Concept

Stöber process

Publications associées (56)

Slowing the Kinetics of Alumina Sol-Gel Chemistry for Controlled Catalyst Overcoating and Improved Catalyst Stability and Selectivity

Jeremy Luterbacher, Florent Emmanuel Héroguel, Yuan-Peng Du

Catalyst overcoating is an emerging approach to engineer surface functionalities on supported metal catalyst and improve catalyst selectivity and durability. Alumina deposition on high surface area material by sol–gel chemistry is traditionally difficult t ...

2018

Surface passivation and self-regulated shell growth in selective area-grown GaN-(Ale,Ga)N core-shell nanowires

Anna Fontcuberta i Morral, Luca Francaviglia

The large surface-to-volume ratio of GaN nanowires implicates sensitivity of the optical and electrical properties of the nanowires to their surroundings. The implementation of an (Al, Ga) N shell with a larger band gap around the GaN nanowire core is a pr ...

Royal Society of Chemistry2017

Bilayered polyurethane/dipole-dipole and H-bonding interaction reinforced hydrogels as thermo-responsive soft manipulators

Paul Joseph Dyson, Zhaofu Fei, Xunhui Wang, Zhangjun Huang, Haiyan Jia

Dipole-dipole and hydrogen-bonding interaction reinforced (DHIR) hydrogels that demonstrate both excellent thermo-responsive volume change and high mechanical strength have been developed. Their thermo-responsive volume change originates from the balance b ...

Royal Soc Chemistry2017

Programmable chiral nanocolloids

Hyeonho Jeong

Nanoparticles promise a variety of application in energy, medicine, and biology. However, most nanoparticlesâ material composition and shape cannot be tuned and so functions have thus far been limited. Moreover they are often also chemically unstable in ...

EPFL2017

Morphological Characterization of ALD and Doping Effects on Mesoporous SnO2 Aerogels by XPS and Quantitative SEM Image Analysis

Juan-Pablo Correa-Baena

Atomic layer deposition (ALD) is unsurpassed in its ability to create thin conformal coatings over very rough and/or porous materials. Yet although the coating thickness on flat surfaces can be measured by ellipsometry, characterization of these coatings o ...

Amer Chemical Soc2016

Spark discharge synthesis of semiconductor nanoparticles for thick-film metal oxide gas sensors

Thomas Maeder

Traditional methods of synthesis of metal-oxide gas sensing materials for semiconductor sensors are based on wet sol-gel processes. However, these processes lead to the formation of hydroxyl groups on the surface of oxide particles being responsible for th ...

Elsevier2016

3D ceramic printing of nuclear fuel - PSI-TM-46-16-04

Manuel Alexandre Pouchon, Marco Streit

In this document a novel nuclear fuel production method is suggested. It combines previously developed approaches and improvements of the internal gelation process, which was used over decades to produce sphere-pac fuel for minor actinide transmutation. An ...

Paul Scherrer Institute (PSI)2016

Preparation of Magnetic Tubular Nanoreactors for Highly Efficient Catalysis

Shuliang Yang, Li Peng, Jian Liu, Chang Liu, Fang Wei

We report an efficient and controllable route to prepare magnetic tubular nanoreactors composed of a mesoporous SiO2 shell with iron-noble metal nanoparticles inside. The key of this method is to design and fabricate Fe nanoparticles encapsulated in a meso ...

Wiley-V C H Verlag Gmbh2016

Rapid screening tests for supplementary cementitious materials: past and future

Karen Scrivener, Ruben Anton Snellings

Rapid screening tests for supplementary cementitious materials (SCMs) have been in use for over 150 years. Over the years a multitude of methods have been put forward to predict the strength development of SCMblended mortars and concrete. This paper summar ...

Springer2016

Innovative optical lactate biosensing through the design of nanostructured materials

Oswaldo Javier Pérez Anguiano

The scope of this thesis is the synthesis of nanostructured materials, their functionalization and use for optical lactate biosensing applications. Rapid detection of L-lactate is important in many applications in the clinical sector, in the food industry, ...

EPFL2015

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