Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 310, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2022.121323
Keywords
Crystalline carbon nitride; Self-assembly structure; Intermediate-induced strategy; Synergistic optimization; Solar hydrogen production
Funding
- National Natural Science Foundation of China [21236008]
- Liao Ning Revitalization Talents Program, China [XLYC2008032]
Ask authors/readers for more resources
A strategy for synthesizing red polymeric carbon nitride (PCN) nanosheets with a three-dimensional structure, minimal structural defects, small curved nanosheet subunits, and abundant reactive sites was reported. The optimized PCN exhibits superior photocatalytic performance in H-2 evolution, outperforming pristine bulk and nanosheet-structured PCN.
Few-layered polymeric carbon nitride (PCN) nanosheets with large specific surface area and effective charge/electron transport pathway have emerged as promising photocatalysts. However, PCN nanosheets normally exhibit enlarged bandgap, structural defects, and easy agglomeration. Herein, we report an intermediate-induced strategy for synthesizing red PCN nanosheets with a crystalline free self-assembly (CFSA) architecture, exhibiting a three-dimensional (3D) structure, minimum structural defects, small curved nanosheet subunits, and abundant reactive sites. The careful tuning of the condensation degree and repolymerization ability of intermediates affords CFSA PCN with an optimal 3D structure and optical properties, enabling the synergistic optimization of light absorption, charge mobility, and surface reactions during photocatalysis. The catalyst shows a superior H-2 evolution rate of 14665 mu mol g(-1) h(-1) (Pt 1.1 wt%), outperforming those of pristine bulk and nanosheet-structured PCN. This work provides a facile intermediate-induced strategy for guiding the design and synthesis of novel PCN-based photocatalysts.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available