首页|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

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

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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%.
Optimization of La-doped Bismuth Vanadate Photocatalyst Preparation and Degradation of Tetracycline Antibiotics Using Response Surface Methodology
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.

response surface methodologyphotocatalysislanthanum dopingbismuth vanadatetetracycline antibiotics

姚英、丁莉峰、王晓宇、宋永波

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太原工业学院化学与化工系, 山西 太原 030008

响应面法 光催化 镧掺杂 钒酸铋 四环素类抗生素

山西省研究生教育教学改革课题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太原工业学院教学改革研究项目

2021YJJG321J2019199JG201913ZY-2020201

2024

10.16525/j.cnki.cn14-1109/tq.2024.02.001

山西化工
山西省煤化工发展促进中心 山西省化工学会

山西化工

影响因子：0.293
ISSN：1004-7050
年,卷(期)：2024.44(2)
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