利用水热法制备了Cu掺杂的BiVO4复合可见光催化剂,借助X射线衍射(XRD)、X射线光电子能谱(XPS)、紫外-可见漫反射光谱(DRS)和扫描电子显微镜(SEM)对其进行表征.XRD分析显示所有催化剂都呈现单斜结构.XPS结果显示掺杂元素均以其稳定氧化态形式存在于催化剂表面.DRS谱中掺杂样品的吸收边比纯BiVO4都有不同程度的红移.以甲基橙(MO)的可见光催化降解反应为探针,研究了催化剂的可见光催化性能.结果表明,经Cu掺杂改性的催化剂的催化能力比纯BiVO4有所提高.对其掺杂增强催化能力的可能原因进行了讨论. Cu-doped BiVO4 composite visible light catalysts were prepared by hydrothermal method. Their structures were characterized by XRD, XPS, DRS and SEM XRD analysis showed that all the catalysts showed a monoclinic structure.XPS results showed that all the doping elements were present in the stable oxidation state on the catalyst surface.The absorption edge of the doped samples in the DRS spectrum had different degrees of red than the pure BiVO4 The photocatalytic activity of the catalyst was investigated by visible light catalytic degradation of methyl orange (MO). The results showed that the catalytic activity of the catalyst modified by Cu doping was higher than pure BiVO4 The possible reasons for the increased catalytic ability are discussed.