请将以下段落以学术的方式翻译成英文：李天乐200等采用乳液共聚法制备了叶酸FA改性的磁性ATP复合微凝胶。Dong等201通过共沉淀法制备一种可回收的磁性ATP吸附剂并用于脱除燃煤烟气中的Hg0。然而针对磁性凹凸棒土并将其应用于烟气脱汞的研究仍然不多而且由于凹凸棒土本身含有较多杂质还存在相关活性物质分散性较差利用率较低脱汞性能有限等问题

Li et al. [200] prepared folic acid (FA)-modified magnetic ATP composite microgels using emulsion copolymerization. Dong et al. [201] synthesized a recyclable magnetic ATP adsorbent via co-precipitation method and applied it in the removal of Hg0 from coal-fired flue gas. However, there are still few studies on the application of magnetic bentonite in mercury removal from flue gas, and due to the high impurity content and poor dispersibility of relevant active substances in bentonite, the utilization rate and mercury removal efficiency are limited.