Results 151 to 160 of about 52,862 (219)

Ozone-modified detonation nanodiamonds

Diamond and Related Materials, 2008
XPS, EPR and NMR studies of the ozone-treated nanodiamond (NDO) are presented. Based on the spectra, the nature of the surface chemical functional groups, which were formed as a result of the ozone reaction with the pristine DND surface in the soot, is discussed.
G. Cunningham, A.M. Panich, A.I. Shames, I. Petrov, O. Shenderova   +4 more
openaire   +1 more source

Deagglomeration of Detonation Nanodiamonds

Nanoscience and Nanotechnology Letters, 2011
Ioffe Physical Technical Institute, 26 Polytechnicheskaya st. 194021, St. Petersburg, RussiaIt is well known that a commercial powder of detonation nanodiamonds (DND) and their aqueoussuspensions consist of agglomerates of 4 5 nm crystalline diamond grains.
A. E. Aleksenskiy, E. D. Eydelman, A. Ya. Vul'   +2 more
openaire   +1 more source

Structure of detonation nanodiamonds

Mendeleev Communications, 2001
Nanoparticles of diamond were formed from detonations, and density and other measurements indicate they are hollow. The most likely explanation is that they condensed from liquid carbon which is less dense than diamond.
Alexander L. Vereshchagin, Gennady V. Sakovich   +1 more
openaire   +1 more source

Thermal Analysis of Detonation Nanodiamonds

Nanotechnologies in Russia, 2018
The thermal treatment of detonation nanodiamonds samples has been performed using synchronous thermal analysis in an argon flow at atmospheric pressure and 600, 800, 1000, 1200, and 1500°C with heating rates of 2 and 10°C/min. X-ray phase analysis of the stored samples shows the thermal stability of some nanodiamond particles up to 1500°C.
V. P. Efremov, E. I. Zakatilova, I. V. Maklashova, N. V. Shevchenko   +3 more
openaire   +1 more source

Structural study of detonation nanodiamonds

Diamond and Related Materials, 2005
Abstract The structure of spherical hollow detonation nanodiamonds (DND) previously ground in a planetary mill for 10 min has been studied by synchrotron radiation diffraction. The interference contribution of the diffraction pattern from DND calculated using different structural parameters has been compared with the experimental pattern of DND after
G.S. Yurjev, A.L. Vereshagin, M.A. Korchagin   +2 more
openaire   +1 more source

Why detonation nanodiamonds are small

Journal of Superhard Materials, 2013
Based on X-ray diffraction patterns and an original atom distribution calculation by the proposed computer models, we infer that there exist high-quality and poor-quality detonation nanodiamonds. It has been demonstrated that the high-quality detonation nanodiamonds are small in size and have a structure corresponding to that of macrodiamond, while ...
V. Yu. Dolmatov, G. S. Yur’ev, V. Myllymäki, K. M. Korolev   +3 more
openaire   +1 more source

Detonation Nanodiamonds as Catalyst Supports

Fullerenes, Nanotubes and Carbon Nanostructures, 2010
The article reports on experimental study of catalytic properties of a new system: Pt on detonation nanodiamond (Pt/DND) for the carbon monoxide oxidation reaction. The catalytic activity of Pt/DND structures as a function of platinum content in the catalyst within the 7–80 wt % intervals was studied and the structure of the Pt/DND catalyst was ...
N. N. Vershinin, O. N. Efimov, V. A. Bakaev, A. E. Aleksenskii, M. V. Baidakova, A. A. Sitnikova, A. Ya. Vul’   +6 more
openaire   +1 more source

Dynamic self-assembly of detonation nanodiamond in water.

Nanoscale, 2020
Nanodiamonds are increasingly used in many areas of science and technology, yet, their colloidal properties remain poorly understood. Here we use direct imaging as well as light and X-ray scattering reveal that purified detonation nanodiamond (DND ...
S. Chang, P. Reineck, Dewight R Williams, G. Bryant, G. Opletal, S. A. El-Demrdash, Po-Lin Chiu, E. Ōsawa, A. S. Barnard, C. Dwyer   +9 more
semanticscholar   +1 more source

Thermal oxidation of detonation nanodiamond

Moscow University Physics Bulletin, 2009
In this work the results of investigation of detonation ultradispersed diamond (UDD) powder by means of thermogravimetric analysis (TGA) and Raman scattering (RS) are presented. Using the TGA method the temperature regions corresponding to the oxidation of different carbon fractions included in the composition of UDD powder were determined.
I. A. Apolonskaya, A. V. Tyurnina, P. G. Kopylov, A. N. Obraztsov   +3 more
openaire   +1 more source

Effect of detonation nanodiamonds on phagocyte activity

Cell Biology International, 2011
AbstractDetonation ND (nanodiamond) holds much promise for biological studies and medical applications. Properties like size of particles, inclination for modification of their surface and unambiguous biocompatibility are crucial. Of prime importance is interaction between ND and immune cells, which supervise foreign intrusion into an organism and ...
Alexey V, Karpukhin, Nadezhda V, Avkhacheva, Ruslan Yu, Yakovlev, Inna I, Kulakova, Valeriy A, Yashin, Georgiy V, Lisichkin, Valentina G, Safronova   +6 more
openaire   +2 more sources