Control of size and physical properties of graphene oxide by changing the oxidation temperature
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서지정보
ㆍ발행기관 : 한국탄소학회
ㆍ수록지정보 : Carbon Letters / 13권 / 1호
ㆍ저자명 : Dongwoo Kang , Hyeon Suk Shin
ㆍ저자명 : Dongwoo Kang , Hyeon Suk Shin
목차
1. Introduction2. Experimental
3. Results and Discussion
4. Conclusions
Acknowledgments
References
한국어 초록
The size and the physical properties of graphene oxide sheets were controlled by changing theoxidation temperature of graphite. Graphite oxide (GO) samples were prepared at different oxidation temperatures of 20oC, 27oC and 35oC using a modified Hummers’ method. The carbonto-oxygen (C/O) ratio and the average size of the GO sheets varied according to the oxidation temperature: 1.26 and 12.4 μm at 20oC, 1.24 and 10.5 μm at 27oC, and 1.18 and 8.5 μm at 35oC.
This indicates that the C/O ratio and the average size of the graphene oxide sheets respectively increase as the oxidation temperature decreases. Moreover, it was observed that the surface charge and optical properties of the graphene oxide sheets could be tuned by changing the temperature.
This study demonstrates the tunability of the physical properties of graphene oxide sheets and
shows that the properties depend on the functional groups generated during the oxidation process.
영어 초록
The size and the physical properties of graphene oxide sheets were controlled by changing theoxidation temperature of graphite. Graphite oxide (GO) samples were prepared at different oxidation temperatures of 20oC, 27oC and 35oC using a modified Hummers’ method. The carbonto-oxygen (C/O) ratio and the average size of the GO sheets varied according to the oxidation temperature: 1.26 and 12.4 μm at 20oC, 1.24 and 10.5 μm at 27oC, and 1.18 and 8.5 μm at 35oC.This indicates that the C/O ratio and the average size of the graphene oxide sheets respectively increase as the oxidation temperature decreases. Moreover, it was observed that the surface charge and optical properties of the graphene oxide sheets could be tuned by changing the temperature.This study demonstrates the tunability of the physical properties of graphene oxide sheets andshows that the properties depend on the functional groups generated during the oxidation process.참고 자료
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