Non-Metal Single-Phosphorus-Atom Catalysis of Hydrogen Evolution.
Non-metal-based single-atom catalysts (SACs) offer low cost, simple synthesis methods, and effective regulation for substrates. Herein, we developed a simplified pressurized gas-assisted process, and report the first non-metal single-atom phosphorus with atomic-level dispersion on unique single-crystal Mo2 C hexagonal nanosheet arrays with a (001) plane supported by carbon sheet (SAP-Mo2 C-CS). The SAP-Mo2 C-CS is structurally stable and shows exceptional electrocatalytic activity for the hydrogen evolution reaction (HER). A so-called high-active "window" based on the active sites of P atoms and their adjacent Mo atoms gives a ΔGH* close to zero for hydrogen evolution, which is the most ideal ΔGH* reported so far. Meanwhile, the moderate d-band center value of SAP-Mo2 C-CS can be also used as an ideal standard value to evaluate the HER performance in non-metal-based SACs.
['Fu|Weiwei|W|', 'Wang|Yanwei|Y|', 'Tian|Wu|W|', 'Zhang|Huijuan|H|', 'Li|Jian|J|', 'Wang|Shuangyin|S|', 'Wang|Yu|Y|http://orcid.org/0000-0003-2883-1087']
single-atom catalyst (SAC) phosphorus hydrogen evolution reaction adsorption high-active window