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Journal articles on the topic 'In situ FT-IR analysis'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Hazel, G., F. Bucholtz, I. D. Aggarwal, G. Nau, and K. J. Ewing. "Multivariate Analysis of Mid-IR FT-IR Spectra of Hydrocarbon-Contaminated Wet Soils." Applied Spectroscopy 51, no. 7 (1997): 984–89. http://dx.doi.org/10.1366/0003702971941359.

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This article describes a series of mid-IR FT-IR reflectance spectroscopy measurements of hydrocarbon-contaminated wet soils. The eventual goal of this work is the development of an analysis tool suitable for real-time in situ underground measurements where a suitable reference spectrum is not available. Multivariate analysis of the resulting spectral data indicates that the strongly varying wet soil matrix and the absence of a suitable reference spectrum in the field do not render this measurement technique unfeasible as a means of realizing remote in situ chemical detection in wet soils. It w

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2

Sullivan, David H., W. Curtis Conner, and Michael P. Harold. "Surface Analysis with FT-IR Emission Spectroscopy." Applied Spectroscopy 46, no. 5 (1992): 811–18. http://dx.doi.org/10.1366/0003702924124844.

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The technique of infrared emission spectroscopy (IRES) is reviewed and further examined in this study as a surface analysis tool. A system has been designed which allows simultaneous kinetic and in situ infrared emission analysis of catalyst surfaces. IRES spectra of several gas mixture/solid systems are obtained in order to examine sample preparation and spectra processing issues; these systems include Pt/Al2O3 exposed to CO and CO-NO mixtures, an oxidized copper plate, and a zeolite exposed to inert atmospheres. For the temperature range of importance to catalysis (300–600 K), IRES is limite

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3

Paruchuri, Vamsi K., Keqing Fa, Brij M. Moudgil, and Jan D. Miller. "Adsorption Density of Spherical Cetyltrimethylammonium Bromide (CTAB) Micelles at a Silica/Silicon Surface." Applied Spectroscopy 59, no. 5 (2005): 668–72. http://dx.doi.org/10.1366/0003702053945949.

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In situ Fourier transform infrared internal reflection spectroscopy (FT-IR/IRS) was used to calculate the adsorption density values for spherical cetyltrimethylammonium bromide (CTAB) micelles at the silica/silicon (SiO2/Si) surface based on a previously developed adsorption density equation. Recent advances in atomic force microscopy (AFM) imaging methodology have led to the ability to image surface micelles, which was not possible previously. These AFM images have been used to independently calculate adsorption density values through offline fast Fourier transform (FFT) analysis. The adsorpt

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4

Dombi, A., Z. A. Fekete, and I. Kiricsi. "In situ photocatalytic reactor with FT-IR analysis for heterogeneous catalytic studies." Applied Catalysis A: General 193, no. 1-2 (2000): L5—L8. http://dx.doi.org/10.1016/s0926-860x(99)00449-4.

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Kolašinac, Stefan M., Marko Mladenović, Ilinka Pećinar, et al. "Raman and FT-IR Spectroscopy Coupled with Machine Learning for the Discrimination of Different Vegetable Crop Seed Varieties." Plants 14, no. 9 (2025): 1304. https://doi.org/10.3390/plants14091304.

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The aim of this research is to investigate the potential of Raman and FT-IR spectroscopy as well as mathematical linear and non-linear models as a tool for the discrimination of different seed varieties of paprika, tomato, and lettuce species. After visual inspection of spectra, pre-processing was applied in the following combinations: (1) smoothing + linear baseline correction + unit vector normalization; (2) smoothing + linear baseline correction + unit vector normalization + full multiplicative scatter correction; (3) smoothing + baseline correction + unit vector normalization + second-orde

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Le Vine, Steven M., and David L. Wetzel. "FT-IR microspectroscopic analysis of diseased white matter brain tissues." Proceedings, annual meeting, Electron Microscopy Society of America 53 (August 13, 1995): 968–69. http://dx.doi.org/10.1017/s0424820100141214.

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In situ FT-IR microspectroscopy has allowed spatially resolved interrogation of different parts of brain tissue. In previous work the spectrrscopic features of normal barin tissue were characterized. The white matter, gray matter and basal ganglia were mapped from appropriate peak area measurements from spectra obtained in a grid pattern. Bands prevalent in white matter were mostly associated with the lipid. These included 2927 and 1469 cm-1 due to CH2 as well as carbonyl at 1740 cm-1. Also 1235 and 1085 cm-1 due to phospholipid and galactocerebroside, respectively (Figs 1and2). Localized chem

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Kellar, Jon J., W. M. Cross, and J. D. Miller. "Adsorption Density Calculations from in Situ FT-IR/IRS Data at Dilute Surfactant Concentrations." Applied Spectroscopy 43, no. 8 (1989): 1456–59. http://dx.doi.org/10.1366/0003702894204100.

