| For new ocean development requests, more and more infrastructures and ships will be built, which need protection by anti-fouling coatings. Because of frequent influenced by Marine fouling organisms, these not only caused serious economic losses, but also increases the risk of marine operations.Through the method of adding antifoulant in antifouling coating, this may be a good way. But when the antifouling agent had been added to the coating, there was a problem urgently to be solved that antifouling agent will release in short time.Therefore, it is important to research how to decrease the rate of antifouling agent release. In this paper, we prepared from four different morphology of TiO2, and explored its slow control effect as a carrier.By the hydrothermal method, we prepared TiO2 hollow microspheres and explored the influence factors of TiO2 hollow core ball structure. The results showed that the samples had uniform particle size and high ball rate. We used ultraviolet spectrophotometer to analyze slow controlled release, and the experimental results showed that:In oscillation or mixing way, we found that BIT are released by about 35% in 2 h. Relatively, mixing of slow-release effect is better. Through the way of reaction for hydrothermal 24 h and 48 h, the equilibrium time respectively was 40 h, 100 h and the rate is high and low conversion. In general, hydrothermal 48 h had better slowed-controlled release capacity and load factor.In this paper, using titanium sulfate as Ti source, a gas with hydrogen peroxide and urea as bubble template, we adopted one-step hydrothermal approach to fabricate the TiO2 hollow microsphere on bubble templates. The diameter of hollow spheres with hydrothermal 10h was 500 nm. a hollow interior could be clearly seen from the cracked opening with 100nm. Moreover, They were composed of tiny nanorods. Additionally, hydrothermal time had a significant effect on the morphology? crystallinity and the adsorption quantity of hollow spheres. Because of multistage hollow structure and large specific surface area, so we used it as a carrier.Through the way of reaction for hydrothermal 10h, the equilibrium time respectively was 130 h and the rate was high and low conversion. So it had a certain slow-release controlled release effect.Through the research of the emulsion method combined with sol-gel method, we could have known mat:When the mass ratio of BIT and EAA was 2.2:0.4, we could get the higher pellet yield.By combining the method of ultrasonic oscillation, the microspheres had the more uniform size and good dispersibility. TG in between 200-250? performanced a decline in the quality which showed BIT had been succeeded in the embedding. The microspheres which prepared by this method can embed effectively BIT in the microspheres, and have a better controlled release effect. Its load rate can be up to 15.08%.we generated anatase TiO2 nanotubes by the hydrothermal method. By using TEM and XRD analysis, the experiments had proved that the morphology and structure of nanotubes would continue to change. With hydrothermal method we obtained anatase type titanium oxide tube which had a big difference between before and after embedding. We suspected that had been already loaded BIT in nano tube. The results proved that the samples could respectively be sustained release 55 h,180 h, 100h. Sample two had a higher capacity and presented the better controlled release effect in both the quick release and slow release phase. |
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