English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 49378/84106 (59%)
造訪人次 : 7373807      線上人數 : 76
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/108024


    題名: Unraveling the Origin of Visible Light Capture by Core-Shell TiO2 Nanotubes
    作者: Li, Jun;Liu, Chang-Hai;Li, Xia;Wang, Zhi-Qiang;Shao, Yu-Cheng;Wang, Sui-Dong;Sun, Xue-Liang;Pong, Way-Faung;Guo, Jing-Hua;Sham, Tsun-Kong
    日期: 2016/06/24
    上傳時間: 2016-10-22 02:10:38 (UTC+8)
    出版者: American Chemical Society
    摘要: A black TiO2 nanotube (NT) heterostructure with an anatase-core and an amorphous-shell has been synthesized by NH3 annealing of amorphous NT grown by the anodization of a Ti substrate. Remarkable photoabsorption behavior of these black TiO2 NTs is observed: strong absorption throughout the entire optical wavelength region from ultraviolet to near-infrared. X-ray absorption near-edge structure (XANES), X-ray photoelectron spectroscopy (XPS) and resonant inelastic X-ray scattering (RIXS) have been used to elucidate the origin of this spectacular light capture phenomenon. Surface-sensitive XANES recorded in total electron yield and XPS show that the surface layer is amorphous with a chemical composition approaching that of Ti4O7. Bulk-sensitive XANES using X-ray partial fluorescence yield and Ti 2p RIXS confirm the presence of a rich amount of Ti3+ in the crystalline bulk (core of the NT with anatase structure) of black TiO2 NTs, which exhibits a dispersive d-d energy loss at ∼2 eV corresponding to the broad visible light absorption at ∼600 nm. Our results suggest that the extraordinary photoabsorption behavior of these black TiO2 NTs is due to the stabilization of Ti3+ in this special N-doped core–shell assembly having structure varying between TiO2 (bulk anatase) and Ti4O7 (surface, amorphous).
    關聯: Chemistry of Materials 28(12), pp.4467-4475
    DOI: 10.1021/acs.chemmater.6b01673
    顯示於類別:[物理學系暨研究所] 期刊論文

    文件中的檔案:

    檔案 描述 大小格式瀏覽次數
    index.html0KbHTML79檢視/開啟

    在機構典藏中所有的資料項目都受到原著作權保護.

    TAIR相關文章

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回饋