Thermal decomposition of solution processable metal xanthates on mesoporous titanium dioxide films: a new route to quantum-dot sensitised heterojunctions

2012 ◽  
Vol 14 (47) ◽  
pp. 16192 ◽  
Author(s):  
Thierry Lutz ◽  
Andrew MacLachlan ◽  
Anna Sudlow ◽  
Jenny Nelson ◽  
Michael S. Hill ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Titanium Dioxide ◽  
Quantum Dot ◽  
Titanium Dioxide Films ◽  
Solution Processable ◽  
Mesoporous Titanium Dioxide ◽  
Decomposition Of Solution

scholarly journals Quantum dot sensitized electrospun mesoporous titanium dioxide hollow nanofibers for photocatalytic applications

RSC Advances ◽  
2016 ◽  
Vol 6 (53) ◽  
pp. 48109-48119 ◽  
Author(s):  
Narendra Singh ◽  
Kunal Mondal ◽  
Mrinmoy Misra ◽  
Ashutosh Sharma ◽  
Raju Kumar Gupta
Keyword(s):  
Titanium Dioxide ◽  
Quantum Dot ◽  
Dye Degradation ◽  
Coaxial Electrospinning ◽  
Hollow Nanofibers ◽  
Silar Method ◽  
Photocatalytic Dye Degradation ◽  
Cds Qds ◽  
Mesoporous Titanium Dioxide ◽  
Photocatalytic Applications

TiO2 hollow nanofibers prepared by coaxial electrospinning were sensitized with CdS QDs by SILAR method and their photocatalytic dye degradation performance was investigated.

Nanophotobiocatalysts based on mesoporous titanium dioxide films conjugated with enzymes and photosynthetic reaction centers of bacteria

2008 ◽  
Vol 42 (7) ◽  
pp. 591-593 ◽  
Author(s):  
V. A. Nadtochenko ◽  
V. V. Nikandrov ◽  
A. A. Gorenberg ◽  
M. G. Karlova ◽  
E. P. Lukashev ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Reaction Centers ◽  
Photosynthetic Reaction Centers ◽  
Titanium Dioxide Films ◽  
Mesoporous Titanium Dioxide

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.

A p-Type PbS Quantum Dot Ink with Improved Stability for Solution Processable Optoelectronics

2021 ◽  
Author(s):  
Fiaz Ahmed ◽  
John Hardin Dunlap ◽  
Perry J. Pellechia ◽  
Andrew Greytak
Keyword(s):  
Quantum Dot ◽  
Ligand Exchange ◽  
Chemical Characterization ◽  
Single Step ◽  
Improved Stability ◽  
Solution Processable ◽  
P Type ◽  
Pbs Quantum Dot

A highly stable p-type PbS-QDs ink is prepared using a single-step biphasic ligand exchange route, overcoming instability encountered in previous reports. Chemical characterization of the ink reveals 3-mercaptopriopionic acid (MPA)...

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