Proton conduction properties of nano-titania modified by sulfuric acid impregnation

Takaaki Sakai, Seok Jun Kim, Satoshi Kajitani, Jun Ichi Hamagami, Hiroyuki Oda, Maki Matsuka, Tatsumi Ishihara, Hiroshige Matsumoto

研究成果: ジャーナルへの寄稿記事

5 引用 (Scopus)

抄録

The proton conduction properties of sulfuric acidmodified nano-titania prepared by impregnation method were investigated. The proton conductivity of sulfuric acid-modified nano-titania was almost the same as that of hydrous sulfated nano-titania investigated in our previous work when the amount of adsorbed sulfate groups was almost the same. The highest conductivity was obtained at an adsorbed sulfate group amount of 0.42 mmol/g, not 0.97 mmol/g. This result indicates that the enhancement of conductivity with increasing amount of adsorbed sulfate groups is limited. This might be attributable to insufficient water molecule adsorption on the Ti 4+ site coordinated with a bidentate sulfate group due to the prevention by excess sulfuric acid.

元の言語英語
ページ(範囲)2055-2059
ページ数5
ジャーナルJournal of Solid State Electrochemistry
16
発行部数6
DOI
出版物ステータス出版済み - 6 1 2012

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sulfuric acid
Sulfuric acid
Impregnation
Sulfates
Protons
sulfates
titanium
Titanium
conduction
protons
conductivity
Proton conductivity
Adsorption
Molecules
adsorption
titanium dioxide
Water
augmentation
water
molecules

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Electrochemistry
  • Electrical and Electronic Engineering

これを引用

Proton conduction properties of nano-titania modified by sulfuric acid impregnation. / Sakai, Takaaki; Kim, Seok Jun; Kajitani, Satoshi; Hamagami, Jun Ichi; Oda, Hiroyuki; Matsuka, Maki; Ishihara, Tatsumi; Matsumoto, Hiroshige.

:: Journal of Solid State Electrochemistry, 巻 16, 番号 6, 01.06.2012, p. 2055-2059.

研究成果: ジャーナルへの寄稿記事

Sakai, Takaaki ; Kim, Seok Jun ; Kajitani, Satoshi ; Hamagami, Jun Ichi ; Oda, Hiroyuki ; Matsuka, Maki ; Ishihara, Tatsumi ; Matsumoto, Hiroshige. / Proton conduction properties of nano-titania modified by sulfuric acid impregnation. :: Journal of Solid State Electrochemistry. 2012 ; 巻 16, 番号 6. pp. 2055-2059.
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abstract = "The proton conduction properties of sulfuric acidmodified nano-titania prepared by impregnation method were investigated. The proton conductivity of sulfuric acid-modified nano-titania was almost the same as that of hydrous sulfated nano-titania investigated in our previous work when the amount of adsorbed sulfate groups was almost the same. The highest conductivity was obtained at an adsorbed sulfate group amount of 0.42 mmol/g, not 0.97 mmol/g. This result indicates that the enhancement of conductivity with increasing amount of adsorbed sulfate groups is limited. This might be attributable to insufficient water molecule adsorption on the Ti 4+ site coordinated with a bidentate sulfate group due to the prevention by excess sulfuric acid.",
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AU - Sakai, Takaaki

AU - Kim, Seok Jun

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AU - Hamagami, Jun Ichi

AU - Oda, Hiroyuki

AU - Matsuka, Maki

AU - Ishihara, Tatsumi

AU - Matsumoto, Hiroshige

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