ZnCr-LDH/N-doped graphitic carbon-incorporated g-C3N4 2D/2D nanosheet heterojunction with enhanced charge transfer for photocatalysis

Journal Article · Fri Jun 15 00:00:00 EDT 2018 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2018.03.010· OSTI ID:22804033

Liu, Jun; Li, Jia; Bing, Xingmei ^[1]; Ng, Dickon H.L. ^[2]; Cui, Xinling; Ji, Fei; Kionga, Denis Dienguila ^[1]

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1. School of Material Science and Engineering, University of Jinan, Jinan (China)
2. Department of Physics, The Chinese University of Hong Kong, Shatin (China)

Highlights: • Synthesize a novel ZnCr-LDH/modified-g-C{sub 3}N{sub 4} photocatalyst by a facile template free in situ coprecipitation method approach. • The synergistic effect of adsorption and catalytic improve the ability of photodegradation. • Composites with 2D-2D nanosheets structure present superior catalytic activity than pure phases. • Calcinated photocatalyst has high visible-light respond capacity and low recombination rate of electron-hole pairs due to the formation of heterojunction. - Abstract: In this work, we successfully synthesized a novel ZnCr-LDH/N-doped graphitic carbon-incorporated g-C{sub 3}N{sub 4} (g-C{sub 3}N{sub 4}-C(N)) hybrid with unique two-dimensional/two-dimensional (2D-2D) structure for the efficient degradation of Congo red under visible light irradiation. It was demonstrated that ZnCr-LDH/g-C{sub 3}N{sub 4}-C(N) exhibited lower photogenerated electron-hole recombination rate and enhanced light harvesting. Furthermore, its derived calcined product also showed outstanding performance due to the unique heterogeneous structure and the synergistic effect between photocatalysis and adsorption. In addition, the mixed metal oxide ZnO and ZnCr{sub 2}O{sub 4} in ZnCr-CLDH/g-C{sub 3}N{sub 4}-C(N) dispersed uniformly on the g-C{sub 3}N{sub 4}-C(N) exposed more active sites and facilitated the photodegradation of pollutants.

• OSTI ID: 22804033
• Journal Information: Materials Research Bulletin, Vol. 102; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ADSORPTION
CARBON NITRIDES
CHROMITES
COPRECIPITATION
DOPED MATERIALS
DYES
ELECTRON-HOLE COUPLING
GRAPHITE
HETEROJUNCTIONS
NANOSTRUCTURES
PHOTOCATALYSIS
RADIATION EFFECTS
RECOMBINATION
TWO-DIMENSIONAL SYSTEMS
VISIBLE RADIATION
ZINC OXIDES