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One-step synthesis technique of mesoporous SBA-15 type silica with thiourea Si(CH 2 ) 3 NHC(S)NHC 2 H 5 groups in the surface layer was developed. According to elemental analysis, the content of surface groups is 1.25mmol/g, which is consistent with TGA data. FT-IR spectra of the obtained sample contain characteristic absorption bands of thiourea groups (NHC(S)NH),...