7楼: Originally posted by weimeiandy at 2014-06-06 00:48:45
我想知道BET如何能说明是非晶态铜？我做的材料铜在石墨希上的负载才10%，我做了透射和XRD难道不能说明问题吗？这个测出来的比表面积怎么能得知铜是非晶态的呢？求指点
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11楼: Originally posted by RXMCDM at 2014-06-06 07:52:38
BET可用于测颗粒的比表面积、孔容、孔径分布以及氮气吸附脱附曲线。可以确定研究的颗粒的性质。固体有一定的几何外形，借通常的仪器和计算可求得其表面积。但粉末或多孔性物质表面积的测定较困难，它们不仅具有不规 ...

12楼: Originally posted by weimeiandy at 2014-06-06 08:31:00
原文中是这样写的The Cu NPs on the surface of His-G-Cu catalyst were amorphous like worms (Figure 5a and c), which was consistent with the above XRD analysis (Figure 3) because the amorphous copper s ...