Figure 3 (IMAGE) Kanazawa University Caption TEM images (a, b) of HSSA MnO2 (MnO2 having a high specific surface area of about 300 m2/g) and photographs (c, d) of the HSSA MnO2 filter supported on alumina honeycomb used in these experiments. MnO2 was laminated onto the alumina honeycomb substrate by the dip coating method. The packing density of MnO2 was 50 g/L of filter Credit Kanazawa University Usage Restrictions The image may only be used with appropriate caption and credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.