Abstract
An AlON carrier with light-transmitting performance and through-hole structure was prepared by carbothermal reduction and nitridation (CRN). The TiO2/AlON photocatalyst was prepared by hydrothermal method. Under vertical irradiation of the light source, the degradation rate of MB by TiO2(15%)/AlON photocatalyst was 97.3% after 180 min. And 88.8% MB was mineralized by determining the total organic carbon in the solution. An increase in TiO2 loading can accelerate the efficiency of TiO2/AlON degradation of MB within 0–90 min. At the same time, it will also exacerbate the blockage of AlON carrier and increase the amount of free TiO2. These can all exacerbate light loss, thereby shortening the penetration distance of light in the mixed liquid. Within the range of 90–180 min, the photocatalytic performance of TiO2(15%)/AlON powders was better than that of TiO2(25%)/AlON (97.3% vs 82.5%). In addition, TiO2/AlON photocatalyst was easy to cycle and has stable photocatalytic performance.
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