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Adsorption densities of the surfactant oleate at the surface of a fluorite crystal have been calculated from in situ FT-IR internal reflection spectroscopic (1RS) data at very low surfactant concentrations. For the first time, a complete adsorption isotherm (5 × 10−7 to 5 × 10−4 M) has been calculated from the in situ spectral data with the use of internal reflection theory. It was found that monolayer coverage occurred at very low surfactant concentrations (<10−5 M), while at higher bulk concentrations, adsorption consists of multilayers of what appears to be surface-precipitated calcium d

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8

Yang, Peng Fei, Jun Ying Li, and Tian Duo Li. "Characterization on Propylene Oxide Polymerization with In Situ FT-IR." Advanced Materials Research 160-162 (November 2010): 60–64. http://dx.doi.org/10.4028/www.scientific.net/amr.160-162.60.

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In-situ FT-IR technique is used to investigate the polymerization of propylene oxide with potassium t-butoxide as initiator. The epoxy absorbance at 828 cm-1 is the most useful peaks to monitor the reaction. The absorbance of C-O-C stretching vibration at 1107 cm-1 is very strong and also very useful. Yet, the absorbance of C-H stretching vibration in 3000~2800 cm-1 region is very weak and not reliable for In-situ FT-IR analysis. By monitoring the consumption of propylene oxide, the polymerization rate constant k at 33°C was calculated out and an interesting auto acceleration phenomenon was di

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9

Piticescu, Roxana M., Gabrielle Charlotte Chitanu, Mihaela Albulescu, Maria Giurginca, Madalina Laura Popescu, and Witold Łojkowski. "Hybrid HAp-Maleic Anhydride Copolymer Nanocomposites Obtained by In Situ Functionalisation." Solid State Phenomena 106 (September 2005): 47–56. http://dx.doi.org/10.4028/www.scientific.net/ssp.106.47.

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The aim of the work is to establish if maleic anhydride copolymer acts as a grain growth modulator and/or as a biocompatible functionalisation agent for hydroxyapatite. Experimental work was developed in three directions: nanocomposites synthesis, nanocomposites characterization and citotoxicity tests on nanocomposites. Maleic anhydride copolymer – HAp nanocomposites were prepared by in situ functionalisation in hydrothermal conditions and were characterized by chemical quantitative analysis, XRD, FT-IR, SEM, specific surface area and picnometric densities. Chemical bonding between the copolym

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10

Maleki, Ali, Hamed Movahed, Parisa Ravaghi, and Tooraj Kari. "Facile in situ synthesis and characterization of a novel PANI/Fe3O4/Ag nanocomposite and investigation of catalytic applications." RSC Advances 6, no. 101 (2016): 98777–87. http://dx.doi.org/10.1039/c6ra18185f.

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A novel magnetic hybrid nanocomposite was successfully synthesized via in situ polymerization, well characterized by FT-IR, XRD, EDX and FE-SEM analysis, and its catalytic activity shown in the synthesis of pharmaceutically important pyrans.

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11

Dluhy, Richard A., Melody L. Mitchell, Thomas Pettenski, and Jeffery Beers. "Design and Interfacing of an Automated Langmuir-Type Film Balance to an FT-IR Spectrometer." Applied Spectroscopy 42, no. 7 (1988): 1289–93. http://dx.doi.org/10.1366/0003702884430047.

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We report the design of a surface analysis accessory that allows for the use of external reflection FT-IR spectroscopy to investigate the structure of insoluble monolayer films in situ at the air/water interface. The Langmuir film balance constructed for this purpose is optimized to contain the monolayer film at the focal point of the infrared beam, as well as to generate high surface pressures within the film. The optical interfacing of the film balance to an FT-IR spectrometer is also described. Results are presented for a representative surface pressure/molecular area isotherm and infrared

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12

Meunier, F. C. "Pitfalls and benefits of in situ and operando diffuse reflectance FT-IR spectroscopy (DRIFTS) applied to catalytic reactions." Reaction Chemistry & Engineering 1, no. 2 (2016): 134–41. http://dx.doi.org/10.1039/c5re00018a.

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13

White, David C. "Environmental effects testing with quantitative microbial analysis: Chemical signatures correlated within situ biofilm analysis by FT/IR." Toxicity Assessment 1, no. 3 (1986): 315–38. http://dx.doi.org/10.1002/tox.2540010305.

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14

Compton, David A. C., Stephen L. Hill, Norman A. Wright, et al. "In Situ FT-IR Analysis of a Composite Curing Reaction Using a Mid-Infrared Transmitting Optical Fiber." Applied Spectroscopy 42, no. 6 (1988): 972–79. http://dx.doi.org/10.1366/0003702884430317.

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The use of a mid-infrared transmitting fiber to carry the infrared beam of an FT-IR spectrometer outside of the optical bench is reported. In addition it is demonstrated that it is possible to analyze samples using the fiber as an internal reflection element. The fiber is covered with a protective coating which can be removed for a short region, to allow contact with the sample over a controlled length. Two examples of the use of an optical fiber for remote sampling are discussed. The first shows that a spectrum of a liquid sample (2-butanone) can be easily measured, and the second shows how a

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15

Yuvaraj, Haldorai, Min Hee Woo, Eun Ju Park, Yeong-Soon Gal, and Kwon Taek Lim. "A Facile Synthesis of Poly(3-octylthiophene)-Titanium Dioxide Nanocomposite Particles in Supercritical CO2." Journal of Nanoscience and Nanotechnology 8, no. 9 (2008): 4743–46. http://dx.doi.org/10.1166/jnn.2008.ic60.

