Electrospinning of highly dispersed Ni/CoO carbon nanofiber and its application in glucose electrochemical sensor

Nanofibers or nanofibrous membranes prepared by electrospinning possess many attractive properties, including excellent mechanical properties, high specific surface area and high porosity, making them attractive for sensor application, especially for the electrochemical sensors. Many nanomaterials are used as additives to improve the conductivity, sensitivity and selectivity of sensors. Based on the different modifiers of electrode materials, electrochemical sensors can be divided into enzyme sensors and non-enzyme sensors. In this review, we summarize the recent progress of the electrochemical sensors fabricated by electrospinning, including hydrogen peroxide (H2O2) sensors, glucose sensors and other sensors. In addition, the sensing mechanisms of various electrochemical sensors are introduced in detail. Finally, future research directions of electrochemical sensors based on electrospinning and the challenges faced by large-scale applications of electrospun electrochemical sensors are presented.

Section: Non-enzyme Electrochemical Sensorsmentioning

confidence: 99%

Electrochemical Sensors Fabricated by Electrospinning Technology: An Overview

Chen

Chou

Liu

et al. 2019

“…Electricity spinning nanofibers are served as the sensing elements of sensors directly. Mei et al prepared CNFs loaded with nickl(Ni)/cobaltous oxide (CoO) NPs by electrospinning, and used the anion surfactant equilibrium adsorption method to make the NPs grow uniformly in situ on the CNFs [95]. As shown in Figure 5a, by adjusting and comparing experimental conditions, such as applied potential and solution concentration, they obtained the composite with the best performance.…”

Section: Sensor Applications Of Electrospun Np-based Materials Intementioning

confidence: 99%

“…Electrospun NP interfaces for electrochemical sensors: ( a ) Experiment process and mechanism of carbon nanofibers (CNFs) loaded with nickel (Ni)/cobaltous oxide (CoO) NPs [95], copyright 2019 Elsevier Ltd; ( b ) preparation and sensing principle of platinum-nickel alloy(PtNi)/cerium oxide(CeO 2 )/n-doped carbon nanofibers(NCNFs) [63], copyright 2019 Elsevier Ltd.…”

Section: Figurementioning

confidence: 99%

Electrospinning Nanoparticles-Based Materials Interfaces for Sensor Applications

Zhang

Jia

Liu

et al. 2019

Electrospinning is a facile technique to fabricate nanofibrous materials with adjustable structure, property, and functions. Electrospun materials have exhibited wide applications in the fields of materials science, biomedicine, tissue engineering, energy storage, environmental science, sensing, and others. In this review, we present recent advance in the fabrication of nanoparticles (NPs)-based materials interfaces through electrospinning technique and their applications for high-performance sensors. To achieve this aim, first the strategies for fabricating various materials interfaces through electrospinning NPs, such as metallic, oxide, alloy/metal oxide, and carbon NPs, are demonstrated and discussed, and then the sensor applications of the fabricated NPs-based materials interfaces in electrochemical, electric, fluorescent, colorimetric, surface-enhanced Raman scattering, photoelectric, and chemoresistance-based sensing and detection are presented and discussed in detail. We believe that this study will be helpful for readers to understand the fabrication of functional materials interfaces by electrospinning, and at the same time will promote the design and fabrication of electrospun nano/micro-devices for wider applications in bioanalysis and label-free sensors.

“…Compared to graphene and carbon nanotubes, carbon (nano)fibres are usually amorphous with randomly distributed graphite micro-crystallites and a distorted graphite layer. They contain many voids, allowing easy surface and structure modifications to create versatile materials with a wide range of functionalities and applications, such as sensors, energy storage, electronics, catalysts and separation membranes [ 10 , 11 , 12 , 13 ]. Our previous research results also suggest that the fibrous structure of nanofibres is beneficial for high performance humidity sensing [ 1 ].…”

Section: Introductionmentioning

confidence: 99%

“…However, both methods are relatively slow processes (at least several hours) and require either high temperature or high pressure [ 28 ]. Furthermore, to control the nano/micro structure of carbonised lignin fibres for better performance, post-treatments, such as doping and modification, are needed in most cases [ 11 , 13 , 29 ]. Therefore, it is highly desirable to develop rapid carbonisation technologies with controllable micro/nano structures that are also scalable, low-cost and easy to operate [ 30 , 31 ].…”

Section: Introductionmentioning

confidence: 99%

Rapid Fabrication of Renewable Carbon Fibres by Plasma Arc Discharge and Their Humidity Sensing Properties

Chen

Fang

Abbel

et al. 2021

Submicron-sized carbon fibres have been attracting research interest due to their outstanding mechanical and electrical properties. However, the non-renewable resources and their complex fabrication processes limit the scalability and pose difficulties for the utilisation of these materials. Here, we investigate the use of plasma arc technology to convert renewable electrospun lignin fibres into a new kind of carbon fibre with a globular and porous microstructure. The influence of arc currents (up to 60 A) on the structural and morphological properties of as-prepared carbon fibres is discussed. Owing to the catalyst-free synthesis, high purity micro-structured carbon fibres with nanocrystalline graphitic domains are produced. Furthermore, the humidity sensing characteristics of the treated fibres at room temperature (23 °C) are demonstrated. Sensors produced from these carbon fibres exhibit good humidity response and repeatability in the range of 30% to 80% relative humidity (RH) and an excellent sensitivity (0.81/%RH) in the high RH regime (60–80%). These results demonstrate that the plasma arc technology has great potential for the development of sustainable, lignin-based carbon fibres for a broad range of application in electronics, sensors and energy storage.