نتایج جستجو برای: water splitting thermo

تعداد نتایج: 594230  

Journal: :Nature Reviews Methods Primers 2023

National Science Foundation EPSCoR Renewable Energy Project; NanoScale Corporation and M2 Corporation.

Titania nanotubes (TNT) prepared by anodization of Ti foils were used for water splitting in a standalone cell. The concentration polarization between the anode side (1M NaOH) and cathode side (0.5 M H2SO4) ensured that the water splitting reaction could take place with no external bias and separate H2 and O2 evolution could be achieved. The destructi...

Journal: :Dental materials : official publication of the Academy of Dental Materials 2005
Jan De Munck Kirsten Van Landuyt Eduardo Coutinho André Poitevin Marleen Peumans Paul Lambrechts Bart Van Meerbeek

UNLABELLED A widely used artificial aging methodology is thermo-cycling. The ISO TR 11450 standard (1994) recommends 500 cycles in water between 5 and 55 degrees C. Recent literature revealed that more cycles are needed to mimic long-term bonding effectiveness. Furthermore, the artificial aging effect induced by thermo-cycling is not clearly established. Two underlying mechanisms can be advance...

2005
P Stroppa Cea

Two processes to effect splitting of the water molecule by means of an external heat source are competing for adoption, for the long-term production of hydrogen: high-temperature electrolysis, and splitting the water molecule through a succession of chemical reactions: a thermochemical cycle. Both processes form part of a strategy of voluntary reduction of greenhouse-gas emissions, and of alter...

2015
DARFILAL Djamal SELADJI Chakib

In this paper a review of solar thermo-chemical reactors for hydrogen production from water is presented. Keywords— Thermochemical, Water, Solar, Hydrogen, Reactor

Journal: :Chemical reviews 2010
Michael G Walter Emily L Warren James R McKone Shannon W Boettcher Qixi Mi Elizabeth A Santori Nathan S Lewis

Energy harvested directly from sunlight offers a desirable approach toward fulfilling, with minimal environmental impact, the need for clean energy. Solar energy is a decentralized and inexhaustible natural resource, with the magnitude of the available solar power striking the earth’s surface at any one instant equal to 130 million 500 MW power plants.1 However, several important goals need to ...

Titania nanotubes (TNT) prepared by anodization of Ti foils were used for water splitting in a standalone cell. The concentration polarization between the anode side (1M NaOH) and cathode side (0.5 M H2SO4) ensured that the water splitting reaction could take place with no external bias and separate H2 and O2 evolution could be achieved. The destructi...

2017
Wei Wang Xiaomin Xu Wei Zhou Zongping Shao

The development of clean and renewable energy materials as alternatives to fossil fuels is foreseen as a potential solution to the crucial problems of environmental pollution and energy shortages. Hydrogen is an ideal energy material for the future, and water splitting using solar/electrical energy is one way to generate hydrogen. Metal-organic frameworks (MOFs) are a class of porous materials ...

Journal: :Optics letters 2011
Fenfei Liu Shoufeng Lan Mani Hossein-Zadeh

We propose a dynamic operational mode and the resulting dynamic line narrowing as a method for enhancing the resolution and the detection limit of high-quality (high-Q) resonant optical sensors. Using a silica microtoroid as an experimental platform, we demonstrate that dynamic line narrowing through the thermo-optic effect can significantly improve the detection limit in both resonant shift an...

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