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Poly(3-octylthiophene) (P3OT)-titanium dioxide (TiO2) nanocomposite powder where TiO2 was embedded with homogeneous dispersion was synthesized by in-situ chemical oxidative polymerization of 3-octylthiophene in the presence of TiO2 nanoparticles in supercritical carbon dioxide (scCO2), using ferric chloride as the oxidant. The synthesized materials could be obtained as dry powder upon venting of CO2 after the polymerization. The composites were subsequently characterized by FT-IR spectroscopy, transmission electron microscopy (TEM), X-ray diffraction studies (XRD), thermogravimetric analysis (

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16

Yao, Siyu, Gonzalo Miyagusuku-Cruzado, Megan West, et al. "Nondestructive and Rapid Screening of Aflatoxin-Contaminated Single Peanut Kernels Using Field-Portable Spectroscopy Instruments (FT-IR and Raman)." Foods 13, no. 1 (2024): 157. http://dx.doi.org/10.3390/foods13010157.

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A nondestructive and rapid classification approach was developed for identifying aflatoxin-contaminated single peanut kernels using field-portable vibrational spectroscopy instruments (FT-IR and Raman). Single peanut kernels were either spiked with an aflatoxin solution (30 ppb–400 ppb) or hexane (control), and their spectra were collected via Raman and FT-IR. An uHPLC-MS/MS approach was used to verify the spiking accuracy via determining actual aflatoxin content on the surface of randomly selected peanut samples. Supervised classification using soft independent modeling of class analogies (SI

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Ozaki, Y., F. Kaneuchi, T. Iwamoto, M. Yoshiura, and K. Iriyama. "Nondestructive Analysis of Biological Materials by FT-IR-ATR. Method I: Direct Evidence for the Existence of Collagen Helix Structure in Lens Capsule." Applied Spectroscopy 43, no. 1 (1989): 138–41. http://dx.doi.org/10.1366/0003702894201789.

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FT-IR spectra were measured in situ for an albino rabbit lens capsule by use of the ATR method, and the spectrum of water was subtracted. The obtained difference spectra resemble the spectrum of purified Type IV collagen in aqueous solution and show intense bands at 1637 and 1553 cm−1 assignable to the amide I and II modes, respectively. These frequencies are very close to those of the amide I and II bands of a 31 helix. This is direct evidence for the existence of the so-called collagen helix (a slightly modified 31 helix) in the lens capsule. FT-IR spectra were also measured by the diffuse r

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18

Seccatto, Cássia Patrícia, Jaldair Araujo e. Nobrega, Rozanna Marques Muzzi, and Rodrigo Luiz Simas de Aguiar. "APLICAÇÃO DA ESPECTROSCOPIA FT-IR E RAMAN PARA CARACTERIZAÇÃO DE SOLO OBTIDO EM ESCAVAÇÃO NO SÍTIO ARQUEOLÓGICO TEMPLO DOS PILARES, MATO GROSSO DO SUL." CLIO – Arqueológica 36, no. 1 (2021): 128. http://dx.doi.org/10.51359/2448-2331.2021.250748.

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O presente estudo buscou determinar através da técnica FT-IR e Raman, características do solo coletado no sítio arqueológico ‘Templo dos Pilares’ localizado no município de Alcinópolis. Através da análise de FT-IR, pode-se observar que os átomos de compostos orgânicos podem ter sua vibração com amplitude aumentada ao redor das ligações covalentes que os ligam, nesse processo cada mudança de nível de energia vibracional corresponde uma série de mudanças de níveis de energia rotacional e assim originando as bandas com diferentes comprimentos de ondas observadas no espectro.APPLICATION OF FT-IR A

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19

Arora, Shivani, Khusi Chouksey, Trapti Shrivastava, and Kuldeep Ganju. "Formulation and Characterization of Intranasal Mucoadhesive Gel of Antiallergic Drug Loratadine for Improved Bioavailability." Journal of Drug Delivery and Therapeutics 15, no. 1 (2025): 67–72. https://doi.org/10.22270/jddt.v15i1.6952.

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The present study aimed to formulate and characterize an intranasal mucoadhesive gel of loratadine to enhance its bioavailability. Loratadine, an antihistamine, is commonly used for the treatment of allergic conditions, but its low bioavailability due to extensive first-pass metabolism can limit its effectiveness. To address this issue, an in situ gel formulation was developed using Poloxamer 407 and Carbopol 934 as excipients. The gel's physicochemical properties, including pH, drug content, viscosity, gel strength, gelation temperature, and drug release profile, were evaluated. FT-IR analysi

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Chen, Na Li, Hui Xia Feng, Jing Wei Guo, He Ming Luo, and Jian Hui Qiu. "Biodegradable Poly(lactic Acid)/TDI-Montmorillonite Nanocomposites: Preparation and Characterization." Advanced Materials Research 221 (March 2011): 211–15. http://dx.doi.org/10.4028/www.scientific.net/amr.221.211.

