抗坏血酸为燃烧剂合成铜锰复合物及光催化研究

Preparation of Cu/Mn composites by using ascorbic acid as combustion agent and its photo-catalysis function

采用抗坏血酸为燃烧剂,高锰酸钾和硝酸铜为原料,通过燃烧法快速合成铜锰复合氧化物。利用XRD表征分析考察原料高锰酸钾和硝酸铜摩尔比对复合物结构和性能的影响;利用电镜表征样品的形貌;利用BET考察样品的比表面积。并以此复合物为催化剂和吸附脱色剂考察复合物对亚甲基蓝的光催化性能和对酸性品红的脱色性能。同时,考察了复合物的类型、催化剂的用量、溶液的pH、H_2O_2用量等对催化剂光催化和脱色的影响。

Using ascorbic acid as combustion agent, potassium permanganate and copper nitrate as raw materials, copper-manganese composites are rapidly synthesized by combustion method. The influence of molar ratio between potassium permanganate and copper nitrate on the structure and performance of prepared composites is characterized by XRD.The morphology of composites is determined by scanning electron microscopy. The specific surface area of composites sample is analyzed by BET. The photo-catalytic performance of composites on methylene blue and the decolorizing performance of composites on acid fuchsin are both studied.The influences of composite type ,catalyst dose, pH value of the solution and hydrogen peroxide dose on photo-catalysis and decolorization are determined.