South Korean Scientists Develop New, More Efficient Method of Producing Hydrogen

by Gage Taylor

Inspired by the way plants convert sunlight into energy, scientists at the Ulsan National Institute of Science and Technology in South Korea have developed a new type of photoelectrode that boosts the ability of solar water-splitting to produce hydrogen, an essential process in the development of hydrogen as a fuel source. The special photoelectrode is capable of absorbing a high percentage of visible light from the sun and then using it to split water molecules into hydrogen and oxygen. The multilayered photoelectrode has a two-dimensional hybrid metal-dielectric structure that consists of three layers: gold film, ultrathin TiO2 (titanium dioxide), and gold nanoparticles. According to the team’s study published last month in Nano Energy, this structure shows high light absorption, which in turn significantly enhances its photocatalytic applications. Continue reading