The nanoscale description of acid penetration to the gold colloids encapsulated in silica sol-gel matrix

被引：0

作者：

Yokoyama, Kazushige ^{[1
]}

Swana, Jeffrey R. ^{[1
]}

Gilbert, Tonya M. ^{[1
]}

Chen, Duo D. ^{[1
]}

Chen, Liwen ^{[1
]}

Kogan, Paul ^{[1
]}

机构：

[1] SUNY Coll Geneseo, Dept Chem, Geneseo, NY 14454 USA

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2009年 / 50卷 / 01期

基金：

美国国家科学基金会;

关键词：

Silica sol-gel; Gold colloids; Acid diffusion; Nano size dependence; POROUS-MEDIA; DIFFUSION; DNA; NANOPARTICLES; MOLECULES; CELLS; PROBE; WATER;

D O I：

10.1007/s10971-009-1904-7

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Various sizes of gold nano colloidal particles ranging from 5 nm to 100 nm of size were encapsulated in a silica based sol-gel, and these surfaces were exposed to a pH 1 acid solution. This enabled us to observe the process of solvent intrusion and interaction with gold colloids by the absorption spectrum as a function of time. The rate was analyzed by a single exponential analytical function, and the maximum rate was found for gold colloid of 15 nm size. The least acid interaction and colour change was observed for the size of 60 nm. It was speculated that the surface of these gold colloids were homogeneously covered by the sodium tetra-borate buffer which insulated silica gel layer, thus avoiding direct contact of the acid with the surface of the gold colloid. This study confirmed that the nano scale dopant size affects the rate of solvent penetration into a sol-gel cavity.

引用

页码：48 / 57

页数：10

共 50 条

[1] The nanoscale description of acid penetration to the gold colloids encapsulated in silica sol–gel matrix
Kazushige Yokoyama
Jeffrey R. Swana
Tonya M. Gilbert
Duo D. Chen
Liwen Chen
Paul Kogan
[J]. Journal of Sol-Gel Science and Technology, 2009, 50 : 48 - 57
[2] COLL 184-Nanoscale description of acid penetration to the gold colloids encapsulated in silica sol-gel matrix
Gilbert, Tonya Marie
[J]. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2008, 236
[3] Interactions of sol-gel encapsulated acyclovir with silica matrix
Akimsheva, E. Yu.
Dolinina, E. S.
Parfenyuk, E. V.
[J]. COLLOIDS AND SURFACES B-BIOINTERFACES, 2019, 178 : 103 - 110
[4] Structure and dynamics of lysozyme encapsulated in a silica sol-gel matrix
Pastor, Isabel
Ferrer, Maria L.
Lillo, M. Pilar
Gomez, Javier
Mateo, C. Reyes
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2007, 111 (39): : 11603 - 11610
[5] An oligo-phenylenevinylene derivative encapsulated in sol-gel silica matrix
Tang, J
Wang, C
Wang, Y
Sun, JZ
Yang, B
[J]. JOURNAL OF MATERIALS CHEMISTRY, 2001, 11 (05) : 1370 - 1373
[6] Nanoscale control of diffusion process in silica based sol-gel matrix
Yokoyama, Kazushige
[J]. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2013, 245
[7] Encapsulated alizarin red species: The role of the sol-gel route on the interaction with silica matrix
Capeletti, Larissa Brentano
Dos Santos, Joao Henrique Z.
Moncada, Edwin
Da Rocha, Zenis N.
Pepe, Iuri Muniz
[J]. POWDER TECHNOLOGY, 2013, 237 : 117 - 124
[8] Biocatalysis with Sol-Gel Encapsulated Acid Phosphatase
Kulkarni, Suhasini
Tran, Vu
Ho, Maggie K. -M.
Phan, Chieu
Chin, Elizabeth
Wemmer, Zeke
Sommerhalter, Monika
[J]. JOURNAL OF CHEMICAL EDUCATION, 2010, 87 (09) : 958 - 960
[9] A sol-gel matrix to preserve the viability of encapsulated bacteria
Nassif, N
Roux, C
Coradin, T
Rager, MN
Bouvet, OMM
Livage, J
[J]. JOURNAL OF MATERIALS CHEMISTRY, 2003, 13 (02) : 203 - 208
[10] Gold nanoparticles embedded in silica sol-gel matrix as an amperometric sensor for hydrogen peroxide
Maduralveeran, Govindhan
Ramaraj, Ramasamy
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2007, 608 (01) : 52 - 58

← 1 2 3 4 5 →