Abstract SnO2/Sn6O4(OH)4 composites were spontaneously formed by mechanically grinding and subsequently aging SnCl2 and NH4HCO3 powder. Results showed that the ground product consisted of SnCl2·2H2O and NH4Cl. After 1 day of… Click to show full abstract
Abstract SnO2/Sn6O4(OH)4 composites were spontaneously formed by mechanically grinding and subsequently aging SnCl2 and NH4HCO3 powder. Results showed that the ground product consisted of SnCl2·2H2O and NH4Cl. After 1 day of aging treatment, SnCl2·2H2O was spontaneously decomposed to SnO2 and Sn6O4(OH)4. FE-SEM results indicated that these as-synthesized grains had an average size of 60 nm. The photocatalytic degradation activity of this prepared sample to MO was negligible. Adding surfactants, such as SDBS and CTAB, may obviously enhance Sn6O4(OH)4 synthesis. These samples containing a surfactant had a good photocatalytic activity. CTAB had the most obvious promoting effect and could degrade 98% MO within 60 min under visible light irradiation.
               
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