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Metal-Organic and Oxide Nanostructures for Electrocatalyzing the Oxygen Half-Cell Reaction

Diana Hötger

Energy Storage in the chemical bonds of water, a process accessible through electrochemical conversion, is a simple approach to compensate supply fluctuation common to sustainable energy production such as wind and solar. However, the water cycle is limite ...

EPFL2018

Groundwater dynamics in subterranean estuaries of coastal unconfined aquifers: Controls on submarine groundwater discharge and chemical inputs to the ocean

David Andrew Barry, Clare Robinson

Sustainable coastal resource management requires sound understanding of interactions between coastal unconfined aquifers and the ocean as these interactions influence the flux of chemicals to the coastal ocean and the availability of fresh groundwater reso ...

2018

Kinetics of calcium sulfoaluminate with 1% iron oxide by isothermal and isoconversional methods

Xuerun Li, Yu Zhang

The influence of iron oxide (Fe2O3) on the formation and decomposition kinetics of calcium sulfoaluminate (C(4)A(3)$) formed from tricalcium aluminate and calcium sulfate was investigated by both isothermal and isoconversional methods. Rietveld quantitativ ...

Ice Publishing2017

Atomically Altered Hematite for Highly Efficient Perovskite Tandem Water-Splitting Devices

Michael Graetzel, Shaik Mohammed Zakeeruddin, Chenyi Yi, Nripan Mathews

Photoelectrochemical (PEC) cells are attractive for storing solar energy in chemical bonds through cleaving of water into oxygen and hydrogen. Although hematite (alpha-Fe2O3) is a promising photoanode material owing to its chemical stability, suitable band ...

Wiley-VCH Verlag Berlin2017

Geometric Integrators for Nonadiabatic Molecular Quantum Dynamics Induced by the Interaction with the Electromagnetic Field

Aurélien Kevin Fabrice Patoz

Understanding the elementary steps involved in a chemical reaction forms the cornerstone of physical chemistry research. One way to deepen this understanding is by studying chemical and physical processes using linear and nonlinear spectroscopic techniques ...

EPFL2017

Study of Hypochlorite Reduction Related to the Sodium Chlorate Process

Michael Markus Busch

Reduction of hypochlorite is the most important side reaction in the sodium chlorate reactor leading to high energy losses. Today chromate is added to the reactor solution to minimize the hypochlorite reduction but a replacement is necessary due to health ...

Springer2016

Piezoresistive Membrane Surface Stress Sensors for Characterization of Breath Samples of Head and Neck Cancer Patients

Terunobu Akiyama, Frédéric Loizeau, Pedro Romero, Christoph Gerber

For many diseases, where a particular organ is affected, chemical by-products can be found in the patient's exhaled breath. Breath analysis is often done using gas chromatography and mass spectrometry, but interpretation of results is difficult and time-co ...

Mdpi Ag2016

A novel strategy for reversible hydrogen storage in Ca(BH4)(2)

Andreas Züttel

We report that decomposition pathway of Ca(BH4)(2) can be efficiently controlled by reaction temperature. That is, it decomposes into CaB6 at a lower temperature range of 320 to 350 degrees C, but into amorphous boron at 400 to 450 degrees C. We identified ...

Royal Society of Chemistry2015

Low Temperature Chemical Vapor Deposition Using Atomic Layer Deposition Chemistry

Patrik Willi Hoffmann, Yury Kuzminykh, Michael Oliver Reinke

Chemical vapor deposition (CVD) techniques rely on high temperatures to activate the chemical decomposition of precursors on the substrate surface. Lower temperatures are applied in atomic layer deposition (ALD), where deliberate pyrolysis of the precursor ...

American Chemical Society2015

Application of Ionic Liquids in the Downstream Processing of Lignocellulosic Biomass

Paul Joseph Dyson, Zhaofu Fei, Ning Yan, Sviatlana Siankevich

Chemical transformations of lignocellulosic substrates to valuable platform chemicals are challenging as lignin and cellulose have high thermal and chemical stabilities. However, certain ionic liquids are able to dissolve and deconstruct biomass and, in th ...

Schweizerische Chemische Gesellschaft2015

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