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G R Nash - One of the best experts on this subject based on the ideXlab platform.

  • correction surface nanobubbles on the Carbonate Mineral dolomite
    RSC Advances, 2019
    Co-Authors: Camilla L Owens, Edgar Schach, Martin Rudolph, G R Nash
    Abstract:

    Correction for ‘Surface nanobubbles on the Carbonate Mineral dolomite’ by Camilla L. Owens et al., RSC Adv., 2018, 8, 35448–35452.

  • surface nanobubbles on the Carbonate Mineral dolomite
    RSC Advances, 2018
    Co-Authors: Camilla L Owens, Edgar Schach, Martin Rudolph, G R Nash
    Abstract:

    Surface nanobubbles are of wide interest to a number of research fields, ranging from Mineral processing to metamaterials. Their formation on hydrophobic surfaces has long been confirmed but the factors controlling their size and location are less well understood. In this work we investigate, using non-contact atomic force microscopy, the properties of surface nanobubbles on the Mineral dolomite under three aqueous solutions; water, depressant and collector. Nanobubbles were observed under all three conditions, but with the highest density observed under collector conditions. Analysis of the critical angle of the bubbles suggests that the collector does not affect the surface tension of the bubbles, but instead does affect their pinning, consistent with the observed increased density.

Camilla L Owens - One of the best experts on this subject based on the ideXlab platform.

  • correction surface nanobubbles on the Carbonate Mineral dolomite
    RSC Advances, 2019
    Co-Authors: Camilla L Owens, Edgar Schach, Martin Rudolph, G R Nash
    Abstract:

    Correction for ‘Surface nanobubbles on the Carbonate Mineral dolomite’ by Camilla L. Owens et al., RSC Adv., 2018, 8, 35448–35452.

  • surface nanobubbles on the Carbonate Mineral dolomite
    RSC Advances, 2018
    Co-Authors: Camilla L Owens, Edgar Schach, Martin Rudolph, G R Nash
    Abstract:

    Surface nanobubbles are of wide interest to a number of research fields, ranging from Mineral processing to metamaterials. Their formation on hydrophobic surfaces has long been confirmed but the factors controlling their size and location are less well understood. In this work we investigate, using non-contact atomic force microscopy, the properties of surface nanobubbles on the Mineral dolomite under three aqueous solutions; water, depressant and collector. Nanobubbles were observed under all three conditions, but with the highest density observed under collector conditions. Analysis of the critical angle of the bubbles suggests that the collector does not affect the surface tension of the bubbles, but instead does affect their pinning, consistent with the observed increased density.

Ray L. Frost - One of the best experts on this subject based on the ideXlab platform.

  • a raman spectroscopic study of the basic Carbonate Mineral callaghanite cu2mg2 co3 oh 6 2h2o
    Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2013
    Co-Authors: Jiři Cejka, Jiři Sejkora, Ivana Jebava, Sara J Couperthwaite, Ray L. Frost
    Abstract:

    Raman spectrum of callaghanite, Cu2Mg2(CO3)(OH)6⋅2H2O, was studied and compared with published Raman spectra of azurite, malachite and hydromagnesite. Stretching and bending vibrations of Carbonate and hydroxyl units and water molecules were tentatively assigned. Approximate O–H…O hydrogen bond lengths were inferred from the spectra. Because of the high content of hydroxyl ions in the crystal structure in comparison with low content of Carbonate units, callaghanite should be better classified as a carbonatohydroxide than a hydroxyCarbonate.

  • infrared and infrared emission spectroscopy of the zinc Carbonate Mineral smithsonite
    Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2008
    Co-Authors: Ray L. Frost, Wayde N Martens, Daria L Wain, Matthew C Hales
    Abstract:

    Infrared emission and infrared spectroscopy has been used to study a series of selected natural smithsonites from different origins. An intense broad infrared band at 1440 cm-1 is assigned to the ν3 CO32- antisymmetric stretching vibration. An additional band is resolved at 1335 cm-1. An intense sharp Raman band at 1092 cm-1 is assigned to the CO32- symmetric stretching vibration. Infrared emission spectra show a broad antisymmetric band at 1442 cm-1 shifting to lower wavenumbers with thermal treatment. A band observed at 870 cm-1 with a band of lesser intensity at 842 cm-1 shifts to higher wavenumbers upon thermal treatment and is observed at 865 cm-1 at 400 degrees Celsius and is assigned to the CO32- ν2 mode. No ν2 bending modes are observed in the Raman spectra for smithsonite. The band at 746 cm-1 shifts to 743 cm-1 at 400 degrees Celsius and is attributed to the CO32- ν4 in phase bending modes. Two infrared bands at 744 and around 729 cm-1are assigned to the ν4 in phase bending mode. Multiple bands may be attributed to the structural distortion ZnO6 octahedron. This structural distortion is brought about by the substitution of Zn by some other cation. A number of bands at 2499, 2597, 2858, 2954 and 2991 cm-1 in both the IE and infrared spectra are attributed to combination bands.

