Japanese | English

トップページへ戻る

詳細

   
フルテキストURLフルテキストリンクなし
タイトルCathodic deposition of molybdenum and vanadium mixed oxyhydroxide films from V-substituted polymolybdophosphate
作成者Nakayama, Masaharu
Komatsu, Hiroyuki
Ozuka, Shotaro
Ogura, Kotaro
作成者ヨミナカヤマ, マサハル
コマツ, ヒロユキ
オズカ, ショウタロウ
オグラ, コウタロウ
作成者別表記中山, 雅晴
作成者所属山口大学大学院理工学研究科(工学)
内容記述(抄録等)We report a new electrochemical route for fabricating molybdenum and vanadium mixed oxyhydroxide films on Au electrode from Keggin-type vanadium-substituted polymolybdophosphate. The process involves a potentiodynamic reduction of aqueous 9-molybdo(VI)-3-vanadophosphosphate(V) ([Pmo_9V_3O_<40>]^<6->) in the potential region between 0 and -0.7 V versus Ag/AgCl. The resulting MoV oxyhydroxide film electrode gave a stable redox behavior in Na_2SO_4 electrolyte of pH 3. X-ray photoelectron spectroscopy revealed that this results from oxidation/reduction of Mo^<5+>/Mo^<6+> in the film which accompanies extraction/insertion of protons for charge compensation. The deposited V ions remained in the film upon repetitive potential cycling without affecting their oxidation state. Voltammetric data in the presence of sodium nitrite showed electrocatalytic activity of the Mo-V oxyhydroxide toward the electroreduction of nitrite.
本文言語eng
著者キーワードpolymolybdovanadophosphate
Mo-V mixed oxide
electrodeposition
X-ray photoelectron spectroscopy
資料タイプtext
出版者Elsevier
NII資料タイプ学術雑誌論文
査読の有無査読あり
ISSN0013-4686
NCIDAA00633261
掲載誌名Electrochimica acta
51
2
開始ページ274
終了ページ280
発行日2005
DOIinfo:doi/10.1016/j.electacta.2005.04.025
関連情報URL(IsPartOf)http://www.sciencedirect.com/science/journal/00134686
著者版/出版社版その他
リポジトリID2008010069
地域区分山口大学
URIhttp://www.lib.yamaguchi-u.ac.jp/yunoca/handle/2008010069