ITO electrode modified with Pt nanodendrites-decorated ZnO nanorods for enzymatic glucose sensor

2021 ◽  
Author(s):  
Nur Syafinaz Ridhuan ◽  
Noorhashimah Mohamad Nor ◽  
Khairunisak Abdul Razak ◽  
Zainovia Lockman ◽  
Nor Dyana Zakaria
Keyword(s):  
Glucose Sensor ◽  
Zno Nanorods ◽  
Ito Electrode

Fabrication of an Electrochemical Sensor for Glucose Detection using ZnO Nanorods

MRS Advances ◽  
2016 ◽  
Vol 1 (13) ◽  
pp. 861-867 ◽  
Author(s):  
Sanghamitra Mandal ◽  
Mohammed Marie ◽  
Omar Manasreh
Keyword(s):  
Response Time ◽  
Glass Substrate ◽  
Glucose Sensor ◽  
Limit Of Detection ◽  
Sol Gel ◽  
Zno Nanorods ◽  
Phosphate Buffer Solution ◽  
Buffer Solution ◽  
Coated Glass Substrate ◽  
Coated Glass

ABSTRACTAn electrochemical glucose sensor based on zinc oxide (ZnO) nanorods is fabricated, characterized and tested. The ZnO nanorods are synthesized on indium titanium oxide (ITO) coated glass substrate, using the hydrothermal sol-gel technique. The working principle of the sensor under investigation is based on the electrochemical reaction taking place between cathode and anode, in the presence of an electrolyte. A platinum plate, used as the cathode and Nafion/Glucose Oxidase/ZnO nanorods/ITO-coated glass substrate used as anode, is immersed in pH 7.0 phosphate buffer solution electrolyte to test for the presence of glucose. Several amperometric tests are performed on the fabricated sensor to determine the response time, sensitivity and limit of detection of the sensor. A fast response time less than 3 s with a high sensitivity of 1.151 mA cm-2mM-1 and low limit of detection of 0.089 mM is reported. The glucose sensor is characterized using the cyclic voltammetry method in the range from -0.8 – 0.8 V with a voltage scan rate of 100 mV/s.

Optical-transparent and flexible glucose sensor with ITO electrode

2003 ◽  
Vol 19 (1) ◽  
pp. 67-71 ◽  
Author(s):  
Kohji Mitsubayashi ◽  
Yoshihiko Wakabayashi ◽  
Satoshi Tanimoto ◽  
Daisuke Murotomi ◽  
Tatsuro Endo
Keyword(s):  
Glucose Sensor ◽  
Ito Electrode

scholarly journals GLUCOSE SENSOR USING CYCLIC VOLTAMMETRIC METHOD BASED ON NiO/ITO ELECTRODE

2021 ◽  
Vol 226 (09) ◽  
pp. 79-86
Author(s):  
Serth Sedthiphonh ◽  
Trần Quốc Toàn ◽  
Nguyễn Văn Trường ◽  
Nguyễn Quốc Dũng
Keyword(s):  
Glucose Sensor ◽  
Cyclic Voltammetric ◽  
Voltammetric Method ◽  
Ito Electrode

Điện cực NiO/ITO được chế tạo bằng phương pháp điện phân Ni từ dung dịch NiSO4 0,1 M; với chất điện li hỗ trợ H­2SO4 0,1 M sử dụng hệ ba điện cực để hình thành nên điện cực Ni/ITO sau đó oxi hóa trong không khí để chuyển Ni thành NiO. Hình thái học và cấu trúc của vật liệu được đo bằng phương pháp hiển vi điện tử quét (SEM), nhiễu xạ tia X (XRD) và phổ Raman. Phương pháp quét thế vòng được sử dụng để khảo sát tính chất của điện cực NiO/ITO trong dung dịch NaOH 0,1 M đối với glucose và đồng thời dùng để định lượng glucose trong dung dịch. Điều kiện để lắng đọng điện hóa Ni lên đế ITO trong dung dịch NiSO4 0,1 M: với chất điện li hỗ trợ H­2SO4 0,1 M ở thế -1,2 V (so với điện cực so sánh bạc/bạc clorua trong KCl bão hòa) với thời gian 360 giây. Phương pháp quét thế vòng xác định nồng độ glucose trong dung dịch cho thấy khoảng tuyến tính từ 0 đến 500 μM, R = 0,9885 độ nhạy 2088 µAcm-2mM-1 cho chiều quét dương và từ 0,5 đến 13 mM, R = 0,9966 cho chiều quét âm, giới hạn phát hiện 5 μM.

