G-C3N4 (2D)/CdS (1D)/rGO (2D) dual-interface nano-composite for excellent and stable visible light photocatalytic hydrogen generation

Surendar Tonda, Santosh Kumar, Yogesh Gawli, Monika Bhardwaj, Satishchandra Ogale*

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

A 2D/1D/2D dual-interface nano-composite configuration in the form of CdS nanorods sandwiched between g-C3N4 and rGO sheets with intimate interfacial contact is synthesized by a facile wet-chemical method and is shown to exhibit excellent photocatalytic H2 generation under visible-light irradiation. In particular, the optimal g-C3N4/CdS/rGO dual-interface nano-composite shows H2 production rate of ∼4800 μmol h-1 g-1, which is almost 44, 11 and 2.5 times higher than that shown by pure g-C3N4 nanosheets, and the g-C3N4/rGO and g-C3N4/CdS single interface heterostructures, respectively. It is shown that the synergic effects involving the band structure match and close interfacial contact, which can accelerate the separation and transfer of photoinduced charge carriers, and the enhanced visible-light absorption together contribute to the impressive photocatalytic performance and photostability of the g-C3N4/CdS/rGO ternary nano-composite system. Specific advantages of a dual-interface triple-composite system over a single interface case(s) are also brought out.

Original languageEnglish
Pages (from-to)5971-5984
Number of pages14
JournalInternational Journal of Hydrogen Energy
Volume42
Issue number9
Early online date29 Nov 2016
DOIs
Publication statusPublished - 2 Mar 2017

Fingerprint

Large scale systems
Hydrogen
composite materials
Nanosheets
Composite materials
hydrogen
Charge carriers
Nanorods
Band structure
Light absorption
Heterojunctions
Irradiation
electromagnetic absorption
nanorods
charge carriers
irradiation
configurations

Bibliographical note

© 2016, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Supplementary data available on the journal website.

Keywords

  • charge transfer
  • dual-interface
  • G-CN
  • H generation
  • heterostructure
  • nano-composite

Cite this

Tonda, Surendar ; Kumar, Santosh ; Gawli, Yogesh ; Bhardwaj, Monika ; Ogale, Satishchandra. / G-C3N4 (2D)/CdS (1D)/rGO (2D) dual-interface nano-composite for excellent and stable visible light photocatalytic hydrogen generation. In: International Journal of Hydrogen Energy. 2017 ; Vol. 42, No. 9. pp. 5971-5984.
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G-C3N4 (2D)/CdS (1D)/rGO (2D) dual-interface nano-composite for excellent and stable visible light photocatalytic hydrogen generation. / Tonda, Surendar; Kumar, Santosh; Gawli, Yogesh; Bhardwaj, Monika; Ogale, Satishchandra.

In: International Journal of Hydrogen Energy, Vol. 42, No. 9, 02.03.2017, p. 5971-5984.

Research output: Contribution to journalArticle

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AU - Tonda, Surendar

AU - Kumar, Santosh

AU - Gawli, Yogesh

AU - Bhardwaj, Monika

AU - Ogale, Satishchandra

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