title: Tuning laccase catalytic activity with phosphate functionalized carbon dots by visible light.
abstract: The phosphate functionalized carbon dots (PCDs) with high biocompatibility and low toxicity can be used as efficient additives for the construction of laccase/PCDs hybrids catalyst. A series of experiments indicated that the activity of laccase/PCDs was higher than that of free laccase (increased by 47.7%). When laccase/PCDs hybrids catalyst was irradiated with visible light (laccase/PCDs-Light), its activity was higher than that of laccase/PCDs hybrids without light irradiation (increased by 92.1%). In the present system, the T1 Cu in laccase was combined with the phosphate group on PCDs, which can increase binding capacity of laccase/PCDs hybrids and substrate. Further, the visible light irradiation increased the donating and accepting electronic capability of the laccase/PCDs hybrids, improving their catalytic activity.
authors.forename: Hao
authors.initials: H
authors.lastname: Li
authors.forename: Sijie
authors.initials: S
authors.lastname: Guo
authors.forename: Chuanxi
authors.initials: C
authors.lastname: Li
authors.forename: Hui
authors.initials: H
authors.lastname: Huang
authors.forename: Yang
authors.initials: Y
authors.lastname: Liu
authors.forename: Zhenhui
authors.initials: Z
authors.lastname: Kang
mesh_terms: D002244:Carbon / Q000737:chemistry*; D002384:Catalysis / Q000528:radiation effects; D004560:Electricity; D042845:Laccase / Q000378:metabolism*; D008027:Light; D010710:Phosphates / Q000737:chemistry*; D056951:Photoelectron Spectroscopy; D013052:Spectrometry, X-Ray Emission; D013056:Spectrophotometry, Ultraviolet
chemical_list: D010710:Phosphates; D002244:Carbon; D042845:Laccase
keywords: activity tuning; carbon dots; laccase; phosphate modification; visible light