Issue 85, 2016, Issue in Progress

Synthesis of core–shell structured alumina/Cu microspheres using activation by silver nanoparticles deposited on polydopamine-coated surfaces

Abstract

A facile approach was developed to synthesize core–shell structured alumina/Cu microspheres by means of activation by silver nanoparticles in situ deposited on the polydopamine-coated alumina microsphere surface. This approach takes advantage of both the sufficient reductive capacity of polydopamine towards silver ions and the high activation of silver nanoparticles towards copper deposition. The chemical compositions of composite microspheres were characterized by energy dispersive X-ray spectroscopy (EDS) and Fourier transform infrared spectroscopy (FTIR). The surface morphologies and crystalline structures of the coated alumina were studied by field-emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD), respectively. The adhesion strength between the copper layer and the substrate was evaluated by ultrasonic exposure and thermal shock test. The results showed that silver nanoparticles effectively catalyzed the copper deposition reaction on the polydopamine-coated surface, which led to a faster and more reliable plating process compared with the process without activation. The compact and continuous copper layer obtained showed strong adhesion on the substrate surface.

Graphical abstract: Synthesis of core–shell structured alumina/Cu microspheres using activation by silver nanoparticles deposited on polydopamine-coated surfaces

Article information

Article type
Paper
Submitted
08 Apr 2016
Accepted
16 Aug 2016
First published
17 Aug 2016

RSC Adv., 2016,6, 81767-81773

Synthesis of core–shell structured alumina/Cu microspheres using activation by silver nanoparticles deposited on polydopamine-coated surfaces

J. Hu, S. Wu, Q. Cao and W. Zhang, RSC Adv., 2016, 6, 81767 DOI: 10.1039/C6RA09106G

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