教師資料查詢 | 類別: 期刊論文 | 教師: 彭維鋒 Pong, Way-faung (瀏覽個人網頁)

標題:Nitrogen-doped Carbon Spheres: An X-ray Absorption Near-edge Structure Spectroscopy Study
學年102
學期1
出版(發表)日期2013/08/09
作品名稱Nitrogen-doped Carbon Spheres: An X-ray Absorption Near-edge Structure Spectroscopy Study
作品名稱(其他語言)
著者Sekhar C. Ray; Zikhona N. Tetana; Rudolph Erasmus; Pong, Way-Faung; Neil J. Coville
單位淡江大學物理學系
出版者Heidelberg: Springer
著錄名稱、卷期、頁數Applied Physics A 115(1), pp.153-157
摘要Carbon spheres (CSs) and low content nitrogen (2.5 and 3.5 at%) doped carbon spheres (NCSs) were synthesized by a pyrolysis process at 900 °C using C2H2 and CH3CN. The electronic structure and chemical bonding of CSs and NCSs were studied using Raman spectroscopy, valence-band photoemission spectroscopy (VBPES) and X-ray absorption near-edge structure spectroscopy (XANES). XANES spectroscopy showed the effect of carbon and nitrogen bonds and graphitic as well as pyridinic structures on the NCS structure. For the spheres VBPES showed the effect of nitrogen on the spectral shape of the density of states and confirmed the role played by the π bonds in controlling the electronic and structural properties of the NCSs. VBPES also showed that both π and σ bands shift towards higher binding energies after N-doping which is consistent with the XANES data. The consistency of the spherical geometry, chemical purity, suitable electronic/bonding structure and the availability of macroscopic quantities of the N–CSs makes these spheres promising new materials for different applications.
關鍵字
語言英文
ISSN1432-0630
期刊性質國外
收錄於SCI;
產學合作
通訊作者Sekhar C. Ray
審稿制度
國別德國
公開徵稿
出版型式,電子版,紙本
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