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Nanoscale Characterization
Published in Ram K. Gupta, Sanjay R. Mishra, Tuan Anh Nguyen, Fundamentals of Low Dimensional Magnets, 2023
Arvind Kumar, Swati, Manish Kumar, Neelabh Srivastava, Anadi Krishna Atul
Diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) is a convenient technique commonly used for the analysis of samples that can be ground into a fine powder (less than 10 microns) and mixed with an IR transparent material like potassium bromide (KBr) [61]. The IR beam incident on the sample cup containing a mixture of IR transparent material and sample is reflected from their surface, causing light to diffuse and scatter as it moves throughout the sample. The detector collects the interferogram signal, which is then used to generate the spectrum. Mei Chen et al. [62] performed an in-situ DRIFTS technique to study the NO2 sensing mechanism of flower-like and tube-like ZnO nanomaterials. A study suggests that the NO2 response process mainly included electron transfer on the donor sites and/or the participation of surface oxygen species to form the nitrate species.
FT-IR Spectroscopy
Published in Terrance E. Conners, Sujit Banerjee, Surface Analysis of Paper, 2020
Michael A. Friese, Sujit Banerjee, Patrice J. Mangin
Diffuse Reflectance Infrared Fourier Transform Spectroscopy, or DRIFTS, is another sampling technique used for studying solid samples. It is easier to use and requires less equipment than that needed to prepare a KBr pellet. However, it can be more difficult to obtain sharp, clear spectra. Sample preparation is easy compared to the neat film or KBr pellet techniques. The general steps taken during analysis are as follows. In the initial stages, one of two approaches is usually taken. The sample is either ground, mixed with KBr and placed in the sample holder, or it is cut to fit the holder. Once in place, the sample is scanned. Ground KBr, if used, should be used to collect a background spectrum prior to analysis.
Asbestiform minerals in ophiolitic rocks of Calabria (southern Italy)
Published in International Journal of Environmental Health Research, 2018
Antonella Campopiano, Angelo Olori, Alessandra Spadafora, Maria Rosaria Bruno, Federica Angelosanto, Antonino Iannò, Stefano Casciardi, Renato Giardino, Maurizio Conte, Teresa Oranges, Sergio Iavicoli
FTIR spectra were obtained using diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). The operative parameters of the instrument were: acquisition range 4000–400 cm−1, resolution 4 cm−1, and 32 scans.