Template synthesis of tin-doped indium oxide (ITO)/polymer and the corresponding carbon composite hollow colloids
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SnO2, In2O3, and Sn-doped In2O3 (ITO)/polymer and the corresponding carbon composite hollow colloids are template synthesized. It is essential that the sulfonated gel shell of the cross-linked polystyrene hollow colloid can favorably induce adsorption of target precursors. After being calcined in air to remove the template, SnO2, In2O3, and ITO hollow colloids are obtained. Because the cross-linked polymer gel can be transformed into carbon in nitrogen at higher temperature such as 800 °C, metal oxide/carbon hollow colloids are consequently derived, whose shells are mesoporous. The SnO2-, In2O3-, and ITO-containing polymer or carbon composite hollow colloids will be promising in sensors, catalysts, and fuel cells as electrode materials.
KeywordsHollow colloid Polymeric gel Template synthesis Metal oxide Carbon
We thank financial support by the NSF of China (50573083, 50325313, 20128004, and 90206025), Chinese Academy of Sciences, and the China Ministry of Science and Technology (2004-01-09, KJCX2-SW-H07, and 2003CB615600).