PMID- 35121512 OWN - NLM STAT- MEDLINE DCOM- 20220308 LR - 20220308 IS - 1095-7103 (Electronic) IS - 0021-9797 (Linking) VI - 614 DP - 2022 May 15 TI - Rational design of ZnO-zeolite imidazole hybrid nanoparticles with reduced charge recombination for enhanced photocatalysis. PG - 538-546 LID - S0021-9797(22)00100-X [pii] LID - 10.1016/j.jcis.2022.01.086 [doi] AB - Semiconducting zinc oxide nanoparticles (ZnO NPs) hold great potential as photocatalysts in wastewater treatment because of their favorable bandgap and cost-effectiveness. Unfortunately, ZnO NPs usually show rapid charge recombination that limits their photocatalytic efficacy significantly. Herein, we report a facile way of modifying ZnO NPs with zeolite imidazole framework-8 (ZIF8). A synergy between the two components may tackle the drawback of fast charge recombination for pristine ZnO NPs. Improved performance of photocatalytic degradation of methylene blue (MB) is confirmed by comparing with pristine ZnO and ZIF8 as the catalysts. The ZIF8 in the composite serves as a trap for photogenerated electrons, thus reducing the rate of charge recombination to enhance the photocatalysis rate. In addition, the hybridization process suppresses the aggregation of ZnO NPs, providing a large surface area and a greater number of active sites. Moreover, a small shift in the absorption band of ZnO@ZIF8 (10) NPs towards higher wavelength, also witnessed a little contribution towards enhanced photocatalytic properties. Mechanistic studies of the photocatalytic process of MB using ZnO@ZIF8 NPs catalyst reveal that hydroxyl radicals are the major reactive oxygen species. The facile hybridization of ZnO with ZIF8 provides a strategy for developing new photocatalysts with wide application potential. CI - Copyright (c) 2022 Elsevier Inc. All rights reserved. FAU - Fatima, Hira AU - Fatima H AD - Western Australia School of Mines: Minerals, Energy and Chemical Engineering (WASM-MECE), Curtin University, Perth, Western Australia 6102, Australia. FAU - Azhar, Muhammad Rizwan AU - Azhar MR AD - School of Engineering, Edith Cowan University, 270 Joondalup Drive, Joondalup, Western Australia 6027, Australia. FAU - Zhong, Yijun AU - Zhong Y AD - Western Australia School of Mines: Minerals, Energy and Chemical Engineering (WASM-MECE), Curtin University, Perth, Western Australia 6102, Australia. Electronic address: yijun.zhong@curtin.edu.au. FAU - Arafat, Yasir AU - Arafat Y AD - Western Australia School of Mines: Minerals, Energy and Chemical Engineering (WASM-MECE), Curtin University, Perth, Western Australia 6102, Australia. FAU - Khiadani, Mehdi AU - Khiadani M AD - School of Engineering, Edith Cowan University, 270 Joondalup Drive, Joondalup, Western Australia 6027, Australia. FAU - Shao, Zongping AU - Shao Z AD - Western Australia School of Mines: Minerals, Energy and Chemical Engineering (WASM-MECE), Curtin University, Perth, Western Australia 6102, Australia; State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China. Electronic address: zongping.shao@curtin.edu.au. LA - eng PT - Journal Article DEP - 20220117 PL - United States TA - J Colloid Interface Sci JT - Journal of colloid and interface science JID - 0043125 RN - 0 (Imidazoles) RN - 1318-02-1 (Zeolites) RN - SOI2LOH54Z (Zinc Oxide) SB - IM MH - Imidazoles MH - *Nanoparticles MH - Recombination, Genetic MH - *Zeolites MH - *Zinc Oxide/chemistry OTO - NOTNLM OT - Charge recombination OT - Photocatalysis OT - Photocatalyst OT - Semiconductor-zeolite imidazole nanoparticle OT - Wastewater treatment COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2022/02/06 06:00 MHDA- 2022/03/09 06:00 CRDT- 2022/02/05 05:46 PHST- 2021/11/15 00:00 [received] PHST- 2022/01/12 00:00 [revised] PHST- 2022/01/13 00:00 [accepted] PHST- 2022/02/06 06:00 [pubmed] PHST- 2022/03/09 06:00 [medline] PHST- 2022/02/05 05:46 [entrez] AID - S0021-9797(22)00100-X [pii] AID - 10.1016/j.jcis.2022.01.086 [doi] PST - ppublish SO - J Colloid Interface Sci. 2022 May 15;614:538-546. doi: 10.1016/j.jcis.2022.01.086. Epub 2022 Jan 17.