Carbon-supported catalysts with atomically dispersed metal sites for oxygen electroreduction: present and future perspectives

Abstract

Carbon-supported catalysts with atomically dispersed metal sites, also known as “single-atom catalysts (SACs)”, have attracted enormous attention for oxygen reduction reaction (ORR) due to their theoretical maximal atom utilization and...

Research progress of asymmetrically coordinated single-atom catalysts for electrocatalytic reactions

“…76–78 Among them, the dopant atoms used in the reported work mainly include N, S, P, B, O, I, Cl and so on. 9,79–81 As a highly electronegative atom with a lone pair of electrons, N is incorporated into carbon materials to form M–N x structure catalysts. This strategy has been extensively studied as described in Section 2.1.…”

Highly exposed surface pore-edge FeNx sites for enhanced oxygen reduction performance in Zn-air batteries

“…12,13 Therefore, increasing the density of FeN x sites is an efficient method to improve catalytic activity. 14,15…”

“…12,13 Therefore, increasing the density of FeN x sites is an efficient method to improve catalytic activity. 14,15 To date, the content of Fe atoms in most Fe-N-C catalysts has reached more than 2.0 wt% by optimization of the combinations of precursor and the temperature of carbonization. 16 However, a lot of FeN x sites are located and buried within the carbon matrix, which is not involved in the ORR process.…”

Fe Single‐Atom Catalyst for Efficient and Rapid Fenton‐Like Degradation of Organics and Disinfection against Bacteria

“…[31,40] Our previous study has demonstrated that a catalyst with isolated single Fe atoms of Fe-N 4 coordination anchored on N-doped porous carbon (Fe SA/NPCs) possesses superior catalytic activity on oxygen reduction reaction (ORR). [41,42] Furthermore, other studies have also shown that anchoring single atoms of transition metals on N-doped carbon substrates can dramatically improve the degradation of bisphenol A (BPA). [43][44][45] Hence, it is envisioned that SACs of transition metals on carbonaceous substrates can also function in Fenton-like process, which can be used in pollutant degradation and sterilization.…”