Photocatalytic oxidation of cyanide ions by alkoxy-derived titanium oxide coatings

2000 ◽  
Vol 109 (3) ◽  
pp. 137-140 ◽  
Author(s):  
S. P. Hudson ◽  
M. Shirkhanzadeh ◽  
C. A. Pickles
2012 ◽  
Vol 454 ◽  
pp. 26-29
Author(s):  
Hui Dong Su ◽  
Zhong Hua Shi

Titanium oxide coatings (Ti/TiO2)were formed on the titanium net surface by micro-arc oxidation(MAO) in Na3PO4 solution using an AC power supply. Then the titanium oxide coatings were treated by acetic acid or La(NO3)3 aqueous solution to improve its activity. The structures and photocatalytic ability of titanium oxide coatings before and after surface treatment were characterized and evaluated by XRD, SEM, EDX. It was found that the titanium oxide film is mainly made of titanium and anatase .When acetic acid aqueous concentration is 0.1mol•L-1 and soak time is 6 hour ,the Ti/TiO2 films photocatalytic degradation rate increased from 15% to 33.6%. When La(NO3)3 aqueous concentration is 0.1mol•L-1 and soak time is 12 hour, the Ti/TiO2 films photocatalytic degradation rate increased from 15% to 34.8%.


2000 ◽  
Vol 12 (5) ◽  
pp. 341-343 ◽  
Author(s):  
J. Rodríguez ◽  
M. Gómez ◽  
J. Lu ◽  
E. Olsson ◽  
C.-G. Granqvist

2018 ◽  
Vol 349 ◽  
pp. 647-654 ◽  
Author(s):  
W. Pawlak ◽  
M. Jakubowska ◽  
A. Sobczyk-Guzenda ◽  
M. Makówka ◽  
H. Szymanowski ◽  
...  

2011 ◽  
Vol 71-78 ◽  
pp. 972-975 ◽  
Author(s):  
Hui Dong Su ◽  
Hong Lei Du

Titanium oxide coatings(TiO2/Ti) were formed on the titanium surface by micro-arc oxidation(MAO) in Na3PO4solution.And using the TiO2/Ti as anod electrode, the titanium as counter electrode in the system of three-dimensional electrode.Coated γ- Al2O3(TiO2/γ-Al2O3) that prepared by sol-gel dipcoating method ,and scrap iron mixture as particle electrode, combining with the UV lamp and regulated power supply make up the three-dimensional electrode photoelectrocatalysis system. The photoelectrocatalysis system use 0.02M Na2SO4aqueous solution as supporting electrolyte.The photoelectrocatalytic ability of titanium oxide coatings were evaluated by photoelectrocatalytic degradation of methylene blue aqueous solution.The experiment demonstrate that compare to photoelectrocatalytic degradation of single TiO2/Ti film and only adsorbtion, the photoelectrocatalysis of three-dimensional electrode with coated particle electrode have the synergistic effect with them, which can improve the degradation of methylene blue aqueous solution. When the methylthionine chloride concentration of 5mg/L, cell voltage of 7V. The three-dimensional electrode photoelectrocatalysis degradation of methylene blue compare to traditional two-dimensional plate electrodes which without particle electrode increase 43.35% after 3 hours photoelectrocatalysis.


2009 ◽  
Vol 394 (1) ◽  
pp. 7-12 ◽  
Author(s):  
Roberta Carbone ◽  
Marzia De Marni ◽  
Andrea Zanardi ◽  
Simone Vinati ◽  
Emanuele Barborini ◽  
...  

2020 ◽  
Vol 46 (4) ◽  
pp. 5098-5108
Author(s):  
Daniel Tejero-Martin ◽  
Zdenek Pala ◽  
Simon Rushworth ◽  
Tanvir Hussain

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