Band alignment modulations of metal-semiconductor system for enhanced charge separation directly related to a photocatalytic performance

被引：2

作者：

Umh, Ha Nee ^{[1
]}

Song, Chyan Kyung ^{[1
]}

Lee, Su Young ^{[1
]}

Bae, Seongjun ^{[1
]}

Kim, Tae Yong ^{[1
]}

Kim, Yong Hwa ^{[1
]}

Joo, Ji Bong ^{[2
]}

Yi, Jongheop ^{[1
]}

机构：

[1] Seoul Natl Univ, Sch Chem & Biol Engn, World Class Univ Program Chem Convergence Energy, Inst Chem Proc, Seoul 08826, South Korea

[2] Konkuk Univ, Dept Chem Engn, Seoul 05029, South Korea

来源：

CATALYSIS COMMUNICATIONS | 2020年 / 136卷 / 136期

基金：

新加坡国家研究基金会;

关键词：

Fhotocatalyst; Metal-semiconductor interface; Charge separation; Hole transfer; Hot electron transfer; WORK FUNCTION; DOPED TIO2; WATER; NANOPARTICLES; DRIVEN; OXIDATION; RUTILE; SIZE; DEGRADATION; DEPENDENCE;

D O I：

10.1016/j.catcom.2019.105921

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：

This work focuses on the charge state modulation from a controllable metal-semiconductor energetic alignment. Pt nanoparticles on rutile TiO2 are positively charged under visible light condition by synergetic charge separation. The extent and rate of charge separation are further enhanced via increased band bending at the TiO2 interface, which was induced by modulating the fermi level of Pt nanoparticles. Performance of photocatalytic oxidation was deeply related to the charge separation rate.

引用

页数：5

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