Palladium infiltration in high surface area microporous silica nanoparticles

Jun Wang; Jennifer A. Nelson; William B. White; Peter C. Eklund; James H. Adair

doi:10.1016/j.matlet.2006.03.062

Palladium infiltration in high surface area microporous silica nanoparticles

Jun Wang, Jennifer A. Nelson, William B. White, Peter C. Eklund, James H. Adair

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4 Scopus citations

Abstract

Metallic Pd clusters were embedded into a host matrix of microporous SiO₂ nanoparticles via a solution reduction of Pd(NO₃)₂ by hydrazine hydrate. The infiltration of 33 wt.% Pd leads to a 13% porosity loss of SiO₂ nanoparticles, which demonstrated an initial surface area of 748 m²/g. The presence of Pd in the pores was demonstrated by EDS spectroscopy and by X-ray diffraction. The metallic guest species presumably reside in the accessible micropores with an estimated size about 1.3 nm. Hydrogen uptake was measured for Pd-infiltrated SiO₂ nanoparticles. A possible mechanism for the formation of composite nanoparticles is proposed based on electrostatic interaction between Pd²⁺ and SiO₂ nanoparticles.

Original language	English (US)
Pages (from-to)	3573-3576
Number of pages	4
Journal	Materials Letters
Volume	60
Issue number	29-30
DOIs	https://doi.org/10.1016/j.matlet.2006.03.062
State	Published - Dec 2006

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.matlet.2006.03.062

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@article{a3cc2939149e4b0cb68e9b7e5f83a65c,

title = "Palladium infiltration in high surface area microporous silica nanoparticles",

abstract = "Metallic Pd clusters were embedded into a host matrix of microporous SiO2 nanoparticles via a solution reduction of Pd(NO3)2 by hydrazine hydrate. The infiltration of 33 wt.% Pd leads to a 13% porosity loss of SiO2 nanoparticles, which demonstrated an initial surface area of 748 m2/g. The presence of Pd in the pores was demonstrated by EDS spectroscopy and by X-ray diffraction. The metallic guest species presumably reside in the accessible micropores with an estimated size about 1.3 nm. Hydrogen uptake was measured for Pd-infiltrated SiO2 nanoparticles. A possible mechanism for the formation of composite nanoparticles is proposed based on electrostatic interaction between Pd2+ and SiO2 nanoparticles.",

author = "Jun Wang and Nelson, {Jennifer A.} and White, {William B.} and Eklund, {Peter C.} and Adair, {James H.}",

note = "Funding Information: The authors thank Dr. Jeffery Kenvin at Micromeritics for the assistance of micropore size analysis. Financial support for this research through The NSF Particulate Materials Center at The Pennsylvania State University is gratefully acknowledged. ",

year = "2006",

month = dec,

doi = "10.1016/j.matlet.2006.03.062",

language = "English (US)",

volume = "60",

pages = "3573--3576",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier",

number = "29-30",

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TY - JOUR

T1 - Palladium infiltration in high surface area microporous silica nanoparticles

AU - Wang, Jun

AU - Nelson, Jennifer A.

AU - White, William B.

AU - Eklund, Peter C.

AU - Adair, James H.

N1 - Funding Information: The authors thank Dr. Jeffery Kenvin at Micromeritics for the assistance of micropore size analysis. Financial support for this research through The NSF Particulate Materials Center at The Pennsylvania State University is gratefully acknowledged.

PY - 2006/12

Y1 - 2006/12

N2 - Metallic Pd clusters were embedded into a host matrix of microporous SiO2 nanoparticles via a solution reduction of Pd(NO3)2 by hydrazine hydrate. The infiltration of 33 wt.% Pd leads to a 13% porosity loss of SiO2 nanoparticles, which demonstrated an initial surface area of 748 m2/g. The presence of Pd in the pores was demonstrated by EDS spectroscopy and by X-ray diffraction. The metallic guest species presumably reside in the accessible micropores with an estimated size about 1.3 nm. Hydrogen uptake was measured for Pd-infiltrated SiO2 nanoparticles. A possible mechanism for the formation of composite nanoparticles is proposed based on electrostatic interaction between Pd2+ and SiO2 nanoparticles.

AB - Metallic Pd clusters were embedded into a host matrix of microporous SiO2 nanoparticles via a solution reduction of Pd(NO3)2 by hydrazine hydrate. The infiltration of 33 wt.% Pd leads to a 13% porosity loss of SiO2 nanoparticles, which demonstrated an initial surface area of 748 m2/g. The presence of Pd in the pores was demonstrated by EDS spectroscopy and by X-ray diffraction. The metallic guest species presumably reside in the accessible micropores with an estimated size about 1.3 nm. Hydrogen uptake was measured for Pd-infiltrated SiO2 nanoparticles. A possible mechanism for the formation of composite nanoparticles is proposed based on electrostatic interaction between Pd2+ and SiO2 nanoparticles.

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SN - 0167-577X

VL - 60

SP - 3573

EP - 3576

JO - Materials Letters

JF - Materials Letters

IS - 29-30

ER -

Palladium infiltration in high surface area microporous silica nanoparticles

Abstract

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