Effective charge separation in site-isolated Pt-nanodot deposited PbTiO3 nanotube arrays for enhanced photoelectrochemical water splitting

被引：34

作者：

Ahn, Chang Won ^{[1
,2
]}

Borse, Pramod H. ^{[3
]}

Kim, Ju Hun ^{[4
]}

Kim, Jae Young ^{[4
]}

Jang, Jum Suk ^{[5
]}

Cho, Chae-Ryong ^{[6
]}

Yoon, Jang-Hee ^{[7
]}

Lee, Byoung-seob ^{[7
]}

Bae, Jong-Seong ^{[7
]}

Kim, Hyun Gyu ^{[7
]}

Lee, Jae Sung ^{[4
]}

机构：

[1] Univ Ulsan, Dept Phys, Ulsan 680749, South Korea

[2] Univ Ulsan, EHSRC, Ulsan 680749, South Korea

[3] Int Adv Res Ctr Powder Met & New Mat, BalapurPO, Hyderabad 500005, Telangana, India

[4] UNIST, Sch Energy & Chem Engn, Ulsan 689798, South Korea

[5] Chonbuk Natl Univ, Safety Environm & Life Sci Inst, Div Biotechnol, Iksan 570752, South Korea

[6] Pusan Natl Univ, Coll Nanosci & Ncazotechnol, Busan 609735, South Korea

[7] Korea Basic Sci Inst, Busan Ctr, Busan 609735, South Korea

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2018年 / 224卷

关键词：

Photoelectrochemical water splitting; PbTiO3; Nanotube arrays; Electron-hole separation; Site isolation; VISIBLE-LIGHT; HYDROGEN-PRODUCTION; SOLAR LIGHT; OXIDES; PHOTOCATALYSTS;

D O I：

10.1016/j.apcatb.2017.11.002

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Highly uniform, self-supported PbTiO3 nanotube arrays are fabricated on a transparent conducting glass by an all solution-based, hard-templating procedure. A new concept of site-isolation has been realized by Pt-sol in-filtration only in the internal core of deposited nanotube arrays and thus physically separating electron and hole reaction sites on inside and external surface of the nanotubes, respectively. The effective charge separation by the site-isolated Pt-nanodot deposited PbTiO3 nanotube photoanode leads to greatly enhanced photocurrent generation and H-2 evolution efficiencies relative to those of the particulate-type photoanode or PbTiO3 nanotube without Pt infiltration in photoelectrochemical water splitting under visible light. The physical site isolation through nano-engineering of the material fabrication is expected to offer an effective strategy for preparation of high-efficiency photoelectrochemical devices.

引用

页码：804 / 809

页数：6

共 22 条

[1] Visible-light photocatalysis in nitrogen-doped titanium oxides [J].