• 文献标题:   PdP2 nanoparticles-reduced graphene oxide for electrocatalytic N-2 conversion to NH3 under ambient conditions
  • 文献类型:   Article
  • 作  者:   XIE HT, GENG Q, ZHU XJ, LUO YL, CHANG L, NIU XB, SHI XF, ASIRI AM, GAO SY, WANG ZMM, SUN XP
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF MATERIALS CHEMISTRY A
  • ISSN:   2050-7488 EI 2050-7496
  • 通讯作者地址:   Univ Elect Sci Technol China
  • 被引频次:   41
  • DOI:   10.1039/c9ta09910g
  • 出版年:   2019

▎ 摘  要

Producing NH3 through the Haber-Bosch process has brought about huge energy-consumption and heavy emission of CO2. Electrochemical N-2 reduction offers a promising alternative to realize N-2 fixation under ambient conditions. In this paper, PdP2 nanoparticles-reduced graphene oxide (PdP2-rGO) is proposed as an efficient electrocatalyst for the N-2 reduction reaction. In 0.5 M LiClO4, PdP2-rGO affords a large NH3 yield rate of 30.3 mu g h(-1) mg(cat.)(-1) and a high faradaic efficiency of 12.56% at -0.1 V versus the reversible hydrogen electrode, which are much superior to those of its Pd-rGO counterpart (NH3 yield rate of 14.5 mu g h(-1) mg(cat.)(-1) and FE of 4.28%). This catalyst also shows high stability. Density functional theory calculations suggest that the barriers for N-2 activation and the subsequent hydrogenation process on the Pd catalyst are alleviated after alloying with P.