Temperature Effect on the Synthesis of Multi-Walled Carbon Nanotubes by Spray Pyrolysis of Botanical Carbon Feedstocks: Turpentine, α-pinene and β-pinene

Biological effects of carbon nanotubes generated in forest wildfire ecosystems rich in resinous trees on native plants

“…Therefore, the above hypothesis is also supported by the detection of coil-shaped crystalline carbon nanoparticles in the HR-TEM images of the burned P. oocarpa and P. pseudostrobus wood. In addition, as mentioned above, the impossibility to find MWCNTs into the P. montezumae samples and the sole presence of amorphous carbon structures in this species, indicates that P. montezumae trees lacks either the concentration of catalystics or the type of metal required for an effective synthesis of these structures by a CVD like method ( Lara-Romero et al, 2011 ; Zhao et al, 2011 ).…”

“…Production of MWCNTs by CVD requires the presence of volatile carbon compounds, which may act as precursors, in the gaseous state. P. oocarpa is a species rich in turpentine, and its oleoresin is a mixture of highly volatile monoterpenes, including α - and β -pinenes, which have been identified as highly effective MWCNT precursors capable of providing a high yield ( Lara-Romero et al, 2011 ). According to previous studies, coil-shaped crystalline nanoparticles cannot be synthesized by processes other than CVD ( Fejes & Hernádi, 2010 ; Mhlanga et al, 2011 ).…”

“…Oleoresin extraction is commonly performed in the forestlands of Michoacán, México, where oleoresin is collected from the trunks of living pines, and turpentine is obtained from steam distillation. Alpha-pinene, which is used as a raw material for solvent production, is one of the most important components of turpentine documented as an effective compound from which high-quality and high-yield MWCNTs can be synthesized by CVD ( Lara-Romero et al, 2011 ). Pine species such as Pinus leiophylla , Pinus oocarpa , Pinus montezumae , Pinus pseudostrobus , and Pinus teocote are considered the most important tree species for oleoresin extraction in the Mexican industry.…”

Nanotubes

“…21 Pinene in turpentine can affect the crystalline nature of MWCNTs produced by spray pyrolysis using ferrocene. 22 The iron-containing proteins, hemoglobin, myoglobin and cytochrome c assembled on a surface can be used to initiate the growth of MWCNTs. 23 This journal is © The Royal Society of Chemistry 2012…”

Design of palladium-based heterogeneous catalysts for selective oxidation of alcohols

“…Liquid pyrolysis is one of them. Liquid hydrocarbons such as ethanol [283][284][285], toluene [286,287], hexane [288], various pinene components [289], neem oil [290], coconut oil [291] and waste pyrolysis oil [284] can be used as the carbon source while solid catalysts like cobalt and molybdenum acetates [292], ferrocene [287,288,293] are proved to be effective to catalyze the reaction. Solid state pyrolysis [294][295][296][297], flame pyrolysis and bottom-up organic methods [298][299][300] also enriched the family of nonstandard approaches to synthesize carbon nanotubes.…”