Title :
Photocatalytic decompositions of gaseous HCHO over Ag/TiO2 nanotube arrays
Author :
Du, Jingjing ; Chen, Wen ; Zhao, Chunxia ; Dai, Ying
Author_Institution :
State Key Lab. of Adv. Technol. for Mater. Synthesis & Process., Wuhan Univ. of Technol., Wuhan, China
Abstract :
Highly ordered TiO2 nanotube arrays prepared by electrochemical anodization gets considerable interest as a practical air purifier, since the nanotube arrays can form a TiO2 film with a porous surface and straight gas diffusion channel. Here, we investigate photocatalytic decompositions of HCHO over TiO2 and Ag/TiO2 nanotube arrays. Compared with the pure TiO2 nanotube arrays with similar thickness and geometric area, the results showed that Ag loading TiO2 nanotube arrays within a certain range could significantly improve the degradation rate of HCHO, the main product of HCHO degradation was detected to be CO2.
Keywords :
anodisation; catalysts; decomposition; diffusion; nanotubes; silver; titanium compounds; Ag-TiO2; air purifier; electrochemical anodization; gas diffusion channel; gaseous HCHO; nanotube arrays; photocatalytic decompositions; porous surface; Annealing; Degradation; Electrodes; Hafnium; Inductors; Materials science and technology; Nanoparticles; Oxidation; Temperature; Titanium;
Conference_Titel :
Nanoelectronics Conference (INEC), 2010 3rd International
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-3543-2
Electronic_ISBN :
978-1-4244-3544-9
DOI :
10.1109/INEC.2010.5425206
