Concept

Hydrothermal synthesis

Related publications (29)

Crystallization of polylactide during impregnation with liquid CO2

The evolution of the morphology and degree of crystallinity was investigated postmortem in initially amorphous specimens of a commercial poly(dl-lactide) with a relatively low d-lactide content, after different immersion times in liquid CO2 at 10 A degrees ...

Springer Verlag2015

Rutile TiO2-based perovskite solar cells

Michael Graetzel

A perovskite solar cell based on rutile TiO2 film was prepared and its photovoltaic performance was compared to an anatase TiO2-based perovskite solar cell. Rutile TiO2 nanoparticles with aspect ratio of 0.2 (20 nm wide and 100 nm long) were prepared by hy ...

Royal Society of Chemistry2014

Expansion mechanisms in calcium aluminate and sulfoaluminate systems with calcium sulfate

Karen Scrivener, Christophe Gosselin, Julien Bizzozero

The long-term expansion of calcium aluminate cement and calcium sulfoaluminate cement in the presence of added gypsum has been studied for samples cured under water. Progressively higher amounts of gypsum were added to the CAC or CSA and it was found that ...

Elsevier2014

Hydration and dimensional stability of calcium aluminate cement based systems

Julien Bizzozero

Calcium aluminate cements (CAC) are often used in combination with calcium sulfate and Portland cement for special applications where rapid setting, rapid drying and shrinkage compensation are required. A growing fraction of the clinker, which has the high ...

EPFL2014

Synthesis, crystal growth and physical properties of the frustrated spin ladder material BiCu2PO6

Shuang Wang

In recent years quantum antiferromagnets with an intrinsically disordered (“spin liquid”) ground state and an energy gap in the spin excitation spectrum have received a great deal of attention. In search for new experimental realizations of spin-ladder and ...

EPFL2013

Mechanism of expansion of mortars immersed in sodium sulfate solutions

Karen Scrivener, Wei Sun, Cheng Yu

The mechanisms behind the expansion of samples immersed in solutions containing sulfate ions have been controversial. Expansion is believed to originate in the formation of ettringite, but it is not possible to find any direct correlation between these two ...

Pergamon-Elsevier Science Ltd2013

Mechanism of hydrothermal growth of ferroelectric PZT nanowires

Nava Setter, Silviu Cosmin Sandu, Jin Wang, Alexandre Durussel, Mtabazi Geofrey Sahini

The formation mechanism of hydrothermally grown monocrystalline ferroelectric PZT nanowires is investigated. It is shown that the growth proceeds via a two-step process. Particles of the centrosymmetric PX-phase grow initially, having a fibrous morphology ...

2012

Voltage enhancement in dye-sensitized solar cell using (001)-oriented anatase TiO2 nanosheets

Jacques-Edouard Moser, Paul Liska, Ladislav Kavan, Elham Ghadiri

A nanocrystalline TiO2 (anatase) nanosheet ex- posing mainly the (001) crystal faces was tested as photo- anode material in dye-sensitized solar cells. The nanosheets were prepared by hydrothermal growth in HF medium. Good-quality thin films were deposited ...

Springer2012

Investigation of Sulfate Attack by Experimental and Thermodynamic Means

Wolfgang Kunther

This work investigates sulfate attack in complex sulfate environments by exposing different binder types to various sulfate solutions and comparing predicted phase and volume changes with experimental data. The most important aspects of this work can be gr ...

EPFL2012

UV absorption of coherent and nano-porous titanium oxide films obtained by PECVD

Nasibeh Pouransari

Polymeric materials suffer from chain degradation due to the absorption of ultraviolet (UV) light. Nevertheless, many polymers show excellent optical transmission properties in the visible range and are suitable replacements for glass. Coating of polymers ...

2010

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