溶剂热法制备的二氧化钛纳米颗粒用不用煅烧?
看文献照做的,原文部分是这样的It was kept under vigorous stirring for one hour and the whole mixture was transferred in a 120 ml Teflonlined stainless steel autoclave maintained at 150 ◦C for 18 h and finally cooled to room temperature naturally. This produced a yellowish white colored product which was centrifuged with DI water
and absolute ethanol for several times. Then the sample was dried at 80 ◦C for 3 h. Finally, the powder was collected and grinded in a mortar and pestle for 1 min to obtain fine powder which was used for further investigation
帮我看看应该是不用再高温煅烧了吧?
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上面文献里面说不用煅烧了。用溶剂热法制备的二氧化钛,一般都有结晶性,所以大部分情况下,都不用再烧。
神啊我昨天又烧了一遍尿素,拿锡纸包着了,一点东西没有,,,
奇怪了,你看一下坩埚是否漏水?要不换个厂家的尿素看看,我试过阿拉丁,国药,北化的尿素,实验重复性都很好。按理说,600度之下都能烧出来,只有高于600度,才全部烧没。炉子温度没啥问题吧。
木有啊我的尿素,,,额九三年的库房找的,,,炉子应该没问题,我换了两个炉子烧了
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换尿素把,可能是尿素的问题。