Microwave synthesis of chain-like zircona nanofibers through carbon-induced self-assembly growth
Wanyu ZHAO, Jian LI, Bingbing FAN, Gang SHAO, Hailong WANG, Bozhen SONG, Shengnan WEI, Rui ZHANG
Microwave synthesis of chain-like zircona nanofibers through carbon-induced self-assembly growth
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.
ZrO2 / chain-like nanofibers / microwave sintering / carbon-induced / self-assembly growth
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