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darrenf

金虫 (正式写手)

[交流] 【求助】对Advanced materials上的一个电沉积工艺不理解 已有3人参与

硫酸铜和乳酸,
用氢氧化钠调Ph值到9
这怎么实现的,铜离子水溶液,稍偏碱性一些就会发生沉淀了啊


Adv. Mater. 2009, 21, 3012–3015
Fabrication of Three-Dimensional Photonic Crystals
Using Multibeam Interference Lithography and
Electrodeposition

Electrodeposition: Electrodeposition of Cu2O[31] was performed using a
conventional three-electrode setup. A platinum plate and a Ag/AgCl in
saturated potassium chloride aqueous solution (SSE) were used as counter
and reference electrodes, respectively. The electrolyte was an aqueous
solution containing cupric sulfate (0.2 M) and lactic acid (1.6 M). The pH of
the solution was adjusted to 9 by addition of sodium hydroxide. The
solution temperature was kept constant at 65 8C during deposition. The
Cu2O layer was grown under potentiostatic conditions at _0.55 V versus
SSE. To facilitate infilling of the hydrophobic SU-8 template with the cupric
sulfate aqueous solution, the 3D template was first wetted by ethanol
before electrodeposition.
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darrenf

金虫 (正式写手)

引用回帖:
Originally posted by macyth at 2010-03-30 17:16:16:
国内外无氰镀铜研究都是在碱性环境下进行的

但是碱性环境产生沉淀,怎么回事
3楼2010-03-30 19:08:06
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macyth

银虫 (小有名气)


darrenf(金币+10): 2010-04-17 19:53
国内外无氰镀铜研究都是在碱性环境下进行的
2楼2010-03-30 17:16:16
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esparcher

铜虫 (小有名气)

注意温度是在65℃下!
可能是这个温度和ph之下,氢氧化铜的溶度积常数Ksp发生变化
vanishing liquid
6楼2010-04-17 06:48:31
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sdytzck82

银虫 (初入文坛)

darrenf(金币+10): 2010-04-17 19:52
有可能是形成了比Cu(OH)2更稳定的洛河物的原因吧
7楼2010-04-17 14:49:34
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