摘要
本研究利用Ag掺杂型TiO_2粉末,以盐酸四环素为目标污染物,于可见光下光催化降解四环素类抗生素废水。通过光催化降解盐酸四环素的实验初步分析,优化实验条件,确定最佳投加量,最佳pH,最佳初始浓度。结果表明:Ag-TiO_2光催化剂投加量为0.8g/L,初始浓度为50mg/L,pH=5.2的盐酸四环素溶液降解120min后,降解率可达90%以上;通过与德固赛P-25粉末进行对比试验,Ag掺杂型TiO_2粉末催化效率比德固赛P-25提升了37.4%,Ag-TiO_2光催化剂是一种优良的可见光光催化剂,具有一定的水处理应用价值。
The serious environmental pollution caused by abuse of antibiotics has attracted the wide attention, and it is difficult to meet the discharge standard by the traditional treatment process. Using Ag-doped TiO2 powder and with tetracycline hydrochloride as the target pollutant, this study intends to degrade tetracycline antibiotic wastewater by visible light. Through the preliminary analy-sis of the photocatalytic degradation of tetracycline hydrochloride, the best dosage, pH and initial concentration were determined by optimizing the experimental conditions. The results showed that the degradation rate of Ag-TiO2 photocatalysts was 0.8g / L, the ini-tial concentration was 50 mg/ L, and the degradation rate of tetracycline hydrochloride was more than 90% after 120min degradation. Compared to the result of Degussa P-25, it was found that the Ag-TiO2 had a good visible response and its catalytic efficiency was improved 37.4% to that of P-25, so that it would greatly improve the utilization value of photocatalytic oxidation wastewater.
出处
《科技创新与应用》
2018年第13期30-32,共3页
Technology Innovation and Application
基金
吉林省科技厅自然科学基金(编号:20150101093C)
关键词
光催化氧化
AG掺杂
TiO2改性
盐酸四环素
可见光
photocatalytic oxidation
Ag-doped
TiO： modification
tetracycline hydrochloride
visible light
