Enhanced photocatalytic efficiency of AuPd nanoalloy decorated ZnO-reduced graphene oxide nanocomposites
作者： Bharati Panigrahy , D. D. Sarma
DOI: 10.1039/C4RA13245A
关键词: Rhodamine 6G 、 Nanorod 、 Photocatalysis 、 Bimetallic strip 、 Oxide 、 Nanocomposite 、 Graphene 、 Chemical engineering 、 Materials science 、 Nanotechnology 、 Photodegradation
摘要: Inhibition of electron–hole pair recombination is the most desirable solution for stimulating photocatalytic activity in semiconductor nanostructures. To implement this, herein we study efficiency elemental Au, Pd and bimetallic AuPd nanoalloy decorated pristine reduced graphene oxide (RGO) hybridized ZnO nanorods degrading rhodamine 6G (R6G) dye. Fabrication on RGO modified simple more importantly surfactant or polymer free. nanoalloyed ZnO–RGO nanocomposites exhibit higher dye than both Au ones, indicating promising potential nanoalloys over components. A non-monotonic dependence composite composition was found by analyzing photodegradation a series ZnO–RGO–AuPd hybrid nanostructures with different weight percentages RGO. The nanostructure (5 wt%)–AuPd (1 wt%) exhibits highest (∼100% degradation 20 min) an improvement rate constant (k) factor 10 compared to that nanocomposite. enhancement attributed better separation photogenerated charge carriers photocatalysts thereby suggesting possible usefulness broad range applications, such as sensing, photocatalysis solar energy conversion.
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