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231224s2011 xx |||||o 00| ||eng c |
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|a 10.1021/la105029h
|2 doi
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|a pubmed24n0691.xml
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|a (DE-627)NLM20743316X
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|a (NLM)21488617
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Vinoba, Mari
|e verfasserin
|4 aut
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|a Immobilization of human carbonic anhydrase on gold nanoparticles assembled onto amine/thiol-functionalized mesoporous SBA-15 for biomimetic sequestration of CO2
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|c 2011
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 30.08.2011
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|a Date Revised 25.11.2016
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a A biocatalyst was synthesized by immobilizing human carbonic anhydrase onto gold nanoparticles assembled over amine/thiol-functionalized mesoporous SBA-15. The physicochemical properties of the functionalized mesoporous SBA-15 were obtained by XRD, BET, FE SEM, HR TEM, EDS, and zeta potential analysis. The biocatalytic performance was studied for para-nitrophenyl acetate (p-NPA) hydrolysis. The kinetic parameters K(m) were found to be 22.35 and 27.75 mM, and K(cat)/K(m) values were 1514.09 and 1612.25 M(-1) s(-1) for HCA immobilized on gold nanoparticles assembled on amine/thiol-functionalized mesoporous SBA-15 (HCA/Au/APTES/SBA-15 and HCA/Au/MPTES/SBA-15), respectively. These HCA/Au/APTES/SBA-15 and HCA/Au/MPTES/SBA-15 were investigated for biocatalytic hydration of CO(2) and its precipitation as CaCO(3). The amount of CaCO(3) precipitated over HCA/Au/MPTES/SBA-15 was nearly the same as that precipitated over free HCA. Storage stability and reusability studies suggested that HCA/Au/MPTES/SBA-15 retained its activity even after 20 days storage at 25 °C and 20 recycling runs. The present results demonstrate that HCA/Au/MPTES/SBA-15 and HCA/Au/APTES/SBA-15 are highly efficient potential nanobiocatalysts for industrial-scale CO(2) sequestration
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Amines
|2 NLM
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|a Enzymes, Immobilized
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|a Phenylacetates
|2 NLM
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|a Propylamines
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|a SBA-15
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|a Silanes
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|a Sulfhydryl Compounds
|2 NLM
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|a Carbon Dioxide
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|a 142M471B3J
|2 NLM
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|a Gold
|2 NLM
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|a 7440-57-5
|2 NLM
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|a Silicon Dioxide
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|a 7631-86-9
|2 NLM
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|a Carbonic Anhydrases
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|a EC 4.2.1.1
|2 NLM
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|a phenylacetic acid
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|a ER5I1W795A
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|a amino-propyl-triethoxysilane
|2 NLM
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|a L8S6UBW552
|2 NLM
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|a Lim, Kyoung Soo
|e verfasserin
|4 aut
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|a Lee, Si Hyun
|e verfasserin
|4 aut
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|a Jeong, Soon Kwan
|e verfasserin
|4 aut
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|a Alagar, Muthukaruppan
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 27(2011), 10 vom: 17. Mai, Seite 6227-34
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:27
|g year:2011
|g number:10
|g day:17
|g month:05
|g pages:6227-34
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|u http://dx.doi.org/10.1021/la105029h
|3 Volltext
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|h 6227-34
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