TY - JOUR
T1 - ZnO/ZnS-Polyvinyl Alcohol Hydrogel for Photocatalytic H2-Generation
AU - Poliukhova, Valeriia
AU - Lei, Wenwei
AU - Khan, Sovann
AU - Tae, Eunju Lee
AU - Suzuki, Norihiro
AU - Terashima, Chiaki
AU - Fujishima, Akira
AU - Katsumata, Ken Ichi
AU - Cho, So Hye
N1 - Funding Information:
Funding: This work was supported by National Natural Science Foundation of Hebei province (No. B2021203028) and Hebei Province introduction of overseas students funding project (No. C20210327). It also was financially supported by a Grant-in-Aid for JSPS Fellows (No. 18F18337) from the Japan Society for the Promotion of Science (JSPS). S. Khan would like to thank JSPS for supporting his postdoctoral research (standard-P18337). S.-H. Cho would like to thank Korea National Research Foundation (Grand No. 2020M3H4A3106354) and the KIST Institutional fund (No. 2E31761 and 2E31731) for supporting this work.
Publisher Copyright:
© 2022 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2022/3
Y1 - 2022/3
N2 - 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 H2 generation from Na2 S/Na2 SO3 aqueous solution under UV radiation with a production rate of 18.8 µmol·h−1. PVAZnOS composite hydrogel is a separation-free photocatalyst, which is prospective in a solution-based photocatalytic reactor.
AB - 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 H2 generation from Na2 S/Na2 SO3 aqueous solution under UV radiation with a production rate of 18.8 µmol·h−1. PVAZnOS composite hydrogel is a separation-free photocatalyst, which is prospective in a solution-based photocatalytic reactor.
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U2 - 10.3390/catal12030272
DO - 10.3390/catal12030272
M3 - Article
AN - SCOPUS:85125385773
VL - 12
JO - Catalysts
JF - Catalysts
SN - 2073-4344
IS - 3
M1 - 272
ER -