Study On The Control Preparation And Performance Optimization Of Double Mesoporous Titanium-carbon Microspheres

Pollution is the most serious of all environmental problems and poses a major threat to the health and well-being of millions of people and global ecosystems.Other major environmental problems are also partly caused by pollution.These include global warming,climatic change and the loss of biodiversity through the extinction of many species.In the future,environmental pressures can only increase as a result of population growth and the expectation of higher living standards.For at least thirty years,people have become increasingly aware of these issues.As a result,governments and regulatory bodies have responded by taking action against grossly polluting activity and by enforcing tighter limits on the emission of pollutants into the environment.As the level of control improves so the financial costs increase exponentially,hence an effective limit must be enforced which does not impose unacceptable burdens on industrial producers.In this paper,a kind of double mesoporous material is synthesized by hydrothermal method,which has adsorption and photocatalytic properties.Then the adsorption performance and photocatalytic performance were optimized.The specific research content is as follows:?1?In this experiment,the template agent silicon dioxide was synthesized by sol gel method.The mesoporous carbon with uniform thickness,complete structure and uniform size is formed by high-temperature calcinations using Silicon dioxide as the template and 1-allyl-2-thiourea as carbon source.?2?The mesoporous titanium dioxide was synthesized by hydrothermal method.In the process of synthesis,double mesoporous materials with special morphology were obtained by controlling stirring time and adding mesoporous carbon content.Double mesoporous materials have both photocatalytic properties and adsorption properties.The adsorption effect and the adsorption rate of the three dyes were compared under the double mesoporous materials.The adsorption effect of the double mesoporous materials on malachite green was the best and the adsorption rate was the fastest.The photocatalytic reduction of Cr₂O₇^2-was performed using the photocatalytic performance,and Cr₂O₇^2-was totally reduced to Cr³⁺by the catalysis with the promotertartaric acid.?3?The adsorption performance of mesoporous carbon in double mesoporous materials was optimized.The double mesoporous material was optimized by sulfonation hydrothermal reaction.According to the principle of ion chromatographic column,sulfonic acid group on the surface of sulfonated composite material can be exchanged with Cr³⁺.The Cr³⁺after photocatalytic reduction is also removed from the solution.?4?The photocatalytic performance of mesoporous titanium dioxide was optimized in the double mesoporous materials.Photocatalytic performance of modified mesoporous titanium dioxide with W element doping and WO₃ surface modification was improved.The result of photocatalytic removing PNP by modified mesoporous titanium dioxide is good.