( 山東大學(xué) 材料科學(xué)與工程學(xué)院，濟(jì)南 250061)
摘 要: 以尿素、 硫酸鎳為原料， 用均相沉淀法制備了氧化鎳納米線(xiàn)，并通過(guò) X射線(xiàn)衍射(XRD)、 透射電鏡(TEM)及紅外光譜等測(cè)試手段對(duì)所得產(chǎn)物的組成和形貌進(jìn)行了研究。 TEM結(jié)果表明， 所得產(chǎn)物為多晶氧化鎳納米線(xiàn)，直徑和長(zhǎng)度分別為5~15 nm和250~350 nm。 通過(guò)對(duì)前驅(qū)體產(chǎn)物在不同溫度下煅燒，發(fā)現(xiàn)納米線(xiàn)在600 °C分解為顆粒。作為比較， 以尿素為沉淀劑， 用水熱法制得氧化鎳納米粉體， 結(jié)果得到球形和排列整齊的棒狀兩種形態(tài)。
關(guān)鍵字: 氧化鎳；納米線(xiàn)； 均相沉淀法； 水熱法
WEI Hui-ying, HU Chun-xia
（ School of Materials Science and Engineering,
Shandong University, Ji'nan 250061, China）
Abstract: Nickel oxide nanowires were prepared by urea-based homogeneous precipitation process. The structure, morphology and composition of the as precipitated and heat-treated materials were characterized by means of XRD, TEM, and IR spectra analysis. The result of the electron diffraction shows that the NiO nanowires are polycrystalline with 5-15 nm in diameter. The nanowires were broken into particles when calcined at 600 °C. For comparison, the hydrothermal method was also used to prepare NiO nanopowders. As a result, assembled nanocrystals and comb-like nanobars were obtained.
Key words: nickel oxide; nanowire; homogeneous precipitation method; hydrothermal method
