کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
740848 894191 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
ZnO modified gold disc: A new route to efficient glucose sensing
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
ZnO modified gold disc: A new route to efficient glucose sensing
چکیده انگلیسی

Surface of a gold disc was modified by depositing ZnO film electrochemically. AFM analysis of the film shows c-axis oriented pillar like structures grown normal to the surface. Sensor surface was prepared by immobilizing glucose oxidase (GOD) on the ZnO modified gold disc. Different concentrations of glucose (50–1000 ng/ml) were taken to monitor the sensor response. Sensor was found to be highly sensitive to low concentrations of glucose and sensitivity increases linearly in the range of 50–250 ng/ml. The high sensitivity of the ZnO modified gold disc may be attributed to the SPR induced electron transfer between the two systems (i.e. Au and ZnO). The work indicates promising application of the system as a tool for studying sensitive bio-specific interactions, with further development of highly sensitive and selective bio-molecular and chemical SPR based optical sensors.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 156, Issue 1, 10 August 2011, Pages 383–387
نویسندگان
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