journal article·2021-11-23

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

Yuting Shen, Shi Su, Wen Zhao, Shaobo Cheng, Tao Xu, Kuibo Yin, Linjiang Chen, Longbing He, Yilong Zhou, Hengchang Bi, Shu Wan, Qiubo Zhang, Liang Wang, Zhenhua Ni, Florian Banhart, Gianluigi A. Botton, Feng Ding, Rodney S. Ruoff, Litao Sun

ACS Nano· Volume 15· Issue 11
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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.
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Research context

OpenAlex topics: Diamond and Carbon-based Materials Research · Lubricants and Their Additives · Advanced materials and composites

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

SEU−FEI Nano−Pico Center, Key Lab of MEMS of Ministry of Education, Collaborative Innovation Center for Micro/Nano Fabrication, Device and System, Southeast University, Nanjing 210096, People’s Republic of China

School of Aeronautic Engineering, Nanjing Vocational University of Industry Technology, Nanjing 210023, People’s Republic of China

Center for Multidimensional Carbon Materials (CMCM), Institute for Basic Science (IBS), Ulsan 689-798, Republic of Korea

Department of Materials Science and Engineering and Canadian Centre for Electron Microscopy, McMaster University, Hamilton, ON, Canada L8S 4M1

Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, United Kingdom

Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, People’s Republic of China

Department of Physics, Southeast University, 211189, Nanjing, China

Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 Université de Strasbourg - CNRS, 23 rue du Loess, 67034 Strasbourg, France

School of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Republic of Korea

Funding

Natural Science Foundation of Jiangsu Province · Institute for Basic Science · National Natural Science Foundation of China

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