(1. 湖南理工学院 化学化工学院，岳阳 414006；
2. 中南大学 化学化工学院，长沙 410083；
3. 湖南理工学院 精细石油化工催化与分离湖南省重点实验室，岳阳 414006)
摘 要: 以葡萄糖为模板、聚乙二醇(PEG-4000)为分散剂通过一步水热法所得前驱体，经600 ℃焙烧4 h得到CuO/Al2O3光催化剂，并对样品进行XRD、SEM、TEM、BET、TG/DTA和XPS等表征分析。在模拟太阳光照射下，以甲基橙溶液的光催化降解考察样品的光催化活性，研究焙烧温度、添加PEG-4000对样品光催化活性的影响。结果表明：PEG-4000的添加对产物的晶相和比表面积有一定影响；当焙烧温度600 ℃，加入10%PEG-4000到前驱体CuO/Al2O3中时，光催化活性最佳；光照60 min后，0.5 g/L光催化剂用量对甲基橙的脱色率达96.7％，与未加PEG-4000的样品比较，相同条件下对甲基橙的脱色率提高6.5%。
关键字: CuO/Al2O3光催化剂；聚乙二醇；光催化降解；甲基橙
（1. School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China;
2. School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China;
3. Hunan Province Key Laboratory of Catalysis and Separation of Speciality Petrochemicals,
Hunan Institute of Science and Technology, Yueyang 414006, China）
Abstract:CuO/Al2O3 photocatalysts were prepared via one-pot hydrothermal process using glucose as template and polyethylene glycol (PEG-4000) as dispersion agent after calcination at 600 ℃ for 4 h. The as-prepared samples were characterized by XRD, SEM, TEM, BET, TG/DTA and XPS. The effect of PEG-4000 on crystallite phase and BET was observed. The photocatalytic activities of the as-obtained samples were evaluated by the degradation of methyl orange (MO) solution under simulated sunlight irradiation. The effects of calcination temperature and addition of PEG-4000 on the photocatalytic activity were investigated. The results show that the highest photocatalytic degradation efficiency is observed when adding 10% (mass fraction) PEG-4000 into CuO/Al2O3 in the starting materials and calcination temperature of 600 ℃. The maximum photocatalytic decoloration rate of MO is 96.7% within 60 min at photocatalyst concentration of 0.5 g/L, which increases by 6.5% compared to that of the sample without PEG-4000 under the same conditions.
Key words: CuO/Al2O3 photocatalyst; polyethylene glycol; photocatalytic degradation; methyl orange