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Activated montmorillonite(MMT) was modified by toluene diisocyanate(TDI) and TDI-montmorillonite(TDI-MMT) was prepared. The characterization of TDI-MMT was carried out by X-ray diffraction(XRD) and fourier transform infrared spectrometry (FT-IR). The results showed that TDI had been inserted to the interlayer of MMT and the interlayer spacing of MMT increased by 0.26nm. With stannous chloride as catalyst, the biodegradable polylactide acid/TDI-montmorillonite(PLA/TDI-MMT) nanocomposites were synthesized through ring-opening polymerization of lactide in the layer of TDI-MMT by in-situ polymeriz

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Ling, Zhigang, Naruhito Hori, Tadahisa Iwata, and Akio Takemura. "In-situ Analysis of Chemical Structure ofAPI Adhesive Using FT-NIR Spectroscopy." Journal of The Adhesion Society of Japan 51, s1 (2015): 322–31. http://dx.doi.org/10.11618/adhesion.51.322.

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22

Budevska, Boiana O., Stephen T. Sum, and Todd J. Jones. "Application of Multivariate Curve Resolution for Analysis of FT-IR Microspectroscopic Images of in Situ Plant Tissue." Applied Spectroscopy 57, no. 2 (2003): 124–31. http://dx.doi.org/10.1366/000370203321535015.

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The chemometric techniques of multivariate curve resolution (MCR) are aimed at extracting the spectra and concentrations of individual components present in mixtures using a minimum set of initial assumptions. We present results from the application of alternating least squares (ALS) based MCR to the analysis of hyperspectral images of in situ biological material. The spectra of individual pure components were mathematically extracted and then identified by searching the spectra against a commercial library. No prior information about the chemical composition of the material was used in the da

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Jackson, P., K. Robinson, G. Puxty, and M. Attalla. "In situ Fourier Transform-Infrared (FT-IR) analysis of carbon dioxide absorption and desorption in amine solutions." Energy Procedia 1, no. 1 (2009): 985–94. http://dx.doi.org/10.1016/j.egypro.2009.01.131.

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Rajeswari, R., and K. Jeyaprakash. "Bioactive potential analysis of brown seaweed Sargassum wightii using UV-VIS and FT-IR." Journal of Drug Delivery and Therapeutics 9, no. 1 (2019): 150–53. http://dx.doi.org/10.22270/jddt.v9i1.2199.

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The current study was investigated to explore the biogenic molecules of Sargassum wightii collected from the south east of Tamil Nadu, India. The biogenic molecules extracted from Sargassum wightii by using methanol as a solvent and the analysis was carried out by using UV-Visible spectroscopy and FT-IR. The UV-Visible spectrum of the methanolic extract of Sargassum wightii exposed the existence of the biogenic molecules separated from 200 - 1100 nm among the absorption. The incidence of peaks from 234-676 nm discovered the presence of flavonoids and its derivatives. The unprocessed methanolic

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Li, Chen, Yan Hong Tian, and Xue Jun Zhang. "Effect of Zinc Ion on the Electrochemical and Thermal Performance of Polyaniline/Activated Carbon Composites Prepared by In Situ Emulsion Polymerization." Advanced Materials Research 721 (July 2013): 8–11. http://dx.doi.org/10.4028/www.scientific.net/amr.721.8.

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Using dodecyl benzenesulfonic acid (DBSA) as surfactant, composites of polyaniline (PANI)/activated carbon (AC) with core-shell structures were prepared by in situ emulsion polymerization in the presence of different concentrations of zinc ion. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) analysis and Fourier-transform IR (FT-IR) spectroscopy were used to analyze morphologies and structures of the composites. Thermal stability of the composites was investigated by thermogravimetric analysis (TGA).The electrochemical properties of PANI/AC c

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Liu, Chang Yu, Shu Liang Wang, Jian Li, and Cheng Yu Wang. "Synthesis and Character of Amphiphobic Calcium Carbonate Nanoparticles In Situ." Advanced Materials Research 295-297 (July 2011): 1675–79. http://dx.doi.org/10.4028/www.scientific.net/amr.295-297.1675.

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Amphiphobic vaterite with a size of about 50 nm, was prepared via crystallization of CaCO3with perfluorooctane surfapropyl betaine（DF-921）in methanol by mimicking the process of biomineralization. The products were analyzed by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and contact angle analysis. The results indicate that the CaCO3powder samples had both hydrophobic and oleophobic properties. The DF-921 used in this research not only controlled the crystal type of the CaCO3particles but also changed the surface properties of the

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Wang, Cheng Yu, Chang Yu Liu, and Jian Li. "Preparation of Hydrophobic CaCO₃-Wood Composite In Situ." Advanced Materials Research 113-116 (June 2010): 1712–15. http://dx.doi.org/10.4028/www.scientific.net/amr.113-116.1712.

