Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/121682
Title: PHOTOCATALYTIC CONSTRUCTION MATERIALS FOR DEGRADATION OF AIR POLLUTANTS
Authors: KRISHNAN PADMAJA
Keywords: Photocatalysis, titanium dioxide, silicate coating, sulphur dioxide, rhodamine B, black carbon
Issue Date: 9-Jul-2015
Citation: KRISHNAN PADMAJA (2015-07-09). PHOTOCATALYTIC CONSTRUCTION MATERIALS FOR DEGRADATION OF AIR POLLUTANTS. ScholarBank@NUS Repository.
Abstract: Deterioration of air quality in urban areas is a matter of serious concern globally. The objective of this research study is to examine how building surfaces with photocatalytic nano-titanium dioxide (TiO2) can degrade gaseous pollutants, sulphur dioxide (SO2) and nitrogen dioxide (NO2) and particulate pollutants, rhodamine B (RhB) and black carbon (BC). The TiO2 particles are incorporated in silicate coating. Silicate coating containing 15% TiO2 (by mass of the solid silicate or 0.7% by volume of the silicate coating) was most effective in the photocatalytic degradation of RhB, when compared with silicate coatings with TiO2 dosages of 5%, 10%, and 20%. Silicate coatings containing 15% TiO2 also showed excellent degradation efficiency for the removal of SO2 and NO2. The photocatalytic silicate coatings with TiO2 also showed effective removal of black carbon (BC). This demonstrates the potential of photocatalytic silicate coatings to remove air pollutants and enable self-cleaning surfaces.
URI: http://scholarbank.nus.edu.sg/handle/10635/121682
Appears in Collections:Ph.D Theses (Open)

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