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WO3/Conducting Polymer Heterojunction Photoanodes for Efficient and Stable Photoelectrochemical Water Splitting

Author(s)
Jeon, DasomKim, NayeongBae, SanghyunHan, YujinRyu, Jungki
Issued Date
2018-03
DOI
10.1021/acsami.7b19203
URI
https://scholarworks.unist.ac.kr/handle/201301/23807
Fulltext
https://pubs.acs.org/doi/abs/10.1021/acsami.7b19203
Citation
ACS APPLIED MATERIALS & INTERFACES, v.10, no.9, pp.8036 - 8044
Abstract
An efficient and stable heterojunction photoanode for solar water oxidation was fabricated by hybridization of WO3 and conducting polymers (CPs). Organic/inorganic hybrid photoanodes were readily prepared by the electropolymerization of various CPs and the codeposition of tetraruthenium polyoxometalate (Ru4POM) water-oxidation catalysts (WOCs) on the surface of WO3. The deposition of CPs, especially polypyrrole (PPy) doped with Ru4POM (PPy:Ru4POM), resulted in a remarkably improved photoelectrochemical performance by the formation of a WO3/PPy p-n heterojunction and the incorporation of efficient Ru4POM WOCs. In addition, there was also a significant improvement in the photostability of the WO3-based photoanode after the deposition of the PPy:Ru4POM layer due to the suppression of the formation of hydrogen peroxide, which was responsible for corrosion. This study provides insight into the design and fabrication of novel photosynthetic and photocatalytic systems with excellent performance and stability through the hybridization of organic and inorganic materials.
Publisher
AMER CHEMICAL SOC
ISSN
1944-8244
Keyword (Author)
water-splittingphotocatalysisenergy conversionpolyoxometalatesorganic-inorganic hybrid composites
Keyword
WO3/BIVO4 HETEROJUNCTIONTUNGSTEN TRIOXIDETHIN-FILMSCONDUCTING POLYPYRROLECHARGE SEPARATIONWO3OXIDATIONOXYGENDEPOSITIONCATALYST

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