In2O3 Hollow Microspheres: Synthesis from Designed In(OH)3 Precursors and Applications in Gas Sensors and Photocatalysis

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• 作者：Benxia Li ; Yi Xie ; Meng Jing ; Guoxin Rong ; Yecang Tang ; Guangzhao Zhang
• 刊名：Langmuir
• 出版年：2006
• 出版时间：October 24, 2006
• 年：2006
• 卷：22
• 期：22
• 页码：9380 - 9385
• 全文大小：353K
• 年卷期：v.22,no.22(October 24, 2006)
• ISSN：1520-5827

文摘

In this work, well-shaped In(OH)₃ hollow microspheres have been successfully prepared via a novel surfactant-freevesicle-template-interface route in the "formamide-resorcinol-water" system, in which spontaneous vesicles wereformed under hydrothermal conditions and NH₃ from the hydrolysis of formamide acted as the OH^- provider.Morphological and structural characterizations indicate that the shells of as-prepared In(OH)₃ hollow microsphereswere constructed by numerous nanocubes about 80 nm in size. As desired, In₂O₃ hollow microspheres were obtainedfrom annealing the designed In(OH)₃ precursors, and the as-obtained In₂O₃ hollow microspheres performed well asa gas-sensing material in response to both ethanol and formaldehyde gases and as a photocatalyst for photocatalyticdegradation of rhodamine B. The facile preparation method and the improved properties derived from specialmicrostructures are significant in the synthesis and future applications of functional nanomaterials.