Wu Ke, Du Changwen, Ma Fei, Shen Yazhen, Zhou Jianmin
The State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences Nanjing 210008 China
College of Modern Agricultural Sciences, University of Chinese Academy of Sciences Beijing 100049 China.
RSC Adv. 2019 Oct 10;9(55):32270-32277. doi: 10.1039/c9ra06939a. eCollection 2019 Oct 7.
Although polymer-coated controlled-release fertilizers have been under development for decades, their high costs, complex production processes, and potential environmental hazards have limited their application. Therefore, it is necessary to design and develop new materials for controlled nutrient release. In this study, two novel MOFs, compounds I and II, were successfully fabricated and optimized using ferric chloride, phosphoric acid, citric acid, and urea under hydrothermal conditions. The N, P, and Fe contents in compound I were 9.05%, 14.92%, and 14.55%, respectively, while the corresponding values in compound II were 10.78%, 14.10%, and 16.68%. The soil incubation results revealed that both compounds showed good slow-release longevity (more than 100 days). This study provides a new strategy for the fabrication of novel controlled-release fertilizers.
尽管聚合物包膜控释肥料已经研发了几十年，但其高成本、复杂的生产工艺以及潜在的环境危害限制了它们的应用。因此，有必要设计和开发用于控释养分的新材料。在本研究中，在水热条件下，使用氯化铁、磷酸、柠檬酸和尿素成功制备并优化了两种新型金属有机框架化合物I和II。化合物I中的氮、磷和铁含量分别为9.05%、14.92%和14.55%，而化合物II中的相应值分别为10.78%、14.10%和16.68%。土壤培养结果表明，两种化合物均表现出良好的缓释持久性（超过100天）。本研究为新型控释肥料的制备提供了一种新策略。
