Friday, October 31, 2014
Search
  
Submit your own News for
inclusion in our Site.
Click here...
Breaking News
Pirate Bay Co-founder Sentenced To 42 Months Imprisonment
SEL Showcases 1058ppi And Foldable OLED Displays
New Outlook for Mac Available Now, Office for Mac Coming In 2015
Updated BBM Offers More Privacy, Control and More
Panasonic Raises Profit Outlook
Toshiba Offers New 4TB and 5TB Desktop HDDs
Samsung Introduces New Ultra Slim Galaxy A5 and Galaxy A3 Smartphones For The Chinese Market
Sharp 2Q Profit Slides
Active Discussions
DVD/DL for Optiarc 7191S at 8X
Copied dvd's say blank in computer only
Made video, won't play back easily
New Features In Firefox 33
updated tests for dvd and cd burners
How to generate lots of different CDs quickly
Yamaha CRW-F1UX
help questions structure DVDR
 Home > News > General Computing > Panason...
Last 7 Days News : SU MO TU WE TH FR SA All News

Tuesday, July 31, 2012
Panasonic Artificial Photosynthesis System Generates Organic Materials from CO2 and Water


Panasonic has developed an artificial photosynthesis system which converts carbon dioxide (CO2) to organic materials by illuminating with sunlight at a world's top efficiency of 0.2%.

The efficiency is on a comparable level with real plants used for biomass energy. The key to the system is the application of a nitride semiconductor which makes the system simple and efficient. This development will be a foundation for the realization of a system for capturing and converting wasted carbon dioxide from incinerators, power plants or industrial activities.

CO2 is one of the substances responsible for greenhouse effect and as such, efforts are being made to reduce the emissions of CO2 worldwide. The problem of CO2 is also directly connected to an issue of the depletion of fossil fuels. Artificial photosynthesis is the direct conversion from CO2 into organic materials, which can solve both of these problems.

In the previous approaches so far, the systems have had complex structures such as organic complexes or plural photo-electrodes, which makes it difficult to improve their efficiency in response to the light. Panasonic's artificial photosysnthesis system has a simple structure with highly efficient CO2 conversion, which can utilize direct sunlight or focused light.

Panasonic found firstly that a nitride semiconductor has the capability to excite the electrons with enough high energy for the CO2 reduction reaction. Nitride semiconductors have attracted attention for their potential applications in highly efficient optical and power devices for energy saving. However, its potential was revealed to extend beyond solid devices; more specifically, it can be used as a photo-electrode for CO2 reduction. Making a deviced structure through the thin film process for semiconductors, the performance as a photo-electrode has highly improved.

The CO2 reduction takes place on a metal catalyst at the opposite side of nitride semiconductor photo-electrode. The metal catalyst plays an important role in selecting and accelerating the reaction. Here, it is noted that the system comprises of only inorganic materials, which can reduce the CO2 with low energy loss. Because of this, the amount of reaction products is exactly proportional to the light power. This is one of the merits in such an all-inorganic system while some conventional systems cannot follow the light power in general because of their internal or external rate-limiting processes in the complex structures.

The system with a nitride semiconductor and a metal catalyst generates mainly formic acid from CO2 and water with light at a world's top efficiency of 0.2%. The efficiency is of a comparable level to real plants used in the biomass energy source. The formic acid is an important chemical in industry for dye and fragrances. The reaction rate is completely proportional to the light power due to the low energy loss with simple structure; in other words, the system can respond to focused light. This will make it possible to realize a simple and compact system for capturing and converting wasted carbon dioxide from incinerators and electric generation plants.


Previous
Next
LSI Optimizes SandForce Processors For Ultrabooks        All News        OCZ Z-Drive R4 PCIe SSDs Achieve VMware-Ready
Google Buys Social Ad Start-up Wildfire     General Computing News      Renesas To Receive $633 Million Support From Its Shareholders

Get RSS feed Easy Print E-Mail this Message

Related News
Panasonic Raises Profit Outlook
Panasonic AX800 4K ULTRA HD TVs Update Adds Compatibility With Netflix 4K Streaming
Panasonic Introduces Rugged 7-inch Android Tablet
Panasonic to Start Licensing Unified IP Core for HD-PLC
Panasonic to Offload Sanyo's North America TV Business
Panasonic Develops 85-inch 4k Touch Screen, Showcases New HEVC LSI
Panasonic Commercializes Pin-Shaped Lithium Ion Battery For Wearables
Panasonic To Close DVD-player Factory In Slovakia
Panasonic and Leica Expand Partnership Agreement
Panasonic Reveals The Lumix DMC-LX100, Lumix DMC-GM5 Cameras And the DMC-CM1 Smartphone
Panasonic Showcases Optimized Workflow at IBC 2014
Panasonic Announces Rugged Toughpad FZ-E1 Tablet at IFA 2014

Most Popular News
 
Home | News | All News | Reviews | Articles | Guides | Download | Expert Area | Forum | Site Info
Site best viewed at 1024x768+ - CDRINFO.COM 1998-2014 - All rights reserved -
Privacy policy - Contact Us .