N-Doped carbon dots: a metal-free co-catalyst on hematite nanorod arrays toward efficient photoelectrochemical water oxidation

被引：86

作者：

Huang, Xueni ^{[1
]}

Yang, Libin ^{[1
]}

Hao, Shuai ^{[1
]}

Zheng, Baozhan ^{[1
]}

Yan, Lei ^{[2
]}

Qu, Fengli ^{[3
]}

Asiri, Abdullah M. ^{[4
]}

Sun, Xuping ^{[1
]}

机构：

[1] Sichuan Univ, Coll Chem, Chengdu 610064, Sichuan, Peoples R China

[2] Southwest Univ Polit Sci & Law, Sch Criminal Invest, Chongqing 401120, Peoples R China

[3] Qufu Normal Univ, Coll Chem & Chem Engn, Qufu 273165, Shandong, Peoples R China

[4] King Abdulaziz Univ, Dept Chem, Jeddah 21589, Saudi Arabia

来源：

INORGANIC CHEMISTRY FRONTIERS | 2017年 / 4卷 / 03期

关键词：

VISIBLE-LIGHT IRRADIATION; ATOMIC LAYER DEPOSITION; QUANTUM DOTS; EVOLUTION CATALYST; SOLAR-CELLS; TIO2; NANOPARTICLES; PHOTOANODES; EMISSION; OXYGEN;

D O I：

10.1039/c6qi00517a

中图分类号：

O61 [无机化学];

学科分类号：

070301 [无机化学];

摘要：

In this communication, we demonstrate the use of N-doped carbon dots (N-CDs) as a co-catalyst for hematite (alpha-Fe2O3) nanorod arrays on a Ti sheet for photoelectrochemical water oxidation. Under simulated light irradiation, the photocurrent density of the resulting N-CDs@alpha-Fe2O3/Ti as a photoanode exhibits a 3.4 times increase with a 280 mV cathode shift of the onset potential relative to that of pristine alpha-Fe2O3/Ti, with excellent photostability. The up-conversion fluorescent properties of N-CDs enable the absorption of longer wavelength irradiation with emission of short wavelength light to excite alpha-Fe2O3, leading to the generation of more electron-hole pairs.

引用

页码：537 / 540

页数：4

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