Microwave synthesis of chain-like zircona nanofibers through carbon-induced self-assembly growth

doi:10.1007/s11706-017-0397-5

Front. Mater. Sci.

2017, Vol. 11

Issue (4) : 353-357 https://doi.org/10.1007/s11706-017-0397-5

RESEARCH ARTICLE

Microwave synthesis of chain-like zircona nanofibers through carbon-induced self-assembly growth

Wanyu ZHAO¹, Jian LI¹, Bingbing FAN¹(

), Gang SHAO¹, Hailong WANG¹, Bozhen SONG¹, Shengnan WEI¹, Rui ZHANG^1,²(

)

¹. School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
². Henan Key Laboratory of Aeronautical Material and Application Technology, Zhengzhou University of Aeronautics, Zhengzhou 450046, China

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Abstract

Chain-like zircona (ZrO₂) nanofibers were prepared by microwave sintering without any surfactants or solid templates. Microwave sintering was conducted in a multimode microwave cavity with TE666 resonant mode at 2.45 GHz. Carbon particles were used to activate unique thermal processes when mixed with ZrO₂ precursor. The sintering condition was at 1300°C for 10 min. Samples were characterized by XRD, SEM, TEM techniques. It was found that both monolithic and tetragonal ZrO₂ co-existed in samples prepared from the mixture of ZrO₂ precursors and carbon by either microwave or conventional sintering. Only m-ZrO₂ exists in samples prepared by ZrO₂ precursors without carbon. ZrO₂ appeared as chain-like nanofibers, which might be attributed to a so-called carbon-induced self-assembly growth mechanism.

Keywords ZrO₂ chain-like nanofibers microwave sintering carbon-induced self-assembly growth

Corresponding Author(s): Bingbing FAN,Rui ZHANG

Online First Date: 31 October 2017 Issue Date: 29 November 2017

Cite this article:

Wanyu ZHAO,Jian LI,Bingbing FAN, et al. Microwave synthesis of chain-like zircona nanofibers through carbon-induced self-assembly growth[J]. Front. Mater. Sci., 2017, 11(4): 353-357.

URL:

https://academic.hep.com.cn/foms/EN/10.1007/s11706-017-0397-5
https://academic.hep.com.cn/foms/EN/Y2017/V11/I4/353

Fig.1 Practical heating profiles and corresponding reflected power changes of Samples A and C by the microwave sintering.

Fig.2 XRD patterns of Samples A, B and C.

Fig.3 SEM images of (a) Sample A, (c) Sample B and (d) Sample C, and (b) the EDS pattern of Sample A.

Fig.4 TEM images and the HRTEM image (inset) of Sample A.

Fig.5 A schematic illustration of the microwave sintering procedure for generating chain-like ZrO₂ nanofibers.

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