Method for improving degrading effect of asphalt road for automobile exhaust by utilizing activated carbon adsorbability

A technology of automobile exhaust and activated carbon, which is applied in the direction of separation methods, chemical instruments and methods, and other chemical processes, and can solve the problems of poor degradation effect and low photocatalytic efficiency

Inactive Publication Date: 2015-12-23
NANJING FORESTRY UNIV
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Problems solved by technology

[0007] The invention is a kind of nano-TiO that utilizes the high adsorption characteristics of activated carbon to increase the load of asphalt pavement through the synergistic effect of adsorption and degradation. 2 A method for the photocatalytic degradation efficiency and degradation effect of automobile exhaust, to solve the current problem of nano-TiO loaded on asphalt pavement 2 Problems of low photocatalytic efficiency and poor degradation effect

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Embodiment Construction

[0012] The present invention is a nano-titanium dioxide (TiO 2 ) to improve the method for asphalt pavement to automobile exhaust degradation effect, the specific implementation steps are as follows:

[0013] (1) Take an appropriate amount of activated carbon particles, put them into a beaker, add a certain amount of distilled water, heat to boiling, pour out the boiling liquid, then replace a certain amount of distilled water, heat to boiling, pour out, repeat three times, and then put In an oven, dry at 80°C for 12 hours to remove the impurities adsorbed by the activated carbon during storage and complete the pretreatment of activated carbon;

[0014] (2) Preparation of TiO by sol-gel method 2 Sol, on TiO 2 In the state of high-speed stirring with a magnetic stirrer in the sol, according to the activated carbon particles and TiO 2 Slowly add the different dosage ratios of the dried activated carbon, and continue to stir for 3 hours to make the activated carbon and TiO 2 ...

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Abstract

The invention relates to a method for improving degrading effect of asphalt road for automobile exhaust by loading nanometer titania (TiO2) by utilizing activated carbon adsorbability, belonging to the technical field of automobile exhaust treatment, and aiming at solving the problems of low efficiency and poor degrading effect of TiO2 photocatalyst loaded on the asphalt road. Nanometer TiO2 sol is firstly prepared by adopting a sol-gel method, activated carbon is sufficiently mixed with the TiO2 sol, then nanometer TiO2 is loaded in vacuum negative pressure by adopting an impregnation method, and calcination is carried out to prepare the activated carbon-TiO2 composite photocatalyst; optimal TiO2 loading capacity can be determined by adopting a scanning electron microscope and a specific surface nitrogen adsorption instrument to represent the adsorption effect of the composite photocatalytic material in combination with the experimental result for degradation of automobile exhaust; then activated carbon particles loading TiO2 can be added to an asphalt mixture according to different mixing amounts to form an asphalt mixture test piece, then the degradation efficiency for automobile exhaust and various pavement performances of the test piece can be tested to determine the optimal mixing amount of the composite photocatalyst, so that the degradation effect of the asphalt road for automobile exhaust can be improved.

Description

technical field [0001] The present invention is a nano-titanium dioxide (TiO 2 ) The method for improving the degradation effect of asphalt pavement on automobile exhaust belongs to the technical field of automobile exhaust treatment. Background technique [0002] With the rapid development of the economy, the number of automobiles in our country has increased sharply, and the problem of automobile exhaust has become increasingly serious. Researchers have been working on reducing vehicle exhaust pollution for nearly half a century. Although more and more new materials, new technologies, and new measures have been applied to exhaust purification, motor vehicle exhaust pollution is still not well received. A good solution, various exhaust gas purification technologies have their limitations. In recent years, nanophotocatalytic technology has developed rapidly, can degrade almost all pollutants, and has outstanding advantages such as mild reaction conditions, low energy consu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30B01J21/18B01D53/94
Inventor 许涛方博文李国芬王宏畅
Owner NANJING FORESTRY UNIV
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