In situ observation of sintering of nickel nanoparticles during nanocasting into mesoporous silica

AJ Grano; FM Sayler; Jan-Henrik Smått; MG Bakker

doi:10.1016/j.matlet.2013.08.080

In situ observation of sintering of nickel nanoparticles during nanocasting into mesoporous silica

AJ Grano, FM Sayler, Jan-Henrik Smått, MG Bakker

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

5 Citations (Scopus)

Abstract

Hierarchically porous metals are of interest in several application fields, including heterogeneous catalysis. Here, we report the nanocasting of nickel metal into hierarchically porous SBA-15 type monoliths containing ordered arrays of mesopores. Upon removal of the silica template, nickel replicas showed no evidence of an ordered mesopore structure. TEM images and XRD measurements of the nickel-silica composite show that nickel nanoparticles larger than the silica mesopores have formed. In situ heated stage TEM measurements indicate that sintering of nickel nanoparticles occurs, which leads to rapid disruption of the silica template in vacuum. This disruption appears to occur more rapidly in vacuum than under hydrogen atmosphere. (C) 2013 Elsevier B.V. All rights reserved.

Original language	Undefined/Unknown
Pages (from-to)	154–157
Number of pages	4
Journal	Materials Letters
Volume	111
DOIs	https://doi.org/10.1016/j.matlet.2013.08.080
Publication status	Published - 2013
MoE publication type	A1 Journal article-refereed

Keywords

nickel
Nanocasting
Monolith

Access to Document

10.1016/j.matlet.2013.08.080

Cite this

@article{796adb1cee8049f1b9a4d1e9bfa5802e,

title = "In situ observation of sintering of nickel nanoparticles during nanocasting into mesoporous silica",

abstract = "Hierarchically porous metals are of interest in several application fields, including heterogeneous catalysis. Here, we report the nanocasting of nickel metal into hierarchically porous SBA-15 type monoliths containing ordered arrays of mesopores. Upon removal of the silica template, nickel replicas showed no evidence of an ordered mesopore structure. TEM images and XRD measurements of the nickel-silica composite show that nickel nanoparticles larger than the silica mesopores have formed. In situ heated stage TEM measurements indicate that sintering of nickel nanoparticles occurs, which leads to rapid disruption of the silica template in vacuum. This disruption appears to occur more rapidly in vacuum than under hydrogen atmosphere. (C) 2013 Elsevier B.V. All rights reserved.",

keywords = "nickel, Nanocasting, Monolith, nickel, Nanocasting, Monolith, nickel, Nanocasting, Monolith",

author = "AJ Grano and FM Sayler and Jan-Henrik Sm{\aa}tt and MG Bakker",

year = "2013",

doi = "10.1016/j.matlet.2013.08.080",

language = "Odefinierat/ok{\"a}nt",

volume = "111",

pages = "154–157",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier",

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TY - JOUR

T1 - In situ observation of sintering of nickel nanoparticles during nanocasting into mesoporous silica

AU - Grano, AJ

AU - Sayler, FM

AU - Smått, Jan-Henrik

AU - Bakker, MG

PY - 2013

Y1 - 2013

N2 - Hierarchically porous metals are of interest in several application fields, including heterogeneous catalysis. Here, we report the nanocasting of nickel metal into hierarchically porous SBA-15 type monoliths containing ordered arrays of mesopores. Upon removal of the silica template, nickel replicas showed no evidence of an ordered mesopore structure. TEM images and XRD measurements of the nickel-silica composite show that nickel nanoparticles larger than the silica mesopores have formed. In situ heated stage TEM measurements indicate that sintering of nickel nanoparticles occurs, which leads to rapid disruption of the silica template in vacuum. This disruption appears to occur more rapidly in vacuum than under hydrogen atmosphere. (C) 2013 Elsevier B.V. All rights reserved.

AB - Hierarchically porous metals are of interest in several application fields, including heterogeneous catalysis. Here, we report the nanocasting of nickel metal into hierarchically porous SBA-15 type monoliths containing ordered arrays of mesopores. Upon removal of the silica template, nickel replicas showed no evidence of an ordered mesopore structure. TEM images and XRD measurements of the nickel-silica composite show that nickel nanoparticles larger than the silica mesopores have formed. In situ heated stage TEM measurements indicate that sintering of nickel nanoparticles occurs, which leads to rapid disruption of the silica template in vacuum. This disruption appears to occur more rapidly in vacuum than under hydrogen atmosphere. (C) 2013 Elsevier B.V. All rights reserved.

KW - nickel

KW - Nanocasting

KW - Monolith

KW - nickel

KW - Nanocasting

KW - Monolith

KW - nickel

KW - Nanocasting

KW - Monolith

U2 - 10.1016/j.matlet.2013.08.080

DO - 10.1016/j.matlet.2013.08.080

M3 - Artikel

SN - 0167-577X

VL - 111

SP - 154

EP - 157

JO - Materials Letters

JF - Materials Letters

ER -