Gold–Platinum Bimetallic Nanoclusters for Oxidase-like Catalysis

2020 ◽  
Vol 3 (9) ◽  
pp. 9318-9328
Author(s):  
Chun-Xia Zhang ◽  
Yan-Cai Gao ◽  
Hong-Wei Li ◽  
Yuqing Wu
Keyword(s):  
Bimetallic Nanoclusters ◽  
Gold Platinum

Gold–platinum bimetallic nanoclusters with enhanced peroxidase-like activity and their integrated agarose hydrogel-based sensing platform for the colorimetric analysis of glucose levels in serum

The Analyst ◽  
2017 ◽  
Vol 142 (21) ◽  
pp. 4106-4115 ◽  
Author(s):  
Jiayu Feng ◽  
Pengcheng Huang ◽  
Fang-Ying Wu
Keyword(s):  
Human Serum ◽  
Direct Visualization ◽  
Colorimetric Analysis ◽  
Glucose Levels ◽  
Bimetallic Nanoclusters ◽  
Sensing Platform ◽  
Agarose Hydrogel ◽  
Gold Platinum

Bimetallic Au–PtNCs with enhanced peroxidase-like activity were integrated into agarose hydrogels for direct visualization of glucose in human serum.

scholarly journals Synthesis of gold, platinum, and gold-platinum alloy nanoparticle colloids with high-power megahertz-repetition-rate lasers: the importance of the beam guidance method

2021 ◽  
Author(s):  
Friedrich Waag ◽  
René Streubel ◽  
Bilal Gökce ◽  
Stephan Barcikowski
Keyword(s):  
Laser Ablation ◽  
Noble Metals ◽  
Saline Water ◽  
Synthesis Method ◽  
Laser Ablation In Liquid ◽  
Platinum Alloy ◽  
Lower Productivity ◽  
Pattern Length ◽  
Scan Pattern ◽  
Gold Platinum

AbstractNanoparticles of noble metals and their alloys are of particular interest for biomedicine and catalysis applications. The method of laser ablation of bulk metals in liquids gives facile access to such particles as  high-purity colloids and is already used in industrial research. However, the method still lacks sufficient productivity for industrial implementation into series production. The use of innovative laser technology may help to further disseminate this colloid synthesis method in the near future. Ultrashort-pulsed lasers with high powers and megahertz-repetition-rates became available recently, but place high demands on the accurate optical laser pulse delivery on the target. Full lateral pulse separation is necessary to avoid a reduction of nanoparticle productivity due to pulse shielding. In this study, we compare flexible but rather slow galvanometer scanning with much faster but more expensive polygon-wheel scanning in their performance in the production of colloidal nanoparticles by laser ablation in liquid. Both beam guidance technologies are applied in the laser ablation of gold, platinum, and a gold-rich platinum alloy in micromolar saline water. We found that the dimensions of the scan pattern are crucial. A threshold pattern length exists, at which one scan technology becomes more productive than the other one. In addition, a much lower productivity was found for the ablation of gold compared to that of platinum. Alloying gold with only 10 at.% of platinum improved the productivity nearly to the level of platinum, reaching 8.3 g/h.

Filling COFs with bimetallic nanoclusters for CO2-to-alcohols conversion with H2O oxidation

2021 ◽  
Vol 288 ◽  
pp. 120001
Author(s):  
Yamei Huang ◽  
Peiyao Du ◽  
Wen-Xiong Shi ◽  
Ye Wang ◽  
Shuang Yao ◽  
...  
Keyword(s):  
Bimetallic Nanoclusters

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.

ChemInform Abstract: Icosahedral Gold-Platinum Alloy Nanocrystals in Hollow Silica: A Highly Active and Stable Catalyst for Ullmann Reactions.

ChemInform ◽  
2014 ◽  
Vol 45 (18) ◽  
pp. no-no
Author(s):  
Xiaoli Wu ◽  
Longfei Tan ◽  
Dong Chen ◽  
Xianwei Meng ◽  
Fangqiong Tang
Keyword(s):  
Hollow Silica ◽  
Platinum Alloy ◽  
Alloy Nanocrystals ◽  
Highly Active ◽  
Stable Catalyst ◽  
Gold Platinum
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