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Adsorption and dissociation of O-2 on Ni-doped (5,5) SWCNT: A DFT study

机译:D-2研究Ni掺杂(5,5)SWCNT上O-2的吸附和解离

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The effect of nickel doping on the adsorption and dissociation of the O-2 molecule on a (5, 5) single-walled carbon nanotube (SWCNT) is investigated using first-principles density functional theory calculations in company with the nudged elastic band (NEB). Our calculated results show that nickel doping can make it much easier for oxygen adsorbed on the SWCNT, and the chemisorption energy is high enough to alter the O-O bond. What's more, the activation barrier for oxygen dissociation is lowered to 0.399 eV through nickel doping, which is much lower than Pt doped CNT. Our work have done here would be of help to develop platinum-free oxygen reduction reaction catalysts based on SWCNTs. (C) 2016 Elsevier B.V. All rights reserved.
机译:结合第一原理密度泛函理论计算并结合带动弹性带(NEB),研究了镍掺杂对(5,5)单壁碳纳米管(SWCNT)上O-2分子吸附和解离的影响)。我们的计算结果表明,镍掺杂可使氧更容易吸附在SWCNT上,并且化学吸附能足够高,可以改变O-O键。此外,通过镍掺杂,氧离解的激活势垒降低至0.399 eV,远低于掺杂Pt的CNT。我们在这里所做的工作将有助于开发基于SWCNT的无铂氧还原反应催化剂。 (C)2016 Elsevier B.V.保留所有权利。

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