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Application of N-F-codoped TiO2for the photocatalytic reduction of Cr(VI) under visible light irradiation

  • Qi Wang*
  • , Zhaohui Wang
  • , Yi Zhang
  • , Yanqing Cong
  • , Jincai Zhao
  • , Peide Sun
  • *此作品的通讯作者
  • Zhejiang Gongshang University
  • Donghua University
  • CAS - Institute of Chemistry

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

The visible light responsive N-F-codoped TiO2 (hereafter denoted as NFT) was prepared by sol-gel method using NH4F as precursor. NFT powders were characterized by X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and ultravioletvisible diffuse reflection spectroscopy (UV-Vis-DRS). The asprepared NFT powders could efficiently reduce Cr(VI) to Cr(III) under visible light irradiation. The photocatalytic activities of NFT on the reduction of Cr(VI) was found to be strongly dependent on pH and the initial concentration of dopant. At low pH, the reduction efficiency was high. The activity increased firstly with the increase of initial dopant concentration and then decreased gradually. The highest activity was achieved when the initial NH4F /Ti molar ratio was 3. Moreover, addition of organic substances can greatly enhanced the Cr(VI) reduction rate due to synergistic effect. This study demonstrates a facile, fast and reproducible synthesis method for visible light responsive NFT photocatalyst and a potential way for environmental cleanup.

源语言英语
主期刊名2010 4th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2010
DOI
出版状态已出版 - 2010
已对外发布
活动4th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2010 - Chengdu, 中国
期限: 18 6月 201020 6月 2010

出版系列

姓名2010 4th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2010

会议

会议4th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2010
国家/地区中国
Chengdu
时期18/06/1020/06/10

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