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Highly ordered small pore mesoporous silicas were synthesized by using a mixture of surfactants as a template. The surfactant system comprises short-chain cationic surfactant (decyltrimethylammonium bromide, denoted C10TMAB) and sodium salicylate (sodium o-hydroxybenzoate, denoted SS). Addition of SS into a C10TMAB system can effectively reduce the surfactant head-group repulsion by screening the electrostatic charge, optimizing the surfactant packing, thus facilitating the synthesis of highly ordered small pore mesoporous silicas. [ABSTRACT FROM AUTHOR]