A ternary nanocomposite electrode of polyoxometalate/carbon nanotubes/gold nanoparticles for electrochemical detection of hydrogen peroxide

The Analyst ◽  
2015 ◽  
Vol 140 (3) ◽  
pp. 820-826 ◽  
Author(s):  
Shuyue Guo ◽  
Lin Xu ◽  
Bingbing Xu ◽  
Zhixia Sun ◽  
Lihao Wang
Keyword(s):  
Carbon Nanotubes ◽  
Hydrogen Peroxide ◽  
Gold Nanoparticles ◽  
Electrochemical Detection ◽  
Self Assembly ◽  
Nanocomposite Film ◽  
Au Nanoparticles ◽  
Layer By Layer ◽  
Film Electrode ◽  
Assembly Technique

In this work, a nanocomposite film electrode containing polyoxometalate (POM) clusters K6P2W18O62 (P2W18), carbon nanotubes (CNTs) and Au nanoparticles (AuNPs) was fabricated by a layer-by-layer self-assembly technique.

Layer-by-layer self-assembly of 2D graphene nanosheets, 3D copper oxide nanoflowers and 0D gold nanoparticles for ultrasensitive electrochemical detection of alpha fetoprotein

RSC Advances ◽  
2015 ◽  
Vol 5 (70) ◽  
pp. 56583-56589 ◽  
Author(s):  
Yulan Wang ◽  
Dan Wu ◽  
Yong Zhang ◽  
Xiang Ren ◽  
Yaoguang Wang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Copper Oxide ◽  
Electrochemical Detection ◽  
Self Assembly ◽  
Graphene Nanosheets ◽  
Electrochemical Immunosensor ◽  
Alpha Fetoprotein ◽  
Quantitative Detection ◽  
Layer By Layer ◽  
Label Free

In this work, a novel and ultrasensitive label-free electrochemical immunosensor was developed for the quantitative detection of alpha fetoprotein (AFP).

Controllable assembly of well-defined monodisperse Au nanoparticles on hierarchical ZnO microspheres for enhanced visible-light-driven photocatalytic and antibacterial activity

Nanoscale ◽  
2015 ◽  
Vol 7 (45) ◽  
pp. 19118-19128 ◽  
Author(s):  
Yuan Wang ◽  
Hua-Bin Fang ◽  
Yan-Zhen Zheng ◽  
Rongqin Ye ◽  
Xia Tao ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Visible Light ◽  
Self Assembly ◽  
Au Nanoparticles ◽  
Layer By Layer ◽  
Visible Light Driven ◽  
Assembly Technique

An excellent visible-light-driven photocatalyst composed of well-defined monodisperse Au nanoparticles on ZnO microspheres via a layer-by-layer self-assembly technique is demonstrated.

A Simple Hydrogen Peroxide Biosensor Based on Catalase Immobilized in Nano-Structural Composite Film

2013 ◽  
Vol 704 ◽  
pp. 258-263
Author(s):  
Zhao Hao Wang ◽  
Han Cui ◽  
Qi Jin Wan ◽  
Nian Jun Yang
Keyword(s):  
Hydrogen Peroxide ◽  
Electron Transfer ◽  
Detection Limit ◽  
Self Assembly ◽  
Nanocomposite Film ◽  
Gold Electrode ◽  
Multilayer Film ◽  
Au Nanoparticles ◽  
Direct Electron Transfer ◽  
Structural Composite

A robust and effective nanocomposite film modified gold electrode based on 2, 3-dimercaptosuccinic acid (DMSA) and Au nanoparticles (AuNPs) was prepared by a method combining self-assembly with underpotential deposition. Direct electron transfer can easily take place between a gold electrode and catalase molecules anchored on AuNPs films. Besides, the CAT/AuNPs/DMSA multilayer film had a relatively rapid and satisfactory response toward H2O2 with a wide linear range from 3.0×106 to 5.86×103 M and a low detection limit of 3.0 μM (S/N = 3). The Michaelis-Menten constant of the immobilized CAT was calculated to be 2.2 mM. The simple CAT/AuNPs/DMSA/Au system can be developed into a H2O2 biosensor.

An electrochemical bifunctional sensor for the detection of nitrite and hydrogen peroxide based on layer-by-layer multilayer films of cationic phthalocyanine cobalt(ii) and carbon nanotubes

2016 ◽  
Vol 4 (7) ◽  
pp. 1310-1317 ◽  
Author(s):  
Jialin Zhang ◽  
Zhimin Chen ◽  
Hao Wu ◽  
Feng Wu ◽  
Chunying He ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Hydrogen Peroxide ◽  
Electrochemical Detection ◽  
Multilayer Films ◽  
Layer By Layer ◽  
Electrostatic Assembly ◽  
Binder Free

Binder-free multilayer films composed of phthalocyanine and carbon nanotubes were constructed by the layer-by-layer electrostatic assembly and applied for the electrochemical detection of NO2− and H2O2.

scholarly journals A High-Resolution Amperometric Acetylcholine Sensor Based on Nano-Assembled Carbon Nanotube and Acetylcholinesterase Thin Films

2008 ◽  
Vol 1 ◽  
pp. 1-9 ◽  
Author(s):  
Wei Xue ◽  
Tianhong Cui
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
High Resolution ◽  
Self Assembly ◽  
Low Cost ◽  
Fast Response ◽  
Time Measurement ◽  
Layer By Layer ◽  
Real Time Measurement ◽  
Assembly Technique

We demonstrate a carbon nanotube based high-resolution biosensor for acetylcholine sensing. Carbon nanotubes are deposited on a silicon wafer in a repeated fashion with layer-by-layer nano self-assembly technique. With nano-assembled acetylcholinesterase molecules on the surface, the carbon nanotube biosensor is capable of detecting acetylcholine at an ultra-low concentration of 100 pM. The sensitivity of the acetylcholine sensor is measured as 7.2 µA/decade. The real-time measurement shows the response time of the biosensor is approximately 6 sec. Both the carbon nanotube film and the acetylcholinesterase film are crucial in the sensing process. Due to its high resolution, fast response, small size, and low cost, the carbon nanotube biosensor has tremendous potential for applications in medical research and clinical diagnosis.

Multilayer composite beads constructed via layer-by-layer self-assembly for lysozyme controlled release

RSC Advances ◽  
2014 ◽  
Vol 4 (46) ◽  
pp. 24369-24376 ◽  
Author(s):  
Jiemin Zhao ◽  
Xiaoping Wang ◽  
Yanshen Kuang ◽  
Yufeng Zhang ◽  
Xiaowen Shi ◽  
...  
Keyword(s):  
Controlled Release ◽  
Self Assembly ◽  
Cross Linking ◽  
Layer By Layer ◽  
Multilayer Composite ◽  
Composite Beads ◽  
Assembly Technique ◽  
Positively Charged

Alginate (ALG)–lysozyme (LZ) beads were fabricated by a cross-linking process. Negatively charged ALG and positively charged LZ were alternately deposited on the positively charged ALG–LZ beads via a layer-by-layer (LBL) self-assembly technique.

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