Abstract
The BiOI/NH2-MIL-125(Ti) composite photocatalyst with excellent photocatalytic performance was prepared by the solvothermal method. For the BiOI/NH2-MIL-125(Ti) (BNMT) system, the contents of NH2-MIL-125(Ti) in BNMT-4, BNMT-5, BNMT-7, BNMT-9, and BNMT-10 were 4 wt %, 5 wt %, 7 wt %, 9 wt %, and 10 wt %, respectively. XRD, XPS, SEM, and TEM characterizations indicated that BiOI/NH2-MIL-125(Ti) was successfully prepared. Brunauer, Emmett, and Teller (BET) and UV–vis diffuse reflectance spectra photoelectrochemical analysis indicated that BNMT-9 can make the specific surface area and photo absorption region larger than BiOI. In addition, the separation efficiency of photogenerated carriers was improved, and the recombination efficiency was reduced. The degradation percentages of Rhodamine B (RhB) and p-chlorophenol (P-CP) reached 99% and 90% over BNMT-9 under visible light irradiation. Additionally, the catalysts had high stability. The results of the active spices trapping experiments test indicated that h+ was the main active species. The possible degradation mechanism was proposed.
Highlights
Environmental pollution is one of the main problems of sustainable development in the world
The results showed that ·OH, ·O2 −, and h+ were all active species, among which h+ was the main active species, which played an important role in the BiOI/NH2 -MIL-125(Ti) (BNMT)-9 degradation of Rhodamine B (RhB)
A BiOI/NH2 -MIL-125(Ti) composite photocatalyst was prepared by the solvothermal method
Summary
Environmental pollution is one of the main problems of sustainable development in the world. Chlorophenol is a kind of toxic organic pollutant with liposolubility and bioaccumulation, which has been listed as one of the 68 kinds of water pollutants in China [1,2,3]. Photocatalysis is an effective and environmentally friendly environmental purification technology, which can decompose toxic chlorophenols into CO2 , H2 O, and non-toxic inorganic acids under sunlight. Since the semiconductor photocatalyst has excellent ability to treat organic pollutants, plentiful investigations have been focused on it [8,9,10]. As a new type of non-toxic, stable photocatalyst with strong absorption of visible light, bismuth-based photocatalysts are considered cost-effective, environmentally friendly, and sustained materials. BiOI can degrade many pollutants such as methyl orange (MO), methylene blue (MB), Rhodamine
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
