Sentences with word «photocatalytic»

Design of Photonic and Plasmonic Materials for Photocatalytic CO2 Reduction.

Design of Photonic and Plasmonic Materials for Photocatalytic CO2 Reduction E. A. Gaulding, I. D. Sharp, and F. M. Toma

The technology, described in a paper in the ACS journal Nano Letters, relies on a novel plasmonic photoelectrode architecture of light - activated gold nanoparticles that harvest sunlight to drive photocatalytic reactions by efficient, non-radiative plasmon... Read more →

Taken as a whole, there is little current evidence to suggest the widespread use of photocatalytic surfaces will reduce ambient concentrations of NO2.

In this form, they attract photogenerated electrons, allowing for an efficient charge separation and an enhanced photocatalytic activity for hydrogen generation from water.

First - principles study of electronic structure and photocatalytic properties of MnNiO3 as an alkaline oxygen - evolution photocatalyst.

«The research on this phenomenon is now proceeding because we are convinced that such nanoclusters lend themselves as catalysts, whether in fuel cells, in photocatalytic water splitting, or for other important reactions in chemical engineering,» explains Dr. Armin Hoell of HZB.

Investigation of plasmon - enhanced photocatalytic CO2 reduction using nanostructured heterogeneous Ag and Cu catalysts.

There are also other promising approaches to achieving the goal of using solar energy to make fuels, eg using photocatalytic materials, living organisms or thermo - chemical routes.

«The scanning tunneling microscopy technique correlates atomic - level details of the active surface environment with photocatalytic processes, which enables researchers to design catalysts to achieve desired chemical transformations,» said Henderson.

As contaminated pathogenic air is processed through a patented bio-conversion reactor bed, this green technology, integrated with Photocatalytic Oxidation (PCO), works in unison to destroy harmful airborne microbes and dismantle volatile organic compounds (VOC) while producing no by - products.

The moisture - absorbing photocatalytic paint can be applied to any surface such as building facades, introducing the novel capability of generating hydrogen fuel just about anywhere.

That is important not only for the design of dye - sensitised solar cells, but also in order to be able to develop systems of materials for photocatalytic generation of hydrogen for storing solar energy as hydrogen fuel.»

Laboratory testing has demonstrated that hardwood flooring with Pure Genius is currently the most effective indoor air - purifying photocatalytic process on the market (all product categories considered).

Bao said photocatalytic water - splitting experiments have been tried since the 1970s, but this was the first to use cobalt oxide and the first to use neutral water under visible light at a high energy conversion efficiency without co-catalysts or sacrificial chemicals.

One of the most promising, recently identified photocatalytic new materials is inexpensive graphitic carbon nitride.

According to Italcementi, an Italian maker of photocatalytic cement, the airborne pollution of a large city could be cut in half if pollution - reducing cement were to cover just 15 percent of urban surfaces.

Unlike regular photoinitiators, the novel hybrid nanoparticles developed by Prof. Banin and Prof. Magdassi present tunable properties, wide excitation window in the UV and visible range, high light sensitivity, and function by a unique photocatalytic mechanism that increases printing efficiency while reducing the amount of materials required to create the final product.

The ensuing ability to achieve a controlled trade - off between emissive and photocatalytic behavior of CDs depending on nitrogen atom positioning inside the aromatic domain is expected to bring substantial improvements on their efficiency for on - demand light emission or energy conversion applications.

In addition to showing excellent photocatalytic stability in electrolyte solutions with a pH as high as 13, these four phases appear to have important similarities in electronic structure, according to first - principles calculations.

The details photocatalytic performance, quantum yield, product selectivity of solar chemicals and theoretical study will be discussed on the presentation.

The synthesized carbon doped SnS2 photocatalyst shows selective photocatalytic CO2 reduction to acetaldehyde with moderately high photochemical quantum efficiency (QE - 0.7 %) under visible - light irradiation [3].

Chen, S. Y. & Wang, L. W. Thermodynamic Oxidation and Reduction Potentials of Photocatalytic Semiconductors in Aqueous Solution.

Zhu remarked that «For centuries people appreciated only the beautiful works of art, and long life of the colours, but little did they realize that these works of art are also, in modern language, photocatalytic air purifiers with nanostructured gold catalysts.»