scholarly journals An enzymatic glucose detection sensor using ZnO nanostructure

MRS Advances ◽  
2016 ◽  
Vol 1 (13) ◽  
pp. 847-853 ◽  
Author(s):  
Mohammed Marie ◽  
Sanghamitra Mandal ◽  
Omar Manasreh
Keyword(s):  
Glucose Sensor ◽  
Limit Of Detection ◽  
Sol Gel ◽  
Zno Nanorods ◽  
High Sensitivity ◽  
High Density ◽  
Glucose Detection ◽  
Zno Nanostructure ◽  
Growth Method ◽  
Gel Technique

Abstract:Glucose sensor based on ITO/ZnO NRs/GOx/nafion is fabricated and tested under different glucose concentrations. Hydrothermal growth method along with sol-gel technique is used to grow high quality ZnO nanorods that have well-alignment and high density with an acceptable aspect ratio. The as-grown of ZnO nanorods are used to fabricate a working electrode that can be used for glucose detection in blood after a modification process with GOx and nafion membrane. Annealing at 110 °C helped in improves the crystallinity of the seed layer and as a result, a high density and well alignment as-grown ZnO nanorods were obtained. High sensitivity and short response time were obtained from the fabricated device with an acceptable lower limit of detection.

ZnO nanorods covered with a TiO2 layer: simple sol–gel preparation, and optical, photocatalytic and photoelectrochemical properties

2015 ◽  
Vol 3 (24) ◽  
pp. 12748-12760 ◽  
Author(s):  
Maciej Kwiatkowski ◽  
Igor Bezverkhyy ◽  
Magdalena Skompska
Keyword(s):  
Sol Gel ◽  
Zno Nanorods ◽  
Core Shell ◽  
Photoelectrochemical Properties ◽  
Tio2 Layer ◽  
Gel Method ◽  
Sol Gel Method ◽  
Ito Electrode ◽  
Gel Preparation

In this work, composite core–shell ZnO/TiO2 materials were fabricated by deposition of TiO2 layers via sol–gel method on ZnO nanorods hydrothermally grown on ITO electrode.

scholarly journals Facile Synthesis of CuO/ITO Film Via the Chronoamperometric Electrodeposition for Nonenzymatic Glucose Sensing

2020 ◽  
Vol 30 (2) ◽  
pp. 161
Author(s):  
Duong Thi Thuy Tran ◽  
Dung Quoc Nguyen ◽  
Chuyen Hong Pham ◽  
Lam Dai Tran ◽  
Dai Tien Nguyen
Keyword(s):  
Electrochemical Properties ◽  
Indium Tin Oxide ◽  
Glucose Sensor ◽  
High Sensitivity ◽  
Glucose Sensing ◽  
Serum Samples ◽  
Glucose Response ◽  
X Ray ◽  
Ito Electrode ◽  
Naoh Solution

We report on the synthesis of copper (II) oxide (CuO)/indium tin oxide (ITO) electrode via the electrochemical deposition method using a CuSO4 solution and then thermal oxidation in air at temperature of 400 oC for 2 h. The crystalline structure and morphology of CuO were characterized by scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray diffraction (XRD). The electrochemical properties of the CuO/ITO electrode to glucose in the alkaline medium of 0.1 M NaOH solution were investigated by cyclic voltammetry (CV) and Chronnoamperometry. The CuO-N/ITO electrode showed the best electrochemical properties for glucose detection in comparison to the others. Chronnoamperometry of CuO-N/ITO electrode to the glucose response showed excellent stability, the linear range of 1 mM to 3600 mM with high sensitivity of 283.6 mAcm-2mM-1 and 0.61 mM of the detection limit (S/N=3). A good response of the CuO-N/ITO electrode, which was investigated for different human serum samples, indicates a high potential of its towards a glucose sensor for analysis in real examples.

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