• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Surface Science >The structure and the photocatalytic activity of titania based nanotube and nanofiber coatings
【24h】

The structure and the photocatalytic activity of titania based nanotube and nanofiber coatings

机译：二氧化钛基纳米管和纳米纤维涂料的结构和光催化活性

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

The photocatalytic activity of TiO2 based nanotube (TNT) and nanofiber (TNF) coatings has been investigated, in correlation to their structure, morphology, specific surface area, acidity and the amount of surface H2O molecules and -OH groups. Characterization of these materials was carried out using grazing incidence X-ray diffraction (GIXRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), Raman spectroscopy, and diffuse reflectance infrared Fourier transform spectroscopy (DRIFT). The photocatalytic activity has been quantified by two different methods, based on the photodegradation of methylene blue (the pattern of water-soluble organic pollutant) and acetone (the pattern of volatile organic pollutant), respectively. Results of our investigations revealed that TNF coatings were significantly more active in case of both photodegradation processes in air and water, as compared to TNT, even if the specific surface area of TNF films was smaller than the adequate surface area of TNT. The microstructure of produced materials, the amount of adsorbed -OH groups and H2O molecules located on the surface of materials, and the acidity of the surface, were the main factors which affect their photoactivity. Photocatalytic properties of tubular and porous TiO2-based materials are the resultant of the compilation of individual factors impact and any of them cannot be neglected. (C) 2016 Elsevier B.V. All rights reserved.
机译：已经研究了基于TiO2的纳米管（TNT）和纳米纤维（TNF）涂层的光催化活性，并与其结构，形态，比表面积，酸度以及表面H2O分子和-OH基团的数量相关。使用掠入射X射线衍射（GIXRD），X射线光电子能谱（XPS），扫描电子显微镜（SEM），高分辨率透射电子显微镜（HRTEM），拉曼光谱和漫反射率对这些材料进行表征红外傅里叶变换光谱（DRIFT）。分别基于亚甲基蓝（水溶性有机污染物的模式）和丙酮（挥发性有机污染物的模式）的光降解，通过两种不同的方法对光催化活性进行了定量。我们的研究结果表明，即使在TNF膜的比表面积小于TNT的足够表面积的情况下，与TNT相比，在空气和水中的光降解过程中TNF涂层的活性也显着提高。产生的材料的微观结构，位于材料表面的-OH基团和H2O分子的吸附量以及表面的酸度是影响其光活性的主要因素。管状和多孔TiO2基材料的光催化性能是影响各个因素的综合结果，它们中的任何一个都不容忽视。 （C）2016 Elsevier B.V.保留所有权利。

著录项

  • 来源
    《Applied Surface Science》 |2016年第15期|165-172|共8页
  • 作者

    Radtke A.; Piszczek P.; Topolski A.; Lewandowska Z.; Talik E.; Andersen I. Hald; Nielsen L. Pleth; Heikkila M.; Leskela M.;

  • 作者单位

    Nicolaus Copernicus Univ, Fac Chem, Ul Gagarina 7, PL-87100 Torun, Poland;

    Nicolaus Copernicus Univ, Fac Chem, Ul Gagarina 7, PL-87100 Torun, Poland;

    Nicolaus Copernicus Univ, Fac Chem, Ul Gagarina 7, PL-87100 Torun, Poland;

    Nicolaus Copernicus Univ, Fac Chem, Ul Gagarina 7, PL-87100 Torun, Poland;

    Univ Silesia, A Chelkowski Inst Phys, Ul Uniwersytecka 4, PL-40007 Katowice, Poland;

    Danish Technol Inst, Tribol Ctr, Kongsvang Alle 29, DK-8000 Aarhus C, Denmark;

    Danish Technol Inst, Tribol Ctr, Kongsvang Alle 29, DK-8000 Aarhus C, Denmark;

    Univ Helsinki, Dept Chem, Inorgan Chem Lab, Ctr Excellence,Fac Sci, AI Virtasen Aukio 1, FI-00014 Helsinki, Finland;

    Univ Helsinki, Dept Chem, Inorgan Chem Lab, Ctr Excellence,Fac Sci, AI Virtasen Aukio 1, FI-00014 Helsinki, Finland;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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