TY - JOUR
T1 - Polysulfone biomimetic membrane for CO2 capture
AU - Nogalska, Adrianna
AU - Ammendola, Mario
AU - Portugal, Carla A. M.
AU - Tylkowski, Bartosz
AU - Crespo, Joao G.
AU - Garcia – Valls, Ricard
N1 - Sem PDF conforme despacho.
This work is financially supported by Marti Franques scholarship by University Rovira y Virgili (Marti Franques scholarship 2015PMFPIPF). The authors would like to thank European Commission for the Erasmus fellowship permitting the collaboration between Univeristat Rovira Virgili, Tarragona, Spain and Universidade Nova de Lisboa, Lisbon, Portugal.
PY - 2018/10/1
Y1 - 2018/10/1
N2 - Constant increase of greenhouse gas emission by human activity causes a climate change, with carbon dioxide as the main contributor. In nature, CO2 fixation takes place in leaves where carbonic anhydrase (CA) catalyzes the hydration reaction. Inspired by this photosynthesis process, we come with a polysulfone biomimetic membrane containing CA for CO2 capture. Two immobilization approaches were investigated: physical and chemical. For this reason, we prepared a blank polysulfone membrane to physically adsorb the enzyme on its surface, and a membrane with dispersed ferritic nanoparticles -NH2 terminated used for covalent binding of the enzyme. The scope of this study is to evaluate the influence of the immobilization type on the enzyme activity. The obtained nanoparticles and membranes were characterized by TEM, WAXD, EDX, SEM and CA, respectively. The attached amount was determined by ICP, whereas the activity and CO2 solubility were estimated experimentally. Studies showed that the enzyme is attached more efficiently by the physical adsorption. Nevertheless, covalent binding favors its activity by stabilizing the structure.
AB - Constant increase of greenhouse gas emission by human activity causes a climate change, with carbon dioxide as the main contributor. In nature, CO2 fixation takes place in leaves where carbonic anhydrase (CA) catalyzes the hydration reaction. Inspired by this photosynthesis process, we come with a polysulfone biomimetic membrane containing CA for CO2 capture. Two immobilization approaches were investigated: physical and chemical. For this reason, we prepared a blank polysulfone membrane to physically adsorb the enzyme on its surface, and a membrane with dispersed ferritic nanoparticles -NH2 terminated used for covalent binding of the enzyme. The scope of this study is to evaluate the influence of the immobilization type on the enzyme activity. The obtained nanoparticles and membranes were characterized by TEM, WAXD, EDX, SEM and CA, respectively. The attached amount was determined by ICP, whereas the activity and CO2 solubility were estimated experimentally. Studies showed that the enzyme is attached more efficiently by the physical adsorption. Nevertheless, covalent binding favors its activity by stabilizing the structure.
KW - Biomimetic membrane
KW - carbonic anhydrase immobilization
KW - CO capture
KW - polysulfone
UR - http://www.scopus.com/inward/record.url?scp=85046016118&partnerID=8YFLogxK
U2 - 10.1142/S1793604718500467
DO - 10.1142/S1793604718500467
M3 - Article
AN - SCOPUS:85046016118
VL - 11
JO - Functional Materials Letters
JF - Functional Materials Letters
SN - 1793-6047
IS - 5
M1 - 1850046
ER -