CAJ | 학술논문

采用X射线衍射和紫外-可见光漫反射对用溶胶-凝胶法制备的氮掺杂纳米TiO2光催化剂进行了表征分析.以弱酸性艳蓝A染料溶液为目标净化物,研究了该催化剂的可见光催化性能.结果表明：氮掺杂纳米TiO2粉体的粒径为16.5 nm,锐钛矿相含量为98.7%,对紫外光和可见光均有较强吸收,其吸收边带达618 nm；催化剂用量为0.25 g,在300 W金卤灯下照射240 min,pH=2或12,对100 mL质量浓度为40 mg/L弱酸性艳蓝A染料溶液的净化率达99.2%.
채용X사선연사화자외-가견광만반사대용용효-응효법제비적담참잡납미TiO2광최화제진행료표정분석.이약산성염람A염료용액위목표정화물,연구료해최화제적가견광최화성능.결과표명：담참잡납미TiO2분체적립경위16.5 nm,예태광상함량위98.7%,대자외광화가견광균유교강흡수,기흡수변대체618 nm；최화제용량위0.25 g,재300 W금서등하조사240 min,pH=2혹12,대100 mL질량농도위40 mg/L약산성염람A염료용액적정화솔체99.2%.
N-doped nano-TiO2 photocatalyst was prepared by sol-gel method and characterized by X-ray diffraction (XRD) and ultraviolet visible light spectroscope (UV-Vis DRS). The visible light photocatalytic properties of the photocatalyst were investigated using Weak Acid Blue A dye solution as the target degrada-tion pol utant. The results showed that the particle size, content of anatase phase, and absorption band edge of photocatalysts were 16.5 nm, 98.7% and 618 nm, respectively, which had a higher absorption for ultraviolet and visible light. When the dosage of photocatalysts was 0.25 g, and the initial concentration and dosage of the weak Acid Blue A dye solution was 40 mg/L and 10.0 mL, the photodegradation rate of dye was 99.2%under 300 W metal halide lamp radiation for 240 min and the pH=2 or 12.