Synthesis of layered protonated titanate hierarchical microspheres with extremely large surface area for selective adsorption of organic dyes

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Shuifen Xie
  • Binjie Zheng
  • Qin Kuang
  • Zhaoxiong Xie
  • Lansun Zheng

Detail(s)

Original languageEnglish
Pages (from-to)7715-7720
Journal / PublicationCrystEngComm
Volume14
Issue number22
Publication statusPublished - 21 Nov 2012
Externally publishedYes

Abstract

In this paper, we report a facile synthesis of layered protonated titanate (LPT) hierarchical microspheres through a one step solvothermal reaction in the presence of hexamethylenetetramine (HMTA). Structural characterizations reveal these LPT hierarchical microspheres with a 3D flower-like morphology are built with self-assembled ultrathin nanosheets that are actually composed of several layers or even a monolayer of protonated titanate with an enlarged interlayer spacing. And it is found that these LPT hierarchical microspheres have a certain extent of absorption in the visible region, showing a yellow colour. The changes of such special LPT nanostructures in interlayer spacing and colour should be attributed to the intercalation of NH 4 + or other amino-derivatives generated by the decomposition of HMTA. It is exciting that these LPT hierarchical microspheres possess extremely large surface area, reaching the value of 450 m 2 g -1, and they display specific selectivity towards methylene blue, compared to methyl orange, cresol red and rhodamine B. © 2012 The Royal Society of Chemistry.

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Citation Format(s)

Synthesis of layered protonated titanate hierarchical microspheres with extremely large surface area for selective adsorption of organic dyes. / Xie, Shuifen; Zheng, Binjie; Kuang, Qin et al.
In: CrystEngComm, Vol. 14, No. 22, 21.11.2012, p. 7715-7720.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review