Covalently bonded 2D/2D O-g-C3N4/TiO2 heterojunction for enhanced visible-light photocatalytic hydrogen evolution

By Ruyi Zhong, Zisheng Zhang, Huqiang Yi, Lei Zeng, Chao Tang, Limin Huang, Meng Gu. Applied Catalysis B: Environmental, 2018

146 citations recorded by the source corpus.

Abstract Visible-light photocatalytic hydrogen evolution is a key step towards utilizing solar energy. Here we constructed covalently bonded oxidized graphitic C3N4/TiO2 (O-g-C3N4/TiO2) heterostructure with high surface area via an in-situ solvothermal synthetic strategy. The edge-anchoring of two-dimensional (2D) TiO2 on 2D O-g-C3N4 was evidenced by the HAADF-STEM EDS mapping, EELS and XPS analysis. Density functional theory computations suggest strong affinity between TiO2 and O-g-C3N4 2D structures through N O Ti covalent bonding, which drastically enhances the synergetic effect of the light absorption of O-g-C3N4 and high surface area of TiO2. The as-formed heterojunction can remarkably boost the visible-light photocatalytic activity for H2 evolution by 6.1 times compared to physical mixture of TiO2 nanosheets (NS) and O-g-C3N4.

Subfields: Electrical and Electronic Engineering, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/4ff50d40c10dcf44c62b3ecd488e96d4d071b197

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

  1. Yunping He
  2. Xuedan Song
  3. Sihang Liu
  4. Z. Tan
  5. X. Kang
  6. Z. Dai

Citations in the corpus