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Title: A metallic peanut-shaped carbon nanotube and its potential for CO2 capture

Journal Article · · Carbon
 [1];  [1];  [2];  [3]
  1. Peking University, Beijing (China)
  2. Tohoku University, Sendai (Japan); Sri Ramaswamy University, Kattankulathur (India)
  3. Virginia Commonwealth University, Richmond, VA (United States)

One of the greatest challenges in greenhouse gas reduction is to develop low-cost materials capable of efficient CO2 capture. Carbon, due to its flexible bonding characteristics, numerous allotropic forms, and lightweight, is an attractive material for such investigation. Inspired by the experimental synthesis of C50Cl10 in milligram quantities and recent works on peanut-shaped carbon nanotubes (PSNT), using state-of-the-art first-principles theory and molecular dynamics simulation, here we have discovered a new form of C50 fullerene-based PSNT, α-PSNT. which is not only dynamically and thermally stable, but also energetically more stable than previously identified PSNTs composed of C50 cages, and can withstand temperatures to 1000 K. Due to its unique atomic configuration, α-PSNT exhibits interesting physical properties including a high heat capacity, ultra-soft mechanical property with Young's modulus being a quarter of single-walled carbon nanotube (SWNT), and chirality independent metallicity. A systematical study of the adsorption properties reveals that both pristine and N-doped α-PSNTs have better CO2 adsorption properties than SWNTs. The underline mechanism is that the intrinsic metallicity improves its ability to capture CO2 as well as other gases because of the high density of electronic states at the Fermi level.

Research Organization:
Virginia Commonwealth Univ., Richmond, VA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); National Key Research and Development Program of China; National Natural Science Foundation of China (NSFC); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
FG02-96ER45579; 2016YFE0127300, 2017YFA0205003; NSFC-11174014; NSFC-21773004
OSTI ID:
1538058
Alternate ID(s):
OSTI ID: 1548679
Journal Information:
Carbon, Vol. 132, Issue C; ISSN 0008-6223
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

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