Piperazine functionalized mesoporous silica for selective and sensitive detection of ascorbic acid

被引：5

作者：

Sachdev, Divya ^{[1
]}

Maheshwari, Priyanka H. ^{[2
]}

Dubey, Amit ^{[3
]}

机构：

[1] Natl Inst Food Technol Entrepreneurship & Managem, Sonipat, India

[2] CSIR, Natl Phys Lab, Dr KS Krishnan Rd, New Delhi 110012, India

[3] MANIT, Dept Chem, Bhopal 462051, MP, India

来源：

JOURNAL OF POROUS MATERIALS | 2016年 / 23卷 / 01期

关键词：

Mesoporous silica; Functionalization; Piperazine; Ascorbic acid; Electrocatalytic activity; Differential pulse voltammetry; QUARTZ-CRYSTAL MICROBALANCE; GLASSY-CARBON ELECTRODE; VITAMIN-C; VOLTAMMETRIC SENSOR; PASTE ELECTRODE; ELECTROCHEMICAL SENSOR; FOOD SAMPLES; THIN-FILMS; URIC-ACID; NANOPARTICLES;

D O I：

10.1007/s10934-015-0061-3

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Ordered mesoporous silica SBA-15 functionalized with piperazine (SBA/Pip) was synthesized via grafting method. Incorporation of piperazine inside the mesopores without affecting the stability of the ordered mesoporous silica could be viewed from different characterization techniques such as Powder X-ray diffraction, N-2 sorption studies, Fourier-Transform Infrared spectroscopy, Scanning Electron microscopy, Transmission Electron Microscopy. The SBA/Pip nanocomposite was employed as an electrochemical sensor to detect the presence of ascorbic acid ranging from millimolar to nanomolar range via differential pulse voltammetry (DPV) in the potential window of -1.5 to + 1.5 V wherein the scan rate was maintained at 4 mV/s. Further SBA/Pip displayed selective detection of ascorbic acid in packed and fresh orange juice without any interference from other acids like citric acid commonly present in packed juice.

引用

页码：123 / 129

页数：7

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