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Tailored synthesis of nanoparticle-based aerogel monoliths and their use in gas phase reactions

English title Tailored synthesis of nanoparticle-based aerogel monoliths and their use in gas phase reactions
Applicant Niederberger Markus
Number 165888
Funding scheme Project funding (Div. I-III)
Research institution Departement Materialwissenschaft ETH Zürich
Institution of higher education ETH Zurich - ETHZ
Main discipline Inorganic Chemistry
Start/End 01.04.2016 - 31.03.2019
Approved amount 444'016.00
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All Disciplines (2)

Discipline
Inorganic Chemistry
Material Sciences

Keywords (6)

CO2 Reduction; Porous materials; Gas phase reactions; Aerogels; Nanoparticles; Photocatalysis

Lay Summary (German)

Lead
Herstellung von Nanopartikel-basierten Aerogelen und deren Verwendung für Gasphasenreaktionen
Lay summary

Aerogele gehören zu den leichtesten Feststoffen überhaupt. Sie sind schwammartig aus Nanopartikeln aufgebaut und zeichnen sich durch hohe Porosität und extrem niedrige Dichten aus. Typischerweise werden Aerogele mit Hilfe der sogenannten Sol-Gel Chemie hergestellt, eine nasschemische und milde Methode, wo ein Ausgangsmolekül mit Hilfe von Wasser geliert und anschliessend überkritisch getrocknet wird. Die am Besten untersuchten Aerogele bestehen aus Silica (SiO2). Das grösste Problem bei diesen Aerogelen ist, dass sie amorph sind und dass es schwierig ist, komplexe Zusammensetzungen zu erhalten.

Im Gegensatz zu Aerogelen gibt es Nanopartikel unterschiedlichster Zusammensetzungen und mit hoher Kristallinität. Das Ziel des Projektes ist es nun, aus bestehenden Nanopartikeln Aerogele aufzubauen. Die Nanopartikel fungieren dabei als Bausteine, ähnlich zu Lego-Klötzchen, die sich durch kontrollierte Gelierung zu Zentimeter-grossen Aerogelen anordnen lassen. Die riesige Bandbreite an zur Verfügung stehenden Nanopartikeln erlauben dabei eine grosse Anzahl möglicher Kombinationen, so dass viele verschiedene Aerogele hergestellt werden können. Die hohen Oberflächen der porösen Aerogele eignen sich besonders als Photokatalysatoren für lichtgesteuerte Gasphasenreaktionen. Ein weiteres Ziel des Projektes ist es nun, diese Aerogele auf ihre photokatalytische Aktivität zu untersuchen, wobei die Reduktion von Kohlenstoffdioxid im Vordergrund steht.

Direct link to Lay Summary Last update: 25.03.2016

Responsible applicant and co-applicants

Employees

Publications

Publication
Photocatalytic Gas Phase Reactions
Schreck Murielle, Niederberger Markus (2019), Photocatalytic Gas Phase Reactions, in Chemistry of Materials, 31(3), 597-618.
Multiscale Nanoparticle Assembly: From Particulate Precise Manufacturing to Colloidal Processing
Niederberger Markus (2017), Multiscale Nanoparticle Assembly: From Particulate Precise Manufacturing to Colloidal Processing, in ADVANCED FUNCTIONAL MATERIALS, 27(47), 1703647.
Nonaqueous sol-gel synthesis of InTaO4 nanoparticles and their assembly into macroscopic aerogels
Rechberger Felix, Tervoort Elena, Niederberger Markus (2017), Nonaqueous sol-gel synthesis of InTaO4 nanoparticles and their assembly into macroscopic aerogels, in JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 100(10), 4483-4490.
Colloidal Nanocrystal-Based BaTiO3 Xerogels as Green Bodies: Effect of Drying and Sintering at Low Temperatures on Pore Structure and Microstructures.
Rechberger Felix, Mercandetti Cristina, Tervoort Elena, Niederberger Markus (2017), Colloidal Nanocrystal-Based BaTiO3 Xerogels as Green Bodies: Effect of Drying and Sintering at Low Temperatures on Pore Structure and Microstructures., in Langmuir, 33, 280-287.
Processing of Cr doped SrTiO 3 nanoparticles into high surface area aerogels and thin films
Rechberger Felix, Ilari Gabriele, Willa Christoph, Tervoort Elena, Niederberger Markus (2017), Processing of Cr doped SrTiO 3 nanoparticles into high surface area aerogels and thin films, in Materials Chemistry Frontiers, 1(8), 1662-1667.
Synthesis of aerogels: from molecular routes to 3-dimensional nanoparticle assembly
Rechberger Felix, Niederberger Markus (2017), Synthesis of aerogels: from molecular routes to 3-dimensional nanoparticle assembly, in Nanoscale Horizons, 2, 6-30.
Translucent nanoparticle-based aerogel monoliths as 3-dimensional photocatalysts for the selective photoreduction of CO2 to methanol in a continuous flow reactor
Rechberger Felix, Niederberger Markus (2017), Translucent nanoparticle-based aerogel monoliths as 3-dimensional photocatalysts for the selective photoreduction of CO2 to methanol in a continuous flow reactor, in Materials Horizons, 4(6), 1115-1121.
Assembly of ultrasmall Cu3N nanoparticles into three-dimensional porous monolithic aerogels
Deshmukh Rupali, Tervoort Elena, Kach Julian, Rechberger Felix, Niederberger Markus (2016), Assembly of ultrasmall Cu3N nanoparticles into three-dimensional porous monolithic aerogels, in DALTON TRANSACTIONS, 45(29), 11616-11619.
From 1D to 3D - macroscopic nanowire aerogel monoliths.
Cheng Wei, Rechberger Felix, Niederberger Markus (2016), From 1D to 3D - macroscopic nanowire aerogel monoliths., in Nanoscale, 8(29), 14074-7.
Strategies to improve the electrical conductivity of nanoparticlebased antimony-doped tin oxide aerogels
Rechberger Felix, Städler Roman, Tervoort Elena, Niederberger Markus (2016), Strategies to improve the electrical conductivity of nanoparticlebased antimony-doped tin oxide aerogels, in Journal of Sol-Gel Science and Technology, 60, 660-666.

