China
Africa
Explore chapters and articles related to this topic
Materials Characterization Using Advanced Synchrotron Radiation Techniques for Antimicrobial Materials
Published in Peerawatt Nunthavarawong, Sanjay Mavinkere Rangappa, Suchart Siengchin, Mathew Thoppil-Mathew, Antimicrobial and Antiviral Materials, 2022
Chatree Saiyasombat, Prae Cbirawatkul, Suittipong Wannapaiboon, Catleya Rojviriya, Siriwat Soontaranon, Nuntaporn Kamonsutthipaijit, Sirinart Chio-Srichan, Chanan Euaruksakul, Nichada Jearanaikoon
The basic principle of Fourier-transform infrared spectroscopy (FTIR) spectroscopy is the measurement of infrared radiation emitted or absorbed by a sample. The absorption of specific wavelengths upon interacting with specific molecular bonding happens when the frequency of the IR radiation matches the molecular resonant frequency. The absorbed wavelength ranges can be measured and represented in identifiable peaks. Thus, it is possible to determine the significant chemical bonding present in the sample [37].
Nanomaterials in the Environment: Definitions, Characterizations, Effects, and Applications
Published in Chaudhery Mustansar Hussain, Gustavo Marques da Costa, Environmental, Ethical, and Economical Issues of Nanotechnology, 2022
Daniela Patricía Freire Bonfim, Gabriela Brunosi Medeiros, Alessandro Estarque de Oliveira, Vddila Giovana Guerra, Mônica Lopes Aguiar
Fourier-transform infrared spectroscopy (FTIR) allows the identification of the elements that make up the analyzed sample, in addition to providing information on the molecular organization and interaction mechanisms. The FTIR principle is the absorption of radiation in the infrared region (above 780 nm). Each type of connection and interaction between elements has a vibrational energy that is related to absorption in the infrared, producing a characteristic spectrum. Thus, it is possible to identify the elements and types of connections present in the analyzed material.
Glossary of scientific and technical terms in bioengineering and biological engineering
Published in Megh R. Goyal, Scientific and Technical Terms in Bioengineering and Biological Engineering, 2018
Fourier transform infrared spectroscopy (FTIR) is a technique which is used to obtain an infrared spectrum of absorption, emission, photoconductivity or Raman scattering of a solid, liquid or gas. An FTIR spectrometer simultaneously collects spectral data in a wide spectral range. The term Fourier transform infrared spectroscopy originates from the fact that a Fourier transform (a mathematical process) is required to convert the raw data into the actual spectrum.
Effect of molar concentration on the physical properties of NiS thin film prepared by spray pyrolysis method for supercapacitors
Published in Inorganic and Nano-Metal Chemistry, 2022
Abdelouahab Gahtar, Said Benramache, Abdelkader Ammari, Abdelwaheb Boukhachem, Aicha Ziouche
The Fourier transform infrared spectroscopy (FTIR), is known as one of the well useful methods to get insights on the chemical bonding and identify the material elemental constituents. Figure 7 shows the FTIR spectra of NiS films prepared with 0.03, 0.05, and 0.07 M. The peak observed at 665 cm−1 is attributed to NiS stretching vibration.[28–31] The bands nearby 881 and 1037 cm−1 are attributed to C–S bonds vibrations.[19,29,30] The band at 2363 cm − 1 is due to C=O stretching vibration of adsorbed CO2 from the ambient atmosphere.[32] The bands observed at 1454 and 2922 cm−1 are assigned to C–H vibrations.[28,32,33] The absorption bands observed at 1615 and 3430 cm−1 corresponding to the vibration of O–H bonds indicate the presence of adsorbed H2O molecules.[34]
Green synthesis of cobalt-oxide nanoparticles with an endemic species Allium tuncelianum and anticancer activity
Published in Inorganic and Nano-Metal Chemistry, 2021
Fourier transform infrared spectroscopy (FTIR) is a technique which is used to analyses the chemical composition of many materials, inorganics and minerals. FTIR measurements were carried out to identify the possible biomolecules responsible for capping and efficient stabilization of the metal NPs synthesized by A. tuncelianum extract. The results of FTIR analysis of this study show different stretches of bonds shown at different peaks 3460–2910, 2242–1950, 1634, 1453, 1415, 1126, 1067, 1027 and 989 cm−1 corresponds to stretching vibrations of N–H, C–H, O–H, C≡C, C = C, C = O groups of biomolecules (Figure 2). FTIR spectra of Co3O4-NPs exhibited prominent peaks at 1037, 1001, 960, 908, 656 and 551 cm−1 (Figure 2).
Synthesis and characterisation of rubber seed oil trans-esterified biodiesel using cement clinker catalysts
Published in International Journal of Sustainable Energy, 2019
V. Aarathi, E. Harshita, Atira Nalinashan, Sidharrthh Ashok, R. Krishna Prasad
The Fourier transform infrared spectroscopy (FTIR) is an instrumental technique used to obtain an infrared spectrum for solid, liquid or gas. The FTIR spectrometer collects spectral data for a wide range of spectra. The FTIR was used for characterisation of the biodiesel and glycerol obtained by the transesterification of rubber seed oil. The glycerol and biodiesel obtained were analysed using Thermofischer Scientific FTIR Nicolet iS10 using KBr pellets in the range 500–4000 cm−1. The FTIR spectra of biodiesel obtained using CaO and cement clinker catalyst are shown in Figures 5 and 6, respectively. The FTIR spectrum of glycerol is shown in Figure 7.