Vanderbilt University researchers present a new method of extracting cheap carbon nanotubes from the CO₂ in the air,writes Maverick Baker
188betsport

Carbon nanotubes,one of the strongest and lightest materials known to man,被认为是世界上最伟大的超材料之一。But despite constantly bombarding the news with newly discovered applications or breaking new world records,碳纳米管仍然没有占领世界。

It has been nearly three decades since Thomas C Maganas and Alan L Harrington discovered carbon nanotubes in1991.Yet 27 years later and carbon nanotubes have barely made any impact on an industrial level.原因很简单,碳纳米管的制造成本高得离谱。

However,博士生安娜·道格拉斯和他们的团队已经为这个昂贵的问题提出了一个新的解决方案。

把空气变成廉价的碳纳米管


最近论文发表in ACS publications,范德比尔特大学的科学家团队概述了一种从空气中的二氧化碳分子中提取廉价碳纳米管的新方法。

据报纸报道,能源消耗的成本远低于碳纳米管的制造价值。虽然没有提到具体的价格,这项研究最终将使大规模生产碳纳米管成为一种非常接近的可能性。

“市场上最便宜的碳纳米管每千克成本约为100-200美元,“Douglas said.“我们的研究进展表明,与这些材料相比,利用从空气中捕获的二氧化碳,以更低的成本合成碳纳米管具有更好的质量。”“

With this new method,将二氧化碳转化为碳纳米管的过程可能在经济上是可行的。很快,companies will be able to convert carbon dioxide gas into various carbon nanotube products and sell them at a profit – perhaps the most environmentally sound business model to date.

“我们学到的是打开大门的科学,现在可以建造一些世界上最有价值的材料,比如钻石和单壁碳纳米管,from carbon dioxide that we capture from air through our process,“Pint said.

流程如何工作


碳纳米管形成的确切机制尚不完全清楚。However,the new process involves a rather uncommon method of nanotube production –电化学188betsport.

The method produces cheap nanotubes with remarkably small diameters,通常需要难以置信的精密度和精密机械的过程。虽然,新工艺需要相当原始的设备。

不是用复杂的机器来组装小部分的碳纳米管,这项新研究探索了一种更简单的方法。这种方法是在一张铝板上覆盖一层铁薄膜。当置于盐溶液中并由电流感应时,铁作为催化剂,开始在钢板表面形成碳纳米管结构。

Image: Vanderbilt University

在这张照片中,电流通过一块镀铁的钢板,使碳纳米管开始在板的表面形成。

“我们所做的最令人兴奋的事情之一就是利用电化学把二氧化碳分解成碳和氧的元素成分,然后缝合在一起,188betsport纳米级精度,those carbon atoms into new forms of matter,“助理教授卡里·品特说。“这就为利用碳纳米管生产出真正有价值的产品打开了大门。这可能会彻底改变世界。”“

尽管这项研究是开创性的,研究人员继续努力制造只有几厘米长的碳纳米管链。

To date,the largest carbon nanotube ever produced measures a little less than half a metre long – far off from the 100,000km tether required to build a space elevator.

The news is exciting and will certainly expedite the implementation of carbon nanotubes in everyday life.However,it will be many years and likely much longer until everything is understood about manufacturing cheap carbon nanotubes.

This article was written byMaverick Bakerand is reproduced with kind permission fromInterestingEngineering.com网站.Find the link to the original article在这里.

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Carbon nanotubes,one of the strongest and lightest materials known to man,被认为是世界上最伟大的超材料之一。But despite constantly bombarding the news with newly discovered applications or breaking new world records,carbon nanotubes are still not taking over the world.It has been nearly three...