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The preparation of hydrophobic CaCO3-wood composite through a double-diffusive method using dodecanoic acid as organic substrate is demonstrated. The product was characterized by the contact angle analysis, X-ray diffraction (XRD), fourier transform infrared spectroscopy (FT-IR) and scanning electron microscope (SEM). The mechanical properties of the product were measured. The results show that the synthesized CaCO3 fills in the wood cell and covers the surface of wood. The CaCO3-wood composite is hydrophobic. The mechanical properties of wood composite have significantly increased.

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Bandekarc, Jagdeesh, Rustam Sethna, and Mark Kirschner. "Quantitative Determination of Sulfur Oxide Species in White Liquor by FT-IR." Applied Spectroscopy 49, no. 11 (1995): 1577–82. http://dx.doi.org/10.1366/0003702953965795.

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The Circle® cell has made possible the quantitative analysis of samples by infrared spectroscopy in aqueous solutions. With the use of this technique, which makes use of an FT-IR spectrometer, a novel analytical method is presented for the quantitative determination of sulfur oxide anions in white liquor. The method is appropriate only for oxidized sulfur species. However, it is shown that when Na2S concentrations are determined by another technique (e.g., ion chromatography or ion-selective electrode), the results can be used to carry out material/species balance on the unoxidized as well as

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Zhao, Dong Yu, Zheng Jin, Xue Qin Yang, and Xiao Ying Jia. "Preparation and Properties of Carbon Nanotube / Polyaniline Nanocomposites." Advanced Materials Research 391-392 (December 2011): 13–17. http://dx.doi.org/10.4028/www.scientific.net/amr.391-392.13.

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Aniline monomer coated on the nanotubes in HCl solution was used to prepare a composite of multi-wall carbon nanotube/polyaniline (MWCNT/PANI) by in-situ polymerization. Multi-wall carbon nanotubes were treated by the mixed acid (HNO3:H2SO4in a ratio of 1:3). The content of MWCNT in the samples was 0-20 wt%. The nanocomposites were characterized by Thermogravimetric analysis (TGA), Fourier transform-infrared spectroscopy (FT-IR), Raman spectroscopy and scanning electron microscopy. The mechanical properties of the MWCNT/PANI nanocomposites were also measured. The results showed that the MWCNT

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Liu, Fei, Yong Jun He, and Jeung Soo Huh. "Study on the Synthesis and Characterization of PANi/Nano-CeO₂ Composites." Solid State Phenomena 124-126 (June 2007): 287–90. http://dx.doi.org/10.4028/www.scientific.net/ssp.124-126.287.

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The nano-CeO2 was synthesized by two-step solid-phase reaction. The image of TEM showed that nano-CeO2 with an average size of about 70 nm. The series of polyaniline/nano-CeO2 composites with different PANi: CeO2 ratios were prepared by in-situ polymerization in the presence of hydrochloric acid (HCl) as dopant by adding nano-CeO2 into the polymerization reaction mixture of aniline. The composites obtained were characterized by FT-IR and UV-vis spectroscopy analysis. The FT-IR spectra of nanocomposites indicate different blue-shifts, attributed to C–N stretching mode for benzenoid unit. The UV

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Chernyshova, I. V., and V. P. Tolstoy. "New Technique for ATR/FT-IR Spectra Measurements of Adsorbed Layers on a Solid-Phase/Liquid Boundary." Applied Spectroscopy 49, no. 5 (1995): 665–71. http://dx.doi.org/10.1366/0003702953964110.

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An ATR/FT-IR technique is described which employs thermoplastic halcogenide glass with a low melting point to bring a solid plate (or a film) into optical contact with the ATR element. The sensitivity of the ATR/FT-IR method with one reflection was one-tenth of a surface monolayer. It was achieved by obtaining spectra at critical angles of incident radiation. Such an approach allows the study of in situ solid/liquid interfaces, where a solid may be relatively opaque over the IR range. The intensity and frequency of the ATR band δs(H2O) are found to depend strongly on wetting properties of the

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Lee, Hwang-Jo, Hyeon-Su Yu, Won-Sik Han, Myoung-Soo Son, and Koang-Chul Wi. "A Non-Destructive Analysis of Excavated Fabric Artifacts from An Unclaimed Tomb at the Daejeon Doan-daero Construction Site." Journal of Conservation Science 40, no. 4 (2024): 685–97. https://doi.org/10.12654/jcs.2024.40.4.26.

