Controlled synthesis of ZnO nanorods and layered double hydroxide nanocomposites using a composition-modulated seed layer
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We report the structural evolution of ZnO nanorods (NRs) and ZnAl layered double hydroxide (LDH) hybrid nanostructuresfabricated by a simple hydrothermal method. The morphology of the hybrid nanostructures depended on the composition ofthe single seed layer of Al-alloyed ZnO (AZO) with different ratios of Al and Zn, which was grown by atomic layer depositionmethod. When the AZO seed layer was Al rich, the surface was mainly covered by the ZnAl-LDH structures. As the Al contentdecreased, the ZnO NRs dominated the hybrid nanostructures and pure ZnO NRs were finally formed when Zn-rich AZOor ZnO layers were used as a seed layer. A morphological evolution mechanism is suggested based on the different solubilityof the sacrificial AZO seed layers, which depends on the Al content because the isoelectric point is larger in the ZnO than inthe Al2O3.
Abstract
We report the structural evolution of ZnO nanorods (NRs) and ZnAl layered double hydroxide (LDH) hybrid nanostructuresfabricated by a simple hydrothermal method. The morphology of the hybrid nanostructures depended on the composition ofthe single seed layer of Al-alloyed ZnO (AZO) with different ratios of Al and Zn, which was grown by atomic layer depositionmethod. When the AZO seed layer was Al rich, the surface was mainly covered by the ZnAl-LDH structures. As the Al contentdecreased, the ZnO NRs dominated the hybrid nanostructures and pure ZnO NRs were finally formed when Zn-rich AZOor ZnO layers were used as a seed layer. A morphological evolution mechanism is suggested based on the different solubilityof the sacrificial AZO seed layers, which depends on the Al content because the isoelectric point is larger in the ZnO than inthe Al2O3.
참고문헌 (26)
- G.R. Bhimanapati, , ACS Nano, 9, pp.11509~11539 (2015)
- Z.L. Wang, , Nano Today, 5, pp.512~514 (2010)
- Y. Xia, , Adv. Mater, 15, pp.353~389 (2003)
- S. Xu, , Nano Res, 4, pp.1013~1099 (2011)
- Z.L. Wang, , Science, 312, pp.242~246 (2006)
- D.Y. Jung, , J. All. Comp, 641, pp.163~169 (2015)
- G.H. Nam, , Nanoscale, 6, pp.11653~11658 (2015)
- C. Soci, , Nano Lett, 7, pp.1003~1009 (2007)
- Jin Heui Koo, "Hydrothermal synthesis of shaped ZnO nanostructures", Journal of Ceramic Processing Research, 18(2), pp.156~160 (2017), 세라믹공정연구센터
- A.I. Khan, , Ind. Eng. Chem. Res, 48, pp.10196~10205 (2009)
- X. Zhao, , Chem. Mater, 22, pp.3933~3942 (2010)
- Q. Wang, , Chem. Rev, 112, pp.4124~4155 (2012)
- W. Bao, , Sci. Rep, 6, pp.26738~ (2016)
- M. Gong, , Energy Environ. Sci, 7, pp.2025~2032 (2014)
- X. Liu, , Nanoscale, 7, pp.17088~17095 (2015)
- S.H. Baek, , RSC Adv, 5, pp.59823~59829 (2015)
- J. Tauc, , Mater. Res. Bull, 3, pp.37~46 (1968)
- Q. Hou, , Nanoscale Res. Lett, 8, pp.144~ (2013)
- X. Guo, , Langmuir, 25, pp.9894~9897 (2009)
- G.H. Nam, , J. All. Comp, 613, pp.37~41 (2014)
- D. Li, , Appl. Phys. Lett, 85, pp.1601~1603 (2004)
- Z. Zhang, , Ind. Eng. Chem. Res, 52, pp.11045~11049 (2013)
- X. Yan, , Cryst. Growth Des, 8, pp.2406~2410 (2008)
- J. Liu, , J. Phys. Chem. B, 110, pp.21865~21872 (2006)
- J. Zhai, , Appl. Surf. Sci, 257, pp.393~397 (2010)
- C. Lei, , RSC Adv, 6, pp.10272~10279 (2016)