Solar-Driven Photoelectrochemical Water Oxidation over an n-Type Lead-Titanium Oxyfluoride Anode

Autor:	Yosuke Ebato, Naoki Hirayama, Kengo Oka, Hiroko Nakata, Ryutaro Kamata, Kosaku Kato, Haruki Wakayama, Shunta Nishioka, Tomoki Kanazawa, Hiromu Kumagai, Kazuhiko Maeda, Akira Yamakata
Rok vydání:	2019
Předmět:	Photocurrent Chemistry Band gap General Chemistry Electrolyte 010402 general chemistry Photochemistry 01 natural sciences Biochemistry Catalysis 0104 chemical sciences Overlayer Anode Photoexcitation Colloid and Surface Chemistry Water splitting Faraday efficiency
Zdroj:	Journal of the American Chemical Society. 141:17158-17165
ISSN:	1520-5126 0002-7863
DOI:	10.1021/jacs.9b06570
Popis:	Mixed-anion compounds (e.g., oxynitrides and oxysulfides) are potential candidates as photoanodes for visible-light water oxidation, but most of them suffer from oxidative degradation by photogenerated holes, leading to low stability. Here we show an exceptional example of a stable, mixed-anion water-oxidation photoanode that consists of an oxyfluoride, Pb2Ti2O5.4F1.2, having a band gap of ca. 2.4 eV. Pb2Ti2O5.4F1.2 particles, which were coated on a transparent conductive glass (FTO) support and were subject to postdeposition of a TiO2 overlayer, generated an anodic photocurrent upon band gap photoexcitation of Pb2Ti2O5.4F1.2 (λ
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad4ecedaf1f4ecb841aed671574b1898 https://doi.org/10.1021/jacs.9b06570 Zobrazit plný text záznamu