Collaboration

Group / person Country
Types of collaboration
Prof. Christophe Colbeau-Justin/Université Paris-Sud 11 France (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
- Exchange of personnel

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
Faraday Discussion Artificial Photosynthesis Poster Photocatalytic Methanol Reforming in Monolithic Titania Nanoparticle-Based Aerogels 25.03.2019 Cambridge, Great Britain and Northern Ireland Schreck Murielle Laura; Niederberger Markus;
Single Nanostructures, Nanomaterials, Aerogels and their Interactions: Combining Quantum Physics and Chemistry Talk given at a conference Nanoparticle Assembly and Processing: Films, Foams and Aerogels 27.08.2018 Dresden, Germany Niederberger Markus;
EMRS Spring Meeting Poster Artificial Photosynthesis in Titania Nanoparticle-Based Aerogel Monoliths 18.06.2018 Strassburg, France Schreck Murielle Laura; Rechberger Felix; Niederberger Markus;
SBPMat Talk given at a conference Solution Processing of Inorganic Nanoparticles: Bridging Size Scales and Dimensionalities 10.09.2017 Gramado, Brazil Rechberger Felix; Niederberger Markus;
XXVI International Materials Research Congress Talk given at a conference Bridging Length Scales: From Nanoparticles to Materials 20.08.2017 Cancun, Mexico Niederberger Markus; Rechberger Felix;
NanoApp Talk given at a conference Nanoparticle Assembly: Bridging Size Scales and Dimensionalities 14.06.2017 Bled, Slovenia Niederberger Markus; Rechberger Felix;
ACS Spring Meeting Talk given at a conference Nanoparticle Assembly: Bridging Size Scales and Dimensionalities 02.04.2017 San Francisco, United States of America Niederberger Markus; Rechberger Felix;
The 2nd International Conference on NanoMaterials for Health, Energy and the Environment Talk given at a conference Bridging Length Scales: From Nanoparticles to Materials 11.09.2016 Flic-en-Flac, Mauritius Niederberger Markus; Rechberger Felix;
EMRS Spring Meeting Talk given at a conference Solution Processing of Nanoparticles into Multicomponent Films and Aerogels 02.05.2016 Lille, France Rechberger Felix; Niederberger Markus;


Communication with the public

Communication Title Media Place Year
Talks/events/exhibitions ETH at WEF 2019: Rethinking Design German-speaking Switzerland 2019
Talks/events/exhibitions thurgauwissenschaft German-speaking Switzerland 2017

Awards

Title Year
Nomination for the MaP Award 2018, a prize which honors the best interdisciplinary PhD thesis of ETH Zurich in the area of Materials and Processes 2018

Associated projects

Number Title Start Funding scheme
184842 Nanoparticle-based aerogels for photocatalytic gas phase reactions 01.04.2019 Project funding (Div. I-III)

Abstract

Aerogels with their low density and high surface area are fascinating materials with great application potential especially in catalysis and photocatalysis. However, their advantageous morphology is still far from being fully exploited due to their limited compositional variety and low crystallinity. In addition, the high mechanical fragility prevents their use in the form of monoliths.Replacing the classical sol-gel approach by a particle-based assembly route represents a powerful alternative to expand the accessible functionalities of aerogels. Starting from nanoscale building blocks and ending with centimeter sized bodies, such a bottom-up approach expands over seven orders of length scales and the use of metal oxide nanoparticles combines the inherent properties with the highly porous microstructure.Although a careful thermal treatment increases the mechanical stability of aerogel monoliths, they typically remain rather fragile, and it is not possible to use them in liquid media without destroying their monolithic shape. Therefore, we will design a reactor that makes it possible to directly investigate aerogel monoliths in various gas phase reactions, especially in the photocatalytic reduction of CO2.The goals of the project are thus twofold: i) Development of a reactor to test the aerogels in the monolithic form as photocatalysts in diverse gas phase reactions, and ii) systematic variation of the composition of these nanoparticle-based aerogels to optimize their photocatalytic performance with the focus on CO2 reduction.
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