Single-Atom Pd–N3 Sites on Carbon-Deficient g-C3N4 for Photocatalytic H2 Evolution

Liu，Guimei1,2; Lv，Haiqin1,3; Zeng，Yubin2; Yuan，Mingzhe1,3; Meng，Qingguo1,3; Wang，Yuanhao4; Wang，Chuanyi1,2,3

2021-04-01

10.1007/s12209-020-00279-z

Transactions of Tianjin University   影响因子和分区

1006-4982

1995-8196

Photocatalytic hydrogen evolution is an attractive field for future environment-friendly energy. However, fast recombination of photogenerated charges severely inhibits hydrogen efficiency. Single-atom cocatalysts such as Pt have emerged as an effective method to enhance the photocatalytic activity by introduction of active sites and boosting charge separation with low-coordination environment. Herein, we demonstrated a new strategy to develop a highly active Pd single atom in carbon-deficient g-CN with a unique coordination. The single-atom Pd–N sites constructed by oil bath heating and photoreduction process were confirmed by HADDF-STEM and XPS measurements. Introduction of single-atom Pd greatly improved the separation and transportation of charge carriers, leading to a longer lifespan for consequent reactions. The obtained single-atom Pd loaded on the carbon-deficient g–CN showed excellent photocatalytic activity in hydrogen production with about 24 and 4 times higher activity than that of g–CN and nano-sized Pd on the same support, respectively. This work provides a new insight on the design of single-atom catalyst.

Active sites g-C3N4 Hydrogen Pd Photocatalytic Single-atom

EI

英语

其他

20210709934050

Atoms ; Carbon ; Carrier mobility ; Hydrogen production

Gas Fuels:522 ; Semiconducting Materials:712.1 ; Chemical Products Generally:804 ; Atomic and Molecular Physics:931.3

2-s2.0-85100963659

Scopus

1.Shenyang Institute of Automation,Guangzhou,Chinese Academy of Science,Guangzhou,511400,China
2.Hubei Key Laboratory of Accoutrement Technique in Fluid Machinery and Power Engineering,Hubei,430072,China
3.Guangdong Engineering Technology Research Center for Environmental Purification and Functional Materials,Guangzhou,511400,China
4.SUSTech Engineering Innovation Center,School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518000,China

Liu，Guimei,Lv，Haiqin,Zeng，Yubin,等. Single-Atom Pd–N3 Sites on Carbon-Deficient g-C3N4 for Photocatalytic H2 Evolution[J]. Transactions of Tianjin University,2021,27(2):139-146.

Liu，Guimei.,Lv，Haiqin.,Zeng，Yubin.,Yuan，Mingzhe.,Meng，Qingguo.,...&Wang，Chuanyi.(2021).Single-Atom Pd–N3 Sites on Carbon-Deficient g-C3N4 for Photocatalytic H2 Evolution.Transactions of Tianjin University,27(2),139-146.

Liu，Guimei,et al."Single-Atom Pd–N3 Sites on Carbon-Deficient g-C3N4 for Photocatalytic H2 Evolution".Transactions of Tianjin University 27.2(2021):139-146.