The hierarchical porous 2MgO·B₂O₃·H₂O (MBO) microsphere has been prepared by a template-free hydrothermal method, which was characterized by XRD, FT-IR, TG, SEM and TEM. The microsphere nanostructure is assembled by nanobelts array with the thickness of 10 nm and width of 10–30 nm. The possible growth mechanism of the 3D hierarchical MBO nanostructure is also proposed. It has been demonstrated that the as-prepared MBO nanostructure has a porous hierarchical structure with a high specific surface area of 93.64 m²/g measured by N₂ adsorption−desorption. It exhibits excellent adsorption performance with maximum adsorption capacity of 183.15 mg/g for Congo red (CR), as well as good recyclability. Moreover, the adsorption process of CR on hierarchical porous MBO was systematically investigated, which was well fitted with the pseudo-second-order rate equation and Langmuir adsorption model. It needs to indicate that the as-prepared hierarchical porous MBO microsphere can be considered as a promising candidate for wastewater treatment.

采用无模板水热法制备了分层的2MgO·B ₂ O ₃ ·H ₂ O（MBO）微球，并通过XRD，FT-IR，TG，SEM和TEM对其进行了表征。微球纳米结构是通过纳米带阵列组装的，其厚度为10 nm，宽度为10–30 nm。还提出了3D分层MBO纳米结构的可能生长机理。已经证明，所制备的MBO纳米结构具有通过N ₂测量的具有93.64m ² / g的高比表面积的多孔分层结构。吸附解吸。它具有出色的吸附性能，对刚果红（CR）的最大吸附容量为183.15 mg / g，并且具有良好的可回收性。此外，系统地研究了CR在分层多孔MBO上的吸附过程，该过程与拟二阶速率方程和Langmuir吸附模型很好地吻合。需要指出的是，这样制备的分级多孔MBO微球可以被认为是废水处理的有前途的候选者。