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13Â¥2012-04-08 00:15:18
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gs198653

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shenhuang

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8Â¥2012-04-06 17:01:49
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zhangxb8988

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Both the XRD and XPS analysis confirm that
the as-synthesized sample is pure phase Fe3O4. To support the
result of physical analysis above, a well known spot test25 was
carried out. The spot experiment is based on the fact that Fe2+ in
acidic solution can coordinate with a,a-phenanthroline to form
a soluble, dark red complex while Fe3+ does not react under these
conditions. The spot test was performed for the as synthesized
product, commercial Fe3O4 and commercial Fe2O3.We observed
a dark red color for the as synthesized sample and the
commercial Fe3O4. But, for commercial Fe2O3, a colorless
solution was observed. Thus, the results of the spot tests provide
more evidence that the as synthesized sample is Fe3O4.
9Â¥2012-04-07 11:27:37
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sciencemaji

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ljzxsh

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bzamt

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sxjie2001

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3Â¥: Originally posted by sciencemaji at 2012-04-05 15:29:33:
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sxjie2001

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6Â¥: Originally posted by gs198653 at 2012-04-05 21:48:55:
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sxjie2001

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8Â¥: Originally posted by shenhuang at 2012-04-06 17:01:49:
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ljr_liliyuan

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xiaofeng5838

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1444969103

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xiaofeng5838

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xiaofeng5838

ľ³æ (ÕýʽдÊÖ)


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21Â¥: Originally posted by gxytju2008 at 2013-08-16 20:49:32
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aidobby

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ÒýÓûØÌû:
9Â¥: Originally posted by zhangxb8988 at 2012-04-07 11:27:37
Both the XRD and XPS analysis confirm that
the as-synthesized sample is pure phase Fe3O4. To support the
result of physical analysis above, a well known spot test25 was
carried out. The spot exper ...

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weiwei1983

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