I was surprised to see all of this because I had thought that the idea that titanium dioxide photocatalytic finishes actually did any good had been pretty much debunked, which was pretty embarrassing since TreeHugger was full of posts about its wonders, back when the pictures were small.

A team at the Max Planck Institute for Solid State Research, Germany, and collaborators at ETH Zurich and the University of Cambridge, have developed a system that enables time - delayed photocatalytic hydrogen generation — essentially, an artificial photosynthesis system that can operate in the dark.

(These two articles, here and here, mention possibilities for night capture of these non-CO2 GHGs and then their release and photocatalytic destruction during the day, which can improve the amount of GHG destruction.)

PICADA (Photocatalytic Innovative Coverings Applications for De-pollution Assessment) aims to find a solution to facade soiling and staining, a problem that has been exacerbated in recent decades by increasing atmospheric pollution.

Pure Genius employs patented photocatalytic technology — the result of advanced research in nanotechnology by a joint venture between the Swedish firm Välinge and the Danish firm Photocat AB.

Putting it onto light bulbs makes so much sense; it is a «photocatalytic reaction when exposed to the fluorescent light.

Carbon dots (CDs) are a versatile nanomaterial with attractive photoluminescent and photocatalytic properties.

Yet another study by scientists in France and China found that «photocatalytic paints release significant quantities of nanoparticles and volatile organic compounds (VOCs) over their lifetime.»

Daino, Trevor Grade: 8 Metrolina Regional Scholars Academy - Waxhaw, NC Project Title: Investigating Tantalate Catalysts for Photocatalytic Water Splitting

Plasmon - Enhanced Photocatalytic CO2 Reduction Using Colloidal Nanocrystals E. Creel, Y. Kim, E. Corson, F. Qiu, R. Kostecki, J. J. Urban, and D. McMloskey

In the past several years, many semiconductor photocatalysts have been developed for photocatalytic CO2 reduction to hydrocarbons [1,2].

Design of Photonic and Plasmonic Materials for Photocatalytic CO2 Reduction A. Gaulding, I. Sharp, and F. M. Toma

Within the photocatalytic chamber, the Ti02 catalyst is self - cleaning non-depleting thus never requiring replenishing or exchanging.

The only way to do it cheaply is with photovoltaics or a photocatalytic agent that is as cheap as paint.

Materials like titanium oxide, known as semiconductors with the wide band - gap, are traditionally used to convert sunlight to chemical energy for the photocatalytic reaction.

Instead, some scientists speculate that sunlight may transform the acid in wormwood into artemisinin, so they mimic that action in the lab, using a photocatalytic reaction to get the drug ready for anti-malarial action.

Zou's group started with an oxide of indium - tantalum, a material that had been shown to have some photocatalytic activity but was inefficient under visible light because its band gap isn't sufficient.

It was obtained from «melon,» an ordered carbon nitride polymer, which is currently heavily investigated for its photocatalytic and semiconducting properties.

There they will measure the photocatalytic activity for the oxygen evolution and hydrogen evolution reactions, as occur when light energy is successfully used to break water down into useable fuel.

Resume: Photocatalytic CO2 reduction to solar fuels by artificial photosynthesis is an attractive and effective research area to solve the energy crisis as well as anthropogenic greenhouse emission problems from CO2 emission.

Photocatalytic CO2 reduction to solar fuels by artificial photosynthesis is an attractive and effective research area to solve the energy crisis as well as anthropogenic greenhouse emission problems from CO2 emission.

Photocatalytic CO2 Reduction in Nanoporous Gold Photoelectrodes Alex Welch, Joseph Duchene, Giulia Tagliabue, Artur Davoyan, Wen - Hui Cheng, Harry Atwater

Researchers from BASF, Energie Baden - Württemberg AG (EnBW), Heidelberg University and Karlsruhe Institute of Technology (KIT) are seeking to develop a process for the photocatalytic conversion of CO2 into methanol for use in fuel cells or internal combustion engines.

Although it has a narrow - band gap, however, the indirect band gap and faster charge recombination remain major challenge in the photocatalytic application.