1. Metal-organic frameworks incorporated with C3N4: A visible light enhanced platform for degradation of polybromodiphenyl ethers.
- Author
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Emmanuel, Akese, Yang, Meiying, Xu, Tingting, Shen, Qi, and Sun, Chunyan
- Subjects
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VISIBLE spectra , *METAL-organic frameworks , *PHOTOCATALYSTS , *POLYBROMINATED diphenyl ethers , *ETHERS , *CHARGE carriers , *BROMINE - Abstract
A series of nano-photocatalysts metal-organic frameworks (MOFs)/graphitic carbon nitride (CN) (named MOFCN- x) with high activity have been synthesized by in-situ growth method. Under visible light irradiation, MOFCN- x hybrids show enhanced photocatalytic activity for the debromination of polybromodiphenyl ethers (PBDEs) compared with CN. Among all the hybrids, MOFCN-2 shows the highest reaction rate, which is 3.3 times as high as that in CN. MOFCN- x photocatalysts own stable visible light activity after recycled experiment. It indicates that a moderate amount of MOFs in MOFCN- x can largely enhance the photocatalytic ability by improved visible light absorption, larger specific surface area and better photo-generated charge carriers separation and transfer capabilities. More interestingly, the debromination pathway of PBDEs by MOFCN- x shows obvious selectivity compared with pure CN that bromines at meta -positions are much more susceptible than those at the para - and ortho -positions. The possible photoreductive mechanism has been proposed. This study shows that nanocomposite MOFCN can be an excellent candidate for dealing with halogen pollutants by solar-driven. [Display omitted] [ABSTRACT FROM AUTHOR]
- Published
- 2023
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