High-Linearity Hydrogen Peroxide Sensor Based on Nanoporous Gold Electrode

2019 ◽  
Vol 166 (10) ◽  
pp. B814-B820 ◽  
Author(s):  
Jinlei Huang ◽  
Xufei Fang ◽  
Xue Liu ◽  
Siyuan Lu ◽  
Shuxin Li ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Gold Electrode ◽  
Nanoporous Gold ◽  
High Linearity ◽  
Hydrogen Peroxide Sensor ◽  
Nanoporous Gold Electrode

Non-enzymatic hydrogen peroxide sensor based on a nanoporous gold electrode modified with platinum nanoparticles

2014 ◽  
Vol 68 (4) ◽  
Author(s):  
Guang Yin ◽  
Ling Xing ◽  
Xiu-Ju Ma ◽  
Jun Wan
Keyword(s):  
Hydrogen Peroxide ◽  
Platinum Nanoparticles ◽  
Gold Electrode ◽  
Electrochemical Sensors ◽  
Limit Of Detection ◽  
Pt Nanoparticles ◽  
Nanoporous Gold ◽  
Good Electrocatalytic Activity ◽  
Nanoporous Gold Electrode

AbstractA novel non-enzymatic electrochemical sensor based on a nanoporous gold electrode modified with platinum nanoparticles was constructed for the determination of hydrogen peroxide (H2O2). Platinum nanoparticles exhibit good electrocatalytic activity towards hydrogen peroxide. The nanoporous gold (NPG) increases the effective surface area and has the capacity to promote electron-transfer reactions. With electrodeposition of Pt nanoparticles (NPs) on the surface of the nanoporous gold, the modified Au electrode afforded a fast, sensitive and selective electrochemical method for the determination of H2O2. The linear range for the detection of H2O2 was from 1.0 × 10−7 M to 2.0 × 10−5 M while the calculated limit of detection was 7.2 × 10−8 M on the basis of the 3σ/slope (σ represents the standard deviation of the blank samples). These findings could lead to the widespread use of electrochemical sensors to detect H2O2.

Direct electrochemistry and bioelectrocatalysis of horseradish peroxidase entrapped in a self-supporting nanoporous gold electrode: a new strategy to improve the orientation of immobilized enzymes

2015 ◽  
Vol 7 (16) ◽  
pp. 6686-6694 ◽  
Author(s):  
Lu Lu ◽  
Yanjie Dong ◽  
Junwei Wang ◽  
Qianqian Li ◽  
Xia Wu
Keyword(s):  
Horseradish Peroxidase ◽  
Gold Electrode ◽  
Direct Electrochemistry ◽  
Immobilized Enzymes ◽  
Nanoporous Gold ◽  
New Strategy ◽  
Nanoporous Gold Electrode

In an air/water-stable IL, a self-supporting NPGE was first prepared for improving the orientation and biosensing ability of immobilized HRP.

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