Preparation of activated carbon fibers from polyvinyl chloride

Hybrid “Golden Fleece”: Synthesis and Catalytic Performance of Uniform Carbon Nanofibers and Silica Nanotubes Embedded with a High Population of Noble‐Metal Nanoparticles

“…[2] Of the important available functional materials, carbon nanofibers (including multiwalled carbon nanotubes) are well known as field electron sources, gas-selective adsorbents, catalyst supports, and electrode materials. [3,4] Most synthetic approaches for the fabrication of carbon nanofibers rely on very harsh conditions, for example, chemical vapor deposition (CVD), [5] plasma-enhanced CVD, [6,7] laser ablation, [8] decomposition of poly(vinyl chloride) (PVC), [9] and magnetic-field-induced pyrolysis of mesitylene at 700°C. [10] Additionally, loading carbon nanofibers with Pt or Pd metal nanoparticles requires pretreatment of the nanofibers for chemical activation or functionalization followed by the addition of a reducing agent.…”

Comparative study on composition, structure, and adsorption behavior of activated carbons derived from different synthetic waste polymers

“…The aromatic (rich in benzene) property of PET makes condensation much easier, thus leading to almost simultaneous occurrence of chain scission and condensation. As for PVC and TR, the condensation and aromatization mainly occur in the second and/or third weight loss step [15,17]. On the other hand, the multiple-step weight loss and relatively high yield of residues imply heterogeneous characteristic and high ash content of TR, which is in line with the elemental composition analysis (Table 1).…”

“…PVC is degraded into polyene chains, and SBR in TR is decomposed into styrene and butadiene [16,17]. Due to the exhaust ofvolatile components, the remained polymeric components are partly condensed into polyhexagonal carbon structures [17,18]. Herein, further increasing the temperature has less effect on the residual mass of PVC and TR after the first weight loss.…”

“…Herein, further increasing the temperature has less effect on the residual mass of PVC and TR after the first weight loss. The last step of weight loss for PVC (400-480°C) and TR (700-750°C) may be attributed to the thermal corruption of heavier non-volatile hydrocarbons and further aromatization [17]. In contrast, the pyrolysis of PET initiates at ca.…”

“…220°C, mainly due to the loss of volatile components (such as HCl and ethylene) and chain breakage of their polymer structure [15]. PVC is degraded into polyene chains, and SBR in TR is decomposed into styrene and butadiene [16,17]. Due to the exhaust ofvolatile components, the remained polymeric components are partly condensed into polyhexagonal carbon structures [17,18].…”