Intrinsic polyphenol oxidase-like activity of gold@platinum nanoparticles

RSC Advances ◽  
2015 ◽  
Vol 5 (78) ◽  
pp. 63757-63764 ◽  
Author(s):  
Jo-Won Lee ◽  
Sohee Yoon ◽  
Y. Martin Lo ◽  
Haohao Wu ◽  
Sook-Young Lee ◽  
...  
Keyword(s):  
Polyphenol Oxidase ◽  
Platinum Nanoparticles ◽  
Gold Platinum

Au@Pt NPs showed PPO mimetic activity over a wider range of pH and temperatures compared to PPO. In the oxidation of all substrates, Au@Pt NPs exhibited higher affinity to the substrates, especially to catechol and pyrogallol, compared with PPO.

A colorimetric sensor for detecting thiourea based on inhibiting peroxidase-like activity of gold–platinum nanoparticles

2021 ◽  
Author(s):  
Yuqi Zhao ◽  
Qingjie Fu ◽  
Xiaoqian Cui ◽  
Hui Chi ◽  
Yongzhuang Lu ◽  
...  
Keyword(s):  
Platinum Nanoparticles ◽  
Color Change ◽  
Colorimetric Sensor ◽  
Gold Platinum

The sensor is based on the peroxidase-like activity of Au@PtNPs. Thiourea can quickly be detected by the color change of the solution. The method was applied to the determination of thiourea in practical samples.

Fabrication of Nano Particles on Vertically Aligned Multi-Wall Carbon Nanotubes by E-Beam Evaporation

2008 ◽  
Vol 47-50 ◽  
pp. 1526-1531
Author(s):  
Tung Feng Hsieh ◽  
Chia Chih Chuang ◽  
Yu Chuan Chou ◽  
Chi Min Shu
Keyword(s):  
Platinum Nanoparticles ◽  
Electron Beam Evaporation ◽  
Nano Particles ◽  
High Electron ◽  
Composite Electrodes ◽  
Energy Storage Devices ◽  
Multi Wall Carbon Nanotubes ◽  
Surface Areas ◽  
Vertically Aligned ◽  
Gold Platinum

A novel composite electrode-containing gold/platinum nanoparticles on the vertically aligned multi-wall nanotubes (MWCNTs) by electron beam evaporation (e-beam evaporation) is reported herein. The gold/platinum nanoparticles were less than 10 nm, and distributed uniformly on the surface of vertically aligned MWCNTs under the control of e-beam evaporation. The composite electrodes could be applied in the field of biomedical sensor and energy storage devices. This process was straightforward and contained high specific surface areas of gold/platinum nanoparticles on the MWCNTs. It was helpful to enhance the efficiency of organic fuel decomposition as well as advance the sensor precision. In addition, the nanoparticles on the MWCNTs could also facilitate the high electron mobility and chemical stability.

scholarly journals Nanocrystal and surface alloy properties of bimetallic Gold-Platinum nanoparticles

2006 ◽  
Vol 2 (1) ◽  
pp. 12-16 ◽  
Author(s):  
Derrick Mott ◽  
Jin Luo ◽  
Andrew Smith ◽  
Peter N. Njoki ◽  
Lingyan Wang ◽  
...  
Keyword(s):  
Platinum Nanoparticles ◽  
Surface Alloy ◽  
Alloy Properties ◽  
Gold Platinum

Characterization of binary gold/platinum nanoparticles prepared by sonochemistry technique

2005 ◽  
Vol 241 (1-2) ◽  
pp. 209-212 ◽  
Author(s):  
M. Nakanishi ◽  
H. Takatani ◽  
Y. Kobayashi ◽  
F. Hori ◽  
R. Taniguchi ◽  
...  
Keyword(s):  
Platinum Nanoparticles ◽  
Gold Platinum

Phase Properties of Carbon-Supported Gold−Platinum Nanoparticles with Different Bimetallic Compositions

2005 ◽  
Vol 17 (12) ◽  
pp. 3086-3091 ◽  
Author(s):  
Jin Luo ◽  
Mathew M. Maye ◽  
Valeri Petkov ◽  
Nancy N. Kariuki ◽  
Lingyan Wang ◽  
...  
Keyword(s):  
Platinum Nanoparticles ◽  
Supported Gold ◽  
Phase Properties ◽  
Gold Platinum
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