Ni2P/Bi2MoO6复合材料的制备及可见光催化活性

分别制备了花状Bi₂MoO₆和片状Ni₂P，采用研磨、水热及超声的方式将两种材料复合，考察了负载方式、负载率和溶液pH值对其可见光下降解亚甲基蓝（MB）的影响；利用XRD、XPS、FTIR、SEM、PL和UV-Vis等测试手段表征了样品的微观结构、形貌和光学性质；研究表明Ni₂P作为助催化剂，可加速电子空穴对分离，显著提高Bi₂MoO₆的光催化活性，其中当Ni₂P负载率为4%时，TOC去除率为64.28%，降解速率为纯Bi₂MoO₆的2倍，且将Ni₂P/Bi₂MoO₆复合催化剂循环利用3次后，同实验条件下降解率为94%，证明复合催化剂稳定性好.

The preparation and visible light catalytic activity of Ni2P/ Bi2MoO6 composites

Flower-like Bi₂MoO₆ and sheet-like Ni₂P were prepared, and were combined by grinding, hydrothermal, and ultrasonic methods. The effects of loading method, loading rate, and pH of solution on the degradation of methylene blue (MB) under visible light were investigated. The microstructure, morphology and optical properties of the samples were characterized by XRD, XPS, FTIR, SEM, PL and UV-Vis. The result shows that Ni₂P as a co-catalyst can significantly accelerate the separation of electron-hole pairs and improve the photocatalytic activity of Bi₂MoO₆. When the loading rate of Ni₂P is 4%, TOC removal rate is 64.28%, which is two-fold higher than that of pure Bi₂MoO₆. After recycling the Ni₂P / Bi₂MoO₆ composite catalyst 3 times, the degradation rate is 94% under the same experimental conditions, which proves that the composite photocatalyst has good stability.