Fig. 3 (IMAGE) Osaka University Caption Sorption test of Co<sup>2+</sup> on sodium titanate mat and commercial reagent as control sample. (a) Sorption isotherm of Co<sup>2+</sup>. SST: sodium titantate mat and TC: control sample. Scanning electron micrograph of (b) sodium titanate mat and (c) control sample after the sorption test. The surface of control sample was covered by precipitates after the sorption test. Credit Osaka University Usage Restrictions None 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.