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.

A Novel Colorimetric Sensor for Selective Sensing of Cu (II) in Aqueous Media

2012 ◽  
Vol 549 ◽  
pp. 615-619
Author(s):  
Wei Yu ◽  
Xin Zhou ◽  
Ying Ai Piao ◽  
Xue Wu
Keyword(s):  
Analytical Method ◽  
Copper Content ◽  
Color Change ◽  
Aqueous Media ◽  
Colorimetric Sensor ◽  
Dmso Solution ◽  
Aqueous Dmso ◽  
Actual Sample

A novel colorimetric sensor based on BMPA derivative was designed and synthesized. The sensor displayed high selective and sensitive recognition of Cu2+in aqueous DMSO solution via an obvious color change from yellow to pink. The color change can be attribute to form a complex with Cu2+with C=O and N-H bonds. Based on this principle, an analytical method was developed and successfully used in the determination of the copper content in actual sample.

Determination of ascorbic acid using an electrode modified with cysteine self-assembled gold-platinum nanoparticles

2011 ◽  
Vol 175 (3-4) ◽  
pp. 259-264 ◽  
Author(s):  
Yuanyuan Lin ◽  
Yanling Hu ◽  
Yumei Long ◽  
Junwei Di
Keyword(s):  
Ascorbic Acid ◽  
Platinum Nanoparticles ◽  
Self Assembled ◽  
Gold Platinum

Disposable biosensor based on platinum nanoparticles-reduced graphene oxide-laccase biocomposite for the determination of total polyphenolic content

Talanta ◽  
2013 ◽  
Vol 110 ◽  
pp. 164-170 ◽  
Author(s):  
Sandra A.V. Eremia ◽  
Ioana Vasilescu ◽  
Antonio Radoi ◽  
Simona-Carmen Litescu ◽  
Gabriel-Lucian Radu
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Platinum Nanoparticles ◽  
Reduced Graphene ◽  
Polyphenolic Content ◽  
Total Polyphenolic Content

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.

Indirect Determination of Pentaerythritol Tetranitrate (PETN) with a gold nanoparticles−based colorimetric sensor

Talanta ◽  
2017 ◽  
Vol 175 ◽  
pp. 243-249 ◽  
Author(s):  
Ayşem Üzer ◽  
Uğur Yalçın ◽  
Ziya Can ◽  
Erol Erçağ ◽  
Reşat Apak
Keyword(s):  
Gold Nanoparticles ◽  
Colorimetric Sensor ◽  
Pentaerythritol Tetranitrate ◽  
Indirect Determination
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