MXenes are a novel type of two-dimensional (2D) material composed of transition metal carbides, and either nitrides or carbonitrides. MXenes have demonstrated beneficial applications in energy evolution, catalysis/sensing, and biomedical applications.Recently, MXene as an emerging material for adsorption separation and analysis have been reported, however, the selectivity is not good, and adsoprtion rate is low. Here we propose to design and construct a kind of pH and temperature dual-responsive molecularly imprinted hydrogel based on MXene, it combines " high specific surface area of MXene", "high selectivity of molecularly imprinted Polymers (MIP)" , "pH-sensitive and affinity performance of boronate materials" and " stimuli-responsive of smart materials" . The molecularly imprinted hydrogel based on MXene were prepared using N-isopropylacrylamide(NIPAAM) and 4-vinylphenylboronicacid(VPBA) as functional monomers, Ginsenoside Rb1 is used as the template molecule. The effects of Mxene, template molecules, and functional monomers on the structure and performance of MIP hydrogel based on Mxene were investigated. A higher adsorption capacity and imprinting factor of the MIP hydrogel were achieved, and were found to be 25 mg g-1 and 2.36, respectively. In addition, the MIP hydrogel exhibited good selectivity and regeneration capacity. These excellent performances indicate that the obtained MIP hydrogel is a promising candidate for recognition and separation of Ginsenoside Rb1.

Temperature and pH dual-responsive molecularly imprinted hydrogel based MXene for enhanced recognition capability towards Ginsenoside Rb1

ACS Spring Meeting 2021

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