教師資料查詢 | 類別: 期刊論文 | 教師: 林正嵐 Cheng-lan Lin (瀏覽個人網頁)

標題:A study on the deposition efficiency, porosity and redox behavior of Prussian blue thin films using an EQCM
學年90
學期2
出版(發表)日期2002/05/03
作品名稱A study on the deposition efficiency, porosity and redox behavior of Prussian blue thin films using an EQCM
作品名稱(其他語言)
著者林正嵐; Ho, K.-C.
單位淡江大學化學工程與材料工程學系
出版者
著錄名稱、卷期、頁數Journal of Electroanalytical Chemistry 524-525, pp.286-293
摘要The deposition efficiency, porosity and redox behavior of Prussian blue (PB) thin films are investigated. To find better deposition conditions, the PB thin films were deposited on a Pt electrode using a potentiostatic method proposed by Mortimer and Rosseinsky (J. Electroanal. Chem. 151 (1983) 133). The optimal deposition potential was determined to be 0.50 V (vs. Ag | AgCl) by considering the deposition efficiency and the time needed for the deposition. The mass change on the Pt electrode was monitored using an electrochemical quartz crystal microbalance (EQCM) during the PB deposition. The deposition efficiency was calculated to be about 38% based on the charge consumption of the PB thin film during the reduction at optimal deposition conditions. The porosity of the PB thin film was estimated to be 0.39 for a PB film with a thickness of 1860 Å. During the redox reactions, cations in the electrolytic solutions must be inserted into or extracted out of the PB thin film. The lattice structure of the PB thin film limits its ease of cation insertion. It was found that K+ can move in and out of the PB lattices much more easily than Li+ because the hydrated radii of the K+ ions are smaller than those of the Li+ ions. Nevertheless, reduction of the PB thin film can be carried out partially and irreversibly in solutions containing Li+ or H3O+ alone. However, a mass loss for the thin film was observed.
關鍵字Deposition efficiency;Electrochemical quartz crystal microbalance (EQCM);Porosity;Prussian blue (PB)
語言英文
ISSN1873-2569;1572-6657
期刊性質國外
收錄於SCI;EI;
產學合作
通訊作者
審稿制度
國別荷蘭
公開徵稿
出版型式,電子版,紙本
相關連結
Google+ 推薦功能,讓全世界都能看到您的推薦!