Synthesis of Body-Centered Cubic Carbon Nanocrystals

Abstract

A kind of carbon nanocrystals with body-centered cubic (bcc) structure has been synthesized by using a pulsed-laser induced liquid–solid interface reaction (PLIIR). Scanning electron microscopy, Raman spectra, transmission electron microscopy with energy dispersive X-ray spectrometry, selected area electronic diffraction, and high-resolution analysis are employed to characterize the morphology, composition, and structure of the synthesized nanocrystals. The experimental analyses show that the synthesized nanocrystals are single crystals with a bcc structure, the so-called C8, which was theoretically predicted by Johnston and Hoffmann. Carbon with a bcc structure has potential applications in mechanical engineering and electronics, because it is superdense and superhard. The synthesis mechanisms of bcc carbon nanocrystals by PLIIR are studied.

Super-SERS-active and highly effective antimicrobial Ag nanodendrites

“…The Ag NPs colloidal solution is prepared by laser ablation in liquid, which is described in detail in our previous work. [32][33][34][35] Fig. 10 shows the bactericidal coefficients of Ag NDs and NPs with contacting times with bacteria of 30 s, 5 min and 30 min, respectively, at a concentration of 8 mg L À1 at room temperature.…”

Trigraphene and its Derivates: A Novel Carbon Allotrope

“…4 The fascinating properties of these materials have arguably been the largest movement within the material sciences. 11 More recently, T-carbon, a new 3D carbon phase formed by replacing carbon atoms in cubic diamond by carbon tetrahedrons, 12 was successfully obtained. 5 In past several years, both experimental and theoretical investigations have been performed to predict and synthesize new all-carbon materials, and to reveal the interesting properties of these carbon allotropes.…”

Cubic C8: An Observable Allotrope of Carbon?

“…Hirsch'sr ule [1][2][3][4][5][6] states that molecules with 2(N + 1) 2 (where N is an onnegative integer) valencee lectrons can display spherical aromaticity.O ne candidate that fulfills this criterion is cubic C 8 (1,S cheme 1), which has 32 valence electrons (N = 3). CubicC 8 moieties have been suggested to comprise the fundamental carbon unit in ah igh-pressure body-centered-cubic (bcc) carbon nanocrystallinep hase [7][8][9][10] sometimes knowna s" super-dense carbon", first isolated by Strel'nitskii et al [11] and investigated in as eries of theoreticals tudies. [12][13][14] Cubic C 8 and its isomersh ave been the subjecto fs everalt heoretical studies.…”