Photonics Spectra: hydrogen production This is the syndication feed for Photonics Spectra: hydrogen production. https://www.photonics.com/Splash.aspx?Tag=hydrogen+production Thu, 28 Mar 2024 19:47:17 GMT Mon, 29 Mar 2021 07:00:00 GMT 1800 Light Delivers Hydrogen from Nonphotosynthetic Microorganisms
Many existing methods for the production of hydrogen are based on renewable energy, necessitating the continuous development of new and improved renewal options. Obstacles include high-cost materials and elements, as well as the...]]>
https://www.photonics.com/Articles/Light_Delivers_Hydrogen_from_Nonphotosynthetic/p5/a66846 A66846 Mon, 29 Mar 2021 07:00:00 GMT
CQDs Boost Photocatalytic Activity for Environmental, Energy Use
A novel approach to carbon quantum dot (CQD) use focuses on the research and design of CQD-modified photocatalysis, specifically on the introduction of CQDs into Bi2WO6 photocatalysts. When tested, the CQDs/Bi2WO6 photocatalyst demonstrated strong photocatalytic performance in pollutant degradation and hydrogen evolution.

CQDs have drawn interest as photocatalysts because they are nontoxic, benign, abundant and inexpensive. The study undertaken by researchers at Shanghai Institute of Technology and Nanjing University of Science and Technology investigated how the photo-absorption range could be broadened while increasing the charge separation efficiency of the CQD photocatalyst.

Researchers fabricated CQDs/Bi2WO6 nanocomposites...]]>
https://www.photonics.com/Articles/CQDs_Boost_Photocatalytic_Activity_for/p5/a62407 A62407 Thu, 24 Aug 2017 14:03:40 GMT
Technique Could Broaden Uses of Titanium Dioxide
A new method that controls the phase of titanium dioxide at room temperature could make the material more efficient in applications such as photovoltaic cells, smart sensors, optical communication technologies, hydrogen production and antimicrobial coatings.

Titanium dioxide is most commonly available in either an anatase or rutile phase. The arrangement of atoms dictates the material’s optical, chemical and electronic properties. As a result, each phase has different features. The anatase phase is suitable for applications such as hydrogen production and can be used as an antibacterial agent, while the rutile phase is ideal for applications including optical communication technologies, smart sensors and photovoltaic cells.
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https://www.photonics.com/Articles/Technique_Could_Broaden_Uses_of_Titanium_Dioxide/p5/a51286 A51286 Mon, 02 Jul 2012 00:00:00 GMT
Solar Smackdown: Photovoltaics vs. Photosynthesis
Because photosynthesis and photovoltaics harvest energy from the sun in distinctly different ways and produce different fuels, it is difficult to compare energy conversion efficiency.

"In order to make meaningful comparisons between photosynthesis (which provides stored chemical potential) and photovoltaic technology (which provides instantaneous electrical power), we considered photovoltaic driven water electrolysis to yield hydrogen using existing technology as an example of artificial photosynthesis," explained Thomas Moore, director of the Center for Bioenergy and Photosynthesis at Arizona State University and co-author of the study published in the journal Science.

"The hydrogen produced by the artificial system is...]]>
https://www.photonics.com/Articles/Solar_Smackdown_Photovoltaics_vs_Photosynthesis/p5/a47103 A47103 Mon, 16 May 2011 00:00:00 GMT