Title :
Mechanism Analysis of Indoor Formaldehyde Decomposition by Nano-Titanium Oxide
Author :
Wang, Shuqin ; Zhang, Yiming ; Hu, Manyin
Author_Institution :
Sch. of Environ. Sci. & Eng., North China Electr. Power Univ., Baoding
Abstract :
The effects of nano-titanium oxide dosage, sunlight exposure time, adsorption time on the formaldehyde removal efficiency were studied. The nano-titanium oxide was characterized by a scanning electron microscope and X-ray diffraction analysis. The catalysis mechanisms of nano-titanium oxide on formaldehyde removal efficiency were discussed. The results show that formaldehyde removal efficiency of nano-titanium oxide was 42.5% and 59.6% without and with sunlight; it was 7% and 22.6% higher than that of active carbon, respectively. Nano- TiO2 can directly react in the range of sun´s ray wavelength to decompound formaldehyde. The results may be used to provide a useful basis for further applying nano-TiO2 to indoor air purification in the near future.
Keywords :
X-ray diffraction; air cleaners; catalysis; decontamination; nanoparticles; scanning electron microscopy; TiO2; X-ray diffraction; adsorption time; air purification; catalysis; indoor formaldehyde decomposition; mechanism analysis; nanotitanium oxide; scanning electron microscopy; sunlight exposure time; Carbon dioxide; Gases; Organic materials; Photonic band gap; Pollution measurement; Purification; Scanning electron microscopy; Sun; Temperature; X-ray diffraction;
Conference_Titel :
Bioinformatics and Biomedical Engineering, 2008. ICBBE 2008. The 2nd International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1747-6
Electronic_ISBN :
978-1-4244-1748-3
DOI :
10.1109/ICBBE.2008.1155
