• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of nano research >Photocatalytic Degradation of Antibacterial Sulfanilamide from Aqueous Solution Using TiO2 Nanocatalyst
【24h】

Photocatalytic Degradation of Antibacterial Sulfanilamide from Aqueous Solution Using TiO2 Nanocatalyst

机译：TiO2纳米催化剂对水溶液中抗菌素磺酰胺的光催化降解

获取原文
获取原文并翻译 | 示例
       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Photocatalytic degradation of sulfanilamide (SNM) as a kind of pollutant agent through titanium dioxide nano particles (TiO2) under UV irradiation was evaluated. The effect of different parameters, such as TiO2 and SNM concentrations, amount of pH, inorganic salt and type of light source on the reaction rate was investigated. The results show that SNM was completely removed from the solution after 60 min under UV irradiation. Furthermore, kinetic studied were performed at 25 degrees C over different ranges of SNM concentrations from 100 to 300 ppm, TiO2 concentrations from 0.05 to 1 gL(-1) and pH of suspensions from 3 to 11. In this range of concentration of materials, a Langmuir-Hinshelwood kinetic model can describe the process. An overall pseudo-first order kinetic constant was calculated for sulfanilamide conversion. The optimum TiO2 loading, which provides enough surface area for reaction without irradiation loss due to scattering of UV light, was found to be 0.1gL(-1), and SNM concentration was 100 ppm. Higher degradation efficiency of SNM was observed at pH=9. Finally, the results of this work proved that photocatalysis of SNM is a promising technology to reduce persistent substances even if they are present in low concentrations.
机译：评估了紫外线辐射下二氧化钛纳米粒子（TiO2）光催化降解磺胺类药物（SNM）作为一种污染物的作用。研究了TiO2和SNM浓度，pH值，无机盐和光源类型等不同参数对反应速率的影响。结果表明，在紫外线照射下60分钟后，SNM已从溶液中完全去除。此外，在25摄氏度下对SNM浓度从100到300 ppm，TiO2浓度从0.05到1 gL（-1）和悬浮液的pH值从3到11的不同范围进行了动力学研究。在此浓度范围内， Langmuir-Hinshelwood动力学模型可以描述这一过程。计算了磺酰胺转化的总拟一级动力学常数。发现最佳的TiO2负载量为0.1gL（-1），可为反应提供足够的表面积，而不会因紫外线的散射而造成辐射损失，其SNM浓度为100 ppm。在pH = 9时观察到更高的SNM降解效率。最后，这项工作的结果证明了SNM的光催化技术是一种减少持久性物质的有前途的技术，即使它们以低浓度存在。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号