257047.fig.008a
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257047.fig.008b
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257047.fig.008c
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Figure 8: Some examples of surfactants of different chemical nature. Left: ionic surfactants (CTAB would belong to this category); Center: zwitterionic surfactant; right: nonionic surfactants. For an extensive list of surfactants commonly used in mesoporous materials synthesis please refer to the excellent review by Wan and Zhao [194].