Single step hydrothermal approach for devising hierarchical Ag–ZnO heterostructures with significant enhancement in field emission performance
作者： Sambhaji S. Warule , Nilima S. Chaudhari , Ruchita T. Khare , Jalinder D. Ambekar , Bharat B. Kale
DOI: 10.1039/C3CE40792F
关键词: Heterojunction 、 Nanorod 、 Single step 、 Hydrothermal circulation 、 Field electron emission 、 Materials science 、 Electronic band structure 、 Current density 、 Field (physics) 、 Nanotechnology 、 General Materials Science 、 General chemistry 、 Condensed matter physics
摘要: Hierarchical Ag–ZnO heterostructures have been synthesized via a template free single step hydrothermal method. Structural and morphological studies reveal the formation of comprised Ag nanoparticles (∼20 nm) organized on tapered ZnO nanorods under prevailing experimental conditions. A plausible reaction growth mechanism has discussed. Furthermore, hierarchical creation with as relatively low work function material offers an effective approach to tailor its field emission properties. The remarkable turn-on ∼ 1 V μm−1, corresponding current density ∼10 μA cm−2, ∼400 cm−2 drawn at applied 2.24 μm−1. In addition, exhibit good stability pre-set value ∼1 4 over duration 3 h. enhancement characteristics resulting from decorating is discussed basis band structure modifications. ease synthesis route properties offer promising electron source for high applications.
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sci-hub.se 参考文章(27)
Jian Ming Lin, Hsia Yu Lin, Chung Liang Cheng, Yang Fang Chen, Giant enhancement of bandgap emission of ZnO nanorods by platinum nanoparticles Nanotechnology. ,vol. 17, pp. 4391- 4394 ,(2006) , 10.1088/0957-4484/17/17/017
Feng Xu, Ke Yu, Qiong Li, Ziqiang Zhu, Takafumi Yao, Two-dimensional growth and field emission properties of ZnO microtowers Journal of Physical Chemistry C. ,vol. 111, pp. 4099- 4104 ,(2007) , 10.1021/JP067362Z
Reenamole Georgekutty, Michael K. Seery, Suresh C. Pillai, A Highly Efficient Ag-ZnO Photocatalyst: Synthesis, Properties, and Mechanism Journal of Physical Chemistry C. ,vol. 112, pp. 13563- 13570 ,(2008) , 10.1021/JP802729A
L Liao, J C Li, D F Wang, C Liu, C S Liu, Q Fu, L X Fan, Field emission property improvement of ZnO nanowires coated with amorphous carbon and carbon nitride films Nanotechnology. ,vol. 16, pp. 985- 989 ,(2005) , 10.1088/0957-4484/16/6/061
Y. B. Li, Y. Bando, D. Golberg, ZnO nanoneedles with tip surface perturbations: Excellent field emitters Applied Physics Letters. ,vol. 84, pp. 3603- 3605 ,(2004) , 10.1063/1.1738174
Bin Liu, Hua Chun Zeng, Hydrothermal synthesis of ZnO nanorods in the diameter regime of 50 nm. Journal of the American Chemical Society. ,vol. 125, pp. 4430- 4431 ,(2003) , 10.1021/JA0299452
GZ Xing, XS Fang, Z Zhang, DD Wang, X Huang, J Guo, L Liao, Z Zheng, HR Xu, T Yu, ZX Shen, CHA Huan, Tze Chien Sum, Hua Zhang, T Wu, Ultrathin single-crystal ZnO nanobelts: Ag-catalyzed growth and field emission property. Nanotechnology. ,vol. 21, pp. 255701- ,(2010) , 10.1088/0957-4484/21/25/255701
Yuanhui Zheng, Lirong Zheng, Yingying Zhan, Xingyi Lin, Qi Zheng, Kemei Wei, Ag/ZnO heterostructure nanocrystals: synthesis, characterization, and photocatalysis. Inorganic Chemistry. ,vol. 46, pp. 6980- 6986 ,(2007) , 10.1021/IC700688F
Jinping Liu, Xintang Huang, Yuanyuan Li, Xiaoxu Ji, Zikun Li, Xiang He, Fenglou Sun, Vertically Aligned 1D ZnO Nanostructures on Bulk Alloy Substrates: Direct Solution Synthesis, Photoluminescence, and Field Emission Journal of Physical Chemistry C. ,vol. 111, pp. 4990- 4997 ,(2007) , 10.1021/JP067782O
Ling Zhang, Yong-Hua Dou, Hong-Chen Gu, Synthesis of Ag-Fe3O4 heterodimeric nanoparticles joint international conference on information sciences. ,vol. 297, pp. 660- 664 ,(2006) , 10.1016/J.JCIS.2005.11.009