Nanoscale mineralogy and organic structure characterization of shales: Insights via AFM-IR spectroscopy
Abstract view|117|times PDF download|88|times
Abstract
Atomic force microscopy coupled with infrared spectroscopy (AFM-IR) is one of the most effective and widely employed mixed techniques capable of providing direct access to infrared spectroscopic imaging and chemical analysis at the nanoscale spatial resolution. In this communication, AFM-IR was applied to the evaluate the in-situ nanoscale mineralogy and to characterize the organic structure of shale. Significant chemical and microstructural heterogeneity could be observed on the mirror-like surface of naturally deformed shale. It was also apparent that slickensides formed on the mirror-like surface potentially influence the spatial distribution of organic matter. This technique provides an effective combination for direct and in-situ studies of the morphology and physicochemical properties of geological rocks at the nanoscale, opening a new avenue for investigations to help reveal some complex geological phenomena, such as organic carbon graphitization and mineral transformation during fault deformation. Furthermore, this technique makes it possible to determine the chemical composition, molecular structure and functional group information of shale organic matter, which is crucial information for investigating the hydrocarbon generation potential, maturity evaluation, and oil and gas migration mechanisms in shale.
Document Type: Short communication
Cited as: Zhu, H., Lu, Y., Pan, Y., Qiao, P., Raza, A., Liu, W. Nanoscale mineralogy and organic structure characterization of shales: Insights via AFM-IR spectroscopy. Advances in Geo-Energy Research, 2024, 13(3): 231-236. https://doi.org/10.46690/ager.2024.09.08
Keywords
Full Text:
PDFReferences
Abarghani, A., Gentzis, T., Shokouhimehr, M., et al. Chemical heterogeneity of organic matter at nanoscale by AFM-based IR spectroscopy. Fuel, 2020, 261: 116454.
Dazzi, A., Prater, C. B. AFM-IR: Technology and applications in nanoscale infrared spectroscopy and chemical imaging. Chemical Reviews, 2017, 117(7): 5146-5173.
Gao, M., Yang, M., Lu, Y., et al. Mechanical characterization of uniaxial compression associated with lamination angles in shale. Advances in Geo-Energy Research, 2024, 13(1): 56-68.
Gou, Q., Xu, S., Hao, F., et al. Evaluation of the exploration prospect and risk of marine gas shale, southern China: A case study of Wufeng-Longmaxi shales in the Jiaoshiba area and Niutitang shales in the Cen’gong area. GSA Bulletin, 2022, 134: 1585-1602.
Liu, Z., Zeng, H., Xu, K., et al. AFM-IR probing the influence of polarization on the expression of proteins within single macrophages. Journal of Materials Chemistry B, 2021, 9(12): 2909-2917.
Mathurin, J., Deniset-Besseau, A., Bazin, D., et al. Pho tothermal AFM-IR spectroscopy and imaging: Status, challenges, and trends. Journal of Applied Physics, 2022, 131(1): 010901.
Phan, V., Rebois, R., Beck, P., et al. Nanoscale mineralogy and organic structure in Orgueil (CI) and EET 92042 (CR) carbonaceous chondrites studied with AFM-IR spectroscopy. Meteoritics & Planetary Science, 2022, 57(1): 3-21.
Phan, V., Rebois, R., Beck, P., et al. Chemical functional characterization of immature and mature coals at the nanoscale by atomic force microscopy-based infrared spectroscopy (AFM-IR). International Journal of Coal Geology, 2023, 267: 104196.
Schwartz, J. J., Jakob, D. S. , Centrone, A. A guide to nanoscale IR spectroscopy: resonance enhanced transduction in contact and tapping mode AFM-IR. Chemical Society Reviews, 2022, 51(13): 5248-5267.
Swiech, D., Kollbek, K., Jabłoński, P., et al. Exploring the nanoscale: AFM-IR visualization of cysteine adsorption on gold nanoparticles. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2024, 318: 124433.
Wang, K., Ma, L., Taylor, K. G. Nanoscale geochemical heterogeneity of organic matter in thermally-mature shales: An AFM-IR study. Fuel, 2022, 310: 122278.
Wang, Y., Xu, S., Hao, F., et al. Multiscale petrographic heterogeneity and their implications for the nanoporous system of the Wufeng-Longmaxi shales in Jiaoshiba area, Southeast China: Response to depositional-diagenetic process: Geological Society of America Bulletin, 2020, 132: 1704-1721.
Zhou, H., Tang, Y., Zhang, S. Advanced spectroscopic technique for the study of nanocontainers: Atomic force microscopy-infrared spectroscopy (AFM-IR). In: Smart Nanocontainers. Elsevier, pp. 7-17, 2020.
Zhu, H., Ju, Y., Qi, Y., et al. Impact of tectonism on pore type and pore structure evolution in organic-rich shale: Implications for gas storage and migration pathways in naturally deformed rocks. Fuel, 2018, 228: 272-289.
Zhu, H., Huang, C., Ju, Y., et al. Multi-scale multi-dimensional characterization of clay-hosted pore networks of shale using FIBSEM, TEM, and Xray micro-tomography: Implications for methane storage and migration deformed rocks. Applied Clay Science 2021, 213: 106239.
DOI: https://doi.org/10.46690/ager.2024.09.08
Refbacks
- There are currently no refbacks.
Copyright (c) 2024 The Author(s)
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.