Oxygen functionalized porous activated biocarbons with high surface area derived from grape marc for enhanced capture of CO2 at elevated-pressure

Ismail, Intan S.; Singh, Gurwinder; Vinu, Ajayan; Smith, Paul; Kim, Sungho; Yang, Jae-Hun; Joseph, Stalin; Yusup, Suzana; Singh, Mandeep; Bansal, Vipul; Talapaneni, Siddulu N.

Title: Oxygen functionalized porous activated biocarbons with high surface area derived from grape marc for enhanced capture of CO2 at elevated-pressure
Creator: Ismail, Intan S.; Singh, Gurwinder; Vinu, Ajayan; Smith, Paul; Kim, Sungho; Yang, Jae-Hun; Joseph, Stalin; Yusup, Suzana; Singh, Mandeep; Bansal, Vipul; Talapaneni, Siddulu N.
Relation: Carbon Vol. 160, Issue 30 April 2020, p. 113-124
Publisher Link: http://dx.doi.org/10.1016/j.carbon.2020.01.008
Publisher: Elsevier
Resource Type: journal article
Date: 2020
Description: This research demonstrates the conversion of grape marc into highly carbonaceous and oxygen functionalized porous activated biocarbons (PABs) with a high specific area for CO₂ capture. The materials are synthesized using KOH activation at 800 °C and show a high content of micropores and high specific surface areas which can be easily manipulated by varying the amount of KOH. The optimized material PAB3 obtained using KOH/grape marc biochar ratio of 3 displays the highest specific surface area (2473 m² g⁻¹), high micropore volume (0.72 cm³ g⁻¹) and a pore diameter of 0.74 nm. Owing to its highly developed porosity and excellent textural parameters, PAB3 exhibits a high CO₂ adsorption of 6.2 mmol g⁻¹ at 0 °C/1 bar and 26.8 mmol g⁻¹ at 0 °C/30 bar. It is often considered challenging to synthesize a CO₂ adsorbent with all-round performance for CO₂ capture under diverse conditions of temperature and pressure. The optimized material PAB3 is also found to be thermally stable which when coupled with its superior CO₂ capture performance presents a promising candidature in the field of carbon capture. Furthermore, the excellent features of the synthesized material suggest that these materials could be extended to several other adsorption related fields.
Subject: grape marc biomass; porous activated biocarbons; high surface area; CO2 capture; SDG 13; Sustainable Development Goals
Identifier: http://hdl.handle.net/1959.13/1437684
Identifier: uon:40428
Identifier: ISSN:0008-6223
Language: eng
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