Investigation of copper sulfate pentahydrate dehydration by terahertz time-domain spectroscopy

doi:10.1088/1674-1056/28/6/060702

Abstract

Copper sulfate pentahydrate is investigated by terahertz time-domain spectroscopy. It is shown that the terahertz absorption coefficients are correlated with the particle size of the samples, as well as the heating rates of the ambient temperature. Furthermore, the water molecules of copper sulfate pentahydrate can be quantitatively characterized due to the high sensitivity of the terahertz wave to water molecules. Based on such results, the status of water incorporated in mineral opal is also characterized using terahertz time-domain spectroscopy. It indicates that terahertz technology can be considered as an efficient method to detect the dehydration of minerals.

Keywords: copper sulfate pentahydrate water status terahertz time-domain spectroscopy

Received: 21 February 2019
Revised: 02 April 2019
Accepted manuscript online:

PACS:	07.57.Hm	(Infrared, submillimeter wave, microwave, and radiowave sources)
	29.30.-h	(Spectrometers and spectroscopic techniques)
	33.20.-t	(Molecular spectra)

Fund:

Project supported by the National Natural Science Foundation of China (Grant No. 61805214) and the Fundamental Research Funds for the Central Universities, China (Grant No. 2652017142).

Corresponding Authors: Wei-Chong Tang, Zi-Li Zhang
E-mail: hhcistaurus@hotmail.com;zlzhang@cugb.edu.cn

Cite this article:

Yuan-Yuan Ma(马媛媛), Hao-Chong Huang(黄昊翀), Si-Bo Hao(郝思博), Wei-Chong Tang(汤伟冲), Zhi-Yuan Zheng(郑志远), Zi-Li Zhang(张自力) Investigation of copper sulfate pentahydrate dehydration by terahertz time-domain spectroscopy 2019 Chin. Phys. B 28 060702

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Investigation of copper sulfate pentahydrate dehydration by terahertz time-domain spectroscopy

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