One-dimensional ZnO micro/nanostructures: deep insight into the growth mechanism and fine control of the microscopic morphology. Issue 8 (10th February 2021)

• Record Type: Journal Article
• Authors: Wang, Leshuang; Wei, Yuling; Chen, Changlong; Yang, Shu
• Is Part Of: Dalton transactions. Volume 50:Issue 8(2021)
• Page Start: 3011
• Page End: 3019
• Publication Date: 2021-02-10
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d1dt00127b
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : One-dimensional ZnO micro/nanostructures are grown on FTO substrates, in which the growth mechanism is deeply explored and the microscopic morphologies are finely controlled. Abstract : One-dimensional zinc oxide arrays with various finely controlled microscopic morphologies are grown on fluorine-doped tin oxide substrates by a hydrothermal method. The relationship between the microscopic morphologies and the reaction conditions are studied deeply. It is found that although all the studied reaction parameters, like reaction time, pH value, concentration of the reactants and so on, can affect the microstructures of the resultant products, what they affect, in essence, is the concentration of free Zn 2+ ions of the solution. By exploring the evolution of the microstructure of the one-dimensional zinc oxide crystals, it is proved that the formation of the various microscopic morphologies is a result of the competition between the kinetic control and the thermodynamic control during the crystal growth, which in turn is mainly determined by the concentration of the free Zn 2+ ions in the solution. The in-depth exploration of the growth mechanism of zinc oxide and the fine control of its microscopic morphologies is expected to provide advanced materials for current and future cutting-edge applications of zinc oxide. It is also expected that the growth mechanism reported here can provide theoretical support for achieving other oxide materials whose microstructure can be finely controlled.