Nanocomposites composed of sulfonated polysulfone/hexagonal boron nitride/ionic liquid for supercapacitor applications

2019 ◽  
Vol 21 ◽  
pp. 672-679 ◽  
Author(s):  
Seyda Tugba Gunday ◽  
Emre Cevik ◽  
Abdulmalik Yusuf ◽  
Ayhan Bozkurt
Keyword(s):  
Ionic Liquid ◽  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Sulfonated Polysulfone ◽  
Supercapacitor Applications

scholarly journals Phosphomolybdic acid immobilized on ionic liquid-modified hexagonal boron nitride for oxidative desulfurization of fuel

RSC Advances ◽  
2017 ◽  
Vol 7 (85) ◽  
pp. 54266-54276 ◽  
Author(s):  
Haiyan Ji ◽  
Haitao Ju ◽  
Rong Lan ◽  
Peiwen Wu ◽  
Jia Sun ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Oxidative Desulfurization ◽  
Supported Catalyst ◽  
Phosphomolybdic Acid ◽  
Catalytic Performance ◽  
Catalytic Oxidative Desulfurization ◽  
Enhanced Stability ◽  
Excellent Catalytic Performance

An ionic liquid modified hexagonal boron nitride was developed for preparation of a supported catalyst with enhanced stability and excellent catalytic performance in catalytic oxidative desulfurization.

Marcus-Hush Theory Revealed by Electron Tunneling Through Hexagonal Boron Nitride

2019 ◽  
Author(s):  
Matěj Velický ◽  
Sheng Hu ◽  
Colin R. Woods ◽  
Peter S. Toth ◽  
Viktor Zólyomi ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Boron Nitride ◽  
Electron Tunneling ◽  
Hexagonal Boron Nitride ◽  
Large Body ◽  
Liquid Solution ◽  
Limiting Current ◽  
Electron Transfer Rate Constant ◽  
Electrochemical Parameters ◽  
Voltammetric Measurements

Marcus-Hush theory of electron transfer is one of the pillars of modern electrochemistry with a large body of supporting experimental evidence presented to date. However, some predictions, such as the electrochemical behavior at microdisk electrodes, remain unverified. Herein, we present a study of electron tunneling across a hexagonal boron nitride barrier between a graphite electrode and redox levels in a liquid solution. This was achieved by the fabrication of microdisk electrodes with a typical diameter of 5 µm. Analysis of voltammetric measurements, using two common redox mediators, yielded several electrochemical parameters, including the electron transfer rate constant, limiting current, and transfer coefficient. They show a significant departure from the Butler-Volmer behavior in a clear manifestation of the Marcus-Hush theory of electron transfer. In addition, our system provides a novel experimental platform, which could be applied to address a number of scientific problems such as identification of reaction mechanisms, surface modification, or long-range electron transfer.

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