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Application of nano-TiO2 photocatalyst in marine pollution control

Nano-TiO2 photocatalysis technology is a new environmental pollutant purification technology. It is of great significance to control marine pollution by using nano-TiO2 photocatalyst. Seawater is artificially distributed, and the weathered diesel is added to the simulated seawater polluted by oil in seawater. The nano-TiO2 photocatalyst is synthesized by sol–gel method. The nano-TiO2 photocatalyst is added into the simulated seawater and the high pressure mercury lamp is used to carry out the photocatalysis experiment of nano-TiO2. Through scanning electron microscopy, X-ray diffraction and photocatalytic degradation performance of nano-TiO2 under different conditions, the best nano-TiO2 photocatalytic process for marine pollution control is determined. The experimental results show that when the pH value is 6, the dosage of nano-TiO2 is 20 mg, the doping ratio is 16% and the illumination time is 5 h, the nano-TiO2 photocatalyst has the best degradation efficiency and the best marine pollution control performance.