How photocatalytic activity of the MAO-grown TiO2 nano/micro-porous films is influenced by growth parameters?

Micro-arc oxidation of TC4 substrates to fabricate TiO2/YAG:Ce3+ compound films with enhanced photocatalytic activity

“…Generally speaking, only anatase TiO 2 exhibits superior photocatalytic activity. It has been known that TiO 2 crystal structure can be controlled by adjusting the parameters, such as voltage, duty cycle and oxidation time during MAO [14]. In this experiment, anatase phase, as shown in Fig.…”

“…The oxide film formed via MAO exhibits good adhesion to substrate, excellent chemical durability, high abradability and high temperature resistance, etc. When Ti or Ti alloys is used as a substrate, an excellent adhesive TiO 2 film will be made on it, and the surface morphology, film thickness and phase structure of the film can be controlled by adjusting the experimental conditions such as electrical parameters [14,15] and electrolyte components [16], for improving its photocatalytic property. Yttrium aluminum garnet (YAG, Y 3 Al 5 O 12 ) has been recognized as one of the best phosphor host materials.…”

An innovative technique to simply fabricate ZrO2–HA–TiO2 nanostructured layers

“…It has been shown before that when a structural pore forms by an electrical spark during MAO, it is more susceptible for next electron avalanches. The reason is that these areas have lower breakdown voltages when compared to other areas which are not porous [60]. Sequence of the electrical sparks at one point makes the pores larger.…”

How deposition parameters affect corrosion behavior of TiO2-Al2O3 nanocomposite coatings

“…Surface pores form due to the electric discharges on the anode surface. According to the model already developed by our group [49], when the applied voltage exceeds the breaking voltage of oxide and gaseous layers enshrouding the anode, the electric sparks appear at the spots with lower electric resistance on the anode surface [14]. A comparison was made between size and density of micropores on the surface of the coatings obtained from electrolytes A1 and A3.…”

“…Ceramic coatings have been recently found promising for a variety of industrial applications in order to improve wear resistance [1][2][3], corrosion resistance [4][5][6][7][8], heat resistance [9], biocompatibility [10][11][12][13], and photocatalystic activity [14][15][16][17][18][19] of metals and alloys. These coatings are fabricated by different techniques such as oxidation of the metal surfaces [3,[20][21][22], sol-gel process [19], vapor phase deposition [23,24], electrophoresis [25], and thermal spray [26,27].…”