Combustion Reactions of Poly(Carbon Monofluoride), (CF)_n, with Different Reductants and Characterization of the Products

Abstract

Mixtures of poly(carbon monofluoride) also known as graphite fluoride, (CF)n, with different reductants, such as NaN3, B, Ti, ZrTi, Si, CaSi2, AlSi, TiSi, MoSi2 and CrSi2 were investigated. Reactions between these substrates are fast and exothermic enough to proceed in a high temperature, self‐sustaining regime. Heat effects accompanying the reactions were measured and the solid reaction products were analyzed. SEM observation revealed the presence of exfoliated graphite in each case. Nanostructures, like nanofibers, nanorods, nanospheres and nanosized crystals, were also present in most of the products. Phase (XRD) and elemental composition as well as porous structure (N2 adsorption) of chosen reaction products were also determined.

Synthesis of SiC/Ag/Cellulose Nanocomposite and Its Antibacterial Activity by Reactive Oxygen Species Generation

“…SiC was prepared by combustion [6]. The combustion mixture was prepared by dry mixing calcium disilicide (CaSi 2 ) and poly (tetrafluoroethene) powders in a ceramic mortar.…”

“…SiC nanostructures are comprised mainly of SiC nanofibers and nanorods, which may be obtained using combustion synthesis [5,6]. In this method, after product purification, a material can be produced that consists almost exclusively of nanostructured SiC.…”

Interaction of Gram-Positive and Gram-Negative Bacteria with Ceramic Nanomaterials Obtained by Combustion Synthesis – Adsorption and Cytotoxicity Studies

“…Nanometric TiC was synthesized using a CF/ TiSi system, and a mixture of titanium carbide with gra phite (TiC/C) was obtained in using a TiSi/C 2 Cl 6 system (Szala, 2010). Graphite nanoparticles were synthesized during the combustion of a CF/Al mixture (Cudziło et al, 2007). The point of zero charge (PZC) of the investigated materials was analyzed according previously described potentiometric titration methods (van der Wal et al, 1997;Bourikas et al, 2003;Borkowski et al, 2015).…”

“…In this regard, nanostructured materials built from chemically inert and thermally stable carbides, such as silicon carbide (SiC) or titanium carbide (TiC), are particularly important. Recent studies show that nanostructures of silicon and titanium carbides can be obtained via self-propagating combustion synthesis (Huczko et al, 2005;Cudziło et al, 2007). In this process, not only carbide, but also carbon materials such as nanostructured graphite forms, can be produced.…”

Processing and Properties of Nanocarbon Reinforced Iron Nanocomposites by Self-Catalytic Propagation High- Temperature Synthesis for Cancer Therapy

“…To avoid such a disastrous side effect, the fast, hightemperature stage of the carbon layer must be followed by a rapid cooling down. Apart from the Huffman-Krätschmer arc process [18], SHS reactions are a promising way to produce such hetero-structures [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35]. Among the other possible synthesis processes, one could also cite RF plasma torch [36], magnetron and ion beam co-sputtering [37], high temperature annealing of the mixtures of carbon-based materials and metal containing powders [38], catalytic carbonization process [39,40,41], and laser induced pyrolysis [42].The very idea of encapsulating metals or metal carbides inside nanotubes or fullerene-like structures partly comes from the very specific magnetic properties in the nanoscale range, the carbon layer ensuring the particles to be stable, resistant, harmless, with many possible industrial applications [21] Experiment SHS process in PTFE /NaN 3 /Fe(CO) 5 systems…”