Jump to main content
Jump to site search


Intercalative hybridization of layered double hydroxide nanocrystals with mesoporous g-C3N4 for enhancing visible light-induced H2 production efficiency

Author affiliations

Abstract

Efficient visible light active hybrid photocatalysts for H2 production can be synthesized by the intercalative hybridization of Zn–Cr-layered double hydroxide (Zn–Cr-LDH) with a mesoporous g-C3N4 lattice. Small Zn–Cr-LDH nanocrystals with a size of ∼6 nm are immobilized in the mesopores of g-C3N4. Beyond an optimal LDH/g-C3N4 molar ratio of 0.3, a further increase in the LDH content leads to the surface deposition of LDH crystals on the g-C3N4 material as well as the intercalative immobilization of LDH into its mesopores, indicating the controllability of the LDH deposition site. The Zn–Cr-LDH−g-C3N4 nanohybrids exhibit smaller surface areas than the pristine g-C3N4, confirming the intercalative stabilization of Zn–Cr-LDH nanocrystals in the mesopore of g-C3N4. The hybridization between Zn–Cr-LDH and g-C3N4 is effective in enhancing visible light absorptivity and also in depressing electron−hole recombination, which is attributable to an efficient electronic coupling between both the hybridized components. The present Zn–Cr-LDH−g-C3N4 nanohybrid exhibits promising photocatalytic activities for visible light-induced H2 production at a rate of 155.7 μmol g−1 h−1, which is much superior to that of the pristine g-C3N4 (21.7 μmol g−1 h−1). The present study underscores that the intercalative immobilization of Zn–Cr-LDH crystals in the limited space of a mesopore is quite useful in improving the visible light active photocatalyst functionality of mesoporous carbon nitride.

Graphical abstract: Intercalative hybridization of layered double hydroxide nanocrystals with mesoporous g-C3N4 for enhancing visible light-induced H2 production efficiency

Back to tab navigation

Supplementary files

Publication details

The article was received on 15 Sep 2017, accepted on 07 Nov 2017 and first published on 07 Nov 2017


Article type: Paper
DOI: 10.1039/C7DT03466K
Citation: Dalton Trans., 2018, Advance Article
  •   Request permissions

    Intercalative hybridization of layered double hydroxide nanocrystals with mesoporous g-C3N4 for enhancing visible light-induced H2 production efficiency

    J. M. Lee, J. Yang, N. H. Kwon, Y. K. Jo, J. Choy and S. Hwang, Dalton Trans., 2018, Advance Article , DOI: 10.1039/C7DT03466K

Search articles by author

Spotlight

Advertisements