Synthesis of yolk-shell magnetic magnesium silicate with tunable yolk morphology for removal of methylene blue in water

Yolk-shell structures have attracted intensive interest owing to their unique structure and promising applications in various fields. In this study, we report a facile, effective route to prepare tubular/spindle mesoporous yolk-shell magnetic magnesium silicate. The yolk morphology and shell thickness can be readily tunable by varying the experimental conditions. The as-synthesized products have large specific surface and unique mesoporous structure. The adsorption capacities of tubular and spindle mesoporous yolk-shell magnetic magnesium silicate for methylene blue are 188 and 141 mg/g, respectively.