Electrocatalytic and photocatalytic activity of Pt–TiO2 films on boron-doped diamond substrate

2013 ◽  
Vol 269 ◽  
pp. 171-174 ◽  
Author(s):  
Tanţa Spătaru ◽  
Maria Marcu ◽  
Nicolae Spătaru
2017 ◽  
Vol 408 ◽  
pp. 125-134 ◽  
Author(s):  
Christos K. Mavrokefalos ◽  
Maksudul Hasan ◽  
James F. Rohan ◽  
Richard G. Compton ◽  
John S. Foord

2014 ◽  
Vol 30 (2) ◽  
pp. 101-105 ◽  
Author(s):  
J. J. Yuan ◽  
H. D. Li ◽  
Q. L. Wang ◽  
S. H. Cheng ◽  
X. K. Zhang ◽  
...  

Author(s):  
Juan Manuel Peralta-Hernandez ◽  
Martin Pacheco-Alvarez ◽  
Ricardo Picos ◽  
Oscar M. Rodriguez-Narvaez

2007 ◽  
Vol 336-338 ◽  
pp. 1924-1926 ◽  
Author(s):  
Hong Li ◽  
Gao Ling Zhao ◽  
Gang Xu ◽  
Gao Rong Han

In order to investigate the effects of doping boron on the self-cleaning properties of TiO2 thin films, sol-gel method was employed to prepare TiO2 films with various amount of boron on the glass substrates. Atomic Force Microscope (AFM) and X-ray diffraction (XRD) were carried out to investigate the effects of boron on the microstructure and crystallization behavior of the thin films. The photocatalytic activity and the hydrophilicity of the films were also measured. The results showed that the photocatalytic activity of TiO2 films was improved by doping boron, and its hydrophilicity wasn’t destroyed. This can be ascribed to the enhancement of the surface energy, which was caused by the reduction of the crystal grain size of TiO2.


Molecules ◽  
2018 ◽  
Vol 23 (12) ◽  
pp. 3095 ◽  
Author(s):  
Norihiro Suzuki ◽  
Akihiro Okazaki ◽  
Haruo Kuriyama ◽  
Izumi Serizawa ◽  
Aiga Hara ◽  
...  

There is a need for highly efficient photocatalysts, particularly for water purification. In this study, we fabricated a mesoporous TiO2 thin film on a boron-doped diamond (BDD) layer by a surfactant-assisted sol-gel method, in which self-assembled amphiphilic surfactant micelles were used as an organic template. Scanning electron microscopy revealed uniform mesopores, approximately 20 nm in diameter, that were hexagonally packed in the TiO2 thin film. Wide-angle X-ray diffraction and Raman spectroscopy clarified that the framework crystallized in the anatase phase. Current–voltage (I–V) measurements showed rectification features at the TiO2/BDD heterojunction, confirming that a p–n hetero-interface formed. The as-synthesized mesoporous TiO2/BDD worked well as a photocatalyst, even with a small volume of TiO2 (15 mm × 15 mm × c.a. 1.5 µm in thickness). The use of deep UV light (λ = 222 nm) as a light source was necessary to enhance photocatalytic activity, due to photo-excitation occurring in both BDD and TiO2.


2003 ◽  
Vol 764 ◽  
Author(s):  
Hiroyuki Togawa ◽  
Hideki Ichinose

AbstractAtomic resolution high-voltage transmission electron microscopy and electron energy loss spectroscopy were performed on grain boundaries of boron-doped diamond, cooperated with the ab-initio calculation. Segregated boron in the {112}∑3 boundary was caught by the EELS spectra. The change in atomic structure of the segregated boundary was successfully observed from the image by ARHVTEM. Based on the ARHVTEM image, a segregted structure model was proposed.


2015 ◽  
Vol 14 (6) ◽  
pp. 1339-1345
Author(s):  
Monica Ihos ◽  
Florica Manea ◽  
Maria Jitaru ◽  
Corneliu Bogatu ◽  
Rodica Pode

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