환원 석출법을 이용한 모양과 크기가 제어된 금 입자의 제조
Fabrication of Size- and Shape- Controlled Gold Particles using Wet Chemical Process
1
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Shape and size controlled synthesis of gold particles has been studied by using wet-chemical method. When AuCl4- in aqueous HAuCl4 precursor was reduced using Na2SO3 as a reducing agent, mixtures of spherical, triangular and hexagonal particles were prepared in a few minutes. It was found that the shape selective oxidative etching by AuCl4- + C l-anions and crystal growth took place simultaneously. As the AuCl4- and Cl- concentration increased, yields of large triangular and hexagonal plate type particles increased, while the spherical particles decreased in most cases. Possible etching and growth mechanisms are discussed.
Abstract
Shape and size controlled synthesis of gold particles has been studied by using wet-chemical method. When AuCl4- in aqueous HAuCl4 precursor was reduced using Na2SO3 as a reducing agent, mixtures of spherical, triangular and hexagonal particles were prepared in a few minutes. It was found that the shape selective oxidative etching by AuCl4- + C l-anions and crystal growth took place simultaneously. As the AuCl4- and Cl- concentration increased, yields of large triangular and hexagonal plate type particles increased, while the spherical particles decreased in most cases. Possible etching and growth mechanisms are discussed.
참고문헌 (12)
- E. A. Kim, "Effects of Catalyst Accelerator on Electromagnetic Shielding in Nonelectrolytic Cu-plated Fabrics", J. Appl. Physics, 87, pp.4984~4986 (2000)
- Nanostructured Materials for the Biomedical, "BCC Research", Pharmaceutical and Cosmetic Markets, ~, pp.Market research report (2007)
- H. H. Richardson, "Thermooptical Properties of Gold Nanoparticles Embedded in Ice : Characterization of Heat Generation and Melting", Nano letters, 6, pp.783~788 (2006)
- X. Huang, "Cancer Cell Imaging and Photothermal Therapy in the Near-Infrared Region by Using Gold Nanorods", J. Am. Chem. Soc., 128, pp.2115~ (2006)
- A. Henglein, "Radiolytic Control of the Size of Colloidal Gold Nanoparticles", Langmuir, 14, pp.7392~7396 (1998)
- P. Mulvaney, "Surface Plasmon Spectroscopy of Nanosized Metal Particles", Langmuir, 12, pp.788~800 (1996)
- P. Mulvaney, "Electrochemistry of Multilayer Colloids: Preparation and Absorption Spectrum of Gold- Coated Silver Particles", J. Phys. Chem., 97, pp.7061~7064 (1993)
- Yugang Sun, "Shape-Controlled Synthesis of Gold and Silver Nanoparticles", Science, 298, pp.2176~2179 (2002)
- J. Chen, "Gold Nanocages: Engineering Their Sturcture for Biomedical Applications", Adv. Mater, 17, pp.2255~2261 (2005)
- A. Henglein, "Spectrophotometric Observations of the Adsorption of Organosulfur Compounds on Colloidal Silver Nanoparticles", J. Phys. Chem, 102, pp.8364~8366 (1998)
- 안정민, "나노 금 입자생성에 HAuCl4 용액의 농도와 UV 조사시간이 미치는 영향", 한국염색가공학회지, 21(6), pp.39~45 (2009), 한국염색가공학회
- A. Henglein, "Physicochemical Properties of Small Metal Particles in Solution:Microelectrode Reactions, Chemisorption, Composite Metal Particles, and the Atom-to-Metal Transition", J. Phys. Chem, 97, pp.5457~5471 (1993)