Particle and Aerosol Research Vol. 9, No. 4, December 2013 |
ISSN : 1738-8716 (Print) ISSN : 2287-8130 (Online) |
Carbonic Anhydrase Mimicry for Carbon Dioxide Fixation and Calcium Carbonate Mineralization
ÇÁ¶óÄ«½¬ æµå¶ó »çÈÄ⋅À念³²⋅ä¼öõ⋅À̽¿ì
Abstracts
Copper (II) and Nickel (II) mimic complexes of enzyme carbonic anhydrase were evaluated under ambient condition
for carbon dioxide capture and conversion process. The synthesized complexes were characterized by ATR‐FTIR and
UV‐DR spectroscopy. It was found that all the complexes have biomimetic activity towards CO2 using para‐nitrophenyl
acetate (p‐NPA) hydrolysis as the model reaction. Interestingly, the proper geometry obtained by the restricted
orientation of tripodal N atoms in Cu (II) complex of 2,6‐bis(2‐benzimidazolyl) pyridine showed the highest activity
(1.14 au) compared to others. The CO2 bio‐mineralization to CaCO3 was carried out via in‐vitro crystallization
approach. Results indicate that the biomimetic complexes have a role in determining CaCO3 morphology. The present
observations establish a qualitative insight for the design of improved small‐molecule catalysts for carbon capture.
Keywords£ºCarbon dioxide, Carbonic anhydrase, Metal complex, Calcium Carbonate
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