Templating synthesis of hollow CuO polyhedron and its application for nonenzymatic glucose detection

2014 ◽  
Vol 2 (20) ◽  
pp. 7306-7312 ◽  
Author(s):  
Chuncai Kong ◽  
Linli Tang ◽  
Xiaozhe Zhang ◽  
Shaodong Sun ◽  
Shengchun Yang ◽  
...  
Keyword(s):  
Detection Limit ◽  
Modified Electrode ◽  
Glucose Sensor ◽  
High Sensitivity ◽  
Fast Response ◽  
Good Stability ◽  
Glucose Detection ◽  
Nonenzymatic Glucose Sensor ◽  
Oxidation Of Glucose ◽  
Templating Synthesis

In this paper, we successfully fabricated a novel type of a hollow CuO polyhedron that consists of numerous nanoplates using Cu2O as a template. The hollow CuO polyhedron-modified electrode exhibits high sensitivity, low detection limit, good stability and fast response towards the oxidation of glucose, suggesting it to be a promising nonenzymatic glucose sensor.

A comparative study of electrocatalytic oxidation of glucose on conductive Ni-MOF nanosheet arrays with different ligands

2020 ◽  
Vol 44 (41) ◽  
pp. 17849-17853
Author(s):  
Yanxia Qiao ◽  
Rui Zhang ◽  
Fangyuan He ◽  
Wenli Hu ◽  
Xiaowei Cao ◽  
...  
Keyword(s):  
Detection Limit ◽  
Comparative Study ◽  
Response Time ◽  
Electrocatalytic Oxidation ◽  
Glucose Sensor ◽  
High Sensitivity ◽  
Fast Response ◽  
Serum Samples ◽  
Nanosheet Arrays ◽  
Oxidation Of Glucose

A glucose sensor based on conductive Ni-MOF nanosheet arrays/CC exhibits a fast response time, a low detection limit, a high sensitivity, and it can also be applied for the detection of glucose in human serum samples.

Ni Hierarchical Structures Supported on Titania Nanowire Arrays as Efficient Nonenzymatic Glucose Sensor

2020 ◽  
Vol 20 (5) ◽  
pp. 3246-3251 ◽  
Author(s):  
Hai-Long Hu ◽  
Chuan He ◽  
Bao-Gang Guo ◽  
He-Yan Huang ◽  
Xing-Quan Zhang ◽  
...  
Keyword(s):  
Glucose Sensor ◽  
Low Cost ◽  
Hierarchical Structures ◽  
High Sensitivity ◽  
Fast Response ◽  
Nanowire Arrays ◽  
Nonenzymatic Glucose Sensor ◽  
Conductive Substrate ◽  
Nano Sensors ◽  
Oxidation Of Glucose

Developing new advanced nonenzymatic electrochemical nano-sensors for glucose detection has attracted intensive attraction. In this work, we designed a novel nanocomposite nonenzymatic glucose sensor by fabricating hierarchically nanostructured metal nickel on titania nanowire arrays, which was loaded on a transparent conductive substrate (i.e., fluorine-doped tin oxide, FTO) surface by mild hydrothermal method. Due to the large surface area of the hierarchically nanostructured Ni and fast electron transfer of the TiO2 nanowire arrays electrode, the nanocomposite electrode shows excellent electrochemical activity toward the oxidation of glucose. The electrode exhibits high sensitivity in detecting glucose concentration (1472 μA mM−1 cm−2) with a wide linear range from 2×10−4 M to 2×10−3 M, fast response time (within 5 s), and small detection limit (10 μM) (S/N = 3). The good analytical performance, low cost and simple preparation method make this novel electrode material promising for the development of effective glucose nonenzymatic glucose sensor.

scholarly journals High-performance non-enzymatic glucose detection: using a conductive Ni-MOF as an electrocatalyst

2020 ◽  
Vol 8 (25) ◽  
pp. 5411-5415 ◽  
Author(s):  
Yanxia Qiao ◽  
Qian Liu ◽  
Siyu Lu ◽  
Guang Chen ◽  
Shuyan Gao ◽  
...  
Keyword(s):  
Detection Limit ◽  
Response Time ◽  
Blood Serum ◽  
High Performance ◽  
Glucose Sensor ◽  
High Sensitivity ◽  
Fast Response ◽  
Glucose Detection ◽  
Serum Samples ◽  
Fast Response Time

A glucose sensor based on a conductive Ni-MOF as an electrocatalyst exhibits a fast response time, low detection limit, and high sensitivity, and it can also be applied for the detection of glucose in blood serum samples.

