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Facile Synthesis of Gold Nanoparticles Decorated Core–Shell Fe3O4@Carbon: Control of Surface Charge and Comparison in Catalytic Reduction for Methyl Orange

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We report a facile synthesis of Au nanoparticles (Au NPs) decorated Fe3O4@carbon (Fe3O4@C) core–shell nanoparticles (denoted as Fe3O4@[email protected]) with easy inverting the surface charge of the composites through the hexadecyl trimethyl ammonium bromide (CTAB) treatment (denoted as Fe3O4@[email protected]). Nanoparticles of both kinds have been studied as catalysts for an anionic methyl orange (MO) reduction. Fe3O4@[email protected] positively charged exhibits a faster catalytic ability toward anionic MO than negatively charged Fe3O4@[email protected], indicating an effect of the electrostatic interaction on catalytic reduction. The facile and green preparation, high catalytic capability, selective surface property and recyclability make Fe3O4@[email protected] an appropriate platform for nanocatalysis in wastewater treatment.
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Keywords: Anionic MO; Electrostatic Interaction; Nanocatalyst; Surface Charge

Document Type: Research Article

Affiliations: 1: School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China 2: Ministry of Education Key Laboratory of Advanced Civil Engineering Materials, School of Materials Science and Engineering, and Institute for Advanced Study, Tongji University, Shanghai, 201804, China

Publication date: April 1, 2020

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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