Highly effective and fast removal of bisphenol A from environmental samples using an eco-friendly surface molecularly imprinted polymer based on MIL-100(Fe)

Abstract

Bisphenol A (BPA) is an endocrine disruptor and poses serious threats to human health, and widespread concern has been raised regarding its effective removal from the environment. In this work, an eco-friendly surface molecularly imprinted composite (MIL-100(Fe)@MIP) was successfully fabricated in the green solvent of water and further achieved the fast and effective removal of BPA. The maximum adsorption capacity of BPA bound to MIL-100(Fe)@MIP was 15.45 mg g⁻¹, and the adsorption behavior was adequately described with the Langmuir model. MIL-100(Fe)@MIP acquired fast adsorption of BPA, and the equilibrium adsorption capacity achieved 95% within 10 min. The adsorption process better matches the pseudo-second-order model. As a solid phase sorbent, MIL-100(Fe)@MIP was successfully applied to rapidly and efficiently remove BPA from five real samples, which included disposable food containers, canned yellow peach, orange juice, soybean milk and teabags, and the recoveries ranged from 80.67% to 100.58%. Furthermore, MIL-100(Fe)@MIP exhibited excellent reusability for 20 cycles. Hence, the developed MIL-100(Fe)@MIP is an eco-friendly and promising adsorbent that can effectively and rapidly remove BPA from the environment.