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<abstract language="eng">TiO2 immobilization on concrete was studied using mixtures with cement, varnish and resin. The UV radiation sources were a germicide UV lamp and solar light. Aqueous solutions of chloroform (CHCl3) and of phenol were prepared and recirculated over the TiO2 immobilized surfaces. The immobilized TiO2 surfaces showed better photocatalytic efficiency for phenol degradation compared to the control. For CHCl3, the presence or absence of the catalyst did not cause any significant difference to its degradation efficiency. The micrographic results showed a more homogeneous surface for TiO2 immobilized in resin and varnish

Imobilização de TiO2 em concreto: fotodegradação de clorofórmio e fenol