An electron-hole rich dual-site nickel catalyst for efficient photocatalytic overall water splitting

Abstract Photocatalysis offers an attractive strategy to upgrade H 2 O to renewable fuel H 2 . However, current photocatalytic hydrogen production technology often relies on additional sacrificial agents and noble metal cocatalysts, and there are limited photocatalysts possessing overall water splitting performance on their own. Here, we successfully construct an efficient catalytic system to realize overall water splitting, where hole-rich nickel phosphides (Ni 2 P) with polymeric carbon-oxygen semiconductor (PCOS) is the site for oxygen generation and electron-rich Ni 2 P with nickel sulfide (NiS) serves as the other site for producing H 2 . The electron-hole rich Ni 2 P based photocatalyst exhibits fast…

• NN
  National Natural Science Foundation of China

  Awards: 22108214, 22078256, U22A20391
• CP
  China Postdoctoral Science Foundation

  Award: 2021TQ0262
• FR
  Fundamental Research Funds for the Central Universities

  Award: xzy012022068