High density gold nanoparticles within three-dimensionally mesoporous SBA-15: Adsorption behavior and optical properties

Xiaojuan Wang; Xiaoqing Yan; Renhong Li; Liping Xiao; Guicen Ma; Yihu Dai; Jie Fan

doi:10.1166/jnn.2015.10533

High density gold nanoparticles within three-dimensionally mesoporous SBA-15: Adsorption behavior and optical properties

Xiaojuan Wang, Xiaoqing Yan, Renhong Li, Liping Xiao, Guicen Ma, Yihu Dai, Jie Fan

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

1 Scopus citations

Abstract

Unprecedentedly high-density (up to 79 wt%) immobilization of monodispersed gold nanoparticles (AuNPs) within mesoporous silica SBA-15 is achieved by variation of their pore size and pore-pore connectivity to enable a full access of AuNPs to the large and high-affinity internal surface of mesoporous silica (MPS) SBA-15. In addition, according to the adsorption kinetics, dipole-induced dipole interaction is suggested to be the primary driving force for adsorption of AuNPs on silica. Interestingly, the high internal surface of MPS shows much higher affinity to AuNPs than the external surface. The optical properties of these densely immobilized AuNPs are also investigated, demonstrating that a plasma coupling exists between closely spaced AuNPs.

Original language	English
Pages (from-to)	7060-7067
Number of pages	8
Journal	Journal of Nanoscience and Nanotechnology
Volume	15
Issue number	9
DOIs	https://doi.org/10.1166/jnn.2015.10533
State	Published - 1 Sep 2015
Externally published	Yes

Keywords

Adsorption
Gold nanoparticles
High-density immobilization
Plasma coupling
SBA-15

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10.1166/jnn.2015.10533

Cite this

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title = "High density gold nanoparticles within three-dimensionally mesoporous SBA-15: Adsorption behavior and optical properties",

abstract = "Unprecedentedly high-density (up to 79 wt%) immobilization of monodispersed gold nanoparticles (AuNPs) within mesoporous silica SBA-15 is achieved by variation of their pore size and pore-pore connectivity to enable a full access of AuNPs to the large and high-affinity internal surface of mesoporous silica (MPS) SBA-15. In addition, according to the adsorption kinetics, dipole-induced dipole interaction is suggested to be the primary driving force for adsorption of AuNPs on silica. Interestingly, the high internal surface of MPS shows much higher affinity to AuNPs than the external surface. The optical properties of these densely immobilized AuNPs are also investigated, demonstrating that a plasma coupling exists between closely spaced AuNPs.",

keywords = "Adsorption, Gold nanoparticles, High-density immobilization, Plasma coupling, SBA-15",

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TY - JOUR

T1 - High density gold nanoparticles within three-dimensionally mesoporous SBA-15

T2 - Adsorption behavior and optical properties

AU - Wang, Xiaojuan

AU - Yan, Xiaoqing

AU - Li, Renhong

AU - Xiao, Liping

AU - Ma, Guicen

AU - Dai, Yihu

AU - Fan, Jie

PY - 2015/9/1

Y1 - 2015/9/1

N2 - Unprecedentedly high-density (up to 79 wt%) immobilization of monodispersed gold nanoparticles (AuNPs) within mesoporous silica SBA-15 is achieved by variation of their pore size and pore-pore connectivity to enable a full access of AuNPs to the large and high-affinity internal surface of mesoporous silica (MPS) SBA-15. In addition, according to the adsorption kinetics, dipole-induced dipole interaction is suggested to be the primary driving force for adsorption of AuNPs on silica. Interestingly, the high internal surface of MPS shows much higher affinity to AuNPs than the external surface. The optical properties of these densely immobilized AuNPs are also investigated, demonstrating that a plasma coupling exists between closely spaced AuNPs.

AB - Unprecedentedly high-density (up to 79 wt%) immobilization of monodispersed gold nanoparticles (AuNPs) within mesoporous silica SBA-15 is achieved by variation of their pore size and pore-pore connectivity to enable a full access of AuNPs to the large and high-affinity internal surface of mesoporous silica (MPS) SBA-15. In addition, according to the adsorption kinetics, dipole-induced dipole interaction is suggested to be the primary driving force for adsorption of AuNPs on silica. Interestingly, the high internal surface of MPS shows much higher affinity to AuNPs than the external surface. The optical properties of these densely immobilized AuNPs are also investigated, demonstrating that a plasma coupling exists between closely spaced AuNPs.

KW - Adsorption

KW - Gold nanoparticles

KW - High-density immobilization

KW - Plasma coupling

KW - SBA-15

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DO - 10.1166/jnn.2015.10533

M3 - 文章

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SN - 1533-4880

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SP - 7060

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JO - Journal of Nanoscience and Nanotechnology

JF - Journal of Nanoscience and Nanotechnology

IS - 9

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High density gold nanoparticles within three-dimensionally mesoporous SBA-15: Adsorption behavior and optical properties

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