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Comparative study of CO2 activation on alkali metals encapsulated III–V hollow nanocages: An insight from first-principles calculations
Physics Letters A ( IF 2.3 ) Pub Date : 2021-07-21 , DOI: 10.1016/j.physleta.2021.127554
Rituparna Maiti 1 , Narendra Nath Ghosh 2 , Abdul Ashik Khan 3 , Nabajyoti Baildya 4 , Dilip K. Maiti 1
Affiliation  

Density functional theory calculations have been applied to explore a series of 12 selected nano-hollow cages A12X12 for catalysis of CO2 to hydrogenated products. The reactivity order among the nanocages is found to be A12N>12A12P>12A12As12. Among the 12 selected nano-hollow cages, only six nanocages are able to activate CO2 molecule. Surprisingly, endohedral doping of alkali metals (Li, Na, K) leads to a decrease in band gap, increases charge separation and hereby increases the adsorption energies. Additionally, while the undoped A12As12 nanocages remain inert for CO2 activation alkali metal doped A12As12 nanocages showed an increased level of CO2 activation. Furthermore, among the alkali metals, potassium doped endohedral nanocages showed increased adsorption energy and the least energy barrier for CO2 activation. These findings have immense importance to provide new ideas for the design of potential nanocages catalyst for CO2 reduction.



中文翻译:

碱金属封装的 III-V 族中空纳米笼上CO 2活化的比较研究:第一性原理计算的见解

密度泛函理论计算已被应用于探索一系列 12 个选定的纳米空心笼 A 12 X 12用于将 CO 2催化为氢化产物。发现纳米笼之间的反应性顺序是 A 12 N>12一种12>12一种1212.在选定的 12 个纳米空心笼中,只有 6 个纳米笼能够激活 CO 2分子。令人惊讶的是,碱金属(Li、Na、K)的内嵌掺杂导致带隙减小,增加电荷分离,从而增加吸附能。此外,虽然未掺杂的A 12 As 12纳米笼对于CO 2活化保持惰性,但碱金属掺杂的A 12 As 12纳米笼显示出增加的CO 2活化水平。此外,在碱金属中,钾掺杂的内嵌纳米笼表现出增加的吸附能和对 CO 2的最低能垒激活。这些发现对于为潜在的 CO 2还原纳米笼催化剂的设计提供新思路具有重要意义。

更新日期:2021-07-24
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