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This study presents a scientific analysis of 27 items of clothing excavated recovered from a heritage site within the Daejeon Doan-daero road construction zone. Using optical inspection and nondestructive spectroscopic analysis methods, we examined the textiles for their, states of damage, contaminants, and material compositions, and we employed radiocarbon dating to estimate their age. Visual inspection revealed significant damage to the artifacts, with hardened deposits causing discoloration that changed their original color to a brownish hue. We analyzed the fiber materials using scanning e

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S. K., Shakshooki, Jongor A. A., and Elakari F. A. et. al. "Synthesis and Characterization of Novel Zirconium Oxide-Crystalline Cerium(IV)Hydrogen Phosphate/ Polybenzimidazole, Polyaniline, Polyindole, Polycarbazole, Nanocomposites." Academic Journal of Chemistry, no. 91 (January 25, 2024): 11–20. http://dx.doi.org/10.32861/ajc.91.11.20.

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Crystalline cerium (iv) hydrogen phosphate Ce(HPO4)2.1.33H2O(CeP), and nano particles zirconium oxide(nZrO2), of average size19.3nm, were prepared and characterized by chemical , XRD, FT-IR and TGA analysis. Mixing slurry aqueous solution of nZrO2 and CeP in 25:75 wt/wt% mixing ratios, respectively, lead to formation of novel zirconium oxide-crystalline cerium phosphate nanocomposite, [ZrO2]0.25[Ce(HPO4)2]0.75.1.33H2O(nZrO2-CeP). Novel[nZrO2]0.25[CeP]0.75/ polybenzimidazole-, polyaniline-, polyindole-, and polycarbazole nanocomposites were prepared via in-situ chemical oxidation of their paren

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Kataoka, Sho, Enkyu Lee, M. Isabel Tejedor-Tejedor, and Marc A. Anderson. "Photocatalytic degradation of hydrogen sulfide and in situ FT-IR analysis of reaction products on surface of TiO2." Applied Catalysis B: Environmental 61, no. 1-2 (2005): 159–63. http://dx.doi.org/10.1016/j.apcatb.2005.04.018.

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Li, Can, Hui Zhang, Kaili Wang, Yanfen Miao, and Qin Xin. "FT-IR Emission Spectroscopic Studies of the Thermal Decomposition of Ammonium Molybdate, Vanadate, and Tungstate." Applied Spectroscopy 47, no. 1 (1993): 56–61. http://dx.doi.org/10.1366/0003702934048604.

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The thermal decomposition of ammonium molybdate, vanadate, and tungstate has been studied by in situ Fourier transform infrared (FT-IR) emission spectroscopy and differential thermal analysis (DTA) in the temperature range of 100–500°C. The results indicated that ammonium vanadate directly converted into V2O5 with the simple loss of its ammonium ion at around 230°C; however, the ammonium ion of molybdate and tungstate decomposed in two steps at 230 and 330°C, respectively. The emission spectra are presented with a relative emittance value which was directly calculated from the single-beam emis

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Mızrak, Büşra, Efe Baturhan Orman, Şaziye Abdurrahmanoğlu, and Ali Rıza Özkaya. "Synthesis, characterization and electrochemical properties of novel pyridine phthalocyanine derivatives." Journal of Porphyrins and Phthalocyanines 22, no. 01n03 (2018): 243–49. http://dx.doi.org/10.1142/s1088424618500207.

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In this study, the novel Zn(II), metal-free and sandwich-type Lu(Pc)2 phthalocyanines containing tetra pyridine substituted at peripheral position were synthesized. All the new compounds have been characterized by FT-IR and UV-vis spectroscopy, [Formula: see text]H-NMR, MALDI-MS and elemental analysis. The electrochemical and spectroelectrochemical properties of all novel metallo- and metal free phthalocyanine compounds were also investigated by voltammetric and in situ spectroelectrochemical measurements on Pt in dimethylsulfoxide/tetrabutylammonium perchlorate.

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Feyzi, Akram, Khalil Faghihi, and Abdol Ali Zolanvari. "Synthesis and Characterization of New Polyimide/Organoclay Nanocomposites Derived From 3,3′,4,4′-Biphenyltetracarboxylic Dianhydride and 1,2-Bis(4-Aminophenoxy)Ethane." High Temperature Materials and Processes 32, no. 2 (2013): 171–78. http://dx.doi.org/10.1515/htmp-2012-0109.

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AbstractA series of nanocomposites consist of organic polyimide and organo-modified clay content varying from 0 to 10 mass%, were successfully prepared by in situ polymerization. Polyimide used as a matrix of nanocomposite was prepared through the reaction of 1,2-bis(4-aminophenoxy)ethane (BAE) and 3,3′,4,4′-biphenyltetracarboxylic dianhydride (BPDA) in N,N-dimethylacetamide (DMAC). The resulting nanocomposite films were characterized by FT-IR spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermogravimetric analysis (TGA).

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Mispa, K. Jacinth, P. Subramaniam, and R. Murugesan. "Studies on Polyaniline/Silver Molybdate Nanocomposites." International Journal of Nanoscience 13, no. 01 (2014): 1450002. http://dx.doi.org/10.1142/s0219581x14500021.

