Porous Carbon Obtained by Carbonization of PET Mixed with Basic Magnesium Carbonate: Pore Structure and Pore Creation Mechanism

Przepiórski, Jacek; Karolczyk, Justyna; Takeda, Kazuhiro; Tsumura, Tomoki; Toyoda, Masahiro; Morawski, Antoni W.

doi:10.1021/ie801694t

Cited by 49 publications

(33 citation statements)

References 20 publications

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“…1. Presence of MgO was confirmed for BMC/PET and MgO/ PET systems in our earlier work [23]. Results of additional XRD measurements (not shown here), confirmed the same phase as the only solid product formed during heating of pure BMC and Mg(OH) 2 .…”

Section: Xrd Resultssupporting

confidence: 81%

“…This is evidently supported by TPD results presented in both Fig. 5 and our previous work [23] where only minor amounts of gasifying agents and carbon gasification products were detected during TPD from MgO/PET. In addition, opposite to BMC/ PET and Mg(OH) 2 /PET, the calculated carbon yields for MgO/PET system are comparable.…”

Section: Temperature Programmed Desorptionsupporting

confidence: 88%

“…It must be emphasized, that because of reactivity toward carbon at higher temperatures, both H 2 O and CO 2 are commonly used gases for activation of chars. As it was elucidated in our previous work [23], H 2 O and CO 2 occluded in a sample react with char formed from PET, and thus must cause some decrease in an amount of carbon in the product. The evolution of H 2 and CO from Mg(OH) 2 / PET-based material at above 600°C (Fig.…”

Section: Temperature Programmed Desorptionmentioning

confidence: 77%

“…390°C and completes at ca. 490°C, with a maximum rate at 440°C [23]. This rapid process is followed by a very slow and negligible mass loss at higher temperatures.…”

Section: Thermogravimetry and Carbon Yieldmentioning

confidence: 97%

“…Because of these extraordinary results, we undertook studies to understand and explain reasons of the high carbon yield and to point potential inaccuracies that can go with estimation of the yield using gravimetric method. In our previous work [23] we reported on pore creation mechanism in BMC/PET system. It was proved that pyrolysis of BMC/PET mixture, to some extent was accompanied by an occlusion of gaseous products of BMC decomposition (CO 2 and H 2 O) in the char formed from PET.…”

Section: Temperature Programmed Desorptionmentioning

confidence: 99%

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Effect of some thermally unstable magnesium compounds on the yield of char formed from poly(ethylene terephthalate)

Przepiórski

Karolczyk

Tsumura

et al. 2011

J Therm Anal Calorim

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Mixtures of poly(ethylene terephthalate) (PET) with magnesium compounds including carbonate, hydroxide, and oxide, with different weight ratios of the components, were subjected to thermogravimetric measurements up to 850°C in argon atmosphere. For reference, pure components of the examined mixtures were analyzed at the same conditions. During the heating, PET underwent carbonization and magnesium carbonate and hydroxide decomposed to MgO with evolution of gaseous products (CO 2 and/or H 2 O). As found, carbon yields calculated from the residual masses depended on the qualitative and quantitative composition of the starting mixture. Yields of carbon obtained from PET mixed with MgO did not depend on MgO/PET ratio. However, yields of carbon formed through pyrolysis of PET contained in the mixture with either magnesium carbonate or magnesium hydroxide were in general higher and depended on the weight ratio of components in the starting material. Reasons of these inconsistent results are discussed and explained. An influence of gasification of char on the carbon yield is explained.

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Section: Xrd Resultssupporting

confidence: 81%

Section: Temperature Programmed Desorptionsupporting

confidence: 88%

Section: Temperature Programmed Desorptionmentioning

confidence: 77%

“…390°C and completes at ca. 490°C, with a maximum rate at 440°C [23]. This rapid process is followed by a very slow and negligible mass loss at higher temperatures.…”

Section: Thermogravimetry and Carbon Yieldmentioning

confidence: 97%

Section: Temperature Programmed Desorptionmentioning

confidence: 99%

See 3 more Smart Citations

Effect of some thermally unstable magnesium compounds on the yield of char formed from poly(ethylene terephthalate)

Przepiórski

Karolczyk

Tsumura

et al. 2011

J Therm Anal Calorim

Self Cite

View full text Add to dashboard Cite

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Porous carbon nanosheet with high surface area derived from waste poly(ethylene terephthalate) for supercapacitor applications

Wen

Kierzek

Min

et al. 2019

J of Applied Polymer Sci

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Converting waste plastics into valuable carbon materials has obtained increasing attention. In addition, carbon materials have shown to be the ideal electrode materials for double-layer supercapacitors owing to their large specific surface area, high electrical conductivity, and stable physicochemical properties. Herein, an easily operated approach is established to efficiently convert waste poly(ethylene terephthalate) beverage bottles into porous carbon nanosheet (PCNS) through the combined processes of catalytic carbonization and KOH activation. PCNS features an ultrahigh specific surface area (2236 m 2 g −1 ), hierarchically porous architecture, and a large pore volume (3.0 cm 3 g −1 ). Such excellent physicochemical properties conjointly contribute to the outstanding supercapacitive performance: 169 F g −1 (6 M KOH) and 135 F g −1 (1 M Na 2 SO 4 ). Furthermore, PCNS shows a high capacitance of 121 F g −1 and a corresponding energy density of 30.6 Wh kg −1 at 0.2 A g −1 in the electrolyte of 1 M TEATFB/PC. When the current density increases to 10 A g −1 , the capacitance remains at 95 F g −1 , indicating the extraordinary rate capability. This work not only proposes a facile approach to synthesize PCNS for supercapacitors, but also puts forward a potential sustainable way to recycle waste plastics and further hopefully mitigates the waste plastics-related environmental issues.

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Controlling Porosity in Lignin‐Derived Nanoporous Carbon for Supercapacitor Applications

et al. 2014

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Low-cost renewable lignin has been used as a precursor to produce porous carbons. However, to date, it has not been easy to obtain high surface area porous carbon without activation processes or templating agents. Here, we demonstrate that low molecular weight lignin yields highly porous carbon with more graphitization through direct carbonization without additional activation processes or templating agents. We found that molecular weight and oxygen consumption during carbonization are critical factors to obtain high surface area, graphitized porous carbons. This highly porous carbon from low-cost renewable lignin sources is a good candidate for supercapacitor electrode materials.

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Porous Carbon Obtained by Carbonization of PET Mixed with Basic Magnesium Carbonate: Pore Structure and Pore Creation Mechanism

Cited by 49 publications

References 20 publications

Effect of some thermally unstable magnesium compounds on the yield of char formed from poly(ethylene terephthalate)

Effect of some thermally unstable magnesium compounds on the yield of char formed from poly(ethylene terephthalate)

Porous carbon nanosheet with high surface area derived from waste poly(ethylene terephthalate) for supercapacitor applications

Controlling Porosity in Lignin‐Derived Nanoporous Carbon for Supercapacitor Applications

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