Cuprous Oxide Films with Hollow Cubic Cage Structure for Nonenzymatic Glucose Detection

NANO ◽  
2019 ◽  
Vol 14 (04) ◽  
pp. 1950045
Author(s):  
Fang Sun ◽  
Lehong Xing ◽  
Xihui Yang ◽  
Hailiang Huang ◽  
Lina Ning
Keyword(s):  
Electrode Materials ◽  
Glucose Sensor ◽  
High Sensitivity ◽  
Fast Response ◽  
Glucose Sensing ◽  
Glucose Sensors ◽  
Cage Structure ◽  
Active Materials ◽  
Nonenzymatic Glucose Sensor ◽  
Step Procedure

In this study, CuO films with hollow cubic cages were prepared by a facile two-step procedure consisting of electrodeposition synthesis and subsequent direct calcination. First, Cu2O nanocubes were fabricated on ITO substrate through a simple electrodeposition procedure. Then, Cu2O nanocubes were converted to CuO hollow cubic cages without obvious morphological change through direct calcination. The obtained CuO cubic cages serving as active materials illustrated a favorable performance for nonenzymatic glucose sensing with high sensitivity of [Formula: see text]A[Formula: see text]mM[Formula: see text][Formula: see text]cm[Formula: see text] at a low applied potential of 0.50[Formula: see text]V, fast-response time (less than 3[Formula: see text]s), low detection limit of 1.0[Formula: see text][Formula: see text]M and wide linear range up from 2.0[Formula: see text][Formula: see text]M to 1.0[Formula: see text]mM ([Formula: see text]). Moreover, the good selectivity of the CuO cubic cages-based nonenzymatic glucose sensor against electroactive compounds such as ascorbic acid, uric acid and dopamine were also demonstrated. These good features indicate that the as-prepared CuO cubic cages can be used as promising electrode materials, which have a great potential in the development of sensitive and selective nonenzymatic glucose sensors.

scholarly journals Nanostructured copper selenide as an ultrasensitive and selective non-enzymatic glucose sensor

2021 ◽  
Author(s):  
Siddesh Umapathi ◽  
Harish Singh ◽  
Jahangir Masud ◽  
Manashi Nath
Keyword(s):  
Detection Limit ◽  
High Efficiency ◽  
Glucose Sensor ◽  
High Sensitivity ◽  
Copper Selenide ◽  
Glucose Detection ◽  
Applied Potential ◽  
Detection Range ◽  
Low Detection Limit ◽  
Linear Detection

CuSe nanostructures exhibit high-efficiency for glucose detection with high sensitivity (19.419 mA mM−1 cm−2) and selectivity at low applied potential (0.15 V vs. Ag|AgCl), low detection limit (0.196 μM) and linear detection range (100 nM to 40 μM).

Graphene Nanostructures as Nonenzymatic Glucose Sensor

2021 ◽  
pp. 157-196
Keyword(s):  
Quantitative Analysis ◽  
Detection Limit ◽  
Glucose Sensor ◽  
Electrochemical Sensors ◽  
High Sensitivity ◽  
Glucose Sensors ◽  
Nonenzymatic Glucose Sensor ◽  
Industrial Sectors ◽  
Electrochemically Active ◽  
Increasing Demand

The increasing demand for the development of highly selective and sensitive nonenzymatic electrochemical sensors for the qualitative and quantitative analysis of glucose in pharmaceutical, clinical and industrial sectors has gained enormous attention towards the use of graphene and its derivatives. This chapter describes the efficient development of electrochemically active nonenzymatic glucose sensors using graphene and its composites, achieving high sensitivity, stability, low detection limit, wide linear range and reproducibility.

scholarly journals Direct Growth of Copper Oxide Films on Ti Substrate for Nonenzymatic Glucose Sensors

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Xiaoxu Ji ◽  
Aihua Wang ◽  
Qinghuai Zhao
Keyword(s):  
Copper Oxide ◽  
Glucose Sensor ◽  
Low Cost ◽  
High Sensitivity ◽  
Fast Response ◽  
Glucose Sensors ◽  
Electrochemical Performances ◽  
Nonenzymatic Glucose Sensor ◽  
Long Term Stability ◽  
Direct Growth

Copper oxide (CuO) films directly grown on Ti substrate have been successfully prepared via a hydrothermal method and used to construct an amperometric nonenzymatic glucose sensor. XRD and SEM were used to characterize the samples. The electrochemical performances of the electrode for detection of glucose were investigated by cyclic voltammetry and chronoamperometry. The CuO films based glucose sensors exhibit enhanced electrocatalytic properties which show very high sensitivity (726.9 μA mM−1 cm−2), low detection limit (2 μM), and fast response (2 s). In addition, reproducibility and long-term stability have been observed. Low cost, convenience, and biocompatibility make the CuO films directly grown on Ti substrate electrodes a promising platform for amperometric nonenzymatic glucose sensor.

