Designing a novel heterostructure AgInS2@MIL-101(Cr) photocatalyst from PET plastic waste for tetracycline degradation

Xuan N. Pham, Van Tai Vu, Hong Van T. Nguyen, T. Thanh Bao Nguyen, Huan V. Doan*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

7 Citations (Scopus)
11 Downloads (Pure)

Abstract

Semiconductor-containing porous materials with a well-defined structure could be unique scaffolds for carrying out selective organic transformations driven by visible light. We herein introduce for the first time a heterostructure of silver indium sulfide (AgInS2) ternary chalcogenide and a highly porous MIL-101(Cr) metal-organic framework (MOF) synthesised from polyethylene terephthalate plastic waste. Our results demonstrate that AgInS2 nanoparticles were uniformly attached to each lattice plane of the octahedral MIL-101(Cr) structure, resulting in a nanocomposite with a high distribution of semiconductors in a porous media. We also demonstrate that the nanocomposite with up to 40% of AgInS2 doping exhibited excellent catalytic activity for tetracycline degradation under visible light irradiation (∼99% tetracycline degraded after 4 h) and predominantly maintained its performance after five cycles. These results could promote a new material circularity pathway to develop new semiconductors that can be used to protect water from further pollution.

Original languageEnglish
Pages (from-to)3600-3608
Number of pages9
JournalNanoscale Advances
Volume4
Issue number17
DOIs
Publication statusPublished - 3 Aug 2022

Bibliographical note

Funding Information:
The authors would like to acknowledge the financial support (No. B2021.MDA-03) from the Ministry of Education and Training of Vietnam. H. V. D. thanks the Royal Society of Chemistry for the Research Fund grant (R20-8172), and the UK Engineering and Physical Sciences Research Council for the Doctoral Prize Fellowship (EP/T517872/1) and the Impact Acceleration Account Funding (A109921-294). XPS experiments were performed at the Cardiff hub of the EPSRC National Facility for X-ray Photoelectron Spectroscopy (‘HarwellXPS’), operated by Cardiff University and UCL under contract no. PR16195. TEM studies were carried out in the Chemical Imaging Facility, at the University of Bristol with equipment funded by EPSRC under Grant “Atoms to Applications” (EP/K035746/1).

Publisher Copyright:
© 2022 RSC.

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