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dingjiajian新蟲 (小有名氣)
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[求助]
英翻漢
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The stability of most metal sols against aggregation is largely a kinetic effect due to the large Coulombic repulsive barrier resulting from the localization of charged particles on or near the nanoparticle’s surface, making the effective charge on the nanoparticle nonzero. It has been known for some time, moreover, that the addition of ionic or neutral species to a stable sol can result in the destabilization of the colloid through one of a number of mechanisms, which may vary according to the concentration of the added material. Specifically, the mechanism for replacing a charged adsorbate with a neutral species at the surface of the colloid particle has been proposed before.2,3 (There are several other ways of stabilizing colloidal particles, such as steric stabilization. These have been the subject of numerous publications,but are not pertinent here.) 幫忙翻譯下，謝謝。 |
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金蟲 (正式寫手)
- 翻譯EPI: 15
- 應(yīng)助: 0 (幼兒園)
- 金幣: 1305.4
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- 注冊: 2012-10-04
- 專業(yè): 元素化學(xué)
【答案】應(yīng)助回帖
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dingjiajian: 金幣+2, 翻譯EPI+1, ★有幫助 2016-01-16 18:53:44
dingjiajian: 金幣+2, 翻譯EPI+1, ★有幫助 2016-01-16 18:53:44
| 金屬溶膠不易團(tuán)聚的穩(wěn)定定性主要是一種動力學(xué)效應(yīng)，該效應(yīng)是由于納米顆粒表面或附近的帶電粒子產(chǎn)生了很大的庫倫排斥勢壘所造成，從而使納米顆粒的非零電位有了有效電荷。同時，溶膠中加入的離子性或中性物質(zhì)會導(dǎo)致膠體的不穩(wěn)定性，其機(jī)理可能與加入物質(zhì)的濃度有關(guān)。具體而言，膠體粒子表面的中性物取代帶電的吸附物機(jī)理之前已被提出。(有些穩(wěn)定膠體粒子的其他方法，如空間位阻穩(wěn)定法。這些方法已在很多文獻(xiàn)中已被討論，但這里不做論述) 外行 盡請指正 |
2樓2016-01-16 00:17:22
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