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Hybrid structure of zinc oxide nanorods and three dimensional graphene foam for supercapacitor and electrochemical sensor applications

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Hybrid structure of zinc oxide nanorods and three dimensional graphene foam for supercapacitor and electrochemical sensor applications
นักวิจัย : Dong, Xiaochen , Cao, Yunfa , Wang, Jing , Chan-Park, Mary B. , Wang, Lianhui , Huang, Wei , Chen, Peng
คำค้น : -
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2555
อ้างอิง : Dong, X., Cao, Y., Wang, J., Chan-Park, M. B., Wang, L., Huang, W., et al. (2012). Hybrid structure of zinc oxide nanorods and three dimensional graphene foam for supercapacitor and electrochemical sensor applications. RSC Advances, 2(10), 4364-4369. , 2046-2069 , http://hdl.handle.net/10220/10572 , http://dx.doi.org/10.1039/c2ra01295b
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : RSC advances
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

A hybrid structure of zinc oxide (ZnO) on three dimensional (3D) graphene foam has been synthesized by chemical vapor deposition (CVD) growth of graphene followed by a facial in situ precipitation of ZnO nanorods under hydrothermal conditions. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) are used to characterize the morphology and structure of graphene/ZnO hybrids. The results show that the ZnO nanorods have high crystallinity and cluster uniformly on graphene skeleton to form flower-like nanostructures. Serving as a free-standing electrode, the electrochemical and biosensing performance of graphene/ZnO hybrids are studied by cyclic voltammetry, electrochemical impedance spectroscopy, galvanostatic charge–discharge and amperometric measurements. It is found that the graphene/ZnO hybrids display superior capacitive performance with high specific capacitance (~400 F g−1) as well as excellent cycle life, making them suitable for high-performance energy storage applications. Furthermore, the graphene/ZnO hybrids exhibit high sensitivity for detection of [Fe(CN)6]3+ and dopamine, with the extrapolated lower detection limits of ~1.0 μM and ~10.0 nM respectively. These results demonstrate the potential of free-standing graphene/ZnO hybrid electrodes for the development of highly sensitive electrochemical sensors.

บรรณานุกรม :
Dong, Xiaochen , Cao, Yunfa , Wang, Jing , Chan-Park, Mary B. , Wang, Lianhui , Huang, Wei , Chen, Peng . (2555). Hybrid structure of zinc oxide nanorods and three dimensional graphene foam for supercapacitor and electrochemical sensor applications.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Dong, Xiaochen , Cao, Yunfa , Wang, Jing , Chan-Park, Mary B. , Wang, Lianhui , Huang, Wei , Chen, Peng . 2555. "Hybrid structure of zinc oxide nanorods and three dimensional graphene foam for supercapacitor and electrochemical sensor applications".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Dong, Xiaochen , Cao, Yunfa , Wang, Jing , Chan-Park, Mary B. , Wang, Lianhui , Huang, Wei , Chen, Peng . "Hybrid structure of zinc oxide nanorods and three dimensional graphene foam for supercapacitor and electrochemical sensor applications."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2555. Print.
Dong, Xiaochen , Cao, Yunfa , Wang, Jing , Chan-Park, Mary B. , Wang, Lianhui , Huang, Wei , Chen, Peng . Hybrid structure of zinc oxide nanorods and three dimensional graphene foam for supercapacitor and electrochemical sensor applications. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2555.