• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Separation and Purification Technology >Facile synthesis of Fe3O4/SiO2/molecularly imprinted hydroxyapatite nanocomposite and its enhanced photocatalytic degradation of target contaminant
【24h】

Facile synthesis of Fe3O4/SiO2/molecularly imprinted hydroxyapatite nanocomposite and its enhanced photocatalytic degradation of target contaminant

机译：Fe3O4 / SiO2 /分子印迹羟基磷灰石纳米复合材料的简便合成及其对目标污染物的光催化降解

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

A novel composite photocatalyst of core-shell structured Fe3O4/SiO2/molecularly imprinted hydroxyapatite with molecularly recognitive photoactivity has been successfully fabricated by a facile wet chemical process. Compared with Fe3O4/SiO2/hydroxyapatite, the Fe3O4/SiO2/molecularly imprinted hydroxyapatite exhibited a much higher photocatalytic selectivity for the degradation of template molecules in aqueous suspension. The excellent selectivity can be ascribed to the chemical interaction and size matching between template molecules and imprinted cavities. The photocatalytic activity of Fe3O4/SiO2/molecularly imprinted hydroxyapatite towards template molecules was enhanced significantly, a combined result of the decrease in the migration of photogenerated charge carriers to the inter layer by SiO2 interlayer and selective photodegradation of template molecules on the imprinted nanocomposites. The superparamagnetic properties of the Fe3O4/SiO2/molecularly imprinted hydroxyapatite provide a convenient route for separation of the catalyst from the reaction mixture by an external magnetic field. The spent catalyst could be recycled without appreciable loss of catalytic activity. (C) 2015 Elsevier B.V. All rights reserved.
机译：通过一种简便的湿法化学方法成功地制备了具有分子识别光活性的核-壳结构Fe3O4 / SiO2 /分子印迹羟基磷灰石的新型复合光催化剂。与Fe3O4 / SiO2 /羟基磷灰石相比，Fe3O4 / SiO2 /分子印迹羟基磷灰石对水悬浮液中模板分子的降解具有更高的光催化选择性。优异的选择性可以归因于模板分子与印迹腔之间的化学相互作用和尺寸匹配。 Fe3O4 / SiO2 /分子印迹羟基磷灰石对模板分子的光催化活性显着增强，其综合结果是：SiO2中间层减少了光生电荷载流子向中间层的迁移以及模板分子在印迹纳米复合材料上的选择性光降解。 Fe3O4 / SiO2 /分子印迹羟基磷灰石的超顺磁性为通过外部磁场从反应混合物中分离催化剂提供了便利的途径。废催化剂可以再循环而没有明显的催化活性损失。 （C）2015 Elsevier B.V.保留所有权利。

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