CNTs-Pt甲醛传感器和CNTs-Au葡萄糖传感器的制备及性能研究

IF 1.6 4区 工程技术 Q3 INSTRUMENTS & INSTRUMENTATION
B. Zhao, Yawei Zhou, Jun Qu, Fei Yin, S. Yin, Yongwei Chang, Wu Zhang
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引用次数: 2

摘要

自1991年饭岛发现碳纳米管(carbon nanotubes, CNTs)以来,由于其独特的物理和化学性质,越来越受到人们的重视。CNTs具有一维纳米结构、高表面吸附能力、良好的导电性和电子弹道传输特性,因而具有优异的机械、电学、物理和化学性能。碳纳米管是制造纳米气体传感器的理想基础材料。纳米金属材料具有增强电极活性和促进电子转移的作用,因此如果使用复合纳米金属材料M(如Au、Pt、Cu、Pd)和CNTs,其组分的各种特性会产生协同效应。采用这种复合材料作为电极的电化学传感器具有较高的检测灵敏度。设计/方法/途径采用化学气相沉积技术合成碳纳米管,然后进行纯化。采用旋转圆盘处理机(SDP)化学沉积法制备了CNTs-M(Pt,Au)悬浮液,并将其涂覆在金电极上。利用静电效应将葡萄糖氧化酶固定在金电极上,构建了葡萄糖氧化酶修饰电极。将铂粒子电化学沉积在经CNTs修饰的GCE上,制备了CNTs- pt / GCE电极。在扫描电镜和透射电镜下分析了收获的CNTs-M (M = Au, Pt)的微观结构。对传感器在医学检测中的应用进行了评价。结果表明,CNTs-Au生物传感器对葡萄糖检测具有良好的重现性、稳定性和快速响应性,可用于临床检测人血清中葡萄糖浓度。CNTs-Pt/GCE检测甲醛灵敏度高,重现性好。独创性/价值本研究首次采用电沉积的方法,通过SDP自组装技术对纳米Pt和Au进行修饰。将铂粒子电化学沉积在经CNTs修饰的GCE上,制备了CNTs- pt /GCE电极。首先利用静电效应将葡萄糖氧化酶固定在Au电极上,制备了碳纳米管-Au修饰电极。用循环伏安法研究了葡萄糖在碳纳米管- au和甲醛在碳纳米管- pt /GCE上的电化学行为。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Preparation and performance of CNTs-Pt formaldehyde sensor and CNTs-Au glucose sensor
Purpose Since carbon nanotubes (CNTs) were discovered by Iijima in 1991, they have gained more and more attention by people because of their unique physical and chemical properties. The CNTs have one-dimensional nanostructure, high surface adsorption capacity, good conductivity and electronic ballistic transmission characteristics and therefore have excellent mechanical, electrical, physical and chemical properties. CNTs are ideal basic materials to make nanometer gas sensors. Nanometallic materials function as to enhance electrode activity and promote the electron transfer, so if composite nanometallic materials M (such as Au, Pt, Cu and Pd) and CNTs are used, all kinds of their characters of components would have coeffect. Electrochemical sensors by use of such composite as electrode would have a higher detection sensitivity. Design/methodology/approach CNTs were synthesized via chemical vapor deposition technique and were purified afterward. CNTs-M(Pt,Au) suspension was prepared by chemical deposition using spinning disc processor (SDP) and was coated on gold electrode. The modified electrodes were constructed, based on immobilization of glucose oxidase on an Au electrode by electrostatic effect. CNTs-Pt/ glassy carbon electrodes (GCE) electrodes were made by electrochemically deposition of platinum particles on GCE modified by CNTs. The microstructures of the harvested CNTs, CNTs-M (M = Au, Pt) were analyzed under scanning electron microscopy and transmission electron microscopy. The application of the sensor in medical detection has been evaluated. Findings The results shown that CNTs-Au biosensors exhibit good reproducibility, stability and fast response to glucose detection, it can be used in the clinic detection of glucose concentration in human serum. Using CNTs-Pt/GCE for formaldehyde detection exhibited high sensitivity and good reproducibility. Originality/value This study modified CNTs by using self-assembled techniques through SDP with nano Pt and Au by electrodeposition for the first time. CNTs-Pt/GCE electrode was prepared by depositing platinum particles electrochemically on GCE modified by CNTs. CNTs-Au-modified electrode was prepared by immobilization of glucose oxidase on an Au electrode first by electrostatic effect. Electrochemical behaviors of glucose at CNTs-Au and formaldehyde at CNTs-Pt/GCE were investigated by cyclic voltammetry.
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来源期刊
Sensor Review
Sensor Review 工程技术-仪器仪表
CiteScore
3.40
自引率
6.20%
发文量
50
审稿时长
3.7 months
期刊介绍: Sensor Review publishes peer reviewed state-of-the-art articles and specially commissioned technology reviews. Each issue of this multidisciplinary journal includes high quality original content covering all aspects of sensors and their applications, and reflecting the most interesting and strategically important research and development activities from around the world. Because of this, readers can stay at the very forefront of high technology sensor developments. Emphasis is placed on detailed independent regular and review articles identifying the full range of sensors currently available for specific applications, as well as highlighting those areas of technology showing great potential for the future. The journal encourages authors to consider the practical and social implications of their articles. All articles undergo a rigorous double-blind peer review process which involves an initial assessment of suitability of an article for the journal followed by sending it to, at least two reviewers in the field if deemed suitable. Sensor Review’s coverage includes, but is not restricted to: Mechanical sensors – position, displacement, proximity, velocity, acceleration, vibration, force, torque, pressure, and flow sensors Electric and magnetic sensors – resistance, inductive, capacitive, piezoelectric, eddy-current, electromagnetic, photoelectric, and thermoelectric sensors Temperature sensors, infrared sensors, humidity sensors Optical, electro-optical and fibre-optic sensors and systems, photonic sensors Biosensors, wearable and implantable sensors and systems, immunosensors Gas and chemical sensors and systems, polymer sensors Acoustic and ultrasonic sensors Haptic sensors and devices Smart and intelligent sensors and systems Nanosensors, NEMS, MEMS, and BioMEMS Quantum sensors Sensor systems: sensor data fusion, signals, processing and interfacing, signal conditioning.
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