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.”
The Latest on: Hydrogen energy production
via Google News
The Latest on: Hydrogen energy production
- Hydrogen energy – how do I get a project approval?on August 16, 2019 at 2:22 pm
In this article we review the existing regulatory framework and key considerations for hydrogen energy production projects, and what major projects are currently underway or in the pipeline. Hydrogen ...
- Could renewable hydrogen shove natural gas into the coal-bin of history?on August 16, 2019 at 8:52 am
Renewable hydrogen is becoming viable as a large scale, long duration storage medium for excess renewable energy ... digressed into microbial methane production before finding its way to Electrochaea.
- Transportable, tradable ‘green’ hydrogen set to replace oilon August 16, 2019 at 7:25 am
Presenting unique PGM beneficiation opportunities for South Africa is this country’s position high on the list of global locations particularly well suited to the generation of the cheapest renewable ...
- A hydrogen economy needs to prioritise industrial useon August 16, 2019 at 3:14 am
Both technologies are at commercial scale, but steam methane reforming dominates the market, as it is the more scalable and cheaper option for hydrogen production. However, trends in the energy ...
- McPhy Energy: Equity financing lineon August 15, 2019 at 11:33 pm
In the framework of the energy transition, and as a leading supplier of hydrogen production, storage and distribution equipment, McPhy contributes to the deployment of clean hydrogen throughout the ...
- From Sea Waves to Processed CO2 Emissions: Five Israeli Companies Developing Clean Energy Solutionson August 15, 2019 at 5:44 am
Harnessing pollutants for clean energy production: NewCO2Fuels Founded in 2011, NewCO2Fuels (NCF) uses high temperatures to dissociate carbon dioxide (CO2) to carbon monoxide (CO) and oxygen (O2), and ...
- Asia Pacific hydrogen peroxide market revenue to witness around 6% growth to 2024on August 13, 2019 at 4:18 am
The production process of printed circuits boards also uses hydrogen peroxide as an etchant ... technology, renewable energy and biotechnology.
- World’s largest hydrogen fuelling station launched in Shanghaion August 12, 2019 at 1:00 am
The Chinese auto maker has developed three types of new energy vehicles – electric vehicles ... and develop Shanghai into a leading centre of FCV innovation and production. The hydrogen refuelling ...
- Germany’s Big Bet On Hydrogenon August 11, 2019 at 10:50 am
(Click to enlarge) The good news is that Germany's electricity production from renewables ... it dependent on foreign producers. Hydrogen could be the energy carrier which alleviates Germany ...
via Bing News