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Green and efficient conversion of CO2 to methanol by biomimetic coimmobilization of three dehydrogenases in protamine-templated titania / Qianyun Sun in Industrial & engineering chemistry research, Vol. 48 N° 9 (Mai 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 9 (Mai 2009) . - pp. 4210–4215 Titre : Green and efficient conversion of CO2 to methanol by biomimetic coimmobilization of three dehydrogenases in protamine-templated titania Type de document : texte imprimé Auteurs : Qianyun Sun, Auteur ; Yanjun Jiang, Auteur ; Zhongyi Jiang, Auteur Année de publication : 2009 Article en page(s) : pp. 4210–4215 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Carbon  dioxide  Mutienzyme  system  Titania  particles  Biomimetic  mineralization  process Résumé : A green and efficient mutienzyme system was established, which efficiently converted carbon dioxide into methanol, by encapsulating three dehydrogenases within titania particles through a facile and mild biomimetic mineralization process. The enzyme-containing titania particles were characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, and X-ray photoelectron spectroscopy (XPS). The results indicated that the enzyme-containing titania particles were amorphous and consisted of interconnected nanospheres with sizes in the range of 400−600 nm. The three encapsulated dehydrogenases (formate dehydrogenase, formaldehyde dehydrogenase, alcohol dehydrogenase) sequentially converted carbon dioxide into HCOOH, CHOH, and CH3OH using NADH as a terminal electron donor for each dehydrogenase-catalyzed reduction. Compared to the open-style system which directly performed the bioconversion using free enzymes in aqueous solution, higher reaction yield in a wider pH and temperature range was obtained by the closed-style coimmobilization multienzyme system. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801931j [article] Green and efficient conversion of CO2 to methanol by biomimetic coimmobilization of three dehydrogenases in protamine-templated titania [texte imprimé] / Qianyun Sun, Auteur ; Yanjun Jiang, Auteur ; Zhongyi Jiang, Auteur . - 2009 . - pp. 4210–4215. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 9 (Mai 2009) . - pp. 4210–4215 Mots-clés : Carbon  dioxide  Mutienzyme  system  Titania  particles  Biomimetic  mineralization  process Résumé : A green and efficient mutienzyme system was established, which efficiently converted carbon dioxide into methanol, by encapsulating three dehydrogenases within titania particles through a facile and mild biomimetic mineralization process. The enzyme-containing titania particles were characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, and X-ray photoelectron spectroscopy (XPS). The results indicated that the enzyme-containing titania particles were amorphous and consisted of interconnected nanospheres with sizes in the range of 400−600 nm. The three encapsulated dehydrogenases (formate dehydrogenase, formaldehyde dehydrogenase, alcohol dehydrogenase) sequentially converted carbon dioxide into HCOOH, CHOH, and CH3OH using NADH as a terminal electron donor for each dehydrogenase-catalyzed reduction. Compared to the open-style system which directly performed the bioconversion using free enzymes in aqueous solution, higher reaction yield in a wider pH and temperature range was obtained by the closed-style coimmobilization multienzyme system. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801931j