The mechanism of the terahertz spectroscopy for oil shale detection

Zhan, Honglei; Chen, Mengxi; Zhao, Kun; Li, Yizhang; Miao, Xinyang; Ye, Hai‐Mu; Ma, Yue; Hao, Shijie; Li, Hongfang; Yue, Wenzheng

doi:10.1016/j.energy.2018.07.112

Cited by 34 publications

(12 citation statements)

References 30 publications

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“…From the resulting refractive index, one can obtain the absorption-coefficient and dielectric constant of the system. THz-TDS has been employed to investigate a wide diversity of materials, including liquids, semiconductors, superconductors, gases, biological imaging and explosive materials (Jin et al 2006;Zhan et al 2018). The mechanisms of the interaction in the (THz) prominent to the absorption within the THz frequency range in most of the material is still under discussion, but it appears evident that the relations between intramolecular in the internal network mediated by hydrogen bonds and the weak interactions as van der Waals forces show a significant role (Jepsen et al 2011).…”

Section: Introductionmentioning

confidence: 99%

High performance of talented copper/magneso-zinc titanate nanostructures as biocidal agents for inactivation of pathogens during wastewater disinfection

2020

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In the present research, the performance of MZT nano-titanate was established by combining (0.3-0.5) copper nanoparticles (0-0.5C-MZT) to improve the antimicrobial efficacy of promising engineered nanomaterials. XRD characterized the phase purity confirms the formation of magneto-zinc and copper titanates at 750 °C. The morphological features of four engineering nanoceramics were accurately described. As well, the inactivation effects of microbial growth were also evaluated for these kinds of engineered nanomaterials. After that, the disinfection of estimating four harmful waterborne bacteria in real wastewater was appraised. The results obtained of Raman active modes and FT-IR exhibit that the crystallization was strengthened by Cu doping. The natural THz response of the samples appears a distinct attenuation in the THz transmission. In addition, the results showed that 0.5C-MZT is a powerful antimicrobial agent for damaging the targeted pathogens. The results of toxicological safety tests indicated that the nanomaterials examined are safe for environmental applications. The results achieved reveal that the examined proficient dosage (200 mg/L) of studied 0.5C-MZT nanomaterials was practiced to deactivate four predominant waterborne pathogens in wastewater. Eventually, MZT could serve as a smart nano-weapon towards numerous sorts of dangerous pathogenic microbes and results; therefore, recommend that MZT can be employed as a talented disinfecting agent within wastewater processing.

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Section: Introductionmentioning

confidence: 99%

High performance of talented copper/magneso-zinc titanate nanostructures as biocidal agents for inactivation of pathogens during wastewater disinfection

2020

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“…5(b) and (c), the depressions on the surface of the cutting and the pores were filled with oil. As the oil content increased, the intensity of absorption effects increased, meanwhile the surface of the cutting gradually becomes flat and the intensity of scattering effects decreased [23]. Therefore, after the THz wave passes through the cutting, THz signal was deeply affected by the scattering effect and the absorption effect.…”

Section: Resultsmentioning

confidence: 99%

Optical Detection of Oil Bearing in Reservoir Rock: Terahertz Spectroscopy Investigation

et al. 2019

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To accurately reflect the physical properties of the reservoir, it is necessary to use a variety of techniques to evaluate the reservoir, due to the complexity of the reservoir. In this paper, the oil is dripped into the rock to simulate the reservoir, and the transmission properties of the terahertz (THz) wave in the reservoir were studied. The extinction coefficient of rock was a key parameter for comprehending the properties of mineral and organic matter. The higher the frequency was, the larger the extinction coefficient was. The extinction coefficient was composed of the absorption and the scattering, which the latter played a more important role. The results revealed the transmission properties of the THz wave in rock, which can help in improving the efficiency of terahertz time domain spectroscopy (THz-TDS) and enriching the method of oil field exploration.

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“…Recently, the terahertz (THz) spectrum has also been used in geological investigations [24,25]. THz radiation can penetrate nonpolar materials and exhibits strong absorption when it encounters proteins, polar organics, and others [26][27][28][29][30]. The deposition of organic matter is an important index used to investigate geological evolution.…”

Section: Introductionmentioning

confidence: 99%

Terahertz Dating of Sedimentary Rocks

et al. 2022

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The depositional products of sedimentary rocks provide vital references for investigating the paleoenvironment, paleogeography, and tectonic evolution history. However, the detection methods of geological evolution are still relatively complicated, and how to combine geological age and geological evolution is confusing. Based on the sensitivity of terahertz waves to organic matter, a THz dating method was introduced for characterizing the geological age of sedimentary rocks. In this study, the geological evolution of Liujiang Basin was analyzed by using terahertz time domain spectroscopy (THz-TDS). According to the close relation between organic matter content and sedimentary environment, it can be inferred that the geological deposition in this area is affected by Marine cover. In addition, the refractive index of Ordovician sedimentary rocks is significantly higher than that of other sedimentary rocks. Based on these results, it is inferred that the sedimentary environment of the Liujiang Basin gradually changed from continental deposition to deep-water marine deposition from the Neoproterozoic to the Ordovician, and the sea water gradually retreated due to the crustal movement, resulting in a transition from deep-water deposition to continental inshore ocean facies deposition. These findings are highly consistent with the geological history of the study area. Combined with principal component analysis (PCA) technology, the relative geological age of sedimentary rocks can be divided. Our study con-firmed the reliability of this THz dating technique, which provides an effective way to study the geological evolution history of sedimentary rocks.

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The mechanism of the terahertz spectroscopy for oil shale detection

Cited by 34 publications

References 30 publications

High performance of talented copper/magneso-zinc titanate nanostructures as biocidal agents for inactivation of pathogens during wastewater disinfection

High performance of talented copper/magneso-zinc titanate nanostructures as biocidal agents for inactivation of pathogens during wastewater disinfection

Optical Detection of Oil Bearing in Reservoir Rock: Terahertz Spectroscopy Investigation

Terahertz Dating of Sedimentary Rocks

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