Zhang Xintong, Wang Wei, Dai Shiyu, Cui Fuyi
School of Environment, Harbin Institute of Technology Harbin 150090 P. R. China
College of Urban Construction and Environmental Engineering, Chongqing University Chongqing China.
RSC Adv. 2018 Mar 27;8(21):11754-11763. doi: 10.1039/c8ra01519h. eCollection 2018 Mar 21.
Both phosphate and organic carbon can serve as nutrients for microorganism growth. Simultaneous removal of both nutrients would realize the antibacterial strategy of nutrient starvation better to ensure water quality safety. In addition, a short treatment time is the premise for the application of a material in water treatment. Herein, carbon-coated lanthanum nanorods with a uniform distribution of La and C (C-La-MOF) were rationally prepared through glucose and La-MOF hydrothermal treatment and further carbonization to synchronously and rapidly remove phosphate and organic matter. The carbon layer thickness was tuned by varying the hydrothermal time to find the optimal balance between excellent phosphate intake and low lanthanum leakage. C-La-MOF had a strong anti-interference ability and high phosphate capture capacity over a wide pH range of 2-12. Impressively, when phosphate and organic carbon coexisted in solution, their removal performances remained relatively unchanged compared with that when the two nutrients existed independently, and their adsorption equilibriums could be easily reached within 10 min. All of the above results prove that C-La-MOF is a promising material for practical drinking water treatment.
磷酸盐和有机碳都可以作为微生物生长的营养物质。同时去除这两种营养物质将更好地实现营养饥饿的抗菌策略，以确保水质安全。此外，短处理时间是材料应用于水处理的前提。在此，通过葡萄糖和镧基金属有机框架（La-MOF）水热处理并进一步碳化，合理制备了镧和碳均匀分布的碳包覆镧纳米棒（C-La-MOF），以同步快速去除磷酸盐和有机物。通过改变水热时间来调节碳层厚度，以在优异的磷酸盐摄取和低镧泄漏之间找到最佳平衡。C-La-MOF在2-12的宽pH范围内具有很强的抗干扰能力和高磷酸盐捕获能力。令人印象深刻的是，当磷酸盐和有机碳在溶液中共存时，与两种营养物质独立存在时相比，它们的去除性能保持相对不变，并且它们的吸附平衡可以在10分钟内轻松达到。上述所有结果证明C-La-MOF是一种有前途的用于实际饮用水处理的材料。
