...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Enhanced photocatalytic and adsorptive degradation of organic dyes by mesoporous Cu/Al_2O_3-MCM-41: Intra-particle mesoporosity, electron transfer and OH radical generation under visible light
【24h】

Enhanced photocatalytic and adsorptive degradation of organic dyes by mesoporous Cu/Al_2O_3-MCM-41: Intra-particle mesoporosity, electron transfer and OH radical generation under visible light

机译：介孔Cu / Al_2O_3-MCM-41增强的有机染料的光催化和吸附降解：可见光下的粒子内介孔性，电子转移和OH自由基的产生

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

Mesoporous Cu/Al_2O_3-MCM-41 composite was synthesized by two step processes; in situ incorporation of high surface area mesoporous Al_2O_3 (MA) into the framework of MCM-41 (in situ method) followed by impregnation of Cu(II) by incipient wetness method. The interesting thing is that starch was used for the first time as template for the preparation of high surface area MA. To evaluate the structural and electronic properties, these catalysts were characterized by low angle X-ray diffraction (LXRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), UV-vis DRS, FTIR and photoluminescent (PL) spectra. The various cationic dye such as methylene blue (MB), methyl violet (MV), malachite green (MG) and rhodamine 6G (Rd 6G) of high concentration 500 mg L~(-1) were degraded and adsorbed very efficiently (100%) using the 5 Cu/Al_2O_3-MCM-41 composite within 30 and 60 min, respectively. The high and quick removal of such concerted cationic organic dyes and also mixed dyes (MB+MV+MG+Rd 6G) by means of photocatalysis/adsorption is basically due to the combined effect three characteristics of synthesized mesoporous 5 Cu/Al_2O _3-MCM-41 composite. These characteristics are intra-particle mesoporosity, electron transfer and OH radical generation under solar light.
机译：分两步合成了介孔Cu / Al_2O_3-MCM-41复合材料。原位法将高表面积介孔Al_2O_3（MA）原位掺入MCM-41的框架中（原位法），然后通过初期润湿法浸渍Cu（II）。有趣的是，淀粉首次用作制备高表面积MA的模板。为了评估结构和电子性能，这些催化剂的特征在于低角度X射线衍射（LXRD），X射线光电子能谱（XPS），透射电子显微镜（TEM），UV-vis DRS，FTIR和光致发光（PL）光谱。高浓度500 mg L〜（-1）的各种阳离子染料如亚甲基蓝（MB），甲基紫（MV），孔雀石绿（MG）和若丹明6G（Rd 6G）都被降解和吸附（100％ ）分别在30和60分钟内使用5 Cu / Al_2O_3-MCM-41复合材料。通过光催化/吸附法快速高效地去除这类协同阳离子有机染料以及混合染料（MB + MV + MG + Rd 6G）的原因主要是合成介孔的5 Cu / Al_2O _3-MCM的三个特性的综合作用-41复合。这些特征是太阳光下的颗粒内介孔性，电子转移和OH自由基的产生。

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