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高興星期五鐵桿木蟲 (著名寫手)
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通過分析認(rèn)為，β-CD和PVA作為模板時，形成特殊形貌碳酸鑭的機(jī)理是相同的，都是碳酸鑭在特定基團(tuán)上吸附、成核、生長，高溫時，不同碳酸鑭晶面的表面能差異增大，使晶體沿一維方向生長；棉花作為模板時，棉花本身的結(jié)構(gòu)為晶體的生長提供了一個有效的中心，晶體就在這個有效的中心內(nèi)形成，生成特定形貌的碳酸鑭。 添加有機(jī)物時制備的碳酸鑭均比不添加有機(jī)物制備的磷結(jié)合效果好 |
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2樓2010-06-02 00:23:55
★
高興星期五(金幣+40, 翻譯EPI+1):還有一句話沒反應(yīng)，這段話下面的那句，非常感謝 2010-06-02 09:15:03
wypward(金幣+1):歡迎新蟲 2010-06-02 12:51:29
高興星期五(金幣+40):謝謝啦，O(∩_∩)O~ 2010-06-03 08:50:05
高興星期五(金幣+40, 翻譯EPI+1):還有一句話沒反應(yīng)，這段話下面的那句，非常感謝 2010-06-02 09:15:03
wypward(金幣+1):歡迎新蟲 2010-06-02 12:51:29
高興星期五(金幣+40):謝謝啦，O(∩_∩)O~ 2010-06-03 08:50:05
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The analysis indicates that, when β-CD and PVA were used as templates, the formation of the lanthanum carbonate with particular morphologies has the same mechanism. For both cases, the lanthanum carbonate adsorbs, nucleates, and grows on specific radicals. At high temperatures, the difference in the energies of different surfaces of the lanthanum carbonate increases, leading to a one-dimensional growth. When the cotton was used as the template, the structural features of the cotton itself provide effective growth centers for the crystals, which form in the effective growth centers, leading to the lanthanum carbonate of particular morphologies. The lathanum carbonate prepared with organic compounds has better "phosphor-binding" effects than that prepared without organic compounds. Note: not sure about 磷結(jié)合效果. [ Last edited by mingxing on 2010-6-2 at 22:03 ] |
3樓2010-06-02 00:44:38
| Through analysis, β-CD and PVA as a template to form a special morphology of the mechanism of lanthanum carbonate is the same, are lanthanum carbonate group on a specific adsorption, nucleation, growth, high temperature, different crystal planes of lanthanum carbonate surface energy difference increase, so that crystal growth along one dimension; cotton as a template, the cotton itself, the growth of the crystal structure provides an effective center of the crystal in the center to form an effective, generating a specific topography of the carbonate La. |
4樓2010-06-02 00:55:08
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