Bioconversion of CO2 by photochemical materials

28 sept 2010
11:25 - 11:55

Bioconversion of CO2 by photochemical materials

This presentation describes the fabrication, via immobilisation of photosynthetically active entities within silica materials, of photobiochemical leaf-like materials capable of the energy conversion and CO2 assimilation as the principal component of a photobioreactor.   

The photosynthetic activity shows that the material was able to produce oxygen for over a month. The photochemical material was also able to reduce CO2 into carbohydrates. A part of these photosynthates were excreted into the aqueous phase contained within the pores of silica. By a simple extraction method, these products could be recovered. The molecules excreted by the material were mainly polysaccharides composed of rhamnose, galactose, glucose, xylose and mannose units. Considering that the quantity of sugars increased as a function of time, this photosynthetic material holds much promise in the development of new, green chemical processes. For instance, atmospheric CO2 could be strategically exploited via this kind of artificial leaf-like materials, as a source of carbon to produce valuable compounds or biofuels while the active biomass is continuously reused. These results constitute a significant advance towards the final goal, long-lasting semi-artificial photobioreactors that can advantageously exploit solar radiation to convert polluting carbon dioxide into useful biofuels, sugars or medical metabolites.

 

  1. F. Meunier, P. Van Cutsem, Y. U. Kwon and B. L. Su, J. Mater. Chem., 2009, 19, 4131.
  2. F. Meunier, P. Van Cutsem, Y. U. Kwon and B. L. Su, J. Mater. Chem., 2009, 19, 1505.
  3. C. Rooke, A. Léonard, H. Sarmento, J. P. Descy and B. L. Su, J. Mater. Chem., 2009, 18, 2833.
  4. C. Rooke, A. Léonard and B. L. Su, J. Mater. Chem., 2009, 18, 1333.
  5. C. Rooke, C. Meunier, A. Léonard and B. L. Su, Pure Appl. Chem., 2008, 80, 2345.
  6. F. Meunier, J. C. Rooke, A. Léonard, P. Van Cutsem and B. L. Su, J. Mater. Chem., 2010, 20, 929.
  7. C. Rooke, A. Léonard, C. F. Meunier, H. Sarmento, J. P. Descy and B. L. Su, J. Colloid Interface Sci., 2010, 344, 348.
  8. F. Meunier, J.C. Rooke, K. Hadju, P. Van Cutsem, P. Cambier, A. Léonard, B. L. Su, Langmuir, 2010, DOI: 10.1021/la9039286.
  9. F. Meunier, Ph. Dandoy, B. L. Su, J. Colloid. Interface Sci., 2010, 342, 211.
  10. Léonard, J. C. Rooke, C. F. Meunier, H. Sarmento, J. P. Descy and B. L. Su, Energy Environ. Sci., 2010, 3, 370.
  11. F. Meunier, J. C. Rooke, A. Léonard, H. Xie and B. L. Su, Chem. Commun. (Feature Article), 2010, 46, 3843