Interfacial engineering boosting charge extraction for efficient photocatalytic hydrogen evolution

被引：18

作者：

Dai, Fangxu ^{[1
]}

Guo, Zhiying ^{[1
]}

Zhao, Weijie ^{[2
,3
]}

Li, Zhenjiang ^{[4
]}

Xing, Jun ^{[1
]}

Wang, Lei ^{[1
,5
]}

机构：

[1] Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, Key Lab Ecochem Engn, Minist Educ, Qingdao 266042, Peoples R China

[2] Southeast Univ, Frontiers Sci Ctr Mobile Informat Commun & Secur, Sch Phys, Nanjing 211189, Peoples R China

[3] Purple Mt Labs, Nanjing 211111, Peoples R China

[4] Qingdao Univ Sci & Technol, Coll Mat Sci & Engn, Qingdao 266042, Peoples R China

[5] Qingdao Univ Sci & Technol, Coll Environm & Safety Engn, Shandong Engn Res Ctr Marine Environm Corros & Saf, Qingdao 266042, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2022年 / 450卷

基金：

中国国家自然科学基金;

关键词：

Charge extraction; Co-catalyst; Cu interlayer; Photocatalytic; HER;

D O I：

10.1016/j.cej.2022.138015

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In heterostructure photocatalyst, metal-support interaction plays a key role in determining the photocatalytic reaction, which is rarely studied due to its complicated mechanism involving interfacial bonding, internal electric field, and charge transfer etc. Here we report an interfacial engineering to promote the photocatalytic hydrogen evolution of the model photocatalyst Pt/TiO2. A stable oxidized Cu+ layer was inserted as an interlayer between Pt nanoparticles and TiO2 support, which boosts the efficiency of photoinduced charge extraction and regulates the surface charge state of the photocatalyst. The synthesized photocatalyst Pt/Cu/TiO2 exhibits highly efficient hydrogen evolution of 1 L g(-1)h(- 1), which is 63% higher than the photocatalyst Pt/TiO2. This charge extraction strategy is also evidenced on photocatalysts Pt/(Rh, Co or Ni)/TiO2. Our findings not only provide insight into interfacial interaction in photocatalyst, but also offer effective guidelines for the design and fabrication of high-performance photocatalysts.

引用

页数：7

共 32 条

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