The Investigation of Microstructure, Photocatalysis and Corrosion Resistance of C-Doped Ti–O Films Fabricated by Reactive Magnetron Sputtering Deposition with CO2 Gas

Abstract

By employing carbon dioxide as one source of reaction gases, carbon-doped Ti–O films were fabricated via reactive magnetron sputtering deposition. The chemical bonding configurations and microstructure of the films were analyzed by Raman spectrum and SEM, respectively. The effect of pH on the photocatalytic activities of the films was determined via evaluation of the decolorization rate of methyl orange under alkali, acid and neutrality conditions using UV light irradiation. Electrochemical impedance spectroscopy and potentiodynamic polarization tests were employed to determine the anti-corrosion properties. Compared with the C-free Ti–O film, the C-doped Ti–O films exhibit superior corrosion resistance. Furthermore, the results of the photodegradation experiment suggest that the C-doped Ti–O films have excellent photocatalytic activities and, for methyl orange, those with higher carbon content exhibit hyper-photodegradative effect under the alkali condition.

The Study of Surface Structure and the Tribological Property of DLC-Modified NBR Elastomers Using DC-MS

“…In the range of 300-500 eV, there are some small peaks, and they are Ca 2p and N 1s, which are located around 347 eV and 399 eV, respectively. In addition, the peaks in the range of 960-1030 eV are the KLL Auger shift peaks of carbon [38]. The counts of C 1s peaks are 175,369, 169,311, 238,883, 267,171 and 107,182, corresponding to sample-0, sample-50, sample-100, sample-150 and the NBR elastomer substrate, respectively, which also proves that they have a carbon film on the surface.…”

“…In the range of 300-500 eV, there are some small peaks, and they are Ca 2p and N 1s, which are located around 347 eV and 399 eV, respectively. In addition, the peaks in the range of 960-1030 eV are the KLL Auger shift peaks of carbon [38] Figure 7 provides the full XPS spectra of NBR substrates and the DLC films deposited under different bias voltages. From Figure 7, we can observe that there is an obvious C 1s peak near 284.6 eV and an O 1s peak near 531.9 eV for all samples [37].…”