수열합성법에 의한 정렬된 ZnO 나노로드 구조의 합성

• Published in: Biuletyn Uniejowski Vol. 49; no. 5; pp. 472 - 476
• Main Authors: 구진희(Jin Heui Koo), 이병우(Byeong Woo Lee)
• Format: Journal Article
• Language: Korean
• Published: 한국표면공학회 2016
• Subjects: 기계공학; ZnO; Nanostructure; Crystallite morphology; MOD; Hydrothermal synthesis
• ISSN: 1225-8024; 2299-8403; 2288-8403
• DOI: 10.5695/JKISE.2016.49.5.472

The nano-array of the vertically aligned rod-like particles grown on ZnO coated glass-substrates was obtained via hydrothermal process. ZnO thin film coatings were prepared on the glass substrates using a MOD (metallorganic deposition) dip-coating method with zinc chloride dihydrate as starting material and 2-ethylhexanol as solvent. ZnO nanorods were synthesized on the seeded substrates by hydrothermal method at $80^{\circ}C$ using zinc-nitrate hexahydrate as a Zn source and sodium hydroxide as a mineralizer. Under the hydrothermal condition, the rod-like nanocrystals were easily attaching on the already ZnO seeded (coated) glass surface. It has been shown that the hydrothermal synthesis parameters are key factors in the nucleation and growth of ZnO crystallites. By controlling of hydrothermal parameters, the ZnO particulate morphology could be easily tailored. Rod-shaped ZnO arrays on the glass substrates consisted of elongated crystals having 6-fold symmetry were predominantly developed at high Zn precursor concentration in the pH range 7~11.