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Title: Effects of Anionic Polymer Modification of Dye‐Sensitized Niobate Photocatalysts on Solar‐Driven Z‐Scheme Overall Water Splitting

Abstract

Pt‐intercalated calcium niobate nanosheets (Pt/HCa 2 Nb 3 O 10 ) sensitized by a Ru(II) complex dye are good photocatalysts for producing H 2 from aqueous solutions containing I as a reversible electron donor. These materials are applicable to Z‐scheme overall water splitting in combination with a WO 3 ‐based O 2 ‐evolving photocatalyst under simulated sunlight. In this work, the effects of anionic polymer modification of the dye‐sensitized nanosheets are examined by adsorbing sodium poly(styrenesulfonate) (PSS), sodium polyacrylate, sodium polymethacrylate (PMA), or sodium poly(4‐styrenesulfonic‐ co ‐maleic acid) onto the dye‐sensitized nanosheet surface. For half‐cell H 2 ‐evolution reaction in the presence of NaI, all of the polymers have a positive impact on the activity under visible light at lower light intensity, whereas only PMA is effective under high light‐intensity condition. For Z‐scheme overall water splitting with PtO x /H‐Cs‐WO 3 , PSS and PMA give almost the same solar‐to‐hydrogen energy conversion efficiencies (0.12% ± 0.01%) under optimized conditions. However, PMA operates better than PSS at relatively low and high NaI concentrations, which are in general disadvantageous for the H 2 ‐ and O 2 ‐evolving components of the Z‐scheme, respectively.

Authors:
 [1];  [1];  [2]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [5]
  1. Department of Chemistry School of Science Tokyo Institute of Technology Ookayama Tokyo 152-8550 Japan
  2. Department of Chemistry University of Pennsylvania Philadelphia PA 19104 USA
  3. Global Zero Emission Research Center (GZR) National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Ibaraki 305-8569 Japan
  4. Department of Chemistry University of Pennsylvania Philadelphia PA 19104 USA, International Center for Materials Nanoarchitectonics (WPI-MANA) National Institute for Materials Science (NIMS) Tsukuba Ibaraki 305-0044 Japan
  5. Department of Chemistry School of Science Tokyo Institute of Technology Ookayama Tokyo 152-8550 Japan, Living Systems Materialogy (LiSM) Research Group International Research Frontiers Initiative (IRFI) Tokyo Institute of Technology Yokohama Kanagawa 226-8502 Japan
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
2007972
Alternate Identifier(s):
OSTI ID: 2007975
Resource Type:
Published Article
Journal Name:
Solar RRL
Additional Journal Information:
Journal Name: Solar RRL Journal Volume: 7 Journal Issue: 23; Journal ID: ISSN 2367-198X
Publisher:
Wiley Blackwell (John Wiley & Sons)
Country of Publication:
Germany
Language:
English

Citation Formats

Yamamoto, Haruka, Nishioka, Shunta, Xiao, Langqiu, Miseki, Yugo, Sayama, Kazuhiro, Mallouk, Thomas E., and Maeda, Kazuhiko. Effects of Anionic Polymer Modification of Dye‐Sensitized Niobate Photocatalysts on Solar‐Driven Z‐Scheme Overall Water Splitting. Germany: N. p., 2023. Web. doi:10.1002/solr.202300629.
Yamamoto, Haruka, Nishioka, Shunta, Xiao, Langqiu, Miseki, Yugo, Sayama, Kazuhiro, Mallouk, Thomas E., & Maeda, Kazuhiko. Effects of Anionic Polymer Modification of Dye‐Sensitized Niobate Photocatalysts on Solar‐Driven Z‐Scheme Overall Water Splitting. Germany. https://doi.org/10.1002/solr.202300629
Yamamoto, Haruka, Nishioka, Shunta, Xiao, Langqiu, Miseki, Yugo, Sayama, Kazuhiro, Mallouk, Thomas E., and Maeda, Kazuhiko. Thu . "Effects of Anionic Polymer Modification of Dye‐Sensitized Niobate Photocatalysts on Solar‐Driven Z‐Scheme Overall Water Splitting". Germany. https://doi.org/10.1002/solr.202300629.
@article{osti_2007972,
title = {Effects of Anionic Polymer Modification of Dye‐Sensitized Niobate Photocatalysts on Solar‐Driven Z‐Scheme Overall Water Splitting},
author = {Yamamoto, Haruka and Nishioka, Shunta and Xiao, Langqiu and Miseki, Yugo and Sayama, Kazuhiro and Mallouk, Thomas E. and Maeda, Kazuhiko},
abstractNote = {Pt‐intercalated calcium niobate nanosheets (Pt/HCa 2 Nb 3 O 10 ) sensitized by a Ru(II) complex dye are good photocatalysts for producing H 2 from aqueous solutions containing I − as a reversible electron donor. These materials are applicable to Z‐scheme overall water splitting in combination with a WO 3 ‐based O 2 ‐evolving photocatalyst under simulated sunlight. In this work, the effects of anionic polymer modification of the dye‐sensitized nanosheets are examined by adsorbing sodium poly(styrenesulfonate) (PSS), sodium polyacrylate, sodium polymethacrylate (PMA), or sodium poly(4‐styrenesulfonic‐ co ‐maleic acid) onto the dye‐sensitized nanosheet surface. For half‐cell H 2 ‐evolution reaction in the presence of NaI, all of the polymers have a positive impact on the activity under visible light at lower light intensity, whereas only PMA is effective under high light‐intensity condition. For Z‐scheme overall water splitting with PtO x /H‐Cs‐WO 3 , PSS and PMA give almost the same solar‐to‐hydrogen energy conversion efficiencies (0.12% ± 0.01%) under optimized conditions. However, PMA operates better than PSS at relatively low and high NaI concentrations, which are in general disadvantageous for the H 2 ‐ and O 2 ‐evolving components of the Z‐scheme, respectively.},
doi = {10.1002/solr.202300629},
journal = {Solar RRL},
number = 23,
volume = 7,
place = {Germany},
year = {Thu Oct 05 00:00:00 EDT 2023},
month = {Thu Oct 05 00:00:00 EDT 2023}
}

Journal Article:
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https://doi.org/10.1002/solr.202300629

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