Composite photocatalyst sol and preparation process thereof

Abstract

The invention relates to the technical field of air purification, in particular to composite photocatalyst sol and a preparation process thereof. Raw materials of the photocatalyst comprise the following components in percentage by weight: 10%-30% of a titanate precursor, 5%-20% of a photocatalyst, 5%-15% of nano silicon dioxide, 1%-5% of a dispersing agent, 0.5%-1% of a pH regulator and the balance of deionized water. Comprising the following steps: mixing raw materials in proportion to obtain a mixed solution; heating the mixed solution to a certain temperature under a stirring condition, and keeping the temperature for a period of time, so that the mixed solution forms a sol-like mixture; and carrying out ultrasonic treatment, aging treatment, filtering treatment and drying treatment to obtain a stable powdery product. The invention provides the composite photocatalyst sol and the preparation process thereof, and the composite photocatalyst sol is an air purification material which is high in cost benefit, environment-friendly and easy for large-scale production so as to meet the ever-increasing indoor air purification requirement.