A high-energy sandwich-type self-powered biosensor based on DNA bioconjugates and a nitrogen doped ultra-thin carbon shell

2020 ◽  
Vol 8 (7) ◽  
pp. 1389-1395 ◽  
Author(s):  
Fu-Ting Wang ◽  
Yi-Han Wang ◽  
Jing Xu ◽  
Ke-Jing Huang
Keyword(s):  
Signal Amplification ◽  
High Energy ◽  
Biofuel Cells ◽  
Ultrasensitive Detection ◽  
Nitrogen Doped ◽  
Sensing Platform ◽  
Enzymatic Biofuel Cells ◽  
Thin Carbon ◽  
Sandwich Type ◽  
Self Powered

A high-energy self-powered sensing platform for the ultrasensitive detection of proteins is developed based on enzymatic biofuel cells (EBFCs) by using DNA bioconjugate assisted signal amplification.

Integration of a Capacitor to 3-D DNA Walker and Biofuel Cell-Based Self-Powered System for Ultrasensitive Bioassays of MicroRNA

Nanoscale ◽  
2021 ◽  
Author(s):  
Fu-Ting Wang ◽  
Ke-Jing Huang ◽  
Yangyang Hou ◽  
Xuecai Tan ◽  
Xu Wu ◽  
...  
Keyword(s):  
Signal Amplification ◽  
Three Dimensional ◽  
Biofuel Cells ◽  
Biofuel Cell ◽  
Dna Walker ◽  
Enzymatic Biofuel Cells ◽  
Self Powered

A self-powered microRNAs biosensor with triple signal amplification systems is assembled through integration of three-dimensional DNA walker, enzymatic biofuel cells and capacitor. The DNA walker is designed from an enzyme-free...

Ultrasensitive detection of NDM-1 resistant bacteria based on signal amplification with sandwich-type LNA electrochemical biochips

2020 ◽  
Vol 306 ◽  
pp. 127556
Author(s):  
Liqun Zhang ◽  
Wenbin Liang ◽  
Qiaosheng Ran ◽  
Fei Liu ◽  
Dong Chen ◽  
...  
Keyword(s):  
Signal Amplification ◽  
Resistant Bacteria ◽  
Ultrasensitive Detection ◽  
Sandwich Type

scholarly journals Ethanol Biofuel Cells: Hybrid Catalytic Cascades as a Tool for Biosensor Devices

Biosensors ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 41
Author(s):  
Jefferson Honorio Franco ◽  
Shelley D. Minteer ◽  
Adalgisa R. De Andrade
Keyword(s):  
Alternative Energy ◽  
High Performance ◽  
Electronic Conductivity ◽  
Analytical Techniques ◽  
Electrical Energy ◽  
Biofuel Cells ◽  
Enzymatic Biofuel Cells ◽  
External Power Source ◽  
Potential Applications ◽  
Self Powered

Biofuel cells use chemical reactions and biological catalysts (enzymes or microorganisms) to produce electrical energy, providing clean and renewable energy. Enzymatic biofuel cells (EBFCs) have promising characteristics and potential applications as an alternative energy source for low-power electronic devices. Over the last decade, researchers have focused on enhancing the electrocatalytic activity of biosystems and on increasing energy generation and electronic conductivity. Self-powered biosensors can use EBFCs while eliminating the need for an external power source. This review details improvements in EBFC and catalyst arrangements that will help to achieve complete substrate oxidation and to increase the number of collected electrons. It also describes how analytical techniques can be employed to follow the intermediates between the enzymes within the enzymatic cascade. We aim to demonstrate how a high-performance self-powered sensor design based on EBFCs developed for ethanol detection can be adapted and implemented in power devices for biosensing applications.

scholarly journals Nitrogen-Doped and Carbon-Coated Activated Carbon as a Conductivity Additive-Free Electrode for Supercapacitors

Energies ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7629
Author(s):  
Su-Jin Jang ◽  
Jeong Han Lee ◽  
Seo Hui Kang ◽  
Yun Chan Kang ◽  
Kwang Chul Roh
Keyword(s):  
Activated Carbon ◽  
High Current Density ◽  
High Energy ◽  
High Rate ◽  
High Energy Density ◽  
One Pot ◽  
Nitrogen Doped ◽  
Conductive Additive ◽  
Thin Carbon ◽  
Carbon Coated

The development of supercapacitors with high volumetric capacitance and high-rate performance has been an important research topic. Activated carbon (AC), which is a widely used material for supercapacitor electrodes, has different surface structures, porosities, and electrochemical properties. However, the low conductivity of the electrode material is a major problem for the efficient use of AC in supercapacitors. To tackle this challenge, we prepared conductive, additive-free electrodes for supercapacitors by a simple one-pot treatment of AC with melamine (nitrogen source), pitch, and sucrose (both carbon source). Nitrogen-doped and carbon-coated AC was successfully generated after high-temperature heat treatment. The AC was doped with approximately 0.5 at.% nitrogen, and coated with carbon leading to a decreased oxygen content. Thin carbon layers (~10 nm) were coated onto the outer surface of the AC, as shown in TEM images. The modification of the AC surface with a sucrose source is favorable, as it increases the electrical conductivity of AC up to 3.0 S cm−1, which is 4.3 times higher than in unmodified AC. The electrochemical performance of the modified AC was evaluated by conducting agent-free electrode. Although the obtained samples had slightly reduced surface areas after the surface modification, they maintained a high specific surface area of 1700 m2 g−1. The supercapacitor delivered a specific capacitance of 70.4 F cc−1 at 1 mA cm−1 and achieved 89.8% capacitance retention even at a high current density of 50 mA cm−2. Furthermore, the supercapacitor delivered a high energy density of 24.5 Wh kg−1 at a power density of 4650 W kg−1. This approach can be extended for a new strategy for conductivity additive-free electrodes in, e.g., supercapacitors, batteries, and fuel cells.

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