Effect of surface morphology of a SiO2/Si reference electrode modified by ODMS on the responses to pH and ionic strength

Jinping Wang, Junji Sasano, Tetsuya Osaka

研究成果: Conference contribution

抜粋

The purpose of this work was to study the effect of surface morphology on the responses to pH and ionic strength of a SiO2/Si reference electrode (RE) modified by octadecyltrimethoxysilane (ODMS). Representative REs with contact angles (CA) of 60°, 80° and 106° were studied in various solutions: those with combined effects of pH and ionic strength, those with ionic strength variation and constant pH, and those with pH variation and constant ionic strength. REs with the flat surface show response to ionic strength, while REs with the rough surface show response to pH. The reason may be that total ionic strength determines the charge and potential distribution in the electrolyte-insulator-semiconductor structure for REs with flat surfaces, but that the combined effects of uncovered binding sites, penetration of H + into pinholes, and the special adsorption of H+ dictate the charge and potential distribution for REs with rough surfaces.

元の言語English
ホスト出版物のタイトルECS Transactions - Chemical Sensors 8
ホスト出版物のサブタイトルChemical (Gas, Ion, Bio) Sensors and Analytical Systems
ページ507-515
ページ数9
エディション11
DOI
出版物ステータスPublished - 2008 12 1
イベントChemical Sensors 8: Chemical (Gas, Ion, Bio) Sensors and Analytical Systems - 214th ECS Meeting - Honolulu, HI, United States
継続期間: 2008 10 122008 10 17

出版物シリーズ

名前ECS Transactions
番号11
16
ISSN(印刷物)1938-5862
ISSN(電子版)1938-6737

Conference

ConferenceChemical Sensors 8: Chemical (Gas, Ion, Bio) Sensors and Analytical Systems - 214th ECS Meeting
United States
Honolulu, HI
期間08/10/1208/10/17

    フィンガープリント

ASJC Scopus subject areas

  • Engineering(all)

これを引用

Wang, J., Sasano, J., & Osaka, T. (2008). Effect of surface morphology of a SiO2/Si reference electrode modified by ODMS on the responses to pH and ionic strength. : ECS Transactions - Chemical Sensors 8: Chemical (Gas, Ion, Bio) Sensors and Analytical Systems (11 版, pp. 507-515). (ECS Transactions; 巻数 16, 番号 11). https://doi.org/10.1149/1.2981157