Synthesis of todorokite-type manganese oxide from Cu-buserite by controlling the pH at atmospheric pressure
Haojie Cui, Xionghan Feng, Wenfeng Tan, Jizheng He, Ronggui Hu, Fan Liu
Microporous and Mesoporous Materials | ELSEVIER SCIENCE BV | Published : 2009
A todorokite-type manganese oxide molecular sieve material was successfully synthesized at atmospheric pressure by refluxing treatment of Cu2+ exchanged Na-buserite (named as Cu-OMS-1). TEM (transmission electron microscope) and HRTEM (high resolution transmission electron microscope) images revealed that this material has a needle-phase crystal morphology with thickness 0.1-1 μm, and the lattice fringes spacing 1.0 nm corresponding to the [1 0 0] plane of the todorokite structure. Such morphological and intergrowth characteristics were similar to those of hydrothermally synthesized todorokites. The Cu-OMS-1 with a chemical composition of Cu0.34MnO2.19 · 1.11H2O, was stable below 400 °C. The..View full abstract
Awarded by National Natural Science Foundation of China
Awarded by National Excellent Doctoral Dissertation of China
This work was supported by the National Natural Science Foundation of China (Grant Nos. 40771102, 40403009) and a Foundation for the Author of National Excellent Doctoral Dissertation of China (No. 200767). The authors gratefully acknowledge the two anonymous reviewers for their helpful comment and suggestion. We thank Dr. Luuk Koopal (Department of Physical Chemistry and Colloid Science, Wageningen University, the Netherlands) for helpful discussions. We are also thankful to Dr. Siebecker Matthew for his kind help on reviewing the final draft and improving the English.