Accelerated CO 2 capture using immobilized carbonic anhydrase on polyethyleneimine/dopamine co-deposited MOFs
Biochemical Engineering Journal, ISSN: 1369-703X, Vol: 189, Page: 108719
2022
- 14Citations
- 19Captures
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Most Recent News
New Findings in Chemicals and Chemistry Described from Tianjin University of Science and Technology (Accelerated Co2 Capture Using Immobilized Carbonic Anhydrase On Polyethyleneimine/dopamine Co-deposited Mofs)
2023 FEB 15 (NewsRx) -- By a News Reporter-Staff News Editor at Chemicals & Chemistry Daily Daily -- Research findings on Chemicals and Chemistry are
Article Description
Immobilized carbonic anhydrase (CA, EC4.2.1.1) for CO 2 capture has been intensively investigated. Unfortunately, the immobilized CA usually shows low CO 2 capture efficiency due to lack of CO 2 capture function for the conventional CA supports. In this study, an acid-resistant metal-organic framework MOF-808 was first modified by co-deposition of PEI (polyethyleneimine) and PDA (polydopamine) (PEI/PDA-MOF-808). Subsequently, the PEI/PDA-MOF-808 with a large number of amino groups was used as the strengthening material of CO 2 capture to immobilize CA (CA@PEI/PDA-MOF-808). The resultant CA@PEI/PDA-MOF-808 showed a considerably improved CO 2 capture capacity compared with free CA and PEI/PDA-MOF-808. The amount of CaCO 3 produced by CA@PEI/PDA-MOF-808 was 11.0-fold and 2.5-fold higher than free CA and PEI/PDA-MOF-808, respectively. After 8 consecutive rounds of CO 2 conversion, the total production of CaCO 3 by CA@PEI/PDA-MOF-808 was 92-fold higher than free CA, reaching 294.0 mg. Furthermore, CA@PEI/PDA-MOF-808 displayed high thermostability, pH stability, storage stability, and reusability compared with free counterpart. After 1 h treatment at pH 3.0, CA@PEI/PDA-MOF-808 preserved 53.6% of its original activity while free CA was almost inactivated. In conclusion, this work provides a promising strategy for enzymatic CO 2 conversion.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S1369703X22003886; http://dx.doi.org/10.1016/j.bej.2022.108719; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85141943776&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S1369703X22003886; https://dx.doi.org/10.1016/j.bej.2022.108719
Elsevier BV
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