Porous carbons derived from Arecanut seeds by direct pyrolysis for efficient CO2 capture

Title

Porous carbons derived from Arecanut seeds by direct pyrolysis for efficient CO2 capture

Creator

Supriya S.; Singh G.; Bahadur R.; Vinu A.; Hegde G.

Description

In this report, we demonstrate the preparation of a series of carbon nanospheres (CNSs) with high surface area and tunable sizes from natural bioresource, Arecanut kernels, by using direct pyrolysis. This method offers a convenient approach to induce porosity in the synthesized carbons without the need for an activating agent. The textural parameters including the specific surface area, pore volume, and pore size can be controlled by the simple adjustment of the carbonization temperature from 700 to 1000C. The CNSs prepared at 700C showed a low specific surface area, whereas the higher carbonization temperatures (8001000C) supported the rise in specific surface area of the products (433.61001.4 m2/g). The carbon, hydrogen, and nitrogen (CHN) analysis revealed that the CNSs exhibited a high purity with the carbon percentage ranging between 96 and 99%. The synthesized materials were tested as adsorbents for CO2 gas, and it was found that the CNSs with the highest specific surface area of 1001.4 m2/g registered the CO2 adsorption capacity of 14.1 mmol/g at 0C and 30 bar, which is a reasonably high value among reported porous carbons prepared without activation. This value of CO2 adsorption also stands above the activated carbon and multiwalled carbon nanotubes. The excellent CO2 adsorption capability of these adsorbents along with their low-cost synthesis offers a feasible pathway for designing such materials for other applications as well. 2021, Qatar University and Springer Nature Switzerland AG.

Source

Emergent Materials, Vol-5, No. 6, pp. 1757-1765.

Date

2022-01-01

Publisher

Institute for Ionics

Subject

Arecanut kernel; Bioresource; Carbon nanospheres; CO₂ capture

Coverage

Supriya S., Centre for Nano-Materials & Displays, B.M.S College of Engineering, Bull Temple Road, Basavanagudi, Bengaluru, 560019, India; Singh G., Global Innovative Center for Advanced Nanomaterials, College of Engineering, Science, and Environment (CESE), University of Newcastle, Callaghan, Newcastle, 2308, NSW, Australia; Bahadur R., Global Innovative Center for Advanced Nanomaterials, College of Engineering, Science, and Environment (CESE), University of Newcastle, Callaghan, Newcastle, 2308, NSW, Australia; Vinu A., Global Innovative Center for Advanced Nanomaterials, College of Engineering, Science, and Environment (CESE), University of Newcastle, Callaghan, Newcastle, 2308, NSW, Australia; