Cu_2O@Cu_4(SO_4)(OH)_6的制备及黑暗下降解橙黄Ⅱ  

Preparation and Catalytic Degradation of Acid Orange 7 in the Dark on Cu_2O@Cu_4(SO_4)(OH)_6

作　　者：蔡丹丹[1] 万霞[1] 铁绍龙[1] 

机构地区：[1]华南师范大学化学与环境学院,广州510006

出　　处：《华南师范大学学报（自然科学版）》2017年第2期102-108,共7页Journal of South China Normal University(Natural Science Edition)

基　　金：国家自然科学基金项目(11374109);广东省中小企业创新基金项目(2015B090927006)

摘　　要：采用一种温和、简单、环保的方法合成了Cu_2O@Cu_4(SO_4)(OH)_6系列核壳型催化剂.包覆了碱式铜盐[Cu_4(SO_4)(OH)_6]的Cu_2O(核)表面变粗糙,内部出现大量孔洞,并且随着包覆摩尔比的增加,出现独立的片状碱式铜盐晶相.研究发现催化剂中同时存在Cu(Ⅰ)、Cu(Ⅱ)和Cu(Ⅲ)3种价态,因此在黑暗条件下Cu_2O@Cu_4(SO_4)(OH)_6样品具有高的催化活性,对150 mg/L的橙黄Ⅱ染料在1 h内的降解率达98.2%,远高于纯Cu_2O的降解率(7%),说明高活性的Cu(Ⅲ)在黑暗条件下启动了催化降解反应.A series of core-shell catalysts with the composition of Cu2O@Cu4（SO4）（OH）6 are synthesized by using a gentle,simple and eco-friendly method.The surface of Cu2O（core） become rough and a large number of cavities are appeared in the interior when it is coated with basic copper sulfate.With the increase of coating proportion,an independent crystalline phase with lamellar structure which consist of basic copper sulfate is formed.Cu（Ⅰ）,Cu（Ⅱ） and Cu（Ⅲ） simultaneously exist in Cu2O@Cu4（SO4）（OH）6 catalyst,so the samples show high catalytic activity in the dark.98.2% of acid orange 7 with the concentration of 150 mg/L are degraded in 1 h,which show much higher degradation rate than pure Cu2O（the degradation rate is 7%）.The result indicates that Cu（Ⅲ） is considered to be an inducer which leads to the catalytic reaction in the dark.

关 键 词：CU2O 碱式铜盐 核壳型催化剂 降解 橙黄Ⅱ 

分 类 号：O611.6[理学—无机化学]