【摘要】 本文以Cu(NO3)2.3H2O为铜源,浓氨水为络合剂和NaOH调节溶液的pH,采用化学浴法(CBD)制备了CuO薄膜。通过X-射线衍射(XRD)和扫描电子显微镜(SEM)对其光催化前后的结构和形貌进行了表征。将CuO薄膜放在含有H2O2的甲基橙溶液中,经不同光源照射一定时间后,取其溶液进行可见分光光度分析来研究CuO薄膜的光催化性能。试验结果表明:紫外灯光源下,当催化剂CuO薄膜的表面积为12.50cm2、3.0%H2O2用量为40.0ml、pH=7时,降解甲基橙溶液的效果较好,光照10min后降解率就达到100.0%;不加H2O2时,需光照40min降解率才能达到100.0%,说明H2O2对CuO膜光催化降解甲基橙起到协同促进作用。更多还原

【Abstract】 In this study,we prepared CuO thin film from Cu(NO3)2·3H2O,ammonium hydroxide and NaOH by using chemical bath deposition(CBD) method.Structural characterization of the film has been made before and after photocatalytic reaction using XRD and SEM.CuO thin film was then applied to Methyl Orange solution containing H2O2.The reaction solution was collected for visible spectrophotometry after certain periods of radiation under different light sources.Our experiments demonstrate that,optimal Methyl Orange degradation rate can be achieved with CuO film at surface area of 12.50cm2,40.0mL 3.0% H2O2 and pH=7 for the reaction system,under UV light.Under optimal conditions,100.0% degradation rate can be obtained in 10 min,whereas in 40 min in the absence of H2O2,indicating a cooperative effect on photocatalytic degradation of methyl orange by H2O2 and CuO thin film.更多还原