对银纳米粒子进行TEM表征时，为什么要将它滴在碳膜涂层的铜网上？

不滴在有碳膜的一面怎么行呢？铜网的孔径相对于纳米材料是巨大的。况且有没有碳膜很好区分的，说的俗一点，就是有碳膜的看起来像是用铅笔在铜网上涂过一样。反正我做了这么久的TEM，制样时都是滴在有碳膜的一侧。

利用非共价修饰的方法,先在碳纳米管表面包裹上表面活性剂十六烷基三甲基溴化铵(CTAB)和聚丙烯酸钠(PAA),然后原位修饰上铜和银纳米粒子,制备出MWCNT/CTAB/PAA/M(M:Cu或AS)纳米复合材料,最后通过XRD、SEM和TEM等技术对其进行表征.结果表明,利用这种简单的层层白组装方法能够在碳管上均匀地修饰金属纳米粒子,并且这两种金属纳米粒子的尺寸都小于5

nm.

This article take the cerium nitrate and the phosphoric acid as a raw material, uses a precipitation method preparation cerous phosphate nanometer fluid. Using XRD, TEM, method and so on SEM, studied the reactant density, added by drops the way, the dispersing agent, stirs condition and so on way, reaction temperature to the cerous phosphate nanometer fluid performance influence. The result indicated that, Uses the precipitation method to be possible to prepare a cerous phosphate nanometer fluid, prepares cerous phosphate for acicular, diameter approximately 40-50nm, length approximately 1 mu mWhen the reactant density is 0.2M, the cerous phosphate nanometer fluid stability is bestJoins dispersing agent CTAB, the nanometer fluid dispersible effect is bestSupersonic stirs the effect to have to be good to the magnetic force stirsWhen the reaction temperature is 35 ℃ ~ 40 ℃, the nanometer fluid stability is betterThe cerous phosphate nanometer fluid viscosity increases along with the solid content increases, under the similarly solid content adds the viscosity which CTAB a cerous phosphate nanometer fluid compares does not add to have to be big. Key word: Nanometer fluid cerous phosphate appearance viscosity

.....大概的 !!!也不保证语法真确

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