Electrosurface properties of single-crystalline detonation nanodiamond particles obtained by air annealing of their agglomerates

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• 作者：A. V. Shvidchenko ; A. N. Zhukov ; A. T. Dideikin ; M. V. Baidakova…
• 刊名：Colloid Journal
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：78
• 期：2
• 页码：235-241
• 全文大小：441 KB
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• 作者单位：A. V. Shvidchenko (1)
  A. N. Zhukov (2)
  A. T. Dideikin (1)
  M. V. Baidakova (1)
  M. S. Shestakov (1)
  V. V. Shnitov (1)
  A. Ya. Vul’ (1)
  
  1. Ioffe Physical Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021, Russia
  2. St. Petersburg State University, Universitetskaya nab. 7/9, St. Petersburg, 199034, Russia
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Polymer Sciences
  Surfaces and Interfaces and Thin Films
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1608-3067

文摘

A complex study of electrosurface properties has been performed for single-crystalline detonation nanodiamond particles with sizes of 4–5 nm obtained by air annealing of their agglomerates. FTIR spectroscopy and X-ray photoelectron spectroscopy data indicate that the investigated properties result from the presence of two types of ionogenic functional groups on the particle surface, i.e., acidic carboxyl and amphoteric hydroxyl groups. Acid-base potentiometric titration, laser Doppler electrophoresis, and conductometry have been employed to measure the Γ _H + (pH) and Γ _OH - (pH) adsorption isotherms of potential-determining ions, as well as the pH dependences (in a pH range of 3.5–10.5) of the surface charge density, electrophoretic mobility, and specific surface conductivity of detonation nanodiamond particles in aqueous 0.0001–0.01 M KCl solutions.