Hydrotalcite/Fiber Composite Structure:Peparation, Adsorption And Photocatalytic Properties

The water pollution caused by heavy metal ions and organic pollutions bring a lot of adverse effects in people’s lives and health. The water pollution is not only bring the inconvenience to human life but also threaten human health.The main purpose of this study is to solve the above-mentioned problem of pollution. We prepared a variety of layered double hydroxides successful by co-precipitation method, and we used it as a precursor to prepare a series of adsorbents and photocatalyst successfully. Zn/Al-LDO-500 adsorbent has a good performance in the removal of Cr (VI),the adsorption capacity can reach 52.45mg/g,and it can be repeated several times to removal the Cr (VI) ions of solutionthrough a simple calcination treatment Zn/Al/Cr-LDO-900 photocatalyst not only efficiently remove the organic contaminants of solution under the ultraviolet light but also restore the Cr (VI) phase within the body. Zn/Fe-LDO-380 adsorbent can purify a large amount of water which contain low concentrations of organic pollutants by the cyclic adsorption unit,1 t Zn/Fe-LDO-380 adsorbent can purify 800 cubic meters of waterone day.Zn/Fe-LDO-500 photocatalyst have better catalytic effect in ultraviolet and visible light. It can remove the 98% of magenta alkaline of water through three hours of UV irradiation, and remove the 86,9% of magenta alkaline of water through three hours of visible irradiation.Because this photocatalyst is magnetic materials, so this photocatalyst relatively easily be recovered.In order to solve the problem that photocataly is difficult to recycle, we prepared the Bi2S3@graphite fibers@plant fibers photocatalytic paper of complicate structure by mixing Bi2S3 and graphite fiber and plant fiber, through use of paper-making technology.After the study foundthat this doping can not only improve the poor photocatalytic effect of pure bismuth sulfide photocatalyst but also can solve the recycle problem of photocatalyst.