Advances in Earth Science ›› 2009, Vol. 24 ›› Issue (10): 1084-1093. doi: 10.11867/j.issn.1001-8166.2009.10.1084

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Progress in the Study of Todorokite

Cui Haojie 1,2, Feng Xionghan 1, Liu Fan 1, Tan Wenfeng 1, Qiu Guohong 1, Chen Xiuhua 1   

  1. 1.Key Laboratory of Subtropical Agricultural Resources and Environment of the  Ministry of Agriculture, Huazhong Agricultural University,Wuhan  430070, China;
    2. Institute of Urban Environment, Chinese Academy of Sciences, Xiamen  361021, China
  • Received:2008-12-29 Revised:2009-07-14 Online:2009-10-10 Published:2009-10-10
  • Contact: Haojie Cui

Cui Haojie, Feng Xionghan, Liu Fan, Tan Wenfeng, Qiu Guohong, Chen Xiuhua. Progress in the Study of Todorokite[J]. Advances in Earth Science, 2009, 24(10): 1084-1093.

       Todorokite is one of common manganese oxides with a basic 3×3 tunnel structure in soils, sediments and ocean Mn nodules. The tunnels in todorokites are partially filled with water molecules and a variety of cations, and the morphology of todorokites mostly consist of plate-, needle-and fiber-shaped crystallites. The transformation of birnessite→buserite→todorokite is an important pathway for todoroktie formation. The influencing factors, such as type and amount of interlayer cation in buserite precursor, the amount of Mn(III) in the structure of layered precursor, the average manganese oxidation state and crystallinities of the precursors, reaction temperature, pH and clay minerals, would affect the formation of todorokite under hydrothermal and refluxing conditions. The influencing effects are apparent for formation of todorokite at atmospheric pressure. These manganese oxide octahedral molecular sieves could be used widely in sorbents, catalysis, separations, chemical sensors, and batteries due to their unique structure and high surface areas.

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