Recent progress in high-loading single-atom catalysts and their applications

Abstract

Achieving single-atom dispersion of metal active components remains daunting. Here, we summarized several key synthesis methods and applications of high-loading SACs, hoping to highlight important research areas for future development.

Recent progress in nickel single-atom catalysts for the electroreduction of CO2 to CO

“…Consequently, some NPs are inevitably present on SACs. 71 Liang et al 54 investigated the effect of Ni NPs on CO 2 RR. They prepared a series of Ni-NG SACs with different amounts of nickel salts as precursors, denoted as Ni 1.11 -NG, Ni 0.37 -NG, and Ni 0.037 -NG.…”

Single atom-decorated transition metal oxide nanomaterials for efficient oxygen evolution reaction

“…Generally, this method includes the following steps: (1) the supports are immersed in the solution of metal precursors; (2) the modified supports are dried or calcined (sometimes this step is absent); and (3) reduction or activation. 110 And this method is applied to almost all supports and metal precursors. 111–114 In the method, the defects, corners, and steps in the supports are the anchoring sites of the isolated metal atoms.…”

Elongated Fe–N–C containing trace atomic Co dopants for high power density PEMFCs

“…12,13 Ever since the first demonstration of metal-nitrogen-carbon (M-N-C) by R. Jasinski in 1964, 14 this type of material has aroused great interest as PGM-free ORR catalysts because of their high efficiency for atomic utilization, high electronic conductivity, and superior ORR catalytic activity. [15][16][17][18][19][20][21] M-N-C catalysts can be derived from various precursor materials. Metal-organic frameworks (MOFs) have gained widespread attention in this context due to their porous nature, high conductivity, expansive specific surface area (SSA), and versatile properties, making them extensively explored.…”