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Pyrene-Functionalized Silsesquioxane as Fluorescent Nanoporous Material for Antibiotics Detection and Removal
Microporous and Mesoporous Materials ( IF 5.2 ) Pub Date : 2020-03-03 , DOI: 10.1016/j.micromeso.2020.110135
Huizhong Yang , Hongzhi Liu

The synthesis of a hybrid nanoporous material is achieved by following Friedel-Crafts reaction between octavinylsilsesquioxane and pyrene using AlCl3 as the catalyst. The hybrid nanoporous material is characterized by IR, solid 13C and 29Si NMR. In addition, nitrogen adsorption/desorption measurement at 77K reveals that the hybrid nanoporous material possesses a high surface area of 1300 m2 g-1 and a bimodal pore distribution on the order of 1.41 and 4.15 nm, respectively. The macroscopic structure is amorphous under PXRD while FE-SEM and HR-TEM micrographs feature aggregates of nanosize particles. The efficacy of Py-HPP has been studied for the detection and removal of antibiotics, namely, berberine chloride hydrate (BCH), tetracycline hydrochloride (TH), and mafenide hydrochloride (MH) using fluorescence spectroscopy. The fluorescence quenching phenomenon of the primitive material (λem = 450 nm; λex = 372 nm), upon interaction with the analytes separately, allows to delineate and compare the adsorption kinetics and adsorption capacity. The study reveals that Py-HPP possesses the highest and lowest adsorption capacity for BCH (330mg/g) and MH (165mg/g) while that of TH lies in the intermediate range (195mg/g). The result suggests its potential for the remediation of antibiotic contaminants from water.



中文翻译:

yr功能化倍半硅氧烷作为荧光纳米孔材料的抗生素检测和去除

杂化纳米多孔材料的合成是通过在八乙烯基硅倍半氧烷与Fried之间进行的Friedel-Crafts反应(使用AlCl 3作为催化剂)完成的。该杂化纳米多孔材料的特征在于IR,固体13 C和29 Si NMR。此外,在77K的氮吸附/解吸测量结果表明,杂化纳米多孔材料具有1300 m 2 g -1的高表面积双峰孔分布分别为1.41和4.15 nm。在PXRD下,宏观结构是无定形的,而FE-SEM和HR-TEM显微照片则具有纳米颗粒的聚集体。研究了Py-HPP用于检测和去除抗生素的功效,即使用荧光光谱法检测和去除水合小ber碱氯化物(BCH),四环素盐酸盐(TH)和盐酸马芬尼盐酸盐(MH)。原始材料的荧光猝灭现象(λem = 450 nm;λex(= 372nm),当分别与分析物相互作用时,可以描绘和比较吸附动力学和吸附能力。研究表明,Py-HPP对BCH(330mg / g)和MH(165mg / g)的吸附能力最高和最低,而TH在195mg / g的中等范围。结果表明,它具有从水中修复抗生素污染物的潜力。

更新日期:2020-03-03
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