Poliukhova, Valeriia Lei, Wenwei Khan, Sovann Tae, Eunju Lee Suzuki, Norihiro Terashima, Chiaki Fujishima, Akira Katsumata, Ken-Ichi 조소혜 2024-01-19T12:31:46Z 2024-01-19T12:31:46Z 2022-04-14 2022-03 2073-4344 https://pubs.kist.re.kr/handle/201004/115546 The separation of nanoparticles from a solution-based photocatalytic reaction is a significant problem in practical applications. To address the issue, we developed a new photocatalyst composite based on ZnO-ZnS heterojunction (ZnOS) embedded in polyvinyl alcohol (PVA) hydrogel, which showed satisfactory results for photocatalyst recycling. PVA-ZnOS composite hydrogel was fabricated by freezing-induced gelation, which enabled the encapsulation of ZnOS nanoparticles into polymeric matrices. PVA hydrogel served as a promising candidate in photocatalytic applications due to its excellent properties such as high transparency, porosity, hydrophilicity, and stability under ultraviolet (UV) light. PVA-ZnOS hydrogel showed worthy activity in H-2 generation from Na2S/Na2SO3 aqueous solution under UV radiation with a production rate of 18.8 mu mol center dot h(-1). PVA-ZnOS composite hydrogel is a separation-free photocatalyst, which is prospective in a solution-based photocatalytic reactor. English Multidisciplinary Digital Publishing Institute (MDPI) ZnO/ZnS-Polyvinyl Alcohol Hydrogel for Photocatalytic H-2-Generation Article 10.3390/catal12030272 1 Catalysts, v.12, no.3 Catalysts 12 3 Y scie scopus 000775577900001 2-s2.0-85125385773 Chemistry, Physical Chemistry Article H-2 PRODUCTION WATER NANOFIBERS DEGRADATION ZNO FABRICATION NANOSHEETS REDUCTION ZnO-ZnS heterojunction PVA hydrogel photocatalyst H-2 generation catalyst immobilization photocatalytic recycling