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.
Highlights
Environmental pollution is becoming a serious issue worldwide, which is leading to increasing interest in the study of environmental purification materials [1,2].Titanium dioxide (TiO2 ), as one type of semiconductor material, exhibits significant advantages in tackling toxic, refractory organic dye compounds and inorganic oxidations owing to its photocatalytic activity, excellent biological and chemical stability, and nonpolluting characteristics [3,4]
The peak of 167.11 cm−1 is caused by the O–Ti–O asymmetrical stretching vibration, while the peak of 335.39 cm−1 is induced by the symmetrical bending of O–Ti–O and the asymmetrical stretching vibration of O–Ti–O
For the other samples, such as 0#, pronounced Raman peaks located at 144 cm−1, 448 cm−1 and 612 cm−1 can be observed, which are attributed to the B1g, Eg and A1g vibration modes of rutile phase, respectively
Summary
Titanium dioxide (TiO2 ), as one type of semiconductor material, exhibits significant advantages in tackling toxic, refractory organic dye compounds and inorganic oxidations owing to its photocatalytic activity, excellent biological and chemical stability, and nonpolluting characteristics [3,4]. The production of substantial quantities of the hydroxyl radical assisted by TiO2 photocatalyst is essential for truly effective pollutant decomposition [5,6,7,8]. Many researchers attempted to modify TiO2 to obtain superior photocatalytic activity, including heterojunction, doping, dye sensitization, noble metal deposition and coupled semiconductors [5,9,10,11,12,13,14,15]. Non-metal doping has proven to be effective in enhancing the photo-response extent of
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
