In this work, we have fabricated a novel Ag₃VO₄/MIL-125(Ti) photocatalyst by in situ deposition method, which is characterized by XRD, SEM, TEM, FT-IR, XPS, TG, BET, UV-Vis DRS, and PL. The photocatalytic degradation activity of as-prepared materials was studied via decomposing Rh B, and the possible mechanism of photocatalytic degradation was put forward. The result displayed that the specific surface area of a series of composites is larger than that of the single Ag₃VO₄ (S_BET = 9.374 m²/g), and the photocatalytic efficiency is much higher than that of pure Ag₃VO₄ and MIL-125(Ti). Among them, the photocatalytic activity of AM-3 composite (S_BET = 89.734 m²/g, E_g = 2.13 eV) is the highest, about 3.7 times and 13.1 times of pure Ag₃VO₄ and MIL-125(Ti), respectively. At the same time, the Ag₃VO₄/MIL-125(Ti) composite can maintain a stable photocatalytic activity and structure after four cycles.

The possible route of photoelectron generation and transport in the Ag₃VO₄/MIL-125(Ti) composite

本文通过原位沉积法制备了一种新型的Ag ₃ VO ₄ / MIL-125（Ti）光催化剂，其特征在于XRD，SEM，TEM，FT-IR，XPS，TG，BET，UV-Vis DRS和PL。通过分解Rh B研究了所制备材料的光催化降解活性，并提出了可能的光催化降解机理。结果表明，一系列复合材料的比表面积大于单一Ag ₃ VO _{4的比表面积}（S _BET  = 9.374 m ² / g），光催化效率远高于纯Ag ₃ VO _4。和MIL-125（Ti）。其中，AM-3复合物（S _BET  = 89.734 m ² / g，E _g  = 2.13 eV）的光催化活性最高，约为纯Ag ₃ VO ₄和MIL-125（Ti）的3.7倍和13.1倍。， 分别。同时，Ag ₃ VO ₄ / MIL-125（Ti）复合材料在四个循环后可以保持稳定的光催化活性和结构。

Ag ₃ VO ₄ / MIL-125（Ti）复合材料中光电子产生和传输的可能途径