Formation and Dissolution of Twin ZnO Nanostructures Promoted by Water and Control over Their Emitting Properties

Distaso M, Mackovic M, Spiecker E, Peukert W (2014)

Publication Type: Journal article

Publication year: 2014

Journal

Chemistry - A European Journal Wiley-VCH Verlag

Publisher: Wiley-VCH Verlag

Book Volume: 20

Pages Range: 8199--8209

Volume: 20

Issue: 26

Journal Issue: 26

DOI: 10.1002/chem.201400100

Abstract

By using ZnO as a model system, the formation of twinned nanostructures has been investigated under microwave irradiation, exploiting experimental conditions ranging from purely solvothermal when N,N-dimethylformamide was used, to purely hydrothermal when water was the solvent. A progressive increase in size, elongation and roughness of the surface was observed with increasing water content in the solvent mixture. Particular attention was paid to the reactivity of the ZnO surfaces towards dissolution. Our results show that the formation of twinned nanorods is a dynamic process and that the coupling interphase itself is highly reactive. Consequently, the twinned rods undergo a number of complex dissolution processes that are responsible for the appearance of a wide distribution of defects either on the surface or inside the structure. Poly(N-vinyl pyrrolidone) influences the photoluminescent properties of the as-synthesised materials and allows control of the ratio of the intensity of the UV and visible emission.

Authors with CRIS profile

Monica Distaso Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik Mirza Mackovic Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung) Erdmann Spiecker Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung) Wolfgang Peukert Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik

Additional Organisation(s)

Graduiertenkolleg 1896/2 In situ Mikroskopie mit Elektronen, Röntgenstrahlen und Rastersonden Exzellenz-Cluster Engineering of Advanced Materials Interdisziplinäres Zentrum, Center for Nanoanalysis and Electron Microscopy (CENEM)

How to cite

APA:

Distaso, M., Mackovic, M., Spiecker, E., & Peukert, W. (2014). Formation and Dissolution of Twin ZnO Nanostructures Promoted by Water and Control over Their Emitting Properties. Chemistry - A European Journal, 20(26), 8199--8209. https://doi.org/10.1002/chem.201400100

MLA:

Distaso, Monica, et al. "Formation and Dissolution of Twin ZnO Nanostructures Promoted by Water and Control over Their Emitting Properties." Chemistry - A European Journal 20.26 (2014): 8199--8209.

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