Direct Electrochemistry and Photoelectro-Catalysis on Oxygen Reduction Reaction of Titanium Dioxide Nano-Tubes Sensitized by Meso-Tetrakis (4-carboxyphenyl) Porphine with Laccase Accommodation

2021 ◽  
Vol 29 (1) ◽  
pp. 62-74
Author(s):  
Min Zhang ◽  
Mi Zhang ◽  
Shu Wei Zhang ◽  
Han Zeng
Keyword(s):  
Titanium Dioxide ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Direct Electrochemistry ◽  
Reduction Reaction

Simple Fabrication of Titanium Dioxide/N-Doped Carbon Hybrid Material as Non-Precious Metal Electrocatalyst for the Oxygen Reduction Reaction

2017 ◽  
Vol 9 (22) ◽  
pp. 18782-18789 ◽  
Author(s):  
Shangbin Jin ◽  
Cuiling Li ◽  
Lok Kumar Shrestha ◽  
Yusuke Yamauchi ◽  
Katsuhiko Ariga ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Hybrid Material ◽  
Precious Metal ◽  
Reduction Reaction

scholarly journals Electrocatalysis of oxygen reduction reaction on gold nanoparticles modified titanium dioxide films with different morphology

2020 ◽  
pp. 63-75
Author(s):  
Hanna M. Maltanava ◽  
Nadzeya Yu. Brezhneva ◽  
Alexander V. Mazanik ◽  
Semyon O. Mazheika ◽  
Tatiana V. Gaevskaya ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Gold Nanoparticles ◽  
Titanium Dioxide ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Titanium Substrate ◽  
Reduction Reaction ◽  
Titanium Dioxide Films ◽  
Mesoporous Oxide ◽  
Mesoporous Titanium Dioxide

Dense and mesoporous titanium dioxide films have been obtained on titanium substrate by means of thermal oxidation, hydrolysis of polybutyltitanate, deposition of titanium dioxide sol, ultrasonic treatment and anodic oxidation and characterized by scanning electron microscopy, transmission electron microscopy and Raman spectroscopy. Electrochemical activity of titanium dioxide films, initial and modified by gold nanoparticles, in oxygen reduction reaction (ORR) in alkaline medium has been studied by cyclic voltammetry. It has been demonstrated that the efficiency of the dense and mesoporous titanium dioxide films in ORR is determined by their morphology, structure and pore ordering degree. Modification of titanium dioxide films by gold nanoparticles results in the decrease in overpotential of the ORR. It has been found that the electrodes consisted of highly ordered layers of titania nanotubes with deposited gold nanoparticles demonstrate sufficiently higher electrocatalytic activity toward the oxygen electroreduction in comparison with TiO2/Au systems based on dense films and mesoporous films with disordered pore structure. Features of electrochemical behavior of TiO2/Au (nanotubes/nanoparticles) system are explained by the peculiarities of electron transport to the electrode surface and structure of space charge layer in the mesoporous oxide film.

Effect of annealing temperature and element composition of titanium dioxide/graphene/hemin catalysts for oxygen reduction reaction

RSC Advances ◽  
2015 ◽  
Vol 5 (101) ◽  
pp. 82879-82886 ◽  
Author(s):  
Yuewu Zhao ◽  
Linqun Zhang ◽  
Wei Wei ◽  
Ying Li ◽  
Anran Liu ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Annealing Temperature ◽  
Reduction Reaction ◽  
Element Composition

Enhanced ORR catalytic activity of a flower-like TiO2/Gr/Hem composite and unusual iron inhibition effects.

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