Journal: Physical Review Materials

Article Title: Phase stabilities of MgCO3 and MgCO3 -II studied by Raman spectroscopy, x-ray diffraction, and density functional theory calculations

doi: 10.1103/physrevmaterials.4.055001

Figure Lengend Snippet: FIG. 7. Raman spectra of MgCO3 (magnesite) + MgCO3-II (C2/m) obtained during decompression down to ambient conditions. Frequencies of the (C3O9)6−ring bending (light grey) are observed down to ∼40 GPa. The concomitant presence of a characteristic mode (CO2− 3 –stretching mode) of MgCO3 (magnesite) indicated in dark grey shows the coexistence of magnesite and metastable MgCO3-II. MgCO3 (magnesite) is recovered at low pressures and ambient conditions.

Article Snippet: The sample was heated from both sides with a pulsed CO2 laser (Diamond K-250 from Coherent, λ = 10.6 μm) [28].

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Journal: Nanomaterials

Article Title: Hollow Bioelectrodes Based on Buckypaper Assembly. Application to the Electroenzymatic Reduction of O 2

doi: 10.3390/nano12142399

Figure Lengend Snippet: ( A ) Face view photography of the hollow MWCNT-based buckypaper electrode and laser intensity image of vertical cross section of a hollow electrode. ( B ) Cyclic voltammograms recorded in phosphate buffer (pH 6.5; 1 mV s −1 ) at hollow electrodes based on L bp (black) or hemin-L bp (blue) glued with C bp and containing BOx (2.0 mg) trapped inside the electrode cavity. Buffer under argon (dashes) or O 2 (solid lines). ( C ) Evolution of the faradic catalytic current at 0.5V for the reduction of O 2 as a function of time recorded periodically on hollow electrodes based on L bp (black) or hemin-L bp (blue) and containing 2 mg of BOx. Both bioelectrodes are stored in 0.1 M phosphate buffer (pH 6.5).

Article Snippet: A MWCNT commercial buckypaper (C bp ; 60 gsm, reference number NTL-12218) from Nano-TechLab (Yadkinville, NC, USA) was first cut into individual conductive sheet (Ø = 30 mm) to be used as a support.

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