Porous N, P co-doped carbon-coated ultrafine Co2P nanoparticles derived from DNA: An electrocatalyst for highly efficient hydrogen evolution reaction. (10th October 2021)

• Record Type: Journal Article
• Authors: Li, Xiang; Ma, Jingwen; Luo, Jiaqing; Cheng, Shuting; Gong, Hanzhang; Liu, Jian; Xu, Chunming; Zhao, Zhen; Sun, Yuanqing; Song, Weiyu; Li, Kaixiang; Li, Zhenguo
• Is Part Of: Electrochimica acta. Volume 393(2021)
• Publication Date: 2021-10-10
• Subjects: Ultrafine Co2P nanoparticles -- N, P co-doped carbon -- DNA -- Hydrogen evolution reaction; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2021.139051
• Languages: English
• ISSNs: 0013-4686

Abstract

Highlights: A novel, one-step and non-toxic strategy is used to synthesize Co2 P@NPC. DNA serves as N, P co-doped carbon substrate and phosphorous source for forming TMPs. The Co2 P nanoparticles are uniformly dispersed with the diameter of 3.5 nm. The Co2 P@NPC exhibit efficient HER activity due to the synergistic effect. Abstract: A novel freeze-drying accompanied by direct pyrolysis method was conducted to fabricate porous N, P co-doped carbon-coated ultrafine Co2 P nanoparticles (Co2 P@NPC) using deoxyribonucleic acid (DNA). DNA, for the first time, is used as a precursor of the N, P co-doped carbon substrate, as well as an in-situ P source for the preparation of Co2 P. Benefiting from the ultrafine Co2 P nanoparticles and the porous N, P co-doped carbon, the Co2 P@NPC shows excellent performance toward hydrogen evolution reaction (HER). Moreover, the N, P co-doped carbon shell can successfully prevent the Co2 P nanoparticles from corrosion or decomposition, and it ensures the good interface stability. These results may provide a novel strategy for the design and synthesis of N, P co-doped carbon encapsulated ultrafine metal phosphides electrocatalysts.