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A novel photoelectrochemical biosensor incorporating nanosized CdS semiconductor crystals with enzyme to enhance photochemical reaction has been investigated. CdS nanoparticles were synthesized by using dendrimer PAMAM as inner templates. The CdS nanoparticles and glucose oxidase (GOD) were immobilized on Pt electrode via layer-by-layer (LbL) technique to fabricate a biological–inorganic hybrid system...
The direct electrochemistry of glucose oxidase (GOD) adsorbed on a CdS nanoparticles modified pyrolytic graphite electrode was investigated, where the enzyme demonstrated significantly enhanced electron-transfer reactivity. GOD adsorbed on CdS nanoparticles maintained its bioactivity and structure, and could electrocatalyze the reduction of dissolved oxygen, which resulted in a great increase of the...
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