via DGIST
The research team of Professor Jong-Sung Yu’s has developed new photocatalyst synthesis method using Magnesium hydride (MgH2) and Titanium dioxide (TiO2)
A research team led by DGIST Professor Jong-Sung Yu’s team at the Department of Energy Science and Engineering has successfully developed a new catalyst synthesis method that can efficiently decompose water into oxygen and hydrogen using solar light. It is expected that this method will facilitate hydrogen mass production due to higher efficiency than the existing photocatalyst method.
Due to the intensifying environmental problems such as air pollution and global warming caused by the increased use of fossil energy, hydrogen is recently drawing attention as an ecofriendly energy source of next generation. Accordingly, research is being conducted globally on how to produce hydrogen using solar light and photocatalyst by decomposing water.
To overcome the limitations of photocatalyst that only reacts to light in ultraviolet rays, researchers have doped dual atom such as Nitrogen (N), Sulfur (S), and Phosphorus (P) on photocatalyst or synthesized new photocatalysts, developing a photocatalyst that reacts efficiently to visible light.
With Professor Samuel Mao’s team at UC Berkeley in the U.S., Professor Yu’s research team developed a new H-doped photocatalyst by removing oxygen from the photocatalyst surface made of titanium dioxide and filling hydrogen into it through the decomposition of MgH2.
Energy of long wavelength including visible light could not be used for the existing white Titanium dioxide because it has a wide band gap energy. However, the development of MgH2 reduction could overcome this through oxygen flaw induction and H-doping while enabling the use of solar light with 570nm-wavelength.
MgH2 reduction can synthesize new matters by applying to Titanium oxide used in this research as well as the oxides composed of other atoms such as Zr, Zn, and Fe. This method is applicable to various other fields such as photocatalyst and secondary battery. The photocatalyst synthesized in this research has four times higher photoactivity than the existing white titanium dioxide and is not difficult to manufacture, thus being very advantageous for hydrogen mass production.
Another characteristic of the photocatalyst developed by the research team is that it reduces band gap more than the existing Titanium dioxide photocatalyst used for hydrogen generation and can maintain four times higher activity with stability for over 70 days.
The new method can also react to visible light unlike existing photosynthesis, overcoming the limitation of hydrogen production. With the new photocatalyst development, the efficiency and stability of hydrogen production can both dramatically improved, which will help popularize hydrogen energy in the near future.
Professor Yu said “The photocatalyst developed this time is a synthesis method with much better performance than the existing photocatalyst method used to produce hydrogen. It is a very simple method that will greatly help commercialize hydrogen energy. With a follow-up research on improving the efficiency and economic feasibility of photocatalyst, we will take the lead in creating an environment stable hydrogen energy production that can replace fossil energy.”
Learn more: New Technique for Turning Sunshine and Water into Hydrogen Fuel
The Latest on: Hydrogen energy production
via Google News
The Latest on: Hydrogen energy production
- Editorial: Our jobs are bound up with the future of four hydrogen atoms and one carbonon April 11, 2021 at 5:59 am
Hydrogen, or fuels made from hydrogen, could do the job, as well as reduce emissions in steel production, a notoriously dirty process. Investors, academic and energy giants have all taken notice.
- Taste the energy rainbow: What’s with all the colors of hydrogen?on April 10, 2021 at 1:02 pm
Hydrogen that will someday power long-haul trucks is known by colors related to the power source used to make it.
- DoE pushing utilization of hydrogen energyon April 9, 2021 at 9:04 am
The Department of Energy (DoE) is furthering its push for hydrogen energy with the signing of another nonlegally binding accord with Tokyo-based Hydrogen Technology Inc. (HTI). The memorandum of ...
- Vision Hydrogen Provides VoltH2 Progress Reporton April 9, 2021 at 5:02 am
Sweco has extensive experience in all aspects of the green hydrogen supply chain, from renewable energy generation and electrolysis production through compression and transport to the end user and is ...
- Why Pennsylvania could be poised for a new wave of energy leadership with hydrogenon April 8, 2021 at 11:31 am
"This is the beginning of the next chapter for natural gas," predicted Perry Babb, CEO of KeyState Natural Gas Synthesis and CCS. "Blue hydrogen is the next chapter. This is not the end of natural gas ...
- Nuclear plants could be the ‘perfect component’ for green hydrogen productionon April 8, 2021 at 9:28 am
Clean energy technology company AES-100 is investigating whether hydrogen production could, under the right conditions, offer a solution for US and European nuclear reactors to retire early and help ...
- Aberdeen International (TSX:AAB, F:A8H) and AES-100 Inc. Identify Nuclear Plants as Additional Market Potential for Its Hydrogen Productionon April 7, 2021 at 11:00 pm
Aberdeen International Inc. (“Aberdeen” or the “Company”) (TSX: AAB F: A8H) is pleased to share an update regarding its recent acquisition, AES-100 Inc. (see press releases dated February 1, 2021, ...
- Hydrogen Build-out Creates Growing List of Energy Have-notson April 5, 2021 at 1:35 am
Not all countries have the luxury of including hydrogen in their energy development plans. Saudi Aramco, the world’s largest oil company, has been talking with China about collaboration in blue ...
- Orsted to link a huge offshore wind farm to 'renewable' hydrogen productionon March 31, 2021 at 11:47 pm
The last few years have seen a number of businesses take an interest in projects connected to "renewable" hydrogen. Described by the International Energy Agency as a "versatile energy carrier," ...
via Bing News