4.7 Article

In2O3 microbundles constructed with well-aligned single-crystalline nanorods: F127-directed self-assembly and enhanced gas sensing performance

期刊

JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 354, 期 1, 页码 89-93

出版社

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2010.10.033

关键词

Indium oxide; Microbundle; Pluronic F127; Micelle; Gas sensor; Chloroethanol

资金

  1. National Natural Science Fund of China [NSFC 50972083, 91023011, 21075077]
  2. Independent Innovation Foundation of Shandong University [IIFSDU-2009JQ011]
  3. Chinese Ministry of Education [109098]
  4. National Basic Research Program of China (973 Program) [2005CB623601, 2007CB936602]

向作者/读者索取更多资源

Hierarchical In2O3 rod-like microbundles were fabricated via the Pluronic F127-(EO106PO70EO106-) assisted hydrothermal reaction followed by calcining the In(OH)(3) precursors. The results revealed that the In2O3 microarchitectures were constructed with well-aligned one-dimensional (1D) single-crystalline nanorods with highly uniform morphologies and particular exposed facets. Structural analysis suggested that the In2O3 nanorods were enclosed by {1 1 0} and {0 0 1} facets. The triblock copolymer acted as a structure-directing agent and played a key role in the formation of In(OH)(3) microbundles. The formation of the precursors In(OH)(3) microbundles was studied through contrastive experiments and computational simulation, which can be contributed to the soft-template-directed self-assembly mechanism. The gas sensing properties of the as-prepared In2O3 microbundles were investigated. Compared to the samples prepared in the absence of F127, the In2O3 microbundles exhibited a superior sensing performance toward 2-chloroethanol vapor, which can be explained by hierarchically ordered structures and exposed crystal surfaces. (C) 2010 Elsevier Inc. All rights reserved.

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