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In situ preparation of Ag 3 VO 4 /MOFs composites with enhanced visible-light-driven catalytic activity
Journal of Nanoparticle Research ( IF 2.1 ) Pub Date : 2019-12-02 , DOI: 10.1007/s11051-019-4704-1
Boyin Zhai , Ying Chen , Yuning Liang

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 (SBET = 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 (SBET = 89.734 m2/g, Eg = 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



中文翻译:

原位制备具有增强的可见光催化活性的Ag 3 VO 4 / MOFs复合材料

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

更新日期:2019-12-02
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