Laser solid-phase synthesis of single-atom catalysts

Yudong Peng; Jianyun Cao; Yang Sha; Wenji Yang; Lin Li; Zhu Liu

doi:10.1038/s41377-021-00603-9

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Laser solid-phase synthesis of single-atom catalysts

Articles

- Laser solid-phase synthesis of single-atom catalysts
- Light: Science & Applications Vol. 10, Issue 9, Pages: 1736-1749(2021)
- Affiliations：
  
  1.Department of Materials, School of Natural Sciences, The University of Manchester, Manchester, M13 9PL, UK
  2.National Graphene Institute, The University of Manchester, Manchester, M13 9PL, UK
  3.Laser Processing Research Centre, Department of Mechanical, Aerospace and Civil Engineering, The University of Manchester, Manchester, M13 9PL, UK
- Author bio：
  
  Zhu Liu (zhu.liu@manchester.ac.uk)
- Funds：
- DOI：10.1038/s41377-021-00603-9
  CLC：
- Published：30 September 2021，
  
  Published Online：18 August 2021，
  
  Received：22 January 2021，
  
  Revised：25 June 2021，
  
  Accepted：19 July 2021
- Accepted：
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Peng Y. D. et al. Laser solid-phase synthesis of single-atom catalysts. Light: Science & Applications, 10, 1736-1749 (2021).
DOI：

Peng Y. D. et al. Laser solid-phase synthesis of single-atom catalysts. Light: Science & Applications, 10, 1736-1749 (2021). DOI： 10.1038/s41377-021-00603-9.

摘要

Abstract

Single-atom catalysts (SACs) with atomically dispersed catalytic sites have shown outstanding catalytic performance in a variety of reactions. However

the development of facile and high-yield techniques for the fabrication of SACs remains challenging. In this paper

we report a laser-induced solid-phase strategy for the synthesis of Pt SACs on graphene support. Simply by rapid laser scanning/irradiation of a freeze-dried electrochemical graphene oxide (EGO) film loaded with chloroplatinic acid (H

PtCl

)

we enabled simultaneous pyrolysis of H

PtCl

into SACs and reduction/graphitization of EGO into graphene. The rapid freezing of EGO hydrogel film infused with H

PtCl

solution in liquid nitrogen and the subsequent ice sublimation by freeze-drying were essential to achieve the atomically dispersed Pt. Nanosecond pulsed infrared (IR; 1064 nm) and picosecond pulsed ultraviolet (UV; 355 nm) lasers were used to investigate the effects of laser wavelength and pulse duration on the SACs formation mechanism. The atomically dispersed Pt on graphene support exhibited a small overpotential of −42.

3 mV at −10 mA cm

−2

for hydrogen evolution reaction and a mass activity tenfold higher than that of the commercial Pt/C catalyst. This method is simple

fast and potentially versatile

and scalable for the mass production of SACs.

关键词

Keywords

references

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