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首页> 外文期刊>Journal of Materials Engineering and Performance >Green Process for Preparation of Nickel Hydroxide Films and Membranes
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Green Process for Preparation of Nickel Hydroxide Films and Membranes

机译：氢氧化镍膜和膜制备的绿色工艺

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摘要

Nickel hydroxides have numerous applications including as battery electrodes, electrochromic devices, electrochemical sensors, and supercapacitors and in such processes as photocatalysis, electrocatalysis, and electrosynthesis. A simple solution growth process for production of beta-Ni(OH)(2)has been developed. The process involves dissolution of nickel hydroxide powders in concentrated ammonia to form [Ni(NH3)(6)](OH)(2). If ammonia is allowed to evaporate from the resulting solution, the dissolution process is reversed and crystalline films of beta-Ni(OH)(2)are deposited that consist of closely packed micron-sized clumps of thin plates. Addition of sodium aluminate to the solution makes it possible to also prepare alpha nickel hydroxide as free standing membranes at air-water interface. The overall procedure can be described as a green process since it eliminates the environmental burden of by-product production because Ni(OH)(2)is simply dissolved and transformed into the desired material without producing waste salts such as ammonium nitrate or ammonium chloride that would be produced by a conventional precipitation approach for Ni(OH)(2)membrane or film preparation.
机译：氢氧化镍具有许多应用，包括作为电池电极，电致变色器件，电化学传感器和超级电容器，以及作为光催化，电常见和电合成的过程。已经开发出一种简单的溶液生长方法，用于生产Beta-Ni（OH）（2）。该方法涉及在浓氨中溶解氢氧化镍粉末以形成[Ni（NH 3）（6）]（OH）（2）。如果允许从所得溶液中蒸发氨，则沉积溶解过程，沉积β-Ni（2）的结晶薄膜，其由紧密堆积的微米块的薄板组成。向溶液中添加铝酸钠使得可以在空气 - 水界面处作为自由静态膜制备α镍镍镍镍镍镍镍。总程序可以描述为绿色过程，因为它消除了副产物生产的环境负担，因为Ni（OH）（2）被简单地溶解并转化成所需的材料，而不产生硝酸铵或氯化铵或氯化铵的废盐将通过常规沉淀方法来生产Ni（OH）（2）膜或薄膜制剂。

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