scholarly journals Cu-Based Conductive MOF Grown in situ on Cu Foam as a Highly Selective and Stable Non-Enzymatic Glucose Sensor

2021 ◽  
Vol 9 ◽  
Author(s):  
Qin Hu ◽  
Jie Qin ◽  
Xiao-Feng Wang ◽  
Guang-Ying Ran ◽  
Qiang Wang ◽  
...  
Keyword(s):  
Detection Limit ◽  
Glucose Sensor ◽  
Electrochemical Sensors ◽  
Hydrothermal Reaction ◽  
Metal Organic Framework ◽  
Copper Acetate ◽  
Fast Response ◽  
Glucose Detection ◽  
Low Detection Limit ◽  
Cu Foam

A non-enzymatic electrochemical sensor for glucose detection is executed by using a conductive metal–organic framework (MOF) Cu-MOF, which is built from the 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP) ligand and copper acetate by hydrothermal reaction. The Cu-MOF demonstrates superior electrocatalytic activity for glucose oxidation under alkaline pH conditions. As an excellent non-enzymatic sensor, the Cu-MOF grown on Cu foam (Cu-MOF/CF) displays an ultra-low detection limit of 0.076 μM through a wide concentration range (0.001–0.95 mM) and a strong sensitivity of 30,030 mA μM−1 cm−2. Overall, the Cu-MOF/CF exhibits a low detection limit, high selectivity, excellent stability, fast response time, and good practical application feasibility for glucose detection and can promote the development of MOF materials in the field of electrochemical sensors.

Design of Photoionization Detector Based on the Miniature Gas Chromatography

2013 ◽  
Vol 823 ◽  
pp. 291-295 ◽  
Author(s):  
Shou Chen Chai ◽  
Peng Yang ◽  
Cheng Jia Yang ◽  
Chun Li Cai ◽  
Na Yu
Keyword(s):  
Gas Chromatography ◽  
Detection Limit ◽  
Ionization Chamber ◽  
High Sensitivity ◽  
Fast Response ◽  
Low Detection Limit ◽  
Photoionization Detector ◽  
Key Factor ◽  
The Stability ◽  
Sensitivity Detection

In the space restricted airtight environment that people lives in, detecting harmful gas by miniature gas chromatography is the practical requirement at present, however, PIDs performance is key factor that restrict the application of miniature gas chromatography, the redesign of the detectors gas route in this paper aiming at improve detectors stability observably, and schemed out miniature PID with high sensitivity, low detection limit and fast response. The result of the experiment shows that the detection limit is 0.04ppm, the sensitivity is 101mv/ppm,the stability is 0.04×10-6/24h,meeting the project requirement. Keywords: photoionization detector; ionization chamber; sensitivity; detection limit;

An Electrochemically Reduced Copper/Reduced Graphene Oxide Film Modified Electrode for Sensitive Non-Enzymatic Glucose Detection in Human Serum

2021 ◽  
Author(s):  
Sopit Phetsang ◽  
Pinit Kidkhunthod ◽  
Narong Chanlek ◽  
Jaroon Jakmunee ◽  
Pitchaya Mungkornasawakul ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Human Serum ◽  
Reduced Graphene Oxide ◽  
Modified Electrode ◽  
Electrocatalytic Activity ◽  
Glucose Sensor ◽  
Electrochemical Sensors ◽  
High Sensitivity ◽  
Detection Range ◽  
Reduced Graphene

Abstract Numerous studies suggest that modification with functional nanomaterials can enhance the electrode electrocatalytic activity, sensitivity, and selectivity of the electrochemical sensors. Here, a highly sensitive and cost-effective disposable non-enzymatic glucose sensor based on copper(II)/reduced graphene oxide modified screen-printed carbon electrode is demonstrated. Facile fabrication of the developed sensing electrodes is carried out by the adsorption of copper(II) onto graphene oxide modified electrode, then following the electrochemical reduction. The proposed sensor illustrates good electrocatalytic activity toward glucose oxidation with a wide linear detection range from 0.10 mM to 12.5 mM, low detection limit of 65 µM, and high sensitivity of 172 µA mM− 1 cm− 2 along with satisfactory anti-interference ability, reproducibility, stability, and the acceptable recoveries for the detection of glucose in a human serum sample (95.6–106.4%). The copper(II)/reduced graphene oxide based sensor with the superior performances is a great potential for the quantitation of glucose in real samples.

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