Anchoring Ceria Nanoparticles on Reduced Graphene Oxide and Their Electronic Transport Properties

被引：131
作者：
Joung, Daeha [1 ,2 ]
Singh, Virendra [1 ,4 ]
Park, Sanghoon [2 ]
Schulte, Alfons [2 ]
Seal, Sudipta [1 ,3 ,4 ]
Khondaker, Saiful I. [1 ,2 ,5 ]
机构：
[1] Univ Cent Florida, Nanosci Technol Ctr, Orlando, FL 32816 USA
[2] Univ Cent Florida, Dept Phys, Orlando, FL USA
[3] Univ Cent Florida, Adv Mat Proc Anal Ctr, Orlando, FL 32816 USA
[4] Univ Cent Florida, Dept Mech Mat & Aerosp Engn, Orlando, FL 32816 USA
[5] Univ Cent Florida, Sch Elect Engn & Comp Sci, Orlando, FL 32816 USA
来源：
JOURNAL OF PHYSICAL CHEMISTRY C | 2011年 / 115卷 / 50期
关键词：
CARBON NANOTUBES; TRANSPARENT; GRAPHITE; VACANCY; FILMS; CATALYSTS;
D O I：
10.1021/jp206485v
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We report a simple scheme of anchoring crystalline ceria nanoparticles (CNPs) onto reduced graphene oxide (RGO) sheets. Two types of CNPs, consisting of predominantly either Ce3+ or Ce4+ valence states, were mixed with GO suspended in water, with simultaneous reduction using hydrazine to yield CNP/RGO composite. Structural and surface characterizations reveal a strong electrostatic interaction between the CNPs and the RGO. Electrical characterizations show that with increased oxygen vacancies from Ce4+ to Ce3+ states the predominantly ambipolar RGO transforms to n-type CNP/RGO composites due to the electrostatic interaction between the localized electrons in oxygen vacancy sites of CNPs and mobile holes in RGO.
引用
收藏
页码：24494 / 24500
页数：7
相关论文
共 62 条
[1]   Modeling of CeO2, Ce2O3, and CeO2-x in the LDA plus U formalism [J].
Andersson, D. A. ;
Simak, S. I. ;
Johansson, B. ;
Abrikosov, I. A. ;
Skorodumova, N. V. .
PHYSICAL REVIEW B, 2007, 75 (03)
[2]   A Facile One-step Method to Produce Graphene-CdS Quantum Dot Nanocomposites as Promising Optoelectronic Materials [J].
Cao, Aoneng ;
Liu, Zhen ;
Chu, Saisai ;
Wu, Minghong ;
Ye, Zhangmei ;
Cai, Zhengwei ;
Chang, Yanli ;
Wang, Shufeng ;
Gong, Qihuang ;
Liu, Yuanfang .
ADVANCED MATERIALS, 2010, 22 (01) :103-+
[3]   Rare earth nanoparticles prevent retinal degeneration induced by intracellular peroxides [J].
Chen, Junping ;
Patil, Swanand ;
Seal, Sudipta ;
McGinnis, James F. .
NATURE NANOTECHNOLOGY, 2006, 1 (02) :142-150
[4]   Oxygen Vacancy Dependent Magnetism of CeO2 Nanoparticles Prepared by Thermal Decomposition Method [J].
Chen, Shih-Yun ;
Lu, Yi-Hsing ;
Huang, Tzu-Wen ;
Yan, Der-Chung ;
Dong, Chung-Li .
JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114 (46) :19576-19581
[5]   Hydrogen Production by Reforming of Simulated Hot Coke Oven Gas over Nickel Catalysts Promoted with Lanthanum and Cerium in a Membrane Reactor [J].
Cheng, Hongwei ;
Lu, Xionggang ;
Zhang, Yuwen ;
Ding, Weizhong .
ENERGY & FUELS, 2009, 23 (5-6) :3119-3125
[6]   Compositional Dependence of Phase Separation and Photoluminescence in Er-Doped Alkaline Borosilicate Glasses [J].
Chiang, Chih-Chun ;
Shyu, Jiin-Jyh .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2009, 92 (11) :2590-2597
[7]   Reduced Graphene Oxide/Copper Phthalocyanine Composite and Its Optoelectrical Properties [J].
Chunder, Anindarupa ;
Pal, Tanusri ;
Khondaker, Saiful I. ;
Zhai, Lei .
JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114 (35) :15129-15135
[8]   Reduced Graphene Oxide/Poly(3-hexylthiophene) Supramolecular Composites [J].
Chunder, Anindarupa ;
Liu, Jianhua ;
Zhai, Lei .
MACROMOLECULAR RAPID COMMUNICATIONS, 2010, 31 (04) :380-384
[9]   Monitoring dopants by Raman scattering in an electrochemically top-gated graphene transistor [J].
Das, A. ;
Pisana, S. ;
Chakraborty, B. ;
Piscanec, S. ;
Saha, S. K. ;
Waghmare, U. V. ;
Novoselov, K. S. ;
Krishnamurthy, H. R. ;
Geim, A. K. ;
Ferrari, A. C. ;
Sood, A. K. .
NATURE NANOTECHNOLOGY, 2008, 3 (04) :210-215
[10]   Size dependency variation in lattice parameter and valency states in nanocrystalline cerium oxide [J].
Deshpande, S ;
Patil, S ;
Kuchibhatla, SVNT ;
Seal, S .
APPLIED PHYSICS LETTERS, 2005, 87 (13) :1-3
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