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Issue 35, 2013
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Hierarchical rh-In2O3 crystals derived from InOOH counterparts and their sensitivity to ammonia gas

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Abstract

Constructing novel materials with a hierarchical structure has become an increasingly hot research topic, because the hierarchical structures have wide potential applications in the fields of bionics, electronics, photocatalysis, solar cells, and lithium ion batteries. In this paper, we report on the fabrication of rhombohedral corundum-type indium oxide (rh-In2O3) hierarchical rod-aggregates by annealing oxyhydroxide (InOOH) counterparts prepared through a simple solvothermal route without surfactant. The formation mechanism of the InOOH hierarchical structures is suggested. The rh-In2O3 hierarchical crystals were tested in the role of sensing ammonia gas, and were found to show an excellent gas-sensitivity to NH3 as compared to the cubic bixbyite-type indium oxide (c-In2O3) analogues.

Graphical abstract: Hierarchical rh-In2O3 crystals derived from InOOH counterparts and their sensitivity to ammonia gas

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Publication details

The article was received on 15 Mar 2013, accepted on 24 Jun 2013 and first published on 24 Jun 2013


Article type: Paper
DOI: 10.1039/C3CE40465J
Citation: CrystEngComm, 2013,15, 7003-7009
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    Hierarchical rh-In2O3 crystals derived from InOOH counterparts and their sensitivity to ammonia gas

    H. Jiang, L. Zhao, L. Gai, L. Ma, Y. Ma and M. Li, CrystEngComm, 2013, 15, 7003
    DOI: 10.1039/C3CE40465J

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