Electrochemically Li-intercalated TiO2 nanoparticles for High performance photocatalytic production of hydrogen

被引：9

作者：

Kim, Mun Kyoung ^{[1
]}

Sim, Woo Hyeong ^{[1
]}

Choi, Miri ^{[2
]}

Lim, Hyungseob ^{[3
]}

Kwon, Youngkook ^{[4
,5
]}

Jeong, Hyung Mo ^{[1
]}

机构：

[1] Sungkyunkwan Univ, Sch Mech Engn, 2066 Seobu Ro, Suwon 16419, South Korea

[2] Korea Basic Sci Inst, Chuncheon Ctr, 1 Gangwondaehak Gil, Chunchon 24341, South Korea

[3] Korea Res Inst Chem Technol, Carbon Resource Inst, 141 Gajeong Ro, Daejeon 34114, South Korea

[4] Ulsan Natl Inst Sci & Technol, Sch Energy & Chem Engn, 50 UNIST Gil, Ulsan 44919, South Korea

[5] Ulsan Natl Inst Sci & Technol, Emergent Hydrogen Technol R&D Ctr, 50 UNIST Gil, Ulsan 44919, South Korea

来源：

CATALYSIS TODAY | 2021年 / 359卷

基金：

新加坡国家研究基金会;

关键词：

Hydrogen evolution; Photocatalyst; Lithiation; TITANIUM-DIOXIDE; DOPED TIO2; LITHIUM INTERCALATION; VISIBLE-LIGHT; ANATASE; CHEMISTRY; INSERTION; PROGRESS; RUTILE; IONS;

D O I：

10.1016/j.cattod.2019.07.058

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Alkali metal ion intercalation into TiO2 photocatalysts is a well-known method for obtaining enhanced photo-catalytic properties. Herein, an effective electrochemical lithiation method is proposed for the synthesis of lithium-intercalated TiO2 nanoparticles (NPs) suitable for high performance photocatalytic production of hydrogen. The electrochemical lithiation of TiO2 induces partial reduction of Ti ions in the crystal lattices, which introduces additional energy states within the band edge of TiO2, resulting in the improved optical properties. Consequently, Li-intercalated TiO2 NPs exhibit almost 60-times improved hydrogen generation activity under both UV and visible light exposure compared to those of commercial TiO2 NPs (P25).

引用

页码：23 / 27

页数：5

共 35 条

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