中文摘要：

采用柠檬酸络合和浸渍两步法制备了一系列B-xMo共掺杂BiVO4可见光光催化剂，并采用XRD、XPS、SEM、EDS、BET和UV-vis等表征和分析。以降解甲基橙（MO）、亚甲基蓝（MB）、金橙Ⅱ号（AOⅡ）和罗丹明B（RhB）溶液为指针反应，考察掺杂对BiVO4可见光催化活性的影响。结果表明：B-Mo共掺杂能抑制BiVO4晶粒生长，比表面积增大，共掺杂后BiVO4禁带宽度窄化，且氧空位较单掺杂增加。当Mo掺杂量为2．5％（原子分数）时制备的B-2．5Mo-BiVO4对甲基橙的降解率达96％左右，且该样品也能有效降解亚甲基蓝（MB）、金橙Ⅱ号（AOⅡ）和罗丹明B（RhB）溶液。

英文摘要：

Serials B-xMo codoping BiVO4 photocatalysts were successfully synthesized by citric acid complex and impregnation two steps. The as prepared samples were characterized by XRD, XPS, SEM, BET, and UV-vis DRS analyses and the photocatalytic activities were investigated through photocatalytic degradation rate of methyl orange （MO）, methyl blue, acid orange Ⅱ , and rhodamine B. The results show that：B-Mo codoping can inhibit the crystal sizes of BiVO4 photocatalysts but the phase still was monoclinic. The B-Mo codoping BiVO4 samples have higher surface area, lower band-gaps and more oxygen vacancy, which contribute to the higher photocatalytic performance. The degradation rate of MO in 50 rain is 96% for B-2. 5Mo-BiVO4 which also can effectively degrade methyl blue, acid orange Ⅱ , and rhodamine B.