Platinum Atomic Clusters Embedded in Defects of Anatase/Graphene for Efficient Electro- and Photocatalytic Hydrogen Evolution

被引：36

作者：

Ji, Jiapeng ^{[1
]}

Li, Zeheng ^{[1
]}

Hu, Chenchen ^{[2
]}

Sha, Ying ^{[1
]}

Li, Siyuan ^{[1
]}

Gao, Xuehui ^{[1
]}

Zhou, Shiyu ^{[1
]}

Qiu, Tong ^{[1
]}

Liu, Chenyu ^{[3
]}

Su, Xintai ^{[2
]}

Hou, Yang ^{[1
]}

Lin, Zhan ^{[1
,3
]}

Zhou, Shaodong ^{[1
]}

Ling, Min ^{[1
]}

Liang, Chengdu ^{[1
]}

机构：

[1] Zhejiang Univ, Zhejiang Prov Key Lab Adv Chem Engn Manufacture T, Coll Chem & Biol Engn, Hangzhou 310027, Peoples R China

[2] Xinjiang Univ, Minist Key Lab Oil & Gas Fine Chem, Coll Chem & Chem Engn, Urumqi 830046, Peoples R China

[3] Guangdong Univ Technol, Coll Light Ind & Chem Engn, Guangzhou 510006, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2020年 / 12卷 / 36期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

bifunctional catalyst; platinum atomic clusters; defects of anatase; electro- and photocatalytic; hydrogen evolution; SINGLE-ATOM; LAYER DEPOSITION; CATALYSTS; ELECTROCATALYSTS; NANOPARTICLES; PERFORMANCE; NANOSHEETS; DENSITY; SUPPORT; SYSTEMS;

D O I：

10.1021/acsami.0c06931

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Electro- and photocatalytic hydrogen evolution reaction (e-HER and p-HER) are two promising strategies to produce green hydrogen fuel from water. High intrinsic activity, sufficient active sites, fast charge-transfer capacity, and good optoelectronic properties must be taken into consideration simultaneously in pursuit of an ideal bifunctional catalyst. Here, platinum atomic clusters embedded in defects of TiO2 nanocrystals/graphene nanosheets (Pt-T/G) are reported as a bifunctional catalyst for electro- and photocatalytic hydrogen evolution reaction (e-HER and p-HER). High activity is delivered due to the charge transfer from the other part of the catalyst to the active center (Pt-2-O-4-Ti-x), decreasing the activation energy of the rate-limiting step, which is revealed by synchrotron X-ray absorption spectroscopy, photoelectrochemical measurements, and simulated calculations. In regard to e-HER, it outperforms the commercial 20 wt % Pt/C catalyst by a factor of 17.5 on Pt mass basis, allowing for a 93% reduction in Pt loadings. In regard to p-HER, it achieves photocatalytic efficiency (686.8 mu mol h(-1)) without any attenuation in 9 h.

引用

页码：40204 / 40212

页数：9

共 51 条

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