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云师大化工学院龚行教授在《Separation and Purification Technology》发表研究成果

已有 1168 次阅读 2024-7-26 14:43 |个人分类:云师大研究|系统分类:论文交流

2024年7月24日，Elsevier 旗下top期刊《Separation and Purification Technology》在线发表了云南师范大学化学与化工学院高端引进人才龚行教授、湖南湘潭大学蔡昌群教授合作的最新研究成果《Self-supported copper/copper oxide microspheres for efficient electrocatalytic removal of low-concentration nitrate from aqueous solutions》。第一作者单位为云南师范大学化学与化工学院，云南师范大学化学化工学院龚行教授、湖南湘潭大学蔡昌群教授为通讯作者。

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Abstract

Usually, glycoproteins are related to diseases or physiological processes; however, a serious challenge remains in realizing their highly specific recognition and enrichment via an imprinting strategy owing to their large molecular size, water solubility and high flexibility. Herein, we reported novel molecularly imprinted polymers based on a metal–organic framework (MOF) material, which achieved the specific enrichment of the target glycoprotein ovalbumin (OVA) by combining a boronate affinity strategy with directional surface imprinting technique. The MOF skeleton has a large specific surface area, thus resulting in a high loading density for the boric acid group (4.66 %) and a satisfactory adsorption capacity (482.56 mg/g). Boronate affinity strategy and the surface imprinting technique resulted in a high specificity of the target glycoprotein. Surface imprinting led to imprinting sites located on the shallow surface of nanoparticles, thus resulting in a rapid kinetic adsorption equilibrium (20 min). And the presence of an acyl group on phenylboronic acid led to the best enrichment effect under physiological pH (7.4). Furthermore, OVA in the real egg white was successfully analyzed, which confirmed the universality of this strategy.