Ionic liquid-assisted synthesis of tungsten oxide nanoparticles with enhanced NO2 sensing properties at near room temperature

2020 ◽  
Vol 505 ◽  
pp. 144533 ◽  
Author(s):  
Yujiao Zhang ◽  
Xiaoli Cheng ◽  
Xianfa Zhang ◽  
Zoltán Major ◽  
Yingming Xu ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Tungsten Oxide ◽  
Room Temperature ◽  
Oxide Nanoparticles ◽  
Sensing Properties ◽  
Tungsten Oxide Nanoparticles

scholarly journals Crystalline WO3 nanoparticles for No2 sensing

2020 ◽  
Vol 14 (4) ◽  
pp. 282-292
Author(s):  
Branko Matovic ◽  
Jelena Lukovic ◽  
Dejan Zagorac ◽  
Olga Ivanova ◽  
Alexander Baranchikov ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Low Temperature ◽  
Tungsten Oxide ◽  
Room Temperature ◽  
Sensor Response ◽  
Literature Survey ◽  
Oxide Nanoparticles ◽  
Sensor Signal ◽  
Sensor Properties ◽  
Tungsten Oxide Nanoparticles

This study shows excellent NO2-sensing properties of tungsten oxide nanoparticles, prepared using a facile procedure which includes dissolution of metallic tungsten in hydrogen peroxide with subsequent low-temperature (400 ?C) heating. We also conducted a thorough literature survey on sensor properties of tungsten oxide prepared by various means and found that the sensor response towards NO2 registered in this work achieved the highest level. The most intriguing feature of the material obtained was a highly reproducible sensor signal at room temperature which was more than 100 times higher than any reported previously for WO3. The probable reason for such high sensor response was the presence of two WO3 polymorphs (-WO3 and h-WO3) in the material synthesized using a peroxide-assisted route. In order to further investigate synthesizedWO3 materials, sophisticated experimental (XRD, SEM, TEM, BET) and theoretical (B3LYP, HSE) methods have been used, as well as resistance and sensor response measurements at various temperatures.

scholarly journals Controlling the oxidation state of molybdenum oxide nanoparticles prepared by ionic liquid/metal sputtering to enhance plasmon-induced charge separation

RSC Advances ◽  
2020 ◽  
Vol 10 (48) ◽  
pp. 28516-28522 ◽  
Author(s):  
Kazutaka Akiyoshi ◽  
Tatsuya Kameyama ◽  
Takahisa Yamamoto ◽  
Susumu Kuwabata ◽  
Tetsu Tatsuma ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Metal ◽  
Oxidation State ◽  
Molybdenum Oxide ◽  
Charge Separation ◽  
Room Temperature ◽  
Room Temperature Ionic Liquid ◽  
Oxide Nanoparticles ◽  
Induced Charge ◽  
Molybdenum Oxide Nanoparticles

MoOx NPs, prepared by sputtering Mo metal on a room-temperature ionic liquid (RTIL) followed by heating in air, produced anodic photocurrents with the excitation of their LSPR peak.

scholarly journals Methods of preparation of metal-doped and hybrid tungsten oxide nanoparticles for anticancer, antibacterial, and biosensing applications

2021 ◽  
pp. 101641
Author(s):  
Anirudh Sharma ◽  
Adesh K. Saini ◽  
Nitin Kumar ◽  
Neeraj Tejwan ◽  
Th Abhishek Singh ◽  
...  
Keyword(s):  
Tungsten Oxide ◽  
Oxide Nanoparticles ◽  
Tungsten Oxide Nanoparticles ◽  
Metal Doped
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