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Ruoff, Rodney S.
Center for Multidimensional Carbon Materials (CMCM)
Research Interests
  • Next generation carbons, ultrathin sp3-bonded carbon sheets, negative curvature (‘Schwartzites’) carbons, sp3/sp2 hybrid carbon materials, model compounds for novel carbon materials, reaction mechanisms

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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
Shen, YutingSu, ShiZhao, WenCheng, ShaoboXu, TaoYin, KuiboChen, LinjiangHe, LongbingZhou, YilongBi, HengchangWan, ShuZhang, QiuboWang, LiangNi, ZhenhuaBanhart, FlorianBotton, Gianluigi A.Ding, FengRuoff, Rodney S.Sun, Litao
Issue Date
2021-06
Publisher
American Chemical Society
Citation
ACS NANO, v.15, no.11, pp.17392 - 17400
Abstract
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://scholarworks.unist.ac.kr/handle/201301/55680
DOI
10.1021/acsnano.1c00209
ISSN
1936-0851
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CHM_Journal Papers
MSE_Journal Papers
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