Degradation of Formaldehyde and Benzene by TiO2 Photocatalytic Cement Based Materials

A novel photocatalytic cement based material was prepared. The distribution of TiO2 on the surface of cement was characterized by scanning electron microscope（SEM） and X-ray diffraction（XRD）, which showed the relationship of photocatalysis and presence of TiO2. TiO2 also had an impact on cement hydr...

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Published inJournal of Wuhan University of Technology. Materials science edition Vol. 32; no. 2; pp. 391 - 396
Main Authors Liu, Peng, Yu, Xiangwei, Wang, Fazhou, Zhang, Wenqin, Yang, Lu, Liu, Yunpeng
Format Journal Article
LanguageEnglish
Published Wuhan Wuhan University of Technology 01.04.2017
Springer Nature B.V
Subjects
Benzene
Cement hydration
Cementitious Materials
Cements
Chemistry and Materials Science
Electron microscopes
Formaldehyde
Hydration
Hydrocarbons
Materials Science
Photocatalysis
Scanning electron microscopy
Titanium dioxide
Titanium oxides
X-ray diffraction
building materials
photocatalytic cement
sunlight
formaldehyde
TiO
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Summary:A novel photocatalytic cement based material was prepared. The distribution of TiO2 on the surface of cement was characterized by scanning electron microscope（SEM） and X-ray diffraction（XRD）, which showed the relationship of photocatalysis and presence of TiO2. TiO2 also had an impact on cement hydration, which was studied by thermal analysis. With 300 W UV illuminations, formaldehyde and benzene were degraded efficiently by the prepared photocatalytic cement based materials. 15wt% TiO2/cement showed the highest degradation efficiency and capability. The results show that formaldehyde and benzene can be degraded within 4 and 9 hours, respectively. Besides, inorganic ions can induce TiO2 agglomeration. As a result, the presence of inorganic ions in cement is unfavorable for degradation. The photocatalytic cement based materials were fabricated and the degradation efficiency of formaldehyde was measured on building roof under sunlight illumination. Formaldehyde in glass chamber can be degraded thoroughly within 10 days.
Bibliography:A novel photocatalytic cement based material was prepared. The distribution of TiO2 on the surface of cement was characterized by scanning electron microscope（SEM） and X-ray diffraction（XRD）, which showed the relationship of photocatalysis and presence of TiO2. TiO2 also had an impact on cement hydration, which was studied by thermal analysis. With 300 W UV illuminations, formaldehyde and benzene were degraded efficiently by the prepared photocatalytic cement based materials. 15wt% TiO2/cement showed the highest degradation efficiency and capability. The results show that formaldehyde and benzene can be degraded within 4 and 9 hours, respectively. Besides, inorganic ions can induce TiO2 agglomeration. As a result, the presence of inorganic ions in cement is unfavorable for degradation. The photocatalytic cement based materials were fabricated and the degradation efficiency of formaldehyde was measured on building roof under sunlight illumination. Formaldehyde in glass chamber can be degraded thoroughly within 10 days.
42-1680/TB
photocatalytic cement TiO2 formaldehyde building materials sunlight
ISSN:1000-2413
1993-0437
DOI:10.1007/s11595-017-1608-8