Organo-Modified Montmorillonite Enhanced Chemiluminescence via Inactivation of Halide Counterions in a Micellar Solution

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• 作者：Shuang Chen ; Wenjuan Zhou ; Yuqing Cao ; Congcong Xue ; Chao Lu
• 刊名：Journal of Physical Chemistry C
• 出版年：2014
• 出版时间：February 6, 2014
• 年：2014
• 卷：118
• 期：5
• 页码：2851-2856
• 全文大小：345K
• ISSN：1932-7455

文摘

In this work, it was found that cationic surfactant cetyltrimethylammonium bromide (CTAB)-modified montomorillonite (MMT) can significantly amplify chemiluminescence (CL) from the peroxynitrite system. Transmission electron microscopy (TEM), scanning electron microscope (SEM), powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), 味 potential measurements and differential thermogravimetry (DTG) analyses confirmed the geometrical configuration of CTAB at the surface of MMT. In addition, the enhancement mechanism of CTAB-modified MMT on the peroxynitrite CL was discussed by the CL spectrum, the scavengers of reactive oxygen species, and various controlled experiments. The results indicated that the electrostatic attraction between CTA⁺ cations and MMT could form a CTA⁺ monolayer at the surface of MMT, resulting in the effective removal of halide counterions in the CTAB micellar solution. Therefore, the inactivation of the halide counterion-quenched CL could generate the intense CL emissions. The success of this work has explored a novel route to the applications of clay nanocomposites in CL field.