Study of the influence of anodizing parameters on the photocatalytic activity of preferred oriented TiO2 nanotubes self-doped by carbon

Study of the Photocatalytic Properties of Ni-Doped Nanotubular Titanium Oxide

“…SCS10-PEC (Zolix Instruments Co. Beijing, China) equipped with an electrochemical analyzer CHI600e was used to irradiate light at a given wavelength in the range from 300 to 480 nm with a step of 2.5 nm. IPCE measurements were conducted using a three-electrode cell with the following: the working electrode (WE)-NTO samples in the form of Ti/TiO 2 or Ti/Ni-TiO 2 plates, counter electrode (CE)-Pt, and the reference electrode (RE-Ag/AgCl and 0.1 M KNO 3 at an applied potential of 800 mV vs RE in accordance with procedures described elsewhere [11,15,[42][43][44]. PEC activity was calculated according to the IPCE parameter by the following Equation (1):…”

“…To examine the PEC properties based on current parameter measurements of the electrolyte cell during irradiation with light of a given wavelength at a given potential, the method is similar to that described in [11,44].…”

“…It is usually synthesized by the hydrolysis of titanium salt solutions [1,2], hydro or solvo-thermal techniques [3][4][5][6], chemical vapor deposition [7,8], and anodizing. The latter allows obtaining nanostructured oxide coatings with a large specific surface area on titanium [9][10][11][12][13][14][15][16][17][18], aluminum [19][20][21][22][23][24][25][26], and other metals and alloys [27][28][29]. Yuferov et al previously studied the dependence of the photocatalytic properties of nanotubular titanium oxide (NTO) on the anodizing process [11].…”

“…The latter allows obtaining nanostructured oxide coatings with a large specific surface area on titanium [9][10][11][12][13][14][15][16][17][18], aluminum [19][20][21][22][23][24][25][26], and other metals and alloys [27][28][29]. Yuferov et al previously studied the dependence of the photocatalytic properties of nanotubular titanium oxide (NTO) on the anodizing process [11]. Authors have shown that the change in anodizing parameters affects the photocatalytic properties; however, it has limitations in improving the photoelectrochemical (PEC) efficiency in PCWS processes.…”

Supercapacitive performance of C-axis preferentially oriented TiO2 nanotube arrays decorated with MoO3 nanoparticles

“…[44][45][46] Literature research found that the (004) crystal-oriented TiO 2 NTAs show a higher electron transport rate than that of the polycrystalline TiO 2 NTAs attributed to their regular arrangement of grains along the [001] orientation in the nanotube walls. [47][48][49][50][51] Although a large number of studies reported in the literature have demonstrated that three-dimensional TiO 2 NTAs can be used as good support materials for metal oxides to be applied in supercapacitors, the impact of TiO 2 NTAs with different crystal structure orientations on supercapacitors has been rarely reported. Hence, we fabricated different crystaloriented TiO 2 NTAs decorated with MoO 3 nanoparticles via facile electrochemical deposition on a nanotube surface and studied their application in supercapacitors.…”