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Immobilisation of microperoxidase-11 into layered MoO3 for applications of enzymatic conversion
journal contributionposted on 2019-09-01, 00:00 authored by Yichao WangYichao Wang, S Zhang, E Haque, B Y Zhang, J Z Ou, J Liu, Z Liu, Y Li, Weimin Gao, F Haque, K Xu, H Wang, David CahillDavid Cahill, Lingxue KongLingxue Kong, Wenrong YangWenrong Yang
Microperoxidase-11 (MP-11)has been widely used in enzymatic reactions. Further improvement of its performance requires a better charge transfer and more exposure of its active site in the enzymatic conversions, which can be achieved by immobilisation of MP-11 into functional materials. However, conventional immobilisation techniques always suffer from non-specific and uncontrolled weak interactions and energy level of two entities in the hybrid is not perfectly matched, thus resulting in limited improvement of the system. In this work, a hybrid material of layered MoO3 and MP-11 was synthesised by a self-assembly technique through a covalent interaction. Physicochemical characterisation indicated that there is a charge transfer from MP-11 to MoO3 and a covalent bond is formed in the hybrid. A notable enhancement of biocatalysis and photocurrent conversion were observed in the studies, which are due to a synergistic effect and band alignment of the two entities in the hybrid. The superior combined properties provide a great opportunity for developing high performance enzymatic conversion systems.