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. 2021 Nov 2;11(56):35326-35330.
doi: 10.1039/d1ra05957b. eCollection 2021 Oct 28.

Photocatalytic cascade reactions and dye degradation over CdS-metal-organic framework hybrids

Shu-Rong Li  1 , Feng-Di Ren  1 , Lin Wang  1 , Yu-Zhen Chen  1
Affiliations

Photocatalytic cascade reactions and dye degradation over CdS-metal-organic framework hybrids

Shu-Rong Li et al. RSC Adv. .

Abstract

Two bifunctional CdS-MOF composites have been designed and fabricated. The hybrids exhibited synergistic photocatalytic performance toward two cascade reactions under visible light integrating photooxidation activity of CdS and Lewis acids/bases of the MOF. The composite further promoted the photodegradation of dyes benefiting from effective electron transfer between the MOF and CdS.

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Conflict of interest statement

There are no conflicts to declare.

Figures

Scheme 1
Scheme 1. Schematic illustration for the preparation of CdS/MOF hybrid.
Fig. 1
Fig. 1. (a) PXRD patterns of simulated NH2-MIL-125, as-synthesized NH2-MIL-125, and CdS/NH2-MIL-125. (b) N2 sorption isotherms of NH2-MIL-125 and 15 wt% CdS/NH2-MIL-125 at 77 K. (c) SEM and (d) TEM images of 15 wt% CdS/NH2-MIL-125 and (inset in d) the corresponding size distribution of CdS NPs.
Fig. 2
Fig. 2. Plots of photodegradation rate of (a) methyl violet, (b) safranine T and (c) coomassie brilliant blue R250 by catalysts (C0 is the initial concentration and C is the concentration at any given time of the dye). (d) UV-Vis absorption spectra for methyl violet degradation by CdS/NH2-MIL-125. (e) The changed solution color as the MV degradation proceeds using CdS/NH2-MIL-125.
Fig. 3
Fig. 3. (a) UV-Vis DRS and (b) photocurrent test of samples. (c) Tauc plots of samples. (d) Mott–Schottky plots of CdS and NH2-MIL-125 in a 0.5 M Na2SO4 aqueous solution.
See this image and copyright information in PMC

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