Hierarchical sea-urchin-shaped manganese oxide microspheres were synthesized via a facile method based on the reaction between KMnO4 and MnSO4 in HNO3 solution at 50 degrees C. The average diameter of the microspheres is similar to 850 nm. The microspheres consist of a core of diameter of similar to 800 nm and nanorods of width similar to 50 nm. The nanorods exist at the edge of the core. The Brunauer-Emmett-Teller surface area of the sea-urchin-shaped microspheres is 259.4 m(2)/g. A possible formation mechanism of the hierarchical sea-urchin-shaped microspheres is proposed. The temperature for 90% conversion of benzene (T-90%) on the hierarchical urchin-shaped MnO2 microspheres is about 218 degrees C. (C) 2013 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.Hierarchical sea-urchin-shaped manganese oxide microspheres were synthesized via a facile method based on the reaction between KMnO4 and MnSO4 in HNO3 solution at 50 degrees C. The average diameter of the microspheres is similar to 850 nm. The microspheres consist of a core of diameter of similar to 800 nm and nanorods of width similar to 50 nm. The nanorods exist at the edge of the core. The Brunauer-Emmett-Teller surface area of the sea-urchin-shaped microspheres is 259.4 m(2)/g. A possible formation mechanism of the hierarchical sea-urchin-shaped microspheres is proposed. The temperature for 90% conversion of benzene (T-90%) on the hierarchical urchin-shaped MnO2 microspheres is about 218 degrees C. (C) 2013 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved
