کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
672196 887490 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Photoelectrochemical glucose biosensor incorporating CdS nanoparticles
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Photoelectrochemical glucose biosensor incorporating CdS nanoparticles
چکیده انگلیسی

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. Under ultraviolet light, the photo-effect of the CdS nanoparticles showed enhancement of the biosensor to detect glucose. Pt nanoparticles were mixed into the Nafion film to immobilize the CdS/enzyme composites and to improve the charge transfer of the hybrid. Experimental results demonstrate the desirable characteristics of this biosensing system, e.g. a sensitivity of 1.83 μA/(mM cm2), lower detection limit (1 μM), and acceptable reproducibility and stability.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Particuology - Volume 7, Issue 5, October 2009, Pages 347–352
نویسندگان
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