Abstract
In this paper, we report our studies on the application of TiO2 catalyst to the stone conservation for the purpose of exploring new protective materials and methods which are compatible with the work of stone art. The sol solution of anatase TiO2 was prepared at a low temperature. The structure and microtopography of materials were investigated using X-ray diffractometer and scanning electron microscope. Acid resistance, soiling resistance, super-hydrophilicity, UV-light absorption and visible light transmittance of treated stones were carried out in order to evaluate efficiency of TiO2 catalyst as a protective agent. The TiO2 catalyst's photocatalytic activity for methylene blue degradation was also investigated in aqueous heterogeneous suspensions. The experimental results show that the TiO2 can function well as a new protective agent for stone conservation. This study indicates that the TiO2 photocatalyst has great potential as the protective material for stone conservation.
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