Luo, L;
Gong, Z;
Ma, J;
Wang, K;
Zhu, H;
Li, K;
Xiong, L;
... Tang, J; + view all
(2021)
Ultrathin sulfur-doped holey carbon nitride nanosheets with superior photocatalytic hydrogen production from water.
Applied Catalysis B: Environmental
, 284
, Article 119742. 10.1016/j.apcatb.2020.119742.
Preview |
Text
Sulfur-doped C3N4.pdf - Accepted Version Download (1MB) | Preview |
Abstract
Surface engineering is an efficient way to enhance photoabsorption, promote charge separation and boost photocatalysis. Herein, sulfur-doped holey g-C3N4 nanosheets have been prepared through a universal self-templating approach with thiocyanuric acid as the single-precursor. By subtly controlling the feeding amount of precursor, the synthesized sulfur-doped holey g-C3N4 nanosheets exhibit excellent visible-light driven photocatalytic hydrogen production activity. The optimized catalyst presents a hydrogen evolution rate of 6225.4 μmol g−1h−1, with an apparent quantum yield of 10 % at 420 nm. Comprehensive characterizations and theoretical calculations suggest that the enhanced photocatalysis is attributed to the synergy of the enlarged surface area, the negatively-shifted conduction band, and the narrowed bandgap due to sulfur-doping and ultra-thin two-dimensional topology. This work highlights the importance of controlling the precursor dosage and inducing sulfur doping into the polymer, providing a promising and reliable strategy to simultaneously regulate the nanostructural and electronic structure of g-C3N4 for highly efficient photocatalysis.
| Type: | Article |
|---|---|
| Title: | Ultrathin sulfur-doped holey carbon nitride nanosheets with superior photocatalytic hydrogen production from water |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.apcatb.2020.119742 |
| Publisher version: | http://dx.doi.org/10.1016/j.apcatb.2020.119742 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Graphitic carbon nitride, Surface modification, Sulfur-doping, Two-dimensional materials, Visible water splitting |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10120583 |
Archive Staff Only
 |
View Item |
