Open AccessMnO2 and TiO2 based Nanocomposites for Macroscopic and Individual Nanodevices in Sensing, Energy Storage and Photocatalysis Applications
Author(s) -
Than Zaw Oo,
Win Naing Min,
Theint Hay Mar Wint,
В. В. Коледов,
Svetlana von Gratowski
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1461/1/012124
Subject(s) - materials science , photocatalysis , nanocomposite , nanotechnology , electrode , energy storage , photodegradation , anodizing , capacitance , supercapacitor , nanoparticle , chemical engineering , composite material , catalysis , chemistry , aluminium , biochemistry , power (physics) , physics , quantum mechanics , engineering
The present nanotechnological trend is promising for the devices based on nanocomposites. We focus on three application areas, biosensing, energy storage and photocatalyst. A newer frontier trend is related to individual nano-devices based on individual nano-objects giving the exciting advantages. In the present work, the MnO 2 and TiO 2 nanocomposites were developed by simple and economical means. The MnO 2 and Cu/MnO 2 were potentiodynamically deposited on stainless steel sheets and ITO coated glass substrates for energy storage and sensing applications. The electrochemically anodized TiO 2 nanotubes and Ag nanoparticles decorated TiO 2 nanotubes were fabricated on Ti base for photocatalysis. The MnO 2 film electrode, Cu/MnO 2 film electrode, Ag/TiO 2 nanotubes were preliminarily demonstrated as macroscopic devices in capacitors, glucose sensors and photocatalysis water treatments. The specific capacitance of MnO 2 film electrode is as high as 135 Fg −1 and the Cu/MnO 2 sensor has the low detection limit of 0.986. For the water purification, the photodegradation efficiency of Ag/TiO 2 nanotubes is as high as 95% under UV irradiation.