Abstract
Supported metal alloy nanoparticles demonstrate high potential in designing heterogeneous catalysts for organic syntheses, pollution control and fuel cells. However, requirements of high temperature and multistep processes remain standing problems in traditional synthetic strategies. We herein present a low-temperature, single-step, liquid-phase methodology for designing monolith-supported metal alloy nanoparticles with high physicochemical stability and accessibility. Metal ions in aqueous solutions are reduced to form their corresponding metal alloy nanoparticles within hierarchically porous hydrogen silsesquioxane (HSQ, HSiO1.5) monoliths bearing well-defined macro- and mesopores and exhibiting high surface redox activity due to the presence of abundant Si-H groups. Supported bi-, tri- and tetrametallic nanoparticles have been synthesized with controlled compositions and loadings, and characterized in detail by microscopy and spectroscopy techniques. Examination of these supported metal alloy nanoparticles in catalytic reduction of 4-nitrophenol shows high catalytic activities depending on their compositions. Their recyclability and potential application in continuous flow reactors are also demonstrated. This journal is
| Original language | English |
|---|---|
| Pages (from-to) | 12535-12544 |
| Number of pages | 10 |
| Journal | Journal of Materials Chemistry A |
| Volume | 2 |
| Issue number | 31 |
| DOIs | |
| Publication status | Published - Aug 21 2014 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Renewable Energy, Sustainability and the Environment
- Materials Science(all)
Cite this
Reduction on reactive pore surfaces as a versatile approach to synthesize monolith-supported metal alloy nanoparticles and their catalytic applications. / Moitra, Nirmalya; Kanamori, Kazuyoshi; Ikuhara, Yumi H.; Gao, Xiang; Zhu, Yang; Hasegawa, George; Takeda, Kazuyuki; Shimada, Toyoshi; Nakanishi, Kazuki.
In: Journal of Materials Chemistry A, Vol. 2, No. 31, 21.08.2014, p. 12535-12544.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Reduction on reactive pore surfaces as a versatile approach to synthesize monolith-supported metal alloy nanoparticles and their catalytic applications
AU - Moitra, Nirmalya
AU - Kanamori, Kazuyoshi
AU - Ikuhara, Yumi H.
AU - Gao, Xiang
AU - Zhu, Yang
AU - Hasegawa, George
AU - Takeda, Kazuyuki
AU - Shimada, Toyoshi
AU - Nakanishi, Kazuki
PY - 2014/8/21
Y1 - 2014/8/21
N2 - Supported metal alloy nanoparticles demonstrate high potential in designing heterogeneous catalysts for organic syntheses, pollution control and fuel cells. However, requirements of high temperature and multistep processes remain standing problems in traditional synthetic strategies. We herein present a low-temperature, single-step, liquid-phase methodology for designing monolith-supported metal alloy nanoparticles with high physicochemical stability and accessibility. Metal ions in aqueous solutions are reduced to form their corresponding metal alloy nanoparticles within hierarchically porous hydrogen silsesquioxane (HSQ, HSiO1.5) monoliths bearing well-defined macro- and mesopores and exhibiting high surface redox activity due to the presence of abundant Si-H groups. Supported bi-, tri- and tetrametallic nanoparticles have been synthesized with controlled compositions and loadings, and characterized in detail by microscopy and spectroscopy techniques. Examination of these supported metal alloy nanoparticles in catalytic reduction of 4-nitrophenol shows high catalytic activities depending on their compositions. Their recyclability and potential application in continuous flow reactors are also demonstrated. This journal is
AB - Supported metal alloy nanoparticles demonstrate high potential in designing heterogeneous catalysts for organic syntheses, pollution control and fuel cells. However, requirements of high temperature and multistep processes remain standing problems in traditional synthetic strategies. We herein present a low-temperature, single-step, liquid-phase methodology for designing monolith-supported metal alloy nanoparticles with high physicochemical stability and accessibility. Metal ions in aqueous solutions are reduced to form their corresponding metal alloy nanoparticles within hierarchically porous hydrogen silsesquioxane (HSQ, HSiO1.5) monoliths bearing well-defined macro- and mesopores and exhibiting high surface redox activity due to the presence of abundant Si-H groups. Supported bi-, tri- and tetrametallic nanoparticles have been synthesized with controlled compositions and loadings, and characterized in detail by microscopy and spectroscopy techniques. Examination of these supported metal alloy nanoparticles in catalytic reduction of 4-nitrophenol shows high catalytic activities depending on their compositions. Their recyclability and potential application in continuous flow reactors are also demonstrated. This journal is
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UR - http://www.scopus.com/inward/citedby.url?scp=84904431192&partnerID=8YFLogxK
U2 - 10.1039/c4ta01767f
DO - 10.1039/c4ta01767f
M3 - Article
AN - SCOPUS:84904431192
VL - 2
SP - 12535
EP - 12544
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
SN - 2050-7488
IS - 31
ER -