【摘 要】
：
通过静电相互作用获得四氧化三铁(Fe3O4)@水化硅酸钙(CSH)纳米片复合吸附剂,并在此基础上,提出“吸附剂-光催化剂”转变策略:Fe3O4@CSH吸附剂分离废水中有害重金属离子后,回收再利用为光催化剂用于CO2还原.结果 表明:受益于CSH纳米片的超高比表面积和强离子交换能力,Fe3O4@CSH吸附剂能够高效去除重金属离子Zn2+、Cu2+、Co2+、Ni2+、Pb2+,最大吸附量分别为83、142、150、179、343 mg/g;富集重金属离子的Fe3O4@CSH吸附剂在可见光下能够有效还原CO2
【机 构】
：
福州大学材料科学与工程学院,先进材料技术福建省高校重点实验室,福州350108
论文部分内容阅读
通过静电相互作用获得四氧化三铁(Fe3O4)@水化硅酸钙(CSH)纳米片复合吸附剂,并在此基础上,提出“吸附剂-光催化剂”转变策略:Fe3O4@CSH吸附剂分离废水中有害重金属离子后,回收再利用为光催化剂用于CO2还原.结果 表明:受益于CSH纳米片的超高比表面积和强离子交换能力,Fe3O4@CSH吸附剂能够高效去除重金属离子Zn2+、Cu2+、Co2+、Ni2+、Pb2+,最大吸附量分别为83、142、150、179、343 mg/g;富集重金属离子的Fe3O4@CSH吸附剂在可见光下能够有效还原CO2为CO,其中,吸附Ni2+后的Fe3O4@CSH-Ni表现出最佳的催化活性,CO的产率达到3310μmol/(g·h),选择性为99.3％;此外,Fe3O4的磁性有利于吸附和光催化过程中Fe3O4@CSH的快速回收.
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