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yaoyu9115銅蟲 (小有名氣)
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[求助]
VO2 水熱合成的問題
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小弟近期在合成VO2的顆粒,方法是水熱法,V2O5+N2H4.HCl,反應(yīng)溫度250,但是合成出來的是黑綠色溶液,離心無效啊。。。。。 后來加了些堿倒是出深褐色沉淀了,但是洗完烘干以后去做XRD卻是無定形的感覺: 請各位大牛指點迷津 |
專家顧問 (文學(xué)泰斗)
麥麥爸爸愛小牛
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專家經(jīng)驗: +509 |

銅蟲 (小有名氣)
專家顧問 (文學(xué)泰斗)
麥麥爸爸愛小牛
![]() |
專家經(jīng)驗: +509 |

專家顧問 (文學(xué)泰斗)
麥麥爸爸愛小牛
![]() |
專家經(jīng)驗: +509 |
|
多謝啦~剛查了一下: VO2(B): 510 mg vanadium pentoxide (V2O5) and 450 mg oxalic acid (H2C2O4) were dispersed in 40 mL distilled water. After vigorous stirring for 10 min, the suspension was transferred into a 50 mL Teflon-lined stainless steel autoclave and maintained at 200 °C for 2 days. The autoclave was cooled to room temperature naturally. The as-obtained dark green precipitate was washed with distilled water and ethanol for several times and dried at 60 °C under vacuum. 在我這個Supporting里:http://good.gd/2452985.htm |

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