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Synergistic photocatalytic dye mitigation and bacterial disinfection using carbon quantum dots decorated dual Z-scheme Manganese Indium Sulfide/Cuprous Oxide/Silver oxide heterojunction

•Novel CQDs decorated MnIn2S4/Cu2O/Ag2O heterojunction were rationally constructed.•Benign designing of dual Z-scheme upgraded separation of photo-generated charges.••O2−, e− and h+ as effective ROS accredited to MO removal and E. coli disinfection.•A recyclable and low energy utilization process wa...

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Bibliographic Details
Published in:Materials letters 2022-04, Vol.313, p.131716, Article 131716
Main Authors: Sharma, Sheetal, Dutta, Vishal, Raizada, Pankaj, Kumar Thakur, Vijay, Saini, Adesh K., Mittal, Divya, Nguyen, Van-Huy, Ahamad, Tansir, Chien Nguyen, Chinh, Young Kim, Soo, Le, Quyet Van, Singh, Pardeep
Format: Article
Language:English
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Summary:•Novel CQDs decorated MnIn2S4/Cu2O/Ag2O heterojunction were rationally constructed.•Benign designing of dual Z-scheme upgraded separation of photo-generated charges.••O2−, e− and h+ as effective ROS accredited to MO removal and E. coli disinfection.•A recyclable and low energy utilization process was accomplished. A novel CQDs decorated MnIn2S4/Cu2O/Ag2O dual Z-scheme tandem hybrid is fabricated via hydrothermal method for MO removal and E. coli disinfection under visible light illumination. CQDs shuttle electrons in CQDs-MnIn2S4/Cu2O/Ag2O interface via dual Z-scheme electron transferal route which lead to upgrade in charge separation and visible light absorption. The Z-scheme hybrid displayed best catalytic inactivation performance of E. coli and degradation of MO which totally disinfect bacteria within 3 h and displayed 98.6% of MO degradation in 70 min in visible light radiation. The unique dual Z-scheme junction supports enhanced redox capabilities, prolong lifespan of photo-excitons, stability, spatial separation and enhanced visible light absorption.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2022.131716