摘要
首先用热蒸发方法制备了W_(18)O_(49)纳微米棒,然后经醋酸铜饱和溶液浸泡后再热处理在W_(18)O_(49)纳微米棒表面负载Cu_2O制得了W_(18)O_(49)@Cu_2O纳微米复合材料;采用X射线衍射仪、扫描电子显微镜、X射线能谱分析及透射电子显微镜对样品进行分析表征;最后选用亚甲基蓝溶液作为目标降解物,模拟污水处理测试材料的光催化性能。结果表明,W_(18)O_(49)纳微米棒在饱和醋酸铜溶液中浸泡时间越长,所得到的催化剂中Cu_2O的负载量越多,且所制备的W_(18)O_(49)@Cu_2O的纳微米复合材料相对于纯W_(18)O_(49)纳微米棒,其光催化效率得到了显著提高。
W_(18)O_(49) nano/micro-structures(NMS)were first prepared by evaporating of WO3 and elemental S powders,and then W_(18)O_(49)@Cu_2O NMS composite was fabricated by dipping the prepared W_(18)O_(49) NMS in saturated cupric acetate solution and thereafter thermal treatment.The prepared W_(18)O_(49) NMS and the finally obtained W_(18)O_(49)@Cu_2O NMS composite were characterized by X-ray diffraction,scanning electron microscopy,energy dispersive X-ray spectroscopy and transmission electron microscopy.Finally,the photocatalytic performances of the prepared W_(18)O_(49) NMS and the final W_(18)O_(49)@Cu_2O NMS composite were evaluated by the degradation of methylene blue under simulated sunlight irradiation.It is revealed that a longer dipping time would result in more Cu_2O loaded on the W_(18)O_(49) NMS;and the loading of Cu_2O on W_(18)O_(49)NMS can effectively improve its photocatalytic performance.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2018年第S1期174-178,共5页
Rare Metal Materials and Engineering
基金
国家自然科学基金(11674035
11274052
61274015)
高校基本科研业务费专项资金
