Periodically Ordered Nanoporous Perovskite Photoelectrode for Efficient Photoelectrochemical Water Splitting

被引：89

作者：

Shi, Li ^{[1
]}

Zhou, Wei ^{[3
]}

Li, Zhao ^{[1
,2
]}

Koul, Supriya ^{[2
]}

Kushima, Akihiro ^{[2
]}

Yang, Yang ^{[1
,2
]}

机构：

[1] Univ Cent Florida, NanoSci Technol Ctr, 4000 Cent Florida Blvd, Orlando, FL 32816 USA

[2] Univ Cent Florida, Dept Mat Sci & Engn, 4000 Cent Florida Blvd, Orlando, FL 32816 USA

[3] Tianjin Univ, Sch Sci, Dept Appl Phys, Tianjin 300354, Peoples R China

来源：

ACS NANO | 2018年 / 12卷 / 06期

关键词：

perovskite; oxygen vacancy; core-shell structure; plasmonic; photoelectrochemical water splitting; NANOTUBE ARRAYS; HYDROGEN-PRODUCTION; GOLD NANOPARTICLES; CHARGE SEPARATION; OXYGEN VACANCIES; DOPED SRTIO3; THIN-FILMS; NANOCRYSTALS; SEMICONDUCTOR; PHOTOCURRENT;

D O I：

10.1021/acsnano.8b03940

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Nonmetallic materials with localized surface plasmon resonance (LSPR) have a great potential for solar energy harvesting applications. Exploring nonmetallic plasmonic materials is desirable yet challenging. Herein, an efficient nonmetallic plasmonic perovskite photo electrode, namely, SrTiO3, with a periodically ordered nanoporous structure showing an intense LSPR in the visible light region is reported. The crystalline-core@amorphous-shell structure of the SrTiO3 photoelectrode enables a strong LSPR due to the high charge carrier density induced by oxygen vacancies in the amorphous shell. photoelectrode was observed by oxidation/reduction treatment The reversible tunability in LSPR of the SrTiO3 and incident angle adjusting. Such a nonmetallic plasmonic SrTiO3 photoelectrode displays a dramatic plasmon-enhanced photoelectrochemical water splitting performance with a photocurrent density of 170.0 mu A cm(-2) under visible light illumination and a maximum incident photon-to-current-conversion efficiency of 4.0% in the visible light region, which are comparable to the state-of-the-art plasmonic noble metal sensitized photoelectrodes.

引用

页码：6335 / 6342

页数：8

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