Efficient reduction of graphene oxide film by low temperature heat treatment and its effect on electrical conductivity
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Xuebing Hu
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.
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© 2018, Carl Hanser Verlag, München
Articles in the same Issue
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- Looking ahead after 60 successful years
- Fachbeiträge/Technical Contributions
- Deterioration mechanisms of materials – Influences on performance and reliability
- Corrosion fatigue assessment of extruded magnesium alloys AZ31 and ME20
- Low heat input welding of nickel superalloy GTD-111 with Inconel 625 filler metal
- Effect of Cr content on microstructure and mechanical properties of carbidic austempered ductile iron
- Optimization of welding parameters for DP600/TRIP800 dissimilar joints
- Microstructure and mechanical properties of friction welded AISI 1040/AISI 304L steels before and after electrochemical corrosion
- Fatigue behavior and mechanism of KMN in a very high cycle regime
- Gaussian filtering algorithm describing the topography of temper rolled strip and related edge effect
- Impression creep behavior of magnesium alloy ZK60
- Rauheitsanforderungen für die mobile Härteprüfung metallischer Werkstoffe
- Preparation and characterization of Kevlar/glass fiber laminates with a nanoclay enhanced epoxy matrix
- Effect of seawater on pin-loaded laminated composites
- Thermomechanical and acidic treatments to improve plasticization and properties of chitosan films: A comparative study of acid types and glycerol effects
- Efficient reduction of graphene oxide film by low temperature heat treatment and its effect on electrical conductivity
- Experimental evaluation of optimum process parameters for spinning of metals
Articles in the same Issue
- Inhalt/Contents
- Contents
- Vorwort/Editorial
- Looking ahead after 60 successful years
- Fachbeiträge/Technical Contributions
- Deterioration mechanisms of materials – Influences on performance and reliability
- Corrosion fatigue assessment of extruded magnesium alloys AZ31 and ME20
- Low heat input welding of nickel superalloy GTD-111 with Inconel 625 filler metal
- Effect of Cr content on microstructure and mechanical properties of carbidic austempered ductile iron
- Optimization of welding parameters for DP600/TRIP800 dissimilar joints
- Microstructure and mechanical properties of friction welded AISI 1040/AISI 304L steels before and after electrochemical corrosion
- Fatigue behavior and mechanism of KMN in a very high cycle regime
- Gaussian filtering algorithm describing the topography of temper rolled strip and related edge effect
- Impression creep behavior of magnesium alloy ZK60
- Rauheitsanforderungen für die mobile Härteprüfung metallischer Werkstoffe
- Preparation and characterization of Kevlar/glass fiber laminates with a nanoclay enhanced epoxy matrix
- Effect of seawater on pin-loaded laminated composites
- Thermomechanical and acidic treatments to improve plasticization and properties of chitosan films: A comparative study of acid types and glycerol effects
- Efficient reduction of graphene oxide film by low temperature heat treatment and its effect on electrical conductivity
- Experimental evaluation of optimum process parameters for spinning of metals