Lalaoui Noémie, Le Goff Alan, Holzinger Michael, Mermoux Michel, Cosnier Serge
Univ. Grenoble Alpes, CNRS DCM UMR 5250, 38000 Grenoble (France).
Chemistry. 2015 Feb 16;21(8):3198-201. doi: 10.1002/chem.201405557. Epub 2014 Dec 11.
Reduced graphene oxide (RGO) was covalently functionalized by the in situ generation and reduction of anthraquinone diazonium salt. Deposition on multi-wall carbon nanotube (MWCNT) electrodes prevents the aggregation of RGO nanosheets and allows the stable deposition of modified graphene, accompanied with excellent electron transfer properties. Laccases were immobilized on the nanostructured electrode by the interaction between the anthraquinone moiety and the laccase hydrophobic pocket located near the T1 copper center. The MWCNT/f-RGO electrode exhibits efficient bioelectrocatalytic oxygen reduction, with current densities of up to 0.9 mA cm(-2) .
通过蒽醌重氮盐的原位生成和还原对还原氧化石墨烯（RGO）进行共价功能化。沉积在多壁碳纳米管（MWCNT）电极上可防止RGO纳米片的聚集，并允许修饰石墨烯的稳定沉积，同时具有优异的电子转移性能。通过蒽醌部分与位于T1铜中心附近的漆酶疏水口袋之间的相互作用，将漆酶固定在纳米结构电极上。MWCNT/f-RGO电极表现出高效的生物电催化氧还原性能，电流密度高达0.9 mA cm(-2) 。
