic degradation of HCH on the Mg 12 Al 6(OH) 36 (W 7O 24 )· 4H 2O were proposed, indicating that the interlayer space is the reaction field, and that photogeneration of OH · radicals are responsible for degradation pathway.

关 键 词：非均相光催化 仲钨酸盐A 有机氯杀虫剂 柱撑化合物 水 有机污染物 光催化降解 

分 类 号：X703[环境科学与工程—环境工程] O643.361[理学—物理化学]