Al-B-TiO2 Photocatalyst Prepared by Solvothermal Method

Abstract

Al-B-TiO₂ photocatalysts were prepared by solvothermal method using tetrabutyl titanate, tributyl borate and aluminum isopropoxide as the initial precursors at calcination temperature of 400 ºC or 500 ºC. Boron doping content was fixed at 3 % in all the samples and aluminum content varied in different samples. The adsorption volume of N₂ on the material increased at higher N₂ relative pressure P/P_o. The pore sizes of the material distributed mainly in the range from 2-20 nm. The total pore volumes were 0.352 and 0.321 mL/g and BET specific surface areas were 113.24 and 78.6 m²/g for the materials calcinated at 400 and 500 ºC, respectively. The maximum degradation rate, 34.1 % degradation of the initial methyl orange, appeared on the sample containing 1 % Al at calcination temperature of 500 ºC.