課題組蔣茹博士最新研究成果“Magnetically separable Fe3O4/BiOBrmicrospheres: synthesis, characterization and its photocatalytic performance for removal of anionic azo dye”在《Environmental Engineering Science》期刊上發(fā)表。《Environmental Engineering Science
》在2018年中科院分區(qū)中為三區(qū)SCI期刊。
上述工作得到了國家自然科學基金(51208331)和浙江省自然科學基金（LY14B070011 & LY15E080002）、國家留學基金委員會和臺州市科技計劃項目的資助。
Abstract：Recyclable magnetic Fe3O4/BiOBr microspheres (m-Fe3O4/BiOBr MSs) were synthesized by a simple solvethermal method. The crystals, optical, morphology, and magnetic properties of m-Fe3O4/BiOBr MSs were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive analysis of X-rays (EDX), UV–vis diffuse reflectance spectroscopy (DRS),
Brunauer–Emmett–Teller (BET), and vibrating sample magnetometry (VSM) techniques. An anionic dye, i.e. Congo red (CR), was selected as a model pollutant to evaluate the photocatalytic activity of m-Fe3O4/BiOBr MSs under simulated solar light irradiation. By calculation, the pseudo-first order rate constant for photocatalytic degradation of CR was 0.0011 and 0.0046 min?1 using pure BiOBr MSs and m-Fe3O4/BiOBr MSs, respectively. The enhanced photocatalytic activity of m-Fe3O4/BiOBr MSs can result from superior adsorption and transfer performance to organic contaminants in aqueous system. Both the h+ radicals and O2?? radicals were the two main active species that drive the photocatalytic decolorization of CR solution by m-Fe3O4/BiOBr MSs. What is more, the m-Fe3O4/BiOBr MSs can be easily recovered and recycled after the treatment process because of the presence of magnetic Fe3O4. This work suggests that m-Fe3O4/BiOBr MSs may be a promising photocatalyst for photocatalytic treatment of organic wastewater and other environmental remediation.