FTIR study of the adsorption of water on ultradispersed diamond powder surface

Ji, Shengfu; Jiang, Tianyue; Xu, Ke; Li, Shuben

doi:10.1016/s0169-4332(98)00209-8

Cited by 147 publications

(62 citation statements)

References 10 publications

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“…Thus we suppose that equilibrium with respect to ambient humidity was reached. The common features in the spectra are related to O-H stretching (2500-3500 cm −1 ) and bending (1625 cm −1 ) vibrations from the adsorbed water [8,22].…”

Section: Resultsmentioning

confidence: 99%

Water interaction with hydrogenated and oxidized detonation nanodiamonds — Microscopic and spectroscopic analyses

Stehlík

Glatzel

Pichot

et al. 2016

Diamond and Related Materials

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a b s t r a c tWater interaction with surface modified nanodiamonds (NDs) is critical for many possible applications of NDs e.g. in biomedicine. Here we report on investigation of water interaction with hydrogenated and oxidized detonation nanodiamonds (H-DNDs, O-DNDs) by means of Fourier transform infrared spectroscopy (FTIR), thermal analysis, and Kelvin probe force microscopy (KPFM). Higher water content (4.4%) as well as weaker interaction of water with H-DNDs are identified by thermal analysis. It is explained by hydrophobicity of the H-DND surface, as revealed by the analysis of bending and stretching vibrations of surface water in FTIR spectra. On the other hand, hydrophilic nature of O-DNDs leads to lower water content (3.1%) but stronger interaction with the O-DND surface. This is evidenced by as high as 300°C desorption temperature of the surface water from O-DNDs. KPFM analysis shows that the surface-bound water can have significant screening effect on contact potential difference (CPD) of nanodiamonds (up to 510 mV) as well as on the CPD difference between H-DNDs and O-DNDs (from 50 mV to 210 mV). Nevertheless, H-DNDs exhibit always lower work function.

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Section: Resultsmentioning

confidence: 99%

Water interaction with hydrogenated and oxidized detonation nanodiamonds — Microscopic and spectroscopic analyses

Stehlík

Glatzel

Pichot

et al. 2016

Diamond and Related Materials

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“…The IR spectra were measured after dilution with KBr by using FTIR (JASCO Co., FT/IR-610). The spectrometer was equipped with a vacuum heating diffusive-reflection accessory (JASCO Co., DR-600A) after heating the samples at 150°C in vacuum for 15 h in order to remove the considerable amount of water adsorbed [37].…”

Section: Methodsmentioning

confidence: 99%

Preparation and Behavior of Brownish, Clear Nanodiamond Colloids

Ozawa

Inaguma

Takahashi³

et al. 2007

Advanced Materials

318

256

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A new facile method that employs high‐power sonication is used to break up firmly agglutinated nanodiamonds and obtain dispersion just as effectively as stirred‐media milling. The dispersion properties of the de‐agglutinated nanodiamonds in various nonaqueous solvents, and the pH‐dependent dispersion/precipitation behavior of the hydrosols are presented (see figure). The brownish color of the colloids is attributed mostly to the Rayleigh scattering superimposed over the finite absorption in the visible wavelength.

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“…8 shows the FT-IR spectra of the NDs and carbonbased nanoparticles. In the spectra of the ND and carbonbased nanoparticles heated at 1000°C, the broad peak at around 3427 cm À1 is assigned to the hydroxyl group and the small peak at 2931 cm À1 is assigned to the alkyl group [19,20]. Hydroxyl groups are easily adsorbed on NDs in air due to the many dangling bonds on the diamond structured surface.…”

Section: Resultsmentioning

confidence: 99%

“…Hydroxyl groups are easily adsorbed on NDs in air due to the many dangling bonds on the diamond structured surface. The signals at 1738, 1630 and 1125 cm À1 indicate the presence of carboxyl and hydroxyl groups [19,20]. When the heating temperature exceeds 1300°C, the functionality on the surfaces of the carbon-based nanoparticles is reduced and small peaks appear at around 2100-2400 cm À1 indicating the presence of nitrile (C"N) and alkynyl (C"C) moieties.…”

Section: Resultsmentioning

confidence: 99%