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

fYear

2010

Firstpage

400

Lastpage

401

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/INEC.2010.5425206

Filename

5425206