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以NH4Cl为氮源,采用溶胶-凝胶法制备N掺杂纳米TiO2,以4-氯苯酚和TOC降解率为指标,考察灼烧温度、搅拌速度、溶液pH值等因素对N掺杂TiO2可见光活性及动力学方程的影响。结果表明,N掺杂TiO2对4-氯苯酚具有良好的降解作用,在灼烧温度400℃、快速搅拌、pH值为4.6下,4-氯苯酚降解率最大,在可见光辐射6h时达到87%。降解反应符合Langmuir-Hinshelwood动力学方程。
N-doped nano-TiO2 was prepared by sol-gel method using NH4Cl as nitrogen source. The influences of burning temperature, stirring speed and pH value on N-doped TiO2 visible light were investigated with 4-chlorophenol and TOC degradation rate Effect of activity and kinetic equation. The results showed that N-doped TiO2 had a good degradation effect on 4-chlorophenol. The degradation rate of 4-chlorophenol was the highest at the burning temperature of 400 ℃ and the stirring speed of 4.6 at pH 4.6, reaching 87% at 6 h of visible light irradiation. . The degradation reaction conformed to the Langmuir-Hinshelwood kinetic equation.