响应面法优化La掺杂钒酸铋光催化剂的制备及降解四环素类抗生素
Optimization of La-doped Bismuth Vanadate Photocatalyst Preparation and Degradation of Tetracycline Antibiotics Using Response Surface Methodology
姚英 1丁莉峰 1王晓宇 1宋永波1
作者信息
- 1. 太原工业学院化学与化工系, 山西 太原 030008
- 折叠
摘要
本文是以五水合硝酸铋[Bi(NO3)3·5H2O]、偏钒酸铵(NH4VO3),硝酸镧(La(NO3)3)为主要原料,采用水热法制备La-BiVO4 催化剂,光催化降解以盐酸四环素为模型反应的抗生素,通过紫外可见分光光度计,对盐酸四环素降解前后的吸光度进行测定进而得出降解率.主要研究了镧掺杂量、焙烧温度、焙烧时间等条件对La-BiVO4 光催化剂性能的影响.并用Box-Behnken响应面法设计优化实验条件,分析各影响因素间的交互作用.结果表明,当La的掺杂量为 0.44 g、焙烧温度为 503℃、焙烧时间为 3.1 h时制备的La-BiVO4 光催化剂降解盐酸四环素的降解率最佳,为 76.69%.
Abstract
This article uses bismuth nitrate pentahydrate[Bi(NO3)3·5H2O],ammonium metavanadate(NH4VO3),and lanthanum nitrate(La(NO3)3)as the main raw materials to prepare La-BiVO4 catalyst by hydrothermal method.The photocatalytic degradation of antibiotics using tetracycline hydrochloride as a model reaction is carried out.The absorbance before and after the degradation of tetracycline hydrochloride is measured using a UV visible spectrophotometer to determine the degradation rate.The main study investigated the effects of lanthanum doping amount,calcination temperature,calcination time and other conditions on the performance of La-BiVO4 photocatalysts.And use Box Behnken response surface methodology to design and optimize experimental conditions,and analyze the interaction between various influencing factors.The results showed that the La-BiVO4 photocatalyst prepared with a La doping amount of 0.44 g,calcination temperature of 503℃,and calcination time of 3.1 h had the best degradation rate of 76.69%for tetracycline hydrochloride degradation.
关键词
响应面法/光催化/镧掺杂/钒酸铋/四环素类抗生素Key words
response surface methodology/photocatalysis/lanthanum doping/bismuth vanadate/tetracycline antibiotics引用本文复制引用
基金项目
山西省研究生教育教学改革课题(2021YJJG321)
山西省高等学校科技创新项目(2021)()
山西省教学厅高等学校教学改革创新项目(J2019199)
山西省一流本科专业建设点建设()
太原工业学院教学改革研究项目(JG201913)
太原工业学院教学改革研究项目(ZY-2020201)
出版年
2024
NETL
NSTL
万方数据