I D
× COMMENTARYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILEENVIRONMENTAL MANAGEREQUIPMENT & SERVICESFOCUSNEW PRODUCTS + Show More

Comment

A panel reactor for splitting water into hydrogen

By Tetsuo Satoh |

A group of Japanese researchers have developed a photocatalytic panel reactor with large area (1 m2) that splits water into H2 and O2 using only natural sunlight. The NEDO (www.nedo.go.jp)-supported project — which includes partners Japan Technological Research Association of Artificial Photosynthetic Chemical Process (ARPChem; Tokyo), the University of Tokyo, Toto, Ltd. (Kanagawa), and Mitsubishi Chemical Corp. (Kanagawa) — aims to further the development of artificial photosynthesis for a future hydrogen-based economy. The newly developed reactor contains sheets that are fabricated by coating a substrate with a photocatalyst — particles of Al-doped SrTiO3. Water, with a depth of only 1 mm on the panel, is split into H2 and O2 upon exposure to natural sunlight, without the need for forced convection. With the 1-m2 prototype, the researchers have demonstrated a solar-to-H2 (STH) energy conversion of 0.4%, and an apparent quantum yield (AQY) of 56% at 365 nm. The evolution of gases could also be adjusted to a rate of 5.6 mL/cm2/h, to give an apparent STH efficiency of 10%. The use of ceramic membranes is proposed as a way to separate the two gases, and to prevent the buildup of explosive mixtures of H2 and O2. This shallow design,…
Related Content
Pursuing the potential of hydrogen
Hydrogen’s potential for playing a significant role in the global search for clean, secure energy sources is garnering much attention…

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
Improving chemical production processes with IIoT and AI technologies
New filtration technology for highly corrosive media
PTA production: Lowering OPEX without compromising on quality
Sure that zero means zero in your zero-liquid discharge (ZLD) process?
How separation processes profit from Industrial Internet of Things (IIoT) solutions

View More

Live chat by BoldChat