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나노물질 및 화학반응 연구단
나노물질 및 화학반응 연구단
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Mesoporous In-Sn binary oxides of crystalline framework with extended compositional variation

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Title
Mesoporous In-Sn binary oxides of crystalline framework with extended compositional variation
Author(s)
Jangkeun Cho; Changbum Jo; Jae Won Shin; Seung Hyeon Ko; Ryong Ryoo
Publication Date
2016-07
Journal
MICROPOROUS AND MESOPOROUS MATERIALS, v.228, no., pp.14 - 21
Publisher
ELSEVIER SCIENCE BV
Abstract
Indium-tin oxide is considered a highly promising mixed-metal oxide system, because it shows good performance in various industrial processes. Therefore, it will be of great importance to explore the possibility of obtaining new In-Sn oxides with controlled contents whose properties could be tailored. However, In or Sn content in In-Sn oxides has generally been restricted to <10% because of their low solid solubility into counterpart metal oxide framework. Herein, we report for the first solvothermal synthesis of crystalline mesoporous In-Sn oxides with a broad range of In/Sn ratios and their opto-electrochemical properties. For the synthesis, we use phenolic polymer as a structure-directing agent. Surprisingly, we observe that the phenolic polymer plays a critical role in overcoming their low solubility by manipulating kinetics of crystal nucleation and subsequet growth. As a result, we obtain In-rich rutile SnO2 phase without phase separation with up to 50% In content and Sn-rich rhombohedral In2O3 structure with higher In content. The synthesized materials are highly transparent regardless of In content. The electrochemical properties are sensitive to In content. Our strategy offers possibility of realizing crystalline mesoporous mixed-metal oxides with tunable contents, thus opening a new perspective for the development of optoelectronic materials. © 2016 Elsevier Inc. All rights reserved.
URI
https://pr.ibs.re.kr/handle/8788114/3296
ISSN
1387-1811
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > Journal Papers (저널논문)
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