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Silver molybdate nanoparticles were successfully prepared by the hydrothermal process. Polyaniline–silver molybdate nanocomposites were prepared by in situ chemical oxidative polymerization technique. Silver molybdate nanoparticles and the polymer samples were characterized by conductivity studies, Fourier transform infrared spectra (FT-IR), UV-visible spectra, photoluminescence spectra, X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermogravimetric analysis (TGA). The electrical conductivity of PANI- Cl - increases when doped with silver molybdate nanoparticles and follows

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Avcı Özbek, Hülya. "Anderson Type Polyoxometalates Containing Vitamin B1." Celal Bayar Üniversitesi Fen Bilimleri Dergisi 21, no. 2 (2025): 95–99. https://doi.org/10.18466/cbayarfbe.1570842.

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The novel vitamin B1-substituted polyoxomolybdates (C12H17N4OS)3[Co(III)Mo6O24H6]·7H2O (1) and (C12H17N4OS)4[Ni(II)Mo6O24H6]·7H2O (2) have been synthesized using (NH4)3[Co(III)Mo6O24H6]·7H2O and (NH4)4[Ni(II)Mo6O24H6]·7H2O respectively as a precursor for the in situ formation of the counter ion vitamin B1 (C12H17N4OS)+. These compounds have been thoroughly characterized in the solid state FT-IR spectroscopy, powder X-ray diffraction (PXRD), TGA and elemental analysis.

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Sağlam, Buket, Onur Akkuş, Azime Akçaöz-Alasar, Çağatay Ceylan, Günnur Güler, and Bünyamin Akgül. "An Investigation of RNA Methylations with Biophysical Approaches in a Cervical Cancer Cell Model." Cells 13, no. 22 (2024): 1832. http://dx.doi.org/10.3390/cells13221832.

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RNA methylation adds a second layer of genetic information that dictates the post-transcriptional fate of RNAs. Although various methods exist that enable the analysis of RNA methylation in a site-specific or transcriptome-wide manner, whether biophysical approaches can be employed to such analyses is unexplored. In this study, Fourier-transform infrared (FT-IR) and circular dichroism (CD) spectroscopy are employed to examine the methylation status of both synthetic and cellular RNAs. The results show that FT-IR spectroscopy is perfectly capable of quantitatively distinguishing synthetic m6A-m

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Çalık, Ali Emre, Baybars Köksoy, Efe Baturhan Orman, Mahmut Durmuş, Ali Rıza Özkaya, and Mustafa Bulut. "4-Carboxymethyl-8-methyl-7-oxycoumarin substituted zinc, cobalt and indium phthalocyanines: electrochemical and photochemical properties." Journal of Porphyrins and Phthalocyanines 17, no. 10 (2013): 1046–54. http://dx.doi.org/10.1142/s108842461350096x.

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In this study, the novel tetra-substituted Zn ( II )(3), Co ( II )(4) and In ( III )acetate (5) phthalocyanines were synthesized by cyclotetramerization reactions of 7-(2,3-dicyanophenoxy)-8-methylcoumarin-4-acetic acid (2) with corresponding metal salts. All the new compounds have been characterized by MALDI-TOF mass, FT-IR and UV-vis spectra, and elemental analysis as well. The electrochemical, in situ spectroelectrochemical and photochemical properties of tetra-substituted Zn ( II ), Co ( II ) and In ( III )acetate phthalocyanines were also investigated.

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Frola, F., F. Prinetto, G. Ghiotti, et al. "Combined in situ FT-IR and TRM analysis of the NOx storage properties of Pt-Ba/Al2O3 LNT catalysts." Catalysis Today 126, no. 1-2 (2007): 81–89. http://dx.doi.org/10.1016/j.cattod.2006.10.010.

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Yoon, Yo Sung, and Jay H. Lee. "In-situ FT-IR quantitative analysis of amine concentrations and CO2 loading amount in solvent mixtures for CO2 capture." International Journal of Greenhouse Gas Control 94 (March 2020): 102920. http://dx.doi.org/10.1016/j.ijggc.2019.102920.

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Oscar, Felipe Arbeláez Pérez, Domínguez Cardozo Sara, Felipe Orrego Romero Andrés, Luz Villa Holguín Aída, and Bustamante Felipe. "Gas phase synthesis of dimethyl carbonate from CO2 and CH3OH over Cu-Ni/AC. A kinetic study." Revista Facultad de Ingeniería, Universidad de Antioquia, no. 95 (September 23, 2019): 88–99. https://doi.org/10.17533/udea.redin.20190941.

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The catalytic activity for dimethyl carbonate formation from carbon dioxide and methanol over mono and bimetallic Cu:Ni supported on activated carbon is presented. Bimetallic catalysts exhibit higher catalytic activity than the monometallic samples, being Cu:Ni-2:1 (molar ratio) the best catalyst; X-Ray diffraction, transmission electron microscopy, and metal dispersion analysis provided insight into the improved activity. In situ FT-IR experiments were conducted to investigate the mechanism of formation of dimethyl carbonate from methanol and carbon dioxide over Cu-Ni:2-1. The kinetics of the

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Jiang, Xian Kai, Ji You Gu, and Yan Hua Zhang. "The Improvement of Mechanical Properties of Polyurethane Coating by Multi-Walled Carbon Nanotubes." Advanced Materials Research 236-238 (May 2011): 2063–66. http://dx.doi.org/10.4028/www.scientific.net/amr.236-238.2063.

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Mechanical properties of polyurethane coating were improved by multi-walled carbon nanotubes (MWNTs) via in situ polymerization and blending polymerization. Fourier transform infrared spectroscopy (FT-IR) measurement was employed to assess the influence of acid treatment on MWNTs. Mechanical properties analysis of polyurethane coatings including tensile strength, elastic modulus, hardness, flexibility, impact resistance were employed to assess the improvement of mechanical properties of polyurethane coating by MWNTs. The results indicated that MWNTs could improve the mechanical properties of p

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Turkten, Nazli, Yunus Karatas, and Miray Bekbolet. "Preparation of PANI Modified ZnO Composites via Different Methods: Structural, Morphological and Photocatalytic Properties." Water 13, no. 8 (2021): 1025. http://dx.doi.org/10.3390/w13081025.

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Polyaniline modified zinc oxide (PANI-ZnO) photocatalyst composites were synthesized by focusing on dissolution disadvantage of ZnO. In-Situ chemical oxidation polymerization method was performed under neutral conditions (PANI-ES) whereas in hybridization method physical blending was applied using emeraldine base of polyaniline (PANI-EB). PANI-ZnO composites were prepared in various ratios of aniline (ANI) to ZnO as 1%, 3%, 6% and 9%. The alterations on the structural and morphological properties of PANI-ZnO composites were compared by Fourier Transform Infrared (FT-IR), Raman Spectroscopy, X-

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Qi, Pengjia, Ziwei Xu, and Tong Zhang. "In Situ Growth of Dopamine on QCM for Humidity Detection." Chemosensors 10, no. 12 (2022): 522. http://dx.doi.org/10.3390/chemosensors10120522.

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Polydopamine (PDA) films were successfully prepared on quartz crystal microbalance (QCM) by in-situ growth method, and the obtained QCM sensor was used for humidity detection. Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM) were used to study the chemical composition and microstructure of the in-situ grown PDA sensitive films. The experimental results showed that the PDA-QCM humidity sensor with 2 h polymerization growth times (2-PDA-QCM) owned high sensitivity (20.77 Hz/% RH), good selectivity, short response/recovery time (5 s/11 s) and acceptable long-

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Gong, Nina, Chaowen Wang, and Shuai Xu. "Color Origin of Greyish-Purple Tremolite Jade from Sanchahe in Qinghai Province, NW China." Minerals 13, no. 8 (2023): 1049. http://dx.doi.org/10.3390/min13081049.

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Greyish-purple tremolite jade has become well known in the past few years, and the origin of its color has attracted the attention of gemologists. In this study, FT-IR spectra, EPMA, EPR spectra, micro-XRF, UV–Vis–NIR spectra, and LA-ICP-MS in situ mapping were analyzed to investigate the chromophore elements. The study sample was chosen from the Sanchahe mine, Qinghai Province, NW China, which has the typical characteristics of a gradual color change. The FT-IR and EPMA results revealed that the mineral composition of the dark and light greyish-purple regions of the sample are primarily compo

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Dillner, A. M., and S. Takahama. "Predicting ambient aerosol Thermal Optical Reflectance (TOR) measurements from infrared spectra: organic carbon." Atmospheric Measurement Techniques Discussions 7, no. 11 (2014): 10931–64. http://dx.doi.org/10.5194/amtd-7-10931-2014.

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Abstract. Organic carbon (OC) can constitute 50% or more of the mass of atmospheric particulate matter. Typically, the organic carbon concentration is measured using thermal methods such as Thermal-Optical Reflectance (TOR) from quartz fiber filters. Here, methods are presented whereby Fourier Transform Infrared (FT-IR) absorbance spectra from polytetrafluoroethylene (PTFE or Teflon) filters are used to accurately predict TOR OC. Transmittance FT-IR analysis is rapid, inexpensive, and non-destructive to the PTFE filters. To develop and test the method, FT-IR absorbance spectra are obtained fro

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Wahyudianto, Benny, and Langit Cahya Adi. "Magnetic Properties Analysis of Synthesis of Poly-(Vinyl Alcohol) / Clay / Nanomagnetite Composites: Application for Wastewater Filter." International Journal of Hydrological and Environmental for Sustainability 1, no. 3 (2022): 132–45. http://dx.doi.org/10.58524/ijhes.v1i3.145.

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The composites of poly–(vinyl alcohol) (PVA)/clay/Fe3O4 (magnetite) were synthesized with Fe(II) in-situ via hydrolysis method. The films were obtained as films by employing natural clay containing montmorrilonite (aluminosilicate) using casting technique. The weight variations of each component were also investigated. The resulting films were characterized with fourier transform infrared (FT-IR) to analyze their functional groups, and then X-ray diffractometer (XRD) was used to check the formation of magnetite and it was combined with Deybe-Scherrer equation to determine the theoretical size

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