Micromotors that combine the merits of micro-devices with specific functions and autonomous motion have numerous applications in environmental remediation. However, their practical application is blocked by low productivity, complex preparation...

Herein, we demonstrated a novel Fe3O4@MnO2@HKUST-1 magnetic micromotors with excellent peroxidase-like activity for highly efficient colorimetric detection and degradation of hydroquinone. Such micromotors had unique flower-like morphology with high exposed...

LDHs (Layered double hydroxides) has broad application prospects as adsorbent. Herein, a facile bio‐template route was developed using pine pollens to fabricate a novel 3D hierarchical MgFe2O4@MgAl‐LDHs adsorbent for rapid removal of organic pollutant from water. The agglomeration of the LDH sheets was prevented and evenly distributed over the surface of MgFe2O4 which resulting in large surface area (108.660 m2 g−1). The adsorption and regeneration of the adsorbent were examined. The as‐prepared MgFe2O4@MgAl‐LDHs exhibited excellent adsorption capacity (191.20 mg g−1) for Congo Red and still remained 81.61 % (156.03 mg g−1) of the first time after regenerated 3 times with methanol. Additionally, it could be conveniently recycled via an external magnetic field. The high adsorption capacity, easy recycling, and the low‐cost and readily available biomass made MgFe2O4@MgAl‐LDHs attractive for water remediation.