  • raman spectroscopic study of the uranyl Carbonate Mineral zellerite
    Journal of Raman Spectroscopy, 2008
    Co-Authors: Ray L. Frost, Marilla J. Dickfos, Jiři Cejka
    Abstract:

    Raman spectroscopy complimented with infrared spectroscopy has been used to study the uranyl Carbonate Mineral voglite. The Mineral has the formula Ca2Cu 2+ [(UO2)(CO3)3](CO3).6H2O and bands attributed to these vibrating units are readily identified in the Raman spectrum. Symmetric stretching modes at 836 and 1094 cm -1 are assigned to ν1 (UO2) 2+ , and ν1 (CO3) 2- units. The ν3 antisymmetric stretching modes of (UO2) 2+ are not observed in the Raman spectrum but may be readily observed in the infrared spectrum at 898 cm -1 . The ν3 antisymmetric stretching mode of (CO3) 2- is observed in the Raman spectrum at 1369 cm -1 as a low intensity band as is also the ν3 (CO3) 2- infrared modes at 1362, 1425, 1509 and 1566 cm -1 . No ν2 (CO3) 2- Raman bending modes are observed for voglite. The Raman band at 749 cm -1 and the two infrared bands at 747 and 709 cm -1 are assigned to the ν4 (CO3) 2- bending modes. U-O bond and O-H…O bond lengths in the structure of voglite were inferred from the infrared and Raman spectra.

  • Raman spectroscopic study of the uranyl Carbonate Mineral voglite: Raman studies of the uranyl Carbonate Mineral voglite
    Journal of Raman Spectroscopy, 2007
    Co-Authors: Ray L. Frost, Jiří Čejka, Godwin A. Ayoko, Marilla J. Dickfos
    Abstract:

    Raman spectroscopy complimented with infrared spectroscopy has been used to study the uranyl Carbonate Mineral voglite. The Mineral has the formula Ca2Cu2+\[(UO2)(CO3)3](CO3).6H2O and bands attributed to these vibrating units are readily identified in the Raman spectrum. Symmetric stretching modes at 836 and 1094 cm-1 are assigned to v1 (UO2)2+, and v1 (CO3)2- units. The v3 antisymmetric stretching modes of (UO2)2+ are not observed in the Raman spectrum but may be readily observed in the infrared spectrum at 898 cm-1. The v3 antisymmetric stretching mode of (CO3)2- is observed in the Raman spectrum at 1369 cm-1 as a low intensity band as is also the ν3 (CO3)2- infrared modes at 1362, 1425, 1509 and 1566 cm-1. No ν2 (CO3)2- Raman bending modes are observed for voglite. The Raman band at 749 cm-1 and the two infrared bands at 747 and 709 cm-1 are assigned to the ν4 (CO3)2- bending modes. U-O bond and O-H…O bond lengths in the structure of voglite were inferred from the infrared and Raman spectra

Martin Rudolph - One of the best experts on this subject based on the ideXlab platform.

  • correction surface nanobubbles on the Carbonate Mineral dolomite
    RSC Advances, 2019
    Co-Authors: Camilla L Owens, Edgar Schach, Martin Rudolph, G R Nash
    Abstract:

    Correction for ‘Surface nanobubbles on the Carbonate Mineral dolomite’ by Camilla L. Owens et al., RSC Adv., 2018, 8, 35448–35452.

  • surface nanobubbles on the Carbonate Mineral dolomite
    RSC Advances, 2018
    Co-Authors: Camilla L Owens, Edgar Schach, Martin Rudolph, G R Nash
    Abstract:

    Surface nanobubbles are of wide interest to a number of research fields, ranging from Mineral processing to metamaterials. Their formation on hydrophobic surfaces has long been confirmed but the factors controlling their size and location are less well understood. In this work we investigate, using non-contact atomic force microscopy, the properties of surface nanobubbles on the Mineral dolomite under three aqueous solutions; water, depressant and collector. Nanobubbles were observed under all three conditions, but with the highest density observed under collector conditions. Analysis of the critical angle of the bubbles suggests that the collector does not affect the surface tension of the bubbles, but instead does affect their pinning, consistent with the observed increased density.

Edgar Schach - One of the best experts on this subject based on the ideXlab platform.

  • correction surface nanobubbles on the Carbonate Mineral dolomite
    RSC Advances, 2019
    Co-Authors: Camilla L Owens, Edgar Schach, Martin Rudolph, G R Nash
    Abstract:

    Correction for ‘Surface nanobubbles on the Carbonate Mineral dolomite’ by Camilla L. Owens et al., RSC Adv., 2018, 8, 35448–35452.

  • surface nanobubbles on the Carbonate Mineral dolomite
    RSC Advances, 2018
    Co-Authors: Camilla L Owens, Edgar Schach, Martin Rudolph, G R Nash
    Abstract:

    Surface nanobubbles are of wide interest to a number of research fields, ranging from Mineral processing to metamaterials. Their formation on hydrophobic surfaces has long been confirmed but the factors controlling their size and location are less well understood. In this work we investigate, using non-contact atomic force microscopy, the properties of surface nanobubbles on the Mineral dolomite under three aqueous solutions; water, depressant and collector. Nanobubbles were observed under all three conditions, but with the highest density observed under collector conditions. Analysis of the critical angle of the bubbles suggests that the collector does not affect the surface tension of the bubbles, but instead does affect their pinning, consistent with the observed increased density.