Thermal Defect Modulation and Functional Performance

A Case Study on ZnO–rGO Nanocomposites

Document identifier: oai:DiVA.org:ltu-76877
Access full text here:10.1002/pssb.201900239
Keyword: Natural Sciences, Physical Sciences, Other Physics Topics, Naturvetenskap, Fysik, Annan fysik, Crystalline defects, Hybrid nanocomposites, Photocatalysis, Photoluminescence, Reduced graphene oxide, Thermal treatment, Zinc oxide, Experimentell fysik, Experimental Physics
Publication year: 2019
Relevant Sustainable Development Goals (SDGs):
SDG 9 Industry, innovation and infrastructureSDG 7 Affordable and clean energy
The SDG label(s) above have been assigned by OSDG.ai

Abstract:

Herein, a reduced graphene oxide–zinc oxide (rGO–ZnO) hybrid nanocomposite (1 wt% rGO) is synthesized and heat treated at different temperatures, aimed at modulating the intrinsic bulk/surface defects naturally present in nano‐ZnO. The correlation of both the dispersion of rGO within the metal oxide scaffold and the defects present on the semiconductor crystalline lattice with the photocatalytic performance toward the degradation of a molecular dye in water is investigated and discussed. It is shown that several processes compete to determine the catalytic skill of the nanocomposite, which can be enhanced by a simple thermal treatment at moderate temperatures.

Authors

Anton Landström

Luleå tekniska universitet; Materialvetenskap
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Alexander Soldatov

Luleå tekniska universitet; Materialvetenskap
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Alberto Vomiero

Luleå tekniska universitet; Materialvetenskap
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Isabella Concina

Luleå tekniska universitet; Materialvetenskap
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