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Producing hydrogen from water with carbon/charcoal powder

Date:
August 28, 2013
Source:
American Chemical Society
Summary:
In the latest advance in efforts to find an inexpensive way to make hydrogen from ordinary water -- one of the keys to the much-discussed "hydrogen economy" -- scientists are reporting that powder from high-grade charcoal and other forms of carbon can free hydrogen from water illuminated with laser pulses.

Charcoal dust.
Credit: Mexrix / Fotolia

In the latest advance in efforts to find an inexpensive way to make hydrogen from ordinary water -- one of the keys to the much-discussed "hydrogen economy" -- scientists are reporting that powder from high-grade charcoal and other forms of carbon can free hydrogen from water illuminated with laser pulses.

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A report on the discovery appears in ACS' Journal of Physical Chemistry C.

Ikuko Akimoto and colleagues point out that traditional approaches to breaking down water, which consists of hydrogen and oxygen, involve use of expensive catalysts or electric current passed through water. Since economical production of hydrogen from water could foster a transition from coal, oil and other fossil fuels, scientists have been searching for less expensive catalysts. Those materials speed up chemical reactions that otherwise would not work effectively. Based on hints from research decades ago, the scientists decided to check out the ability of carbon powder and charcoal powder, which are inexpensive and readily available, to help split hydrogen gas from oxygen in water.

Akimoto's team tested carbon and charcoal powders by adding them to water and beaming a laser in nanosecond pulses at the mixtures. The experiment generated hydrogen at room temperature without the need for costly catalysts or electrodes. Its success provides an alternative, inexpensive method for producing small amounts of hydrogen from water.


Story Source:

The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Journal Reference:

  1. Ikuko Akimoto, Kousuke Maeda, Nobuhiko Ozaki. Hydrogen Generation by Laser Irradiation of Carbon Powder in Water. The Journal of Physical Chemistry C, 2013; 130819121958006 DOI: 10.1021/jp4012558

Cite This Page:

American Chemical Society. "Producing hydrogen from water with carbon/charcoal powder." ScienceDaily. ScienceDaily, 28 August 2013. <www.sciencedaily.com/releases/2013/08/130828114250.htm>.
American Chemical Society. (2013, August 28). Producing hydrogen from water with carbon/charcoal powder. ScienceDaily. Retrieved October 24, 2014 from www.sciencedaily.com/releases/2013/08/130828114250.htm
American Chemical Society. "Producing hydrogen from water with carbon/charcoal powder." ScienceDaily. www.sciencedaily.com/releases/2013/08/130828114250.htm (accessed October 24, 2014).

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