Jump to main content
Jump to site search

Issue 3, 2019
Previous Article Next Article

Hierarchical CoFe-layered double hydroxide and g-C3N4 heterostructures with enhanced bifunctional photo/electrocatalytic activity towards overall water splitting

Author affiliations

Abstract

To achieve sustainable and clean energy for the hydrogen economy, developing efficient earth-abundant and non-noble transition metal photo/electrocatalysts toward overall water splitting is highly desirable. In this work, layered double hydroxide (LDH)@g-C3N4 composites with hierarchical flower-like micro/nanosheets and a high surface area have been synthesized by a solvothermal method. HRTEM images exhibit that the surface of the g-C3N4 nanosheets is highly orientated with the main exposure of the (002) plane. Compared with pristine CoFe-LDH, the hierarchical nanocomposite presents an excellent and stable elecrocatalytic performance in 1.0 M KOH, with a small Tafel slope of 58 mV dec−1 and an overpotential of about 275 mV at a current density of 10 mA cm−2. Simultaneously, CoFe-LDH@g-C3N4 exhibits an exceptional performance for the HER in 1.0 M KOH electrolyte, with an overpotential of 417 mV at a current density of 10 mA cm−2 and a small Tafel slope of 77 mV dec−1. Therefore, this work not only accomplishes improved catalytic activity of CoFe-LDH by the introduction of g-C3N4 nanosheets, but also provides an insight into the correlation between hierarchical flower-like morphologies and photo/electrochemical catalytic activity for overall water splitting.

Graphical abstract: Hierarchical CoFe-layered double hydroxide and g-C3N4 heterostructures with enhanced bifunctional photo/electrocatalytic activity towards overall water splitting

Back to tab navigation

Supplementary files

Publication details

The article was received on 31 Dec 2018, accepted on 25 Jan 2019 and first published on 28 Jan 2019


Article type: Research Article
DOI: 10.1039/C8QM00677F
Mater. Chem. Front., 2019,3, 520-531

  •   Request permissions

    Hierarchical CoFe-layered double hydroxide and g-C3N4 heterostructures with enhanced bifunctional photo/electrocatalytic activity towards overall water splitting

    M. Arif, G. Yasin, M. Shakeel, M. A. Mushtaq, W. Ye, X. Fang, S. Ji and D. Yan, Mater. Chem. Front., 2019, 3, 520
    DOI: 10.1039/C8QM00677F

Search articles by author

Spotlight

Advertisements