Task-Specific Synthesis of 3D Porous Carbon Nitrides from the Cycloaddition Reaction and Sequential Self-Assembly Strategy toward Photocatalytic Hydrogen Evolution

Jingwen Sun, Fanglei Yao, Liming Dai, Jingyao Deng, Hongan Zhao, Litong Zhang, Yin Huang, Zhanhong Zou, Yongsheng Fu, Junwu Zhu

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Carbon nitride has drawn widespread attention as a low-cost alternative to metal-based materials in the field of photocatalysis. However, the traditionally synthesized carbon nitrides always suffer a bulky architecture, which limits their intrinsic activities. Here, a cycloaddition reaction is proposed to synthesize a triazine-based precursor with implanted sodium and cyano groups, which are mostly retained in the resulting carbon nitride after the following polymerization. Incorporated sodium and cyano defects can not only tune the band structure of the carbon nitride but also provide more additive active sites. The optimized properties enable it an adorable photocatalytic hydrogen evolution rate of 1070 μmol h-1 g-1, varying by almost an order of magnitude from the pristine carbon nitride (79 μmol h-1 g-1). Moreover, a sequential self-assembly strategy has been adopted to further improve its architecture. As a consequence, a three-dimensional (3D) porous carbon nitride microtube cluster is constructed, indicating abundant exposed active sites and the faster separation of charge carriers. The corresponding photocatalytic hydrogen evolution rate is 1681 μmol h-1 g-1, which is very competitive compared with the reported pure carbon nitride photocatalysts. Briefly, this new approach may offer opportunities to fabricate task-specific carbon- and nitrogen-based materials from the molecular level.

Original languageEnglish
Pages (from-to)40433-40442
Number of pages10
JournalACS applied materials & interfaces
Volume12
Issue number36
DOIs
StatePublished - 9 Sep 2020
Externally publishedYes

Keywords

  • carbon nitride
  • cyano defect
  • cycloaddition reaction
  • photocatalytic hydrogen evolution
  • sodium

ASJC Scopus subject areas

  • Materials Science (all)

Fingerprint

Dive into the research topics of 'Task-Specific Synthesis of 3D Porous Carbon Nitrides from the Cycloaddition Reaction and Sequential Self-Assembly Strategy toward Photocatalytic Hydrogen Evolution'. Together they form a unique fingerprint.

Cite this