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首页> 外文期刊>Advanced Functional Materials >Functionalized Cubic Mesoporous Silica as a Non- Chemodosimetric Fluorescence Probe and Adsorbent for Selective Detection and Removal of Bisulfite Anions along with Toxic Metal Ions
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Functionalized Cubic Mesoporous Silica as a Non- Chemodosimetric Fluorescence Probe and Adsorbent for Selective Detection and Removal of Bisulfite Anions along with Toxic Metal Ions

机译：功能化的立方介孔二氧化硅作为非化学计量荧光探针和吸附剂，用于选择性检测和除去亚硫酸氢根阴离子以及有毒金属离子

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1704726.1-1704726.17%Dual signaling and remediation systems for detection and adsorption of toxic analytes have gained more attention over sensory probes only. However, most of the sensors for bisulfites are chemodosimetric probes, which are irreversible and having drawbacks of absolute selectivity, recyclability, and solubility in a pure aqueous system. To address above drawbacks a new non-chemodosimetric probe material with a strong hydrogen bonding pocket for bisulfites is developed. Synthesis of cubic mesoporous silica by a modified Stober process followed by functionalization with 2,2'-(((((3-(triethoxysilyl) propyl) azanediyl) bis(methylene)) bis(2,1-phenylene)) bis(oxy)) bis(N-(4-((E)phenyldiazenyl) phenyl) acetamide) (AZOL) has given a fluorogenic silica probe material SiO2@AZOL. This material shows selectivity toward bisulfite anion (limit of detection (LOD): 64 ppb) and Hg2+, Cd2+, Cu2+, and Zn2+ cations (LOD: 126, 95, 14, and 27 ppb, respectively) among various analytes. The adsorption studies for these toxic analytes (HSO3,- Hg2+, Cd2+, Cu2+, and Zn2+) show an extraction efficiency of around 99% and adsorption capacities of 873, 630, 633, 260, and 412 mg g(-1), respectively. Spectroscopic studies along with adsorption, striping, and regeneration studies reveal that this material is a recyclable sensory cum adsorbent material for these toxic analytes. Moreover, this material can be used as a sensitive probe material for determination of HSO3- levels in various sugar samples.
机译：1704726.1-1704726.17％用于检测和吸附有毒分析物的双重信号和补救系统已经比仅感官探针引起了更多关注。然而，大多数用于亚硫酸氢盐的传感器是化学计量探针，其不可逆且具有绝对选择性，可回收性和在纯水系统中的溶解度的缺点。为了解决上述缺点，开发了一种新的非化学计量探针材料，其具有用于亚硫酸氢盐的牢固的氢键结合口袋。通过改进的Stober工艺合成立方中孔二氧化硅，然后用2,2'-（（（（（（（3-（三乙氧基甲硅烷基）丙基）氮杂二烷基）双（亚甲基））双（2,1-亚苯基））官能化））双（N-（4-（（E）苯基二氮烯基）苯基）乙酰胺）（AZOL）提供了一种荧光二氧化硅探针材料SiO2 @ AZOL。该材料在各种分析物中显示出对亚硫酸氢根阴离子（检测限（LOD）：64 ppb）和Hg2 +，Cd2 +，Cu2 +和Zn2 +阳离子（LOD：分别为126、95、14和27 ppb）的选择性。对这些有毒分析物（HSO3，-Hg2 +，Cd2 +，Cu2 +和Zn2 +）的吸附研究表明，提取效率约为99％，吸附量分别为873、630、633、260和412 mg g（-1）。 。光谱研究以及吸附，剥离和再生研究表明，这种材料是这些有毒分析物的可回收的感官兼吸附材料。此外，该材料可用作确定各种糖样品中HSO3-水平的敏感探针材料。

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