<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>Carbon films were synthesized under hydrothermal electrochemical conditions using sugar as the carbon source at temperature ranging from 170 °C to 180 °C. The reaction temperature affects the degree of sugar decomposition, the concentration of carbon ions, supersaturation and overpotential of the solution, thereby affecting the morphology, orientation, and crystallinity of the films. The graphitic content (sp2) increases with increasing the processing temperature and vice versa. The higher the synthesizing temperature the less the amount of amorphous carbon (sp3). The graphite in thin films prepared at 170 °C and 175 °C shows a (101) preferred orientation, whereas those prepared at 180 °C show a fairly random orientation. The mechanism of this synthesizing process seems to consist of three stages.</p></abstract>

Carbon films were synthesized under hydrothermal electrochemical conditions using sugar as the carbon source at temperature ranging from 170 °C to 180 °C. The reaction temperature affects the degree of sugar decomposition, the concentration of carbon ions, supersaturation and overpotential of the solution, thereby affecting the morphology, orientation, and crystallinity of the films. The graphitic content (sp2) increases with increasing the processing temperature and vice versa. The higher the synthesizing temperature the less the amount of amorphous carbon (sp3). The graphite in thin films prepared at 170 °C and 175 °C shows a (101) preferred orientation, whereas those prepared at 180 °C show a fairly random orientation. The mechanism of this synthesizing process seems to consist of three stages.

Effect of reaction temperature on carbon films prepared by a hydrothermal electrochemical method

School of Materials Science and Engineering, Central South University, Changsha, Hunan, 410083, China

School of Materials Science and Engineering, Hunan University, Changsha, Hunan, 410082, China

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Carbon films were synthesized under hydrothermal electrochemical conditions using sugar as the carbon source at temperature ranging from 170 °C to 180 °C. The...

Effect of reaction temperature on carbon films prepared by a hydrothermal electrochemical method

Publié en ligne: 16 juin 2012

Pages: 17 - 22

DOI: https://doi.org/10.2478/s13536-012-0001-8

Mots clés
carbon, thin film, supersaturation, overpotential, hydrothermal electrochemical method

© 2012 Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Effect of reaction temperature on carbon films prepared by a hydrothermal electrochemical method

Publié en ligne: 16 juin 2012

Pages: 17 - 22

DOI: https://doi.org/10.2478/s13536-012-0001-8

Mots cléscarbon, thin film, supersaturation, overpotential, hydrothermal electrochemical method

© 2012 Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
carbon, thin film, supersaturation, overpotential, hydrothermal electrochemical method