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課題組朱華躍博士最新研究成果在SEPARATION AND PURIFICATION TECHNOLOGY期刊上發(fā)表。

   課題組朱華躍博士最新研究成果“Magnetically recyclable Fe3O4/Bi2S3 microspheres for effective removal of Congo red dye by simultaneous adsorption and photocatalytic regeneration”在SEPARATION AND PURIFICATION TECHNOLOGY期刊上發(fā)表。《SEPARATION AND PURIFICATION TECHNOLOGY》2017年影響因子3.359,中科院分區(qū)為二區(qū)SCI。

   上述工作得到了國(guó)家自然科學(xué)基金(51208331)和浙江省自然科學(xué)基金(LY14B070011 & LY15E080002)、國(guó)家留學(xué)基金委員會(huì)和浙江省植物進(jìn)化生態(tài)學(xué)與保護(hù)實(shí)驗(yàn)室的資助。

Abstract: Novel magnetic bayberry-like Fe3O4/Bi2S3 microspheres (Fe3O4/Bi2S3 MSs) combining highly effective adsorption and photocatalytic regeneration were prepared by a facile hydrothermal method. The resultant Fe3O4/Bi2S3 MSs were characterized by XRD, SEM, EDS, VSM, BET and DRS. Fe3O4/Bi2S3 MSs possessed a relative large surface area of 36.0 m2 g_1 and narrow pore size distribution around 4.72 nm. The equilibrium and kinetics of adsorption process followed the Langmuir isotherm model and pseudo-secondorder kinetic model, respectively. Maximum adsorption capacity of CR as 92.24 mg g_1 was achieved on Fe3O4/Bi2S3 MSs, while only 66.28 mg g_1 was found on Bi2S3 MSs. High saturation magnetization, low coercivity and remnant magnetization values of Fe3O4/Bi2S3 MSs indicated that easy separation and fast re-dispersion in aqueous solution can be realized. What’s more important, Fe3O4/Bi2S3 MSs with a stronger absorption in the visible light region can be regenerated by photocatalysis under simulated solar light irradiation. Fe3O4/Bi2S3 MSs also showed excellent stability and reusability for continuous removal of Congo red dye by synergistic adsorption and photocatalytic regeneration. As a result, Fe3O4/Bi2S3 MSs provided effective and conveniently recyclable materials for environmental remediation by means of providing the facile preparation, easy magnetic separation, high adsorption, and simple regeneration.


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