Jump to main content
Jump to site search


In-Situ g-C3N4 Self-Sacrificial Synthesis of g-C3N4/LaCO3OH Heterostructure with Booming Interfacial Charge Transfer and Separation for Photocatalytic NO Removal

Abstract

Graphitic carbon nitride (g-C3N4) as a metal-free semiconductor photocatalyst is continually struggling with the high recombination rate of photo-induced charge carriers. Developing heterostructure is an effective way to suppress the photo-induced e−-h+ pairs recombination. In this study, a novel heterostructured g-C3N4/hierarchical reuleaux triangle LaCO3OH nanocomposite was controllably fabricated via one-pot hydrothermal strategy for the first time rather than though the conventional solid state calcination reaction, relying on the dual-functional roles of g-C3N4. g-C3N4, serving as both structural direct agent and CO32- source in the reaction system, significantly influence the morphology engineering of LaCO3OH. The time-dependent structure evolutions were discussed in detail. The booming interfacial charge transfer and separation are the dominant factors for activity enhancement of g-C3N4/LaCO3OH towards gaseous nitric oxide (NO) degradation under visible light, as confirmed by experimental characterizations and density functional theory (DFT) theoretical calculations. Combined with the identification of reaction intermediates and electron spin resonance (ESR) results, the photocatalytic degradation mechanism of NO over g-C3N4/LaCO3OH heterojunction was proposed. More importantly, this novel self-sacrificial synthesis strategy was successfully extended to synthesize both g-C3N4/Bi2O2CO3 and g-C3N4/SrCO3 composites, indicating it can serve as a general method to synthesize g-C3N4/carbonate compounds.

Back to tab navigation

Supplementary files

Publication details

The article was received on 17 Oct 2017, accepted on 30 Nov 2017 and first published on 01 Dec 2017


Article type: Paper
DOI: 10.1039/C7TA09132J
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
  •   Request permissions

    In-Situ g-C3N4 Self-Sacrificial Synthesis of g-C3N4/LaCO3OH Heterostructure with Booming Interfacial Charge Transfer and Separation for Photocatalytic NO Removal

    Z. Wang, Y. Huang, L. Chen, M. Chen, J. Cao, W. Ho and S. C. Lee, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA09132J

Search articles by author

Spotlight

Advertisements