Issue 6, 2011
From the journal:

CrystEngComm

An environment-benign solvothermal method for the synthesis of flower-like hierarchical nickel and zinc compounds and their transformation to nanoporous NiO and ZnO†

Zai-Xing Yang,a   Wei Zhong,*a   Chaktong Au,b   Jing-Ying Wanga  and  You-Wei Dua  

* Corresponding authors

a Nanjing National Laboratory of Microstructures and Department of Physics, Nanjing University, Nanjing, People's Republic of China
E-mail: wzhong@mail.nju.edu.cn
Fax: +86-25-83595535
Tel: +86-25-83621200

b Chemistry Department, Hong Kong Baptist University, Hong Kong, People's Republic of China

Abstract

Flower-like hierarchical Ni3(NO3)2(OH)4 and Zn5(OH)8(NO3)2(H2O)2 compounds were synthesized by a simple solvothermal method. Absolute ethanol was adopted as solvent, and the precursor is the corresponding nitrate. The as-prepared products were studied by XRD, SEM, TEM, and SAED. It is noted that compared to the conventional oil–water surfactant system, this biosafe alcohol system is simpler and environmentally more benign. Through calcination of the as-synthesized nickel and zinc compounds, nanoporous NiO and ZnO were generated. The optical properties of the nanoporous NiO and ZnO microcrystals have been discussed in terms of photoluminescence (PL) at room temperature. An emission band centered at ca. 2.3 eV that could only be found by cathodoluminescence was observed for the NiO microcrystals. We tentatively assign the peak to the magnetic exciton state 3d82p and relate it to the unique nanostructure of the nanoporous NiO microcrystals.

Graphical abstract: An environment-benign solvothermal method for the synthesis of flower-like hierarchical nickel and zinc compounds and their transformation to nanoporous NiO and ZnO

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Article information

DOI
https://doi.org/10.1039/C0CE00462F
Article type
Paper
Submitted
28 Jul 2010
Accepted
22 Nov 2010
First published
08 Dec 2010

CrystEngComm, 2011,13, 1831-1837

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An environment-benign solvothermal method for the synthesis of flower-like hierarchical nickel and zinc compounds and their transformation to nanoporous NiO and ZnO

Z. Yang, W. Zhong, C. Au, J. Wang and Y. Du, CrystEngComm, 2011, 13, 1831 DOI: 10.1039/C0CE00462F

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