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).

Non-enzymatic amperometric sensing of glucose by employing sucrose templated microspheres of copper oxide (CuO)

2016 ◽  
Vol 45 (13) ◽  
pp. 5833-5840 ◽  
Author(s):  
Mohit Saraf ◽  
Kaushik Natarajan ◽  
Shaikh M. Mobin
Keyword(s):  
Detection Limit ◽  
Copper Oxide ◽  
Glucose Sensor ◽  
Hydrothermal Reaction ◽  
Copper Nitrate ◽  
Good Sensitivity ◽  
Detection Range ◽  
Low Detection Limit ◽  
Linear Detection ◽  
Amperometric Sensing

An enzymeless glucose sensor (MCSPE) based on copper oxide microspheres (CMS) prepared by hydrothermal reaction of copper nitrate and sucrose, can sense glucose in a wide linear detection range with good sensitivity and low detection limit.

scholarly journals Marine Toxins Detection by Biosensors Based on Aptamers

Toxins ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 1 ◽  
Author(s):  
Wei Ye ◽  
Taomei Liu ◽  
Weimin Zhang ◽  
Muzi Zhu ◽  
Zhaoming Liu ◽  
...  
Keyword(s):  
Detection Limit ◽  
Sensitivity And Specificity ◽  
High Efficiency ◽  
Rapid Development ◽  
High Sensitivity ◽  
Detection Methods ◽  
Marine Toxins ◽  
Time Saving ◽  
Low Detection Limit ◽  
The Future

Marine toxins cause great harm to human health through seafood, therefore, it is urgent to exploit new marine toxins detection methods with the merits of high sensitivity and specificity, low detection limit, convenience, and high efficiency. Aptasensors have emerged to replace classical detection methods for marine toxins detection. The rapid development of molecular biological approaches, sequencing technology, material science, electronics and chemical science boost the preparation and application of aptasensors. Taken together, the aptamer-based biosensors would be the best candidate for detection of the marine toxins with the merits of high sensitivity and specificity, convenience, time-saving, relatively low cost, extremely low detection limit, and high throughput, which have reduced the detection limit of marine toxins from nM to fM. This article reviews the detection of marine toxins by aptamer-based biosensors, as well as the selection approach for the systematic evolution of ligands by exponential enrichment (SELEX), the aptamer sequences. Moreover, the newest aptasensors and the future prospective are also discussed, which would provide thereotical basis for the future development of marine toxins detection by aptasensors.

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.

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.

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.

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.

Cobalt functionalized MoS2/carbon nanotubes scaffold for enzyme-free glucose detection with extremely low detection limit

2019 ◽  
Vol 293 ◽  
pp. 122-128 ◽  
Author(s):  
Xiao Li ◽  
Kaibing Ren ◽  
Man Zhang ◽  
Wen Sang ◽  
Dongke Sun ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Detection Limit ◽  
Glucose Detection ◽  
Low Detection Limit ◽  
Free Glucose
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