School of Life Science, Shaoxing University, Shaoxing, 312000, People's Republic of China.
Environ Sci Pollut Res Int. 2021 Oct;28(39):55176-55185. doi: 10.1007/s11356-021-14835-0. Epub 2021 Jun 15.
The novel biochar supported by starch and nanoscale iron sulfide (SFeS@Biochar) composites were successfully prepared through coupling of biochar derived from peanut shell with nanoscale ferrous sulfide and starch under nitrogen atmosphere. It had the advantages of biochar, starch, and nanoscale ferrous sulfide. Therefore, it could overcome some shortcomings. The nanoscale ferrous sulfide particles and starch were thought to be loaded successfully on the surface of the biochar by SEM, EDS, BET, XRD, FT-IR, and XPS techniques. High uptake capacity of U(VI) by SFeS@Biochar could be attributed to reactive reaction of FeS nanoparticles and adsorptive of a lot of functional groups. The proposed reaction mechanisms of the U(VI) uptake by SFeS@Biochar were electrostatic attraction, surface complexation, precipitation, and reductive reaction. It also might be an improved environmentally friendly material for U(VI) removal.
通过在氮气气氛下将花生壳衍生的生物炭与纳米硫化亚铁和淀粉偶联，成功制备了由淀粉和纳米硫化亚铁支撑的新型生物炭复合材料（SFeS@Biochar）。它具有生物炭、淀粉和纳米硫化亚铁的优点。因此，它可以克服一些缺点。通过 SEM、EDS、BET、XRD、FT-IR 和 XPS 技术，认为纳米硫化亚铁颗粒和淀粉已成功负载在生物炭表面上。SFeS@Biochar 对 U(VI) 的高吸附容量可归因于 FeS 纳米粒子的反应性和大量官能团的吸附。提出了 SFeS@Biochar 对 U(VI) 的吸附反应机制为静电吸引、表面络合、沉淀和还原反应。它也可能是一种用于去除 U(VI) 的改良的环保材料。
