Tailoring ZnO nanostructures by spray pyrolysis and thermal annealing

被引:31
作者
Tharsika, T. [1 ]
Haseeb, A. S. M. A. [1 ]
Akbar, S. A. [2 ]
Thanihaichelvan, M. [3 ]
机构
[1] Univ Malaya, Fac Engn, Dept Mech Engn, Kuala Lumpur 50603, Malaysia
[2] Ohio State Univ, Dept Mat Sci & Engn, Columbus, OH 43210 USA
[3] Univ Jaffna, Fac Sci, Dept Phys, Jaffna 40000, Sri Lanka
关键词
Nanorod; ZnO; Spray pyrolysis; Thermal annealing; Structural properties; MIXED THIN-FILMS; ZINC-OXIDE; PHOTOCATALYTIC PROPERTIES; HYDROTHERMAL SYNTHESIS; OPTICAL-PROPERTIES; NANOROD ARRAYS; GROWTH; PHOTOLUMINESCENCE; FABRICATION; NANOWIRES;
D O I
10.1016/j.ceramint.2014.12.062
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
We report a novel synthesis of ZnO nanorods with hexagonal pyramid-like heads by a simple and low cost technique of spray pyrolysis with the help of zinc acetate and tin (IV) chloride pentahydrate precursors. In the present study, the growth of ZnO nanorods is optimized by varying a number of sprays and annealing temperatures in the synthesis process. FESEM analysis reveals that ZnO nanorods are observed when the number of sprays exceeds 150 and film-like structure is observed below 150 sprays. Nanorods are formed when the molar ratio of zinc acetate to tin (IV) chloride pentahydrate in the solution mixture is 3:1. The optimum annealed temperature for the growth of nanorods is determined to be 350 degrees C. The length and diameter of the vertically aligned nanorods are in the range of 1-3 mu m and 80 nm, respectively. XRD diffraction patterns and HRTEM analysis confirm that the ZnO nanorods are single crystals with a preferred growth direction of [0 0 0 1]. The effect of various growth parameters including molar ratio of zinc acetate to tin (IV) chloride pentahydrate in the mixture, number of sprays and annealing temperatures on the growth of ZnO nanorods are systematically studied. A plausible growth mechanism for hexagonal pyramidal heads of ZnO nanorods is discussed. These ZnO nanorods with hexagonal pyramid tips have potential application in photovoltaic devices. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码:5205 / 5211
页数:7
相关论文
共 44 条
[1]   Graphene Nanomesh by ZnO Nanorod Photocatalysts [J].
Akhavan, Omid .
ACS NANO, 2010, 4 (07) :4174-4180
[2]   Highly sensitive hydrazine chemical sensor fabricated by modified electrode of vertically aligned zinc oxide nanorods [J].
Ameen, Sadia ;
Akhtar, M. Shaheer ;
Shin, Hyung Shik .
TALANTA, 2012, 100 :377-383
[3]   ZnO diode fabricated by excimer-laser doping [J].
Aoki, T ;
Hatanaka, Y ;
Look, DC .
APPLIED PHYSICS LETTERS, 2000, 76 (22) :3257-3258
[4]   Temperature-controlled synthesis and photocatalytic performance of ZnO nanoplatelets [J].
Barreca, Davide ;
Ferrucci, Angelo P. ;
Gasparotto, Alberto ;
Maccato, Chiara ;
Maragno, Cinzia ;
Tondello, Eugenio .
CHEMICAL VAPOR DEPOSITION, 2007, 13 (11) :618-625
[5]   Photoinduced superhydrophilicity and photocatalytic properties of ZnO nanoplatelets [J].
Barreca, Davide ;
Gasparotto, Alberto ;
Maccato, Chiara ;
Tondello, Eugenio ;
Stanger, Urska Lavrencic ;
Patil, Suhas R. .
SURFACE & COATINGS TECHNOLOGY, 2009, 203 (14) :2041-2045
[6]   Conventional Optics from Unconventional Electronics in ZnO Quantum Dots [J].
Baskoutas, Sotirios ;
Bester, Gabriel .
JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114 (20) :9301-9307
[7]  
Callahan MJ, 2010, SPRINGER HDB CRYSTAL, P655
[8]   Photoluminescence studies of spray pyrolytically grown nanostructured tin oxide semiconductor thin films on glass substrates [J].
Chacko, Saji ;
Bushiri, M. Junaid ;
Vaidyan, V. K. .
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2006, 39 (21) :4540-4543
[9]   Mechanical properties of ZnO nanowires [J].
Desai, A. V. ;
Haque, M. A. .
SENSORS AND ACTUATORS A-PHYSICAL, 2007, 134 (01) :169-176
[10]   Fabrication of ZnO nanorod arrays via electrospinning assisted hydrothermal method [J].
Dong, Xiaobin ;
Yang, Ping ;
Shi, Ruixia .
MATERIALS LETTERS, 2014, 135 :96-98