Synthesis of Ag/Cu2O hybrids and their photocatalytic degradation treatment of p-nitrophenol
Synthesis of Ag/Cu2O hybrids and their photocatalytic degradation treatment of p-nitrophenol
复制标题
DOI：
10.1049/mnl.2011.0593
复制
发表时间：
2011-12
影响因子：
1.3
通讯作者：
L. Pan;Li Li-Li;Yonghong Chen
中科院分区：
文献类型：
--
作者：
L. Pan;Li Li-Li;Yonghong Chen
采用水热法，用Na 2SO 3还原AgNO 3和Cu（Ac）2，制备了不同Ag含量的Cu 2 O和Ag/Cu 2 O杂化材料。采用X射线衍射、透射电子显微镜和扫描电子显微镜对样品进行了表征。将所得样品作为催化剂降解废水中的对硝基苯酚，考察了其催化参数，包括光照时间、催化剂组成、催化剂浓度、污染物初始浓度和催化剂重复性。结果表明，Ag含量较高（如20或25%Ag）的Ag/Cu 2 O杂化材料可有效降解对硝基苯酚。催化剂重复使用9次后仍具有较高的催化活性。讨论了可能的光催化机理。该技术在处理含硝基酚类污染物的废水中具有潜在的应用价值。
Cu2O and Ag/Cu2O hybrids with different Ag contents were synthesised by reducing AgNO3 and Cu(Ac)2 with Na2SO3 via a hydrothermal method. The as-prepared samples were characterised by X-ray diffraction, transmission electron microscopy and scanning electron microscopy technologies. The final samples were used as catalysts for degradation of p-nitrophenol in wastewater, and their catalytic parameters, including irradiation time, catalyst composition, concentration of catalyst, initial concentration of pollutant and repeatability of catalyst, were investigated in detail. The results indicated that p-nitrophenol could be effectively degraded by Ag/Cu2O hybrid with higher Ag content (such as 20 or 25% Ag). After being used nine times, the corresponding catalyst still exhibited high catalytic activity. The possible photocatalytic mechanism was discussed. The technology possesses potential application in the treatment of wastewater containing nitrophenol pollutants.