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Novel and economic method of carbon nanotubes synthesis on a nickel magnesium oxide catalyst using microwave radiation
Journal of Molecular Liquids ( IF 6 ) Pub Date : 2018-01-10 , DOI: 10.1016/j.molliq.2018.01.062
Elena A. Burakova , Tatyana P. Dyachkova , Artem V. Rukhov , Evgeny N. Tugolukov , Evgeny V. Galunin , Alexey G. Tkachev , Al Arsh Basheer , Imran Ali

Carbon nanotubes (CNTs) are gaining increased importance in many fields of science and technology due to their unique properties of greater surface area, mechanical strength, electrical and thermal conductivity. A novel method of carbon nanotubes synthesis on a nickel magnesium oxide catalyst using microwave radiation was developed and presented. In the present paper, the possibility of modifying a Ni-MgO catalyst, for carbon nanotube synthesis with microwave radiation (0.8 kW and 2.45 GHz) at the production stage, is studied. The effect of this radiation on the catalyst characteristics (specific surface area, catalytic activity, etc.) is experimentally considered. It is shown that the use of short term exposure to the microwave radiation in preparing the catalyst made it possible to increase its specific surface area from 5.2 to 9.1 m2/g. The implementation of chemical vapor deposition of the catalyst, modified with the microwave radiation for 30 s, contributed to an increase in the yield of a nanostructured material by 40–45%; making carbon nanotubes inexpensive in production. The synthesized carbon nanostructured material predominantly represented multilayered nanotubes with a diameter of 10–40 nm. The developed method was capable to produce 40–45% yield with almost two time's greater surface area. The synthesized carbon nanotubes may be used for various purposes including water treatment due to the economy in production and large surface area.



中文翻译:

微波辐射在镍镁氧化物催化剂上合成碳纳米管的新颖经济的方法

碳纳米管(CNT)由于具有更大的表面积,机械强度,电导率和导热率的独特特性,在许多科学和技术领域中正变得越来越重要。提出并提出了一种利用微波辐射法在镍镁氧化物催化剂上合成碳纳米管的新方法。在本文中,研究了在生产阶段用微波辐射(0.8 kW和2.45 GHz)合成Ni-MgO催化剂用于碳纳米管合成的可能性。实验上考虑了这种辐射对催化剂特性(比表面积,催化活性等)的影响。结果表明,在制备催化剂中使用短期暴露于微波辐射可以使其比表面积从5.2 m增加到9.1 m2 /克。实施催化剂的化学气相沉积,并用微波辐射处理30 s,使纳米结构材料的产率提高了40-45%。使碳纳米管的生产成本低廉。合成的碳纳米结构材料主要代表直径为10–40 nm的多层纳米管。所开发的方法能够以近两倍大的表面积产生40-45%的产率。由于生产的经济性和大的表面积,合成的碳纳米管可用于包括水处理在内的各种目的。

更新日期:2018-01-10
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