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Efficient reduction of graphene oxide film by low temperature heat treatment and its effect on electrical conductivity

  • Xuebing Hu , Yun Yu , Zheng Chen , Xiaozhen Zhang , Yongqing Wang and Jianer Zhou
Published/Copyright: December 28, 2017
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Abstract

Graphene-based conductive films have already attracted great attention due to their unique and outstanding physical properties. In this work, in order to develop a novel, effective method to produce these films with good electrical conductivity, a simple and green method is reported to rapidly and effectively reduce graphene oxide film using a low temperature heat treatment. The reduction of graphene oxide film is verified by XRD, FT-IR and Raman spectroscopy. Compared with graphene oxide film, the obtained reduced graphene oxide film has better electrical conductivity and its sheet resistance decreases from 25.3 kΩ × sq−1 to 3.3 kΩ × sq−1 after the heat treatment from 160 to 230 °C. The mechanism of thermal reduction of the graphene oxide film mainly results from the removal of the oxygen-containing functional groups and the structural changes. All these results indicate that the low temperature heat treatment is a suitable and effective method for the reduction of graphene oxide film.

Kurzfassung

Graphen-basierte leitfähige Schichten haben bereits große Aufmerksamkeit gewonnen, und zwar aufgrund ihrer einzigartigen und herausragenden physikalischen Eigenschaften. Um ein neues effektives Verfahren zu entwickeln, um solche Filme mit guter elektrischer Leitfähigkeit herzustellen, wird in diesem Beitrag über ein einfaches und umweltfreundliches Verfahren berichtet, um schnell und effektiv Graphenoxidschichten mittels einer Wärmebehandlung bei niedrigen Temperaturen zu reduzieren. Die Reduktion des Graphenoxidfilmes wurde mittels XRD, FT-IR und Raman-Spektroskopie verifiziert. Im Vergleich mit dem Graphenoxidfilm hat der reduzierte Graphenoxidfilm eine bessere elektrische Leitfähigkeit und seine Plattenresistenz nimmt von 25.3 kΩ×sq−1 auf 3.3 kΩ×sq−1 nach einer Wärmebehandlung von 160 bis 230 °C ab. Der Mechanismus der thermischen Reduktion von Graphenoxidfilmen ergibt sich hauptsächlich aus der Entfernung von sauerstoffhaltigen funktionellen Gruppen und Strukturänderungen. All diese Ergebnisse deuten darauf hin, dass die Wärmebehandlung bei niedrigen Temperaturen ein geeignetes und effektives Verfahren für die Reduktion von Graphenoxidfilmen darstellt.


*Correspondence Address, Associate Prof. Dr. Xuebing Hu, Key Laboratory of Inorganic Membrane, Jingdezhen Ceramic Institute, Jingdezhen 333001, P. R. China, E-mail:
** Prof. Dr. Yun Yu, Key Laboratory of Inorganic Coating Materials, Shanghai Institute of Ceramics, Shanghai 201800, P. R. China, E-mail:

Assoc. Prof. Dr. Xuebing Hu, born in 1979, completed his PhD at the Chinese Academy of Science (Shanghai) in 2014. Currently, he is working as Associate Professor of Materials Science in the Department of Materials Engineering of Jingdezhen Ceramic Institute, Jingdezhen, China. Current research interests include graphene oxide film, functional coating and membrane materials.

Prof. Dr. Yun Yu, born in 1967, completed her PhD at the Chinese Academy of Science, Shanghai, in 2000. Currently, she is working as Professor of Materials Science in Shanghai Institute of Ceramics, China. Current research interests include graphene materials and inorganic coating.

Zheng Chen, born in 1992, received her Bachelor's degree in the Department of Materials Engineering of Jingdezhen Ceramic Institute, Jingdezhen, China, in 2016. Currently, he is working as an assistant in the Key Laboratory of Inorganic Membrane of the Jingdezhen Ceramic Institute.

Assoc. Prof. Dr. Xiaozhen Zhang, born in 1978, completed his PhD at China University of Science and Technology, Hefei, in 2011. Currently, he is working as Associate Professor of Materials Science in the Department of Materials Engineering of Jingdezhen Ceramic Institute, China. Current research interests include ceramic materials and graphene film.

Prof. Dr. Yongqing Wang, born in 1966, completed his PhD at South China University of Technology, Guangzhou, in 2005. Currently, he is working as Professor of Materials Science in the Department of Materials Engineering of Jingdezhen Ceramic Institute, China. Current research interests include ceramic materials and materials process.

Prof. Dr. Jianer Zhou, born in 1952, completed his PhD at South China University of Technology, Guangzhou, in 2006. Currently, he is working as Professor of Materials Science in the Department of Materials Engineering of Jingdezhen Ceramic Institute, China. Current research interests include ceramic materials and graphene materials.


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Published Online: 2017-12-28
Published in Print: 2018-01-04

© 2018, Carl Hanser Verlag, München

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