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Synthesis of Silica-Coated AgI Nanoparticles and Immobilization of Proteins on Them

被引：12
|
作者：
Kobayashi, Yoshio [1 ]
Minato, Marie [1 ]
Ihara, Kazuaki [1 ]
Sato, Masahide [2 ]
Suzuki, Noboru [2 ]
Takeda, Motohiro [3 ]
Ohuchi, Noriaki [3 ]
Kasuya, Atsuo [4 ]
机构：
[1] Ibaraki Univ, Coll Engn, Ibaraki 3168511, Japan
[2] Utsunomiya Univ, Fac Engn, Utsunomiya, Tochigi 3218585, Japan
[3] Tohoku Univ, Grad Sch Med, Sendai, Miyagi 9808574, Japan
[4] Tohoku Univ, Interdisciplinary Res Ctr, Sendai, Miyagi 9808578, Japan
来源：
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2010年 / 10卷 / 11期
关键词：
AgI; Nanoparticle; Core-Shell; Silica-Coating; Sol-Gel; Protein Immobilization;
D O I：
10.1166/jnn.2010.2838
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
This paper describes a method for preparing silica-coated silver iodide (AgI/SiO(2)) particles and immobilizing proteins on the AgI/SiO(2) particles. Colloid solution of AgI particles was prepared by mixing AgClO(4) aqueous solution and KI aqueous solution. Silica-coating of the AgI particles was performed by adding 3-mercaptopropyltrimethoxysilane, tetraethylorthosilicate/ethanol solution and NaOH aqueous solution successively to the AgI colloid solution. TEM observation revealed that the AgI nanoparticles were coated with uniform silica shell. The AgI/SiO(2) particles were surface-modified with 3-aminopropyltrimethoxysilane and succinic anhydride. It was confirmed by XPS measurement that amino group or carboxyl group was introduced onto the AgI/SiO(2) particles. Protein-immobilization was performed in aqueous solution with bovine serum albumin (BSA) in the presence of the surface-modified AgI/SiO(2) particles. UV-VIS absorption spectroscopy revealed that the BSA was adsorbed on the surface-modified particles.
引用
收藏
页码：7758 / 7761
页数：4
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