A theoretical analysis of the vibrational modes of ammonium metavanadate

Guo, Qing; Liu, Xiaoyan; Liu, Sicheng; Li, Yining; Yin, Yi; Zhang, Peng

doi:10.1039/d3ra02053c

Cited by 2 publications

(2 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is worth noting that the Raman spectrum we calculated was in the IR region so it was nonresonant Raman spectrum. Based on the IR-active peaks related to W, we propose a new method to enhance the separation process of W from oxide, namely photon–phonon resonance absorption (PPRA). , …”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Theoretical Study of Efficient Photon–Phonon Resonance Absorption in the Tungsten-Related Vibrational Mode of Scheelite

Yin,

Li,

Liu

et al. 2024

ACS Omega

Self Cite

View full text Add to dashboard Cite

Tungsten (W) is an extremely rare and vital metal extensively used in metallurgy, the chemical industry, optoelectronic devices, and machinery manufacturing. In this work, an environmentally friendly and efficient physical method based on photon−phonon resonance absorption (PPRA) is proposed for separating W from scheelite. We calculated the vibrational spectrum of calcium tungstate (CaWO 4 ) and assigned the infrared (IR) absorption and Raman scattering peaks through a dynamic analysis of the normal modes. We focused on the strong IR absorption peaks related to W and identified three high-intensity IR-active modes at around 830 cm −1 , corresponding to the stretching of the W− O bonds. Therefore, we propose the use of high-power terahertz (∼25 THz) laser radiation to facilitate W extraction from compounds, leveraging the high efficiency of PPRA. Experimental testing is required to determine the precise absorption frequency under industrial production conditions.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Based on the IR-active peaks related to W, we propose a new method to enhance the separation process of W from oxide, namely photon–phonon resonance absorption (PPRA). 24 , 25 …”

Section: Introductionmentioning

confidence: 99%