Preparation of photocatalytic materials MIL-125(Ti)/BiOI and photocatalytic performance study

doi:10.3969/j.issn.1000-5641.2019.01.011

Abstract

Abstract: With pentahydrate bismuth nitrate (Bi(NO₃)₃5H₂O), potassium iodide (KI), and MIL-125(Ti) as raw materials, ethylene glycol as solvent, and citric acid as the structural inducer, heterojunction structure light catalyst MIL-125(Ti)/BiOI was prepared through one-step coprecipitation. The effect of photocatalytic degradation of Rhodamine B in visible light was also tested. By a series of measurements, including XRD, PL, SEM, BET and UV-Vis, we researched the relationships between structure, morphology, spectrum and the catalytic performance of the catalyst. Furthermore, the catalytic mechanism was analysized via energy band structure. The results indicated that by adjusting the ratio of Ti/Bi, MIL-125(Ti)/BiOI has a good degradation effect on Rhodamine B under visible light radiation, which is stable and can be applied to industrial applications.

Key words: MIL-125(Ti), BiOI, visible light, Rhodamine B, photocatalytic degradation

CLC Number:

O469

HUANG Xian-zhi, PIAO Xian-qing, CAI Ya-guo. Preparation of photocatalytic materials MIL-125(Ti)/BiOI and photocatalytic performance study[J]. Journal of East China Normal University(Natural Sc, 2019, 2019(1): 93-104,114.

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