Surface modification of hydrothermally grown ZnO nanostructures with process parameters

J. P. Kar; S. N. Das; S. W. Lee; M. H. Ham; J. H. Choi; J. M. Myoung

doi:10.1080/00986440902897491

Surface modification of hydrothermally grown ZnO nanostructures with process parameters

J. P. Kar, S. N. Das, S. W. Lee, M. H. Ham, J. H. Choi, J. M. Myoung

Department of Physics and Chemistry

Yonsei University

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

ZnO nanorods (NRs) were hydrothermally synthesized by using equimolar zinc nitrate hydrate (Zn(NO₃)₂ · 6H₂O) and hexamethylenetetramine (C₆H₁₂N₄) solutions. The shape of the nanostructures, obtained by aqueous method, was greatly influenced by the growth temperature and the molar concentrations. NRs grown at higher temperature (90°C) have rounded tips, whereas nanostructures of hexagonal flat-end shape were obtained at 75°C. Hardly any nanostructures were observed by further reducing the temperature to 60°C. In addition, solutions with higher molarity favored the appearance of nanoflowers. Scattered ZnO NRs were observed on silicon substrate, whereas aligned ZnO nanowires (NWs) 50-70nm in diameter were obtained at 75°C by introducing sputtered ZnO film as a seed layer. Highresolution transmission electron microscopy (HRTEM) confirmed the growth of ZnO nanowires along [001] direction. A band-edge luminescence along with a broad visible spectrum was observed for the ZnO nanowires.

Original language	English
Pages (from-to)	1130-1138
Number of pages	9
Journal	Chemical Engineering Communications
Volume	196
Issue number	9
DOIs	https://doi.org/10.1080/00986440902897491
State	Published - Sep 2009

Bibliographical note

Funding Information:
This work was supported by the ‘‘System IC 2010’’ Project of Korea Ministry of Commerce, Industry and Energy, and the Second Stage of Brain Korea 21 Project in 2007.

Keywords

Hydrothermal
Morphology
Nanostructures
Seed layer
ZnO

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title = "Surface modification of hydrothermally grown ZnO nanostructures with process parameters",

abstract = "ZnO nanorods (NRs) were hydrothermally synthesized by using equimolar zinc nitrate hydrate (Zn(NO3)2 · 6H2O) and hexamethylenetetramine (C6H12N4) solutions. The shape of the nanostructures, obtained by aqueous method, was greatly influenced by the growth temperature and the molar concentrations. NRs grown at higher temperature (90°C) have rounded tips, whereas nanostructures of hexagonal flat-end shape were obtained at 75°C. Hardly any nanostructures were observed by further reducing the temperature to 60°C. In addition, solutions with higher molarity favored the appearance of nanoflowers. Scattered ZnO NRs were observed on silicon substrate, whereas aligned ZnO nanowires (NWs) 50-70nm in diameter were obtained at 75°C by introducing sputtered ZnO film as a seed layer. Highresolution transmission electron microscopy (HRTEM) confirmed the growth of ZnO nanowires along [001] direction. A band-edge luminescence along with a broad visible spectrum was observed for the ZnO nanowires.",

keywords = "Hydrothermal, Morphology, Nanostructures, Seed layer, ZnO",

author = "Kar, {J. P.} and Das, {S. N.} and Lee, {S. W.} and Ham, {M. H.} and Choi, {J. H.} and Myoung, {J. M.}",

note = "Funding Information: This work was supported by the {\textquoteleft}{\textquoteleft}System IC 2010{\textquoteright}{\textquoteright} Project of Korea Ministry of Commerce, Industry and Energy, and the Second Stage of Brain Korea 21 Project in 2007.",

year = "2009",

month = sep,

doi = "10.1080/00986440902897491",

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AU - Kar, J. P.

AU - Das, S. N.

AU - Lee, S. W.

AU - Ham, M. H.

AU - Choi, J. H.

AU - Myoung, J. M.

N1 - Funding Information: This work was supported by the ‘‘System IC 2010’’ Project of Korea Ministry of Commerce, Industry and Energy, and the Second Stage of Brain Korea 21 Project in 2007.

PY - 2009/9

Y1 - 2009/9

N2 - ZnO nanorods (NRs) were hydrothermally synthesized by using equimolar zinc nitrate hydrate (Zn(NO3)2 · 6H2O) and hexamethylenetetramine (C6H12N4) solutions. The shape of the nanostructures, obtained by aqueous method, was greatly influenced by the growth temperature and the molar concentrations. NRs grown at higher temperature (90°C) have rounded tips, whereas nanostructures of hexagonal flat-end shape were obtained at 75°C. Hardly any nanostructures were observed by further reducing the temperature to 60°C. In addition, solutions with higher molarity favored the appearance of nanoflowers. Scattered ZnO NRs were observed on silicon substrate, whereas aligned ZnO nanowires (NWs) 50-70nm in diameter were obtained at 75°C by introducing sputtered ZnO film as a seed layer. Highresolution transmission electron microscopy (HRTEM) confirmed the growth of ZnO nanowires along [001] direction. A band-edge luminescence along with a broad visible spectrum was observed for the ZnO nanowires.

AB - ZnO nanorods (NRs) were hydrothermally synthesized by using equimolar zinc nitrate hydrate (Zn(NO3)2 · 6H2O) and hexamethylenetetramine (C6H12N4) solutions. The shape of the nanostructures, obtained by aqueous method, was greatly influenced by the growth temperature and the molar concentrations. NRs grown at higher temperature (90°C) have rounded tips, whereas nanostructures of hexagonal flat-end shape were obtained at 75°C. Hardly any nanostructures were observed by further reducing the temperature to 60°C. In addition, solutions with higher molarity favored the appearance of nanoflowers. Scattered ZnO NRs were observed on silicon substrate, whereas aligned ZnO nanowires (NWs) 50-70nm in diameter were obtained at 75°C by introducing sputtered ZnO film as a seed layer. Highresolution transmission electron microscopy (HRTEM) confirmed the growth of ZnO nanowires along [001] direction. A band-edge luminescence along with a broad visible spectrum was observed for the ZnO nanowires.

KW - Hydrothermal

KW - Morphology

KW - Nanostructures

KW - Seed layer

KW - ZnO

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DO - 10.1080/00986440902897491

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EP - 1138

JO - Chemical Engineering Communications

JF - Chemical Engineering Communications

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ER -

Surface modification of hydrothermally grown ZnO nanostructures with process parameters

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