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A new photocatalytic material based on algal cells
G D Hitchens1, T D Rogers, O J Murphy
1Lynntech, Inc., Bryan, Texas 77803.
Biochemical and Biophysical Research Communications
|March 29, 1991
Summary
Researchers deposited metallic platinum onto cyanobacteria membranes. This enabled hydrogen generation from water using the platinum catalyst and photosynthesis, without needing other agents.
Area of Science:
- Biotechnology
- Photocatalysis
- Microbiology
Background:
- Cyanobacteria utilize photosynthesis for energy.
- Intracellular structures are targets for catalytic applications.
- Hydrogen production from water is a key renewable energy goal.
Purpose of the Study:
- To deposit metallic platinum onto intracellular photosynthetic membranes of cyanobacteria.
- To investigate platinum's catalytic activity for hydrogen generation.
- To establish a method for in-situ catalyst placement within microorganisms.
Main Methods:
- Whole cells of cyanobacteria were used.
- Metallic platinum was deposited onto the surfaces of intracellular photosynthetic membranes.
- Hydrogen generation was measured via photosynthetic water decomposition.
Main Results:
- Deposited platinum particles catalyzed hydrogen generation.
- Hydrogen was produced from water decomposition through photosynthesis.
- No exogenous electron transfer agents were required for catalysis.
Conclusions:
- Metallic platinum can be effectively deposited onto cyanobacteria photosynthetic membranes.
- Platinum acts as an efficient catalyst for hydrogen production.
- This method allows for direct contact between metal catalysts and intracellular microbial structures.