Controllable synthesis of dual-atom catalysts by a confinement-pyrolysis strategy

doi:10.1016/S1872-2067(23)64436-5

Chinese Journal of Catalysis ›› 2023, Vol. 49: 1-4.DOI: 10.1016/S1872-2067(23)64436-5

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Controllable synthesis of dual-atom catalysts by a confinement-pyrolysis strategy

Jingyi Han, Jingqi Guan^*()

Institute of Physical Chemistry, College of Chemistry, Jilin University, Changchun 130021, Jilin, China

Received:2023-03-06 Accepted:2023-04-02 Online:2023-06-18 Published:2023-06-05
Contact: ^*E-mail: guanjq@jlu.edu.cn

Abstract

Jingyi Han, Jingqi Guan. Controllable synthesis of dual-atom catalysts by a confinement-pyrolysis strategy[J]. Chinese Journal of Catalysis, 2023, 49: 1-4.

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Method	Principle	Advantage	Disadvantage	Ref.
Confinement- pyrolysis strategy	metal atoms are prevented from aggregating through the confined effect of the template	high metal loading and stability; high ratio of diatomic pair; even distribution of active sites; regulable diatomic coordination structure; universal applicability of metal elements	precursor requires careful design; size effect limitation	[4]
Typical high- temperature pyrolysis	high temperature energized breaking/forming chemical bonds to anchor atomic sites	mature technique; universal applicability of metal elements	low metal loading; low ratio of diatomic pair; high aggregation probability; poor dispersion of active sites; severe high temperature synthesis condition	[5]
Double solvent wet chemical method	substrates can trap metal atoms via the hydrophilic/hydrophobic properties of different solvents	simple synthesis procedure; mild experimental condition;	low metal loading; low ratio of diatomic pair; high aggregation probability; poor dispersion of active sites	[6]
ALD technique	the vapor precursors alternately pulse to form the deposition film, which is then chemically adsorbed on the substrate and via self-limiting reactions to form the atomic layer	adjustable parameters; even distribution of active sites; remarkable reproducibility	high cost; special requirements for metal precursors and substrates; limited applicability of metal elements; time-consuming	[2]
Mechanical ball-milling method	sever and reconstruct the chemical bonds of precursors by applying physical stress	potential for large-scale production; low cost; universal applicability of metal elements	low metal loading; low ratio of diatomic pair; high aggregation probability; poor dispersion of active sites	[7]
Electrochemical deposition method	metal atoms can be electrodeposited on electrodes via external current	adjustable applied electrochemical parameters	low metal loading; low ratio of diatomic pair; high aggregation probability; poor dispersion of active sites	[8]
Ultrashort thermal shock route	thermal shock wave with rapid energy input to obtain atomic sites	high metal loading; high ratio of diatomic pair; universal applicability of metal elements	harsh experimental conditions; high cost; not applicable on a large scale	[9]

Method	Principle	Advantage	Disadvantage	Ref.
Confinement- pyrolysis strategy	metal atoms are prevented from aggregating through the confined effect of the template	high metal loading and stability; high ratio of diatomic pair; even distribution of active sites; regulable diatomic coordination structure; universal applicability of metal elements	precursor requires careful design; size effect limitation	[4]
Typical high- temperature pyrolysis	high temperature energized breaking/forming chemical bonds to anchor atomic sites	mature technique; universal applicability of metal elements	low metal loading; low ratio of diatomic pair; high aggregation probability; poor dispersion of active sites; severe high temperature synthesis condition	[5]
Double solvent wet chemical method	substrates can trap metal atoms via the hydrophilic/hydrophobic properties of different solvents	simple synthesis procedure; mild experimental condition;	low metal loading; low ratio of diatomic pair; high aggregation probability; poor dispersion of active sites	[6]
ALD technique	the vapor precursors alternately pulse to form the deposition film, which is then chemically adsorbed on the substrate and via self-limiting reactions to form the atomic layer	adjustable parameters; even distribution of active sites; remarkable reproducibility	high cost; special requirements for metal precursors and substrates; limited applicability of metal elements; time-consuming	[2]
Mechanical ball-milling method	sever and reconstruct the chemical bonds of precursors by applying physical stress	potential for large-scale production; low cost; universal applicability of metal elements	low metal loading; low ratio of diatomic pair; high aggregation probability; poor dispersion of active sites	[7]
Electrochemical deposition method	metal atoms can be electrodeposited on electrodes via external current	adjustable applied electrochemical parameters	low metal loading; low ratio of diatomic pair; high aggregation probability; poor dispersion of active sites	[8]
Ultrashort thermal shock route	thermal shock wave with rapid energy input to obtain atomic sites	high metal loading; high ratio of diatomic pair; universal applicability of metal elements	harsh experimental conditions; high cost; not applicable on a large scale	[9]

Controllable synthesis of dual-atom catalysts by a confinement-pyrolysis strategy

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