To enhance the photocatalytic performance of a bismuth vanadate (BiVO₄) photocatalyst, Ag, B, and Eu tri-modified BiVO₄ (ABE-BVO) photocatalysts were successfully prepared through an ethylene glycol sol-gel process and photodeposition. The prepared catalysts were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), high resolution transmission electron microscopy(HRETEM), energy dispersive X-Ray spectroscopy(EDX), X-ray photoelectron (XPS), UV–Vis diffuse reflectance spectra (DRS) and photoluminescence (PL). It was found that the Ag, B, and Eu tri-modified BiVO₄ catalyst displays an apparently elevated photocatalytic performance towards methyl orange (MO) and tetracycline (TC) degradation compared to the as-prepared pure, single or co-modified BiVO₄ samples. A possible mechanism for the improved photocatalytic activity of Ag, B, and Eu tri-modified BiVO₄ was also investigated. The enhanced photocatalytic activity can be mainly ascribed to the improved charge separation and transfer efficiency originating from the synergistic effect of the Ag, B, and Eu introduction.

为了提高钒酸铋（BiVO ₄）光催化剂的光催化性能，通过乙二醇溶胶-凝胶法和光沉积法成功制备了Ag，B和Eu三改性Bi​​VO ₄（ABE-BVO）光催化剂。制备的催化剂的特征在于X射线衍射（XRD），扫描电子显微镜（SEM），高分辨率透射电子显微镜（HRETEM），能量色散X射线光谱（EDX），X射线光电子（XPS），UV-可见漫反射光谱（DRS）和光致发光（PL）。发现Ag，B和Eu三改性的BiVO ₄与所制备的纯，单一或共改性的BiVO ₄样品相比，该催化剂对甲基橙（MO）和四环素（TC）的降解表现出明显提高的光催化性能。还研究了改善Ag，B和Eu三改性Bi​​VO _4的光催化活性的可能机理。增强的光催化活性可以主要归因于源自Ag，B和Eu引入的协同效应而导致的电荷分离和转移效率的提高。