Characterization of Carbon Nanoparticles in Thin-Film Nanocomposites by Confocal Raman Microscopy

Enríquez, E.; Rubia, M.A. de la; Campo, Adolfo del; Rubio-Marcos, Fernando; Fernández, J.F.

doi:10.1021/jp502403r

Cited by 18 publications

(14 citation statements)

References 40 publications

(76 reference statements)

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“…The ratio ID/IG≈1 indicates an amorphous state of the carbon. In all cements analyzed the ratio ID/IG is < 1, indicating a slight increase of the graphitic phase [8]. It is important to note that in all the average Raman spectra the carbon coexists simultaneously with the carbonates.…”

Section:  Confocal Raman Microscopy Resultsmentioning

confidence: 88%

“…1365 cm , which corresponds to a disordered state of carbon; and the G peak, ca. 1615cm −1 , which corresponds to the graphitic carbon (ordered state) [8,14] (Fig. 5).…”

Section:  Confocal Raman Microscopy Resultsmentioning

confidence: 99%

“…Raman spectroscopy when is combined with Confocal microscopy is a non-destructive technique that allows identifying the phase composition in inorganic [7] and carbon based materials [8] with high spatial resolution. Supporting us in Raman investigations of anhydrous and hydrated cementitious pastes, the use of CRM can give us excellent information about the properties of this material.…”

Section: Introductionmentioning

confidence: 99%

“…In this study was possible to reveal the chemical heterogeneity of distinct clinker phases with different crystal orientations. Recent studies have evaluated the use of Confocal Raman Microscopy (CRM) as a non-destructive technique in the determination of the hydration process of the C3S phase present in the clinker [6].Raman spectroscopy when is combined with Confocal microscopy is a non-destructive technique that allows identifying the phase composition in inorganic [7] and carbon based materials [8] with high spatial resolution. Supporting us in Raman investigations of anhydrous and hydrated cementitious pastes, the use of CRM can give us excellent information about the properties of this material.…”

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confidence: 99%

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Confocal Raman Microscopy: new perspective on the weathering of anhydrous cement

Torres-Carrasco

Campo

Rubia

et al. 2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. Raman spectroscopy when is combined with Confocal microscopy is a nondestructive technique that allow us to obtain information in cementitious materials. In this study, we present non-destructive image and structural analysis of anhydrous cement with carbonation evidences by Confocal Raman Microscopy (CRM). The results obtained by CRM show a direct relationship between the presence of the weathering processes of an anhydrous cement with the presence of sulphates and surprisingly, with the existence of amorphous carbon in the medium. IntroductionRaman spectroscopy is a vibrational spectroscopic technique complementary to the more widely used infrared spectroscopy. The use of Raman spectroscopy in the characterization of the various cements and supplementary cementitious materials (SCMs) has been investigated over the last four decades [1][2][3][4]. However, in 2013, Schmid et al. [5] published the first successful and to date only Raman imaging study on cementitious materials. In this study was possible to reveal the chemical heterogeneity of distinct clinker phases with different crystal orientations. Recent studies have evaluated the use of Confocal Raman Microscopy (CRM) as a non-destructive technique in the determination of the hydration process of the C3S phase present in the clinker [6].Raman spectroscopy when is combined with Confocal microscopy is a non-destructive technique that allows identifying the phase composition in inorganic [7] and carbon based materials [8] with high spatial resolution. Supporting us in Raman investigations of anhydrous and hydrated cementitious pastes, the use of CRM can give us excellent information about the properties of this material.The aim of the present work is to study cement weathering features by CRM. Conventional techniques, such as FTIR and DTA/TG, are also applied on different cement samples in order to determine the degree of weathering. In addition of the good agreement between conventional techniques and CRM, a correlation between presences of amorphous carbon species is established with the extent of cement weathering. The present findings confirm CRM as a fast and reliable technique for the determination of weathering in cement and a key tool to understand the weathering mechanism.

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Section:  Confocal Raman Microscopy Resultsmentioning

confidence: 88%

“…1365 cm , which corresponds to a disordered state of carbon; and the G peak, ca. 1615cm −1 , which corresponds to the graphitic carbon (ordered state) [8,14] (Fig. 5).…”

Section:  Confocal Raman Microscopy Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Confocal Raman Microscopy: new perspective on the weathering of anhydrous cement

Torres-Carrasco

Campo

Rubia

et al. 2017

IOP Conf. Ser.: Mater. Sci. Eng.

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“…Thus, the microstructure plays a key role in the reaction kinetic. These limitations could be overcome by using confocal Raman microscopy (CRM) technique, which combines high spectral and spatial resolution …”

Section: Introductionmentioning

confidence: 99%

In situ full view of the Portland cement hydration by confocal Raman microscopy

Torres-Carrasco

Campo

Rubia

et al. 2019

J Raman Spectroscopy

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The study of the hydration reactions of Portland cement is well documented by conventional techniques such as X‐ray diffraction, differential thermal and thermogravimetric analysis, or NMR, for instance. However, a complete view of all the phases present in the reactions is elusive. In this study, by using an in situ analysis through confocal Raman microscopy (CRM), the reaction of the initial phases (C2S, C3S, and C3A) to form new crystalline phases (portlandite, ettringite, and monosulfate) and amorphous C‐S‐H gel is reported. For the first time, this characterization technique allows to know the distribution and evolution of hydration water. In situ characterization of cement‐based materials opens a new gate to understand the different mechanisms involved in the processes of hydration of a Portland cement, due to the combined chemical and high spatial resolution of CRM.

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Advanced carbon-silica hybrid fillers for enhanced rubber compounds in tires

Dwivedi,

Mohanty,

Manjare

et al. 2024

emergent mater.

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Characterization of Carbon Nanoparticles in Thin-Film Nanocomposites by Confocal Raman Microscopy

Abstract: The tile surfaces are measured by the Confocal Raman microscope in order to analyze their contribution in the Raman signal. The glazed and zircon particles are active in Raman scattering as shown in figure S1a. The AFM micrograph of the glazed surface is also shown in figure S1b.

Cited by 18 publications

References 40 publications

Confocal Raman Microscopy: new perspective on the weathering of anhydrous cement

Confocal Raman Microscopy: new perspective on the weathering of anhydrous cement

In situ full view of the Portland cement hydration by confocal Raman microscopy

Advanced carbon-silica hybrid fillers for enhanced rubber compounds in tires

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