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Sub-4 nm Nanodiamonds from Graphene-Oxide and Nitrated Polycyclic Aromatic Hydrocarbons at 423 K

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Title
Sub-4 nm Nanodiamonds from Graphene-Oxide and Nitrated Polycyclic Aromatic Hydrocarbons at 423 K
Author(s)
Shen, Yuting; Su, Shi; Wen Zhao; Cheng, Shaobo; Xu, Tao; Yin, Kuibo; Chen, Linjiang; He, Longbing; Zhou, Yilong; Bi, Hengchang; Wan, Shu; Zhang, Qiubo; Wang, Liang; Ni, Zhenhua; Banhart, Florian; Botton, Gianluigi A.; Feng Ding; Rodney S. Ruoff; Sun, Litao
Publication Date
2021-11-23
Journal
ACS Nano, v.15, no.11, pp.17392 - 17400
Publisher
American Chemical Society
Abstract
© 2021 American Chemical Society.Nanodiamonds are interesting materials from the point of view of their biocompatibility and their chemical, spectroscopic, and mechanical properties. Current synthetic methods for nanodiamonds involve harsh environments, which are potentially hazardous in addition to being expensive. We report a low-temperature (423 K) hydrothermal approach to form nanodiamonds by using graphene-oxide or nitrated polycyclic aromatic hydrocarbons (naphthalene, anthracene, phenanthrene, or pyrene) as a starting material. The reaction products contain single-crystalline or twinned nanodiamonds with average diameters in the 2-3 nm range. Theoretical calculations prove that, at the nanoscale, sub-4 nm nanodiamonds may adopt a structure that is more stable than graphene-oxide and nitrated polycyclic aromatic hydrocarbons. Our findings show that sp2 carbon in the polycyclic aromatic precursor can be converted to sp3 carbon under unexpectedly moderate temperature conditions by using nanoscale precursors and thus offer a low-temperature approach for the synthesis of sub-4 nm nanodiamonds.
URI
https://pr.ibs.re.kr/handle/8788114/11112
DOI
10.1021/acsnano.1c00209
ISSN
1936-0851
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > 1. Journal Papers (저널논문)
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