scholarly journals Improvement in Photocatalytic Effects of Dye Sensitized Titanium Dioxide by Hydroxyapatite Coating

2020 ◽  
Vol 24 (4) ◽  
pp. 63-71
Author(s):  
Htoo Nay Wunn ◽  
Shinichi Motoda ◽  
Motoaki Morita ◽  
Shinya Katayose
2015 ◽  
Vol 1119 ◽  
pp. 14-18
Author(s):  
Sofia Javed ◽  
Muhammad Aftab Akram ◽  
Mohammad Mujahid

Nanoflowers are desirable in light driven applications like Dye Sensitized Solar Cells (DSSCs) due to their large surface area and greater light absorption capabilities. An instant, simple, cheap and environment friendly method of preparing titanium dioxide nanoflowers is presented. The nanoflowers are produced in a time as short as 5 minutes in aqueous conditions without the use of hazardous hydrofluoric acid or organic surfactants at 1 atm. pressure and low temperature of 100°C. Titanium dioxide commercial nanopowders are treated with microwaves in an aqueous sodium hydroxide solution for small durations. The resulting powders are annealed at 450°C in air and characterization is performed using XRD, SEM and Raman spectroscopy.


2013 ◽  
Vol 68 (1) ◽  
pp. 34-37 ◽  
Author(s):  
N. V. Golubko ◽  
Yu. E. Roginskaya ◽  
A. E. Ozimova ◽  
D. Yu. Godovskii ◽  
D. Yu. Paraschuk

Author(s):  
Susanne Reischauer ◽  
Volker Strauss ◽  
Bartholomäus Pieber

The combination of nickel- and photocatalysis has unlocked a variety of cross couplings. These protocols rely on a few photocatalysts that can only convert a small portion of visible light (<500 nm) into chemical energy. Many dyes that absorb a much broader spectrum of light are not applicable due to their short-lived excited states. Here we describe a self-assembling catalyst system that overcomes this limitation. The modular approach combines nickel catalysis with dye-sensitized titanium dioxide and can be used to catalyze various bond formations. <br>


2015 ◽  
Vol 347 ◽  
pp. 636-642 ◽  
Author(s):  
Penglei Su ◽  
Hongyi Li ◽  
Jinshu Wang ◽  
Junshu Wu ◽  
Bingxin Zhao ◽  
...  

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