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Nanoreactors to synthesize organic substances under visible light

A new type of photocatalysts -- nanostructures from titanium dioxide

11-Oct-2018

A RUDN chemist developed a new type of photocatalysts - nanostructures from titanium dioxide. Hollow nanocubes with ultra-thin walls act like nanoreactors and provide for 28 fold more effective organic reactions at room temperature under the influence of visible light. Traditional methods of ...

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More effective catalyst with light

Plasmonic effect allows catalyst to work at lower energy

08-Oct-2018

Rice University nanoscientists have demonstrated a new catalyst that can convert ammonia into hydrogen fuel at ambient pressure using only light energy, mainly due to a plasmonic effect that makes the catalyst more efficient. A study from Rice's Laboratory for Nanophotonics (LANP) describes the ...

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Plastic bags that cannot breathe

Optimized enzyme variant can degrade plastic under anaerobic conditions

05-Mar-2018

Many bio-plastic bags have no place in the garbage. They dissolve too slowly in oxygen-deficient environments like biogas plants and when incinerated they are a burden to the environment. A research project at the Austrian Centre of industrial Biotechnology (acib) hunts for enzymes, which ...

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Guanidinium stabilizes perovskite solar cells at 19 percent efficiency

11-Dec-2017

With the power-conversion efficiency of silicon solar cells plateauing around 25%, perovskites are now ideally placed to become the market's next generation of photovoltaics. In particular, organic-inorganic lead halide perovskites offer manufacturing versatility that can potentially translate ...

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Metal-ion catalysts and hydrogen peroxide could green up plastics production

07-Jun-2017

Researchers at the University of Illinois are contributing to the development of more environmentally friendly catalysts for the production of plastic and resin precursors that are often derived from fossil fuels. The key to their technique comes from recognizing the unique physical and chemical ...

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Newly identified microbial process could reduce toxic methylmercury levels

01-Jun-2017

A team led by the Department of Energy's Oak Ridge National Laboratory has identified a novel microbial process that can break down toxic methylmercury in the environment, a fundamental scientific discovery that could potentially reduce mercury toxicity levels and support health and risk ...

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Phosphine as a superconductor?

Sure, but the story may be complicated

05-Feb-2016

Phosphine is one of the newest materials to be named a superconductor, a material through which electricity can flow with zero resistance. In 2015, scientists reported that they had liquefied the chemical and squeezed it under high pressure in a diamond vice to achieve superconductivity. Now, a ...

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Decomposition of textile products in the ground

Laboratory tests help with evaluation of environmental compatibility

11-Feb-2013

Like all organic materials, textiles will decompose under the influence of water and microorganisms in the ground. Under comparable environmental conditions, it depends mainly on the raw materials used whether the decomposition process takes place over the course of months, years, decades or even ...

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A Bright Future for Silicon

Ordered nanocrystal arrays may provide a new platform to study and tailor the light-emitting properties of silicon

23-Nov-2012

US scientists at the University of Texas at Austin and Cornell University have fabricated the first ordered arrays of silicon nanocrystals reported to date. Brian A. Korgel and colleagues developed a new chemical method to generate tiny silicon crystals—or quantum dots—with precisely controlled ...

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Graphene: Singles and the few

11-Nov-2010

A timely review analyzing the correlation of synthesis methods and physical properties of single-layer and few-layered graphene flakes. A review of methods used for synthesizing both single and few-layer graphene and the resulting properties is presented by C.N.R. Rao and colleagues at the ...

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