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Recently, the team of Liu Jian, a researcher of the Nanoreactor and Reaction Engineering Innovation Special Zone Research Group of Dalian Institute of Chemical Physics, Chinese Academy of Sciences, teamed up with the team of Zhou Si, a researcher at Dalian University of Technology, and Liang Ji, a professor at Tianjin University, to modify the carbon support strategy through a single-atom catalyst , To enhance the interaction between the support and the metal particles supported on it, and construct a cobalt single-atom catalyst doped carbon-supported ruthenium (Ru) nanoreactor, which realizes the efficient preparation of green hydrogen in the electrocatalytic hydrogen evolution reaction.
It is a carbon-supported metal nanoreactor.
The regulation of catalyst performance provides new ideas
.
Carbon supports have the advantages of high specific surface area, rich pore structure, strong stability, and good conductivity, and are widely used in the field of electrocatalysis
.
However, the inert surface of the carbon carrier leads to weak interaction with the supported metal nanoparticles, which makes it difficult to effectively control the electronic structure and catalytic activity of the metal nanoparticles, and the ability to inhibit agglomeration is also poor
In response to the above problems, the researchers proposed a strategy to use single-atom doping to adjust the π-conjugated structure of the carbon support to enhance the interaction between it and metal nanoparticles
.
The researchers used iron, cobalt, nickel and other metal single atoms to dope oxygen-containing graphene, and used it as a carrier to support metal Ru nanoparticles to construct a composite nanoreactor containing metal single atoms, carbon substrate and Ru nanoparticles
Jian Liu’s team has been committed to the research and development of carbon-supported metal catalysts for a long time to achieve the precise synthesis of high-activity and high-stability carbon-supported metal catalysts
.
The team constructed egg yolk-egg shell type Pd&ZnO@carbon, Co-CoOx@NC, carbon-loaded metal submicron reactors (Adv.
3
Relevant research results are titled Exceptional Electrochemical HER Performance with Enhanced Electron Transfer between Ru Nanoparticles and Single Atoms Dispersed on Carbon Substrate, published in "Angew.
Chem.
Int.
Ed.
"
.
Su Panpan, an associate researcher of the Nanoreactor and Reaction Engineering Innovation Special Zone Research Group of Dalian Institute of Chemical Technology, is the first author of the paper
The constructed composite nanoreactor shows excellent electrochemical hydrogen evolution performance
