The innovation engine for new materials

Wet Chemical Processes for Nanoparticle Synthesis, Aerogels and Multifunctional Batteries

Seminar Group: 

Speaker: 

Prof. Dr. Markus Niederberger

Address: 

Laboratory for Multifunctional Materials,
Department of Materials, ETH Zürich

Date: 

Thursday, June 15, 2023 - 4:00pm

Location: 

MRL Room 2053

Host: 

Prof. Raphaële Clément

Wet chemical processes are at the heart of my laboratory's research activities. From the synthesis of inorganic nanoparticles and their self-assembly into three-dimensional structures to the production of batteries, they play a crucial role in whether a material or device ultimately fulfills its function.

In this talk, I will introduce the non-aqueous sol-gel synthesis of metal oxide nanoparticles and selected formation mechanisms that allow, at least to some extent, rational planning of the synthesis of a given nanomaterial. Nevertheless, unexpected reactions occasionally occur in such syntheses, which in our case lead to interesting materials suitable for corrosion protection and heating fabrics. Strategies are proposed to assemble the nanoparticles into three-dimensional porous networks that, after supercritical drying, result in aerogel monoliths with macroscopic sizes. Careful selection of the nanoscale building blocks allows subtle tuning of the compositional and morphological properties of the aerogels depending on the application. As an example, the use of metal-metal oxide composite aerogels in the photocatalytic reforming of methanol in the gas phase will be presented. The presentation concludes with selected examples of processing methods for making rechargeable batteries that are transparent, stretchable or degradable.

 

Also available via zoom (https://ucsb.zoom.us/j/86122035560)