Airborne Preparation of Small Gold Nanoparticles Dispersed on Mesoporous Silica for the Catalytic Oxidation of Glycerol to Dihydroxyacetone
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F22%3A00128301" target="_blank" >RIV/00216224:14310/22:00128301 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1021/acsanm.2c04786" target="_blank" >https://doi.org/10.1021/acsanm.2c04786</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsanm.2c04786" target="_blank" >10.1021/acsanm.2c04786</a>
Alternative languages
Result language
angličtina
Original language name
Airborne Preparation of Small Gold Nanoparticles Dispersed on Mesoporous Silica for the Catalytic Oxidation of Glycerol to Dihydroxyacetone
Original language description
Supported gold nanoparticles play a fundamental role in modern material science and particularly in heterogeneous catalysis. Supported gold nanoparticles are known to be excellent catalysts, not only for the total oxidation of various pollutants (CO, VOCs) but also for the selective oxidation of bio-based platform molecules (such as glycerol) to added-value chemicals (dihydroxyacetone, glyceric acid, and glycolic acid). Controlling their fine dispersion however remains a challenge, especially when using silica supports. We report a simple one-pot aerosol route to mesoporous Au–SiO2 catalysts featuring small gold nanoparticles (∼3 nm). To achieve this, we rely on the strong interactions between the gold and thiol functions of a mercapto-silane: (3-mercaptopropyl)-trimethoxysilane (MPTMS). The addition of this gold stabilizer during synthesis enhances the stability of the gold precursor and is the key to controlling the formation of small gold nanoparticles. The dispersion of gold in the material reaches 21% (compared with 3% without the stabilizer). The selective oxidation of glycerol to dihydroxyacetone was employed as a test reaction, of importance in the context of sustainable chemistry. The highly dispersed catalyst obtained via gold stabilization outcompetes benchmark catalysts, reaching a glycerol conversion of 59% after 8 h (vs 5% without stabilization).
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10400 - Chemical sciences
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ACS Applied Nano Materials
ISSN
2574-0970
e-ISSN
2574-0970
Volume of the periodical
5
Issue of the periodical within the volume
12
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
18977-18985
UT code for WoS article
000890631800001
EID of the result in the Scopus database
2-s2.0-85142661466