One-Step Preparation of Phenyl Boron-Modified Magnetic Mesoporous Silica for Selective Enrichment of cis-Diol-Containing Substances

• Published in: Molecules (Basel, Switzerland) Vol. 23; no. 3; p. 603
• Main Authors: Fu, Hua, Hu, Jing, Zhang, Min, Wang, Yuerong, Zhang, Hongyang, Hu, Ping
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 07.03.2018; MDPI
• Subjects: Adenosine; Adsorption; Boron; Boron - chemistry; Bovine serum albumin; cis-diol-containing substance; Enrichment; Guanine; Hydrogen-Ion Concentration; Magnetic fields; magnetic solid-phase extraction; Magnetism; Magnetite Nanoparticles - chemistry; Magnetite Nanoparticles - ultrastructure; Nanomaterials; Nanoparticles; one-step preparation; phenylboronic acid; Pore size; Porosity; selective enrichment; Separation; Serum albumin; Silica; Silicon Dioxide - chemistry; Solid Phase Extraction; Spectroscopy, Fourier Transform Infrared; Teicoplanin; Temperature; Uric acid; Uridine; X-Ray Diffraction; magnetic solid-phase extraction; cis-diol-containing substance; selective enrichment; phenylboronic acid; one-step preparation
• ISSN: 1420-3049; 1420-3049
• DOI: 10.3390/molecules23030603

For enrichment and separation of -diol-containing compounds from biomatrix, a new type of magnetic nanoparticles named MS-48-PBSC, whichwas facilely prepared in a one-step heterogeneous reaction. The morphology results demonstrated that the MS-48-PBSC was a spherical nanomaterial containing a core of silica-coated magnetic particle with a diameter of about 200 nm, and a cover layer of mesoporous silica with a thickness of approximate 50 nm. The characterization results showed that MS-48-PBSC presented a pore size of 4.2 nm, a surface area of 548 m²·g , and a pore volume of 0.30 cm³·g . The MS-48-PBSC also exhibited magnetism of 42 emu·g that contributed to the easy separation of magnetic nanomaterial within 30 s from the matrix with the aid of the external magnetic field. In addition, the MS-48-PBSC exhibited high adsorption capacity for adenosine, xanthosine, uridine, sialic acid, and teicoplanin with 0.60, 0.51, 0.42, 0.75, and 1.26 mg/g, respectively, and showed a high selectivity for the -diol structure compounds, relative to interferences of bovine serum albumin, guanine, uric acid, and xanthine. The recoveries of adenosine, xanthosine, uridine, sialic acid, and teicoplanin were 71.8-114.1% with relative standard deviation (RSD) ≤ 8.6%, and the enrichment factors of them were 8-11. MS-48-PBSC exhibited quick separation capability from matrix, high adsorption capacity and size exclusion for bovine serum albumin, which could meet the requirements of separation and enrichment for substances with a -diol structure.