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Effect of pH value on the structure of amorphous zirconia precursor under coprecipitation

Yang He, Zhihui Li, and Feng Wu

School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, China

 

E-mail: amlzh@126.com

Received: 19 June 2022  Accepted: 6 September 2022

Abstract:

Zirconia precursor was obtained by coprecipitation method. This paper explains the formation mechanism of zirconia from the molecular level. The chemical formula of zirconia precursor is determined by mass analysis, the chemical bond composition of zirconia precursor is determined by Raman spectroscopy, and the results of Raman spectroscopy were fitted by Gaussian software. The possible theoretical structure of zirconia precursor in the range of high and low pH values is proposed, and the structures of simulated zirconia precursors were consistent with the results of XRD and Raman spectra. With the continuous improvement of theoretical structure of zirconia precursor, it is expected that the structure of zirconia precursor will be modified at molecular level in the future to obtain ideal zirconia powder.

Keywords: pH value; Zirconium hydrate precursor; Theoretical structure; Raman

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-022-02477-6

 

Chemical Papers 77 (1) 269–276 (2023)

Wednesday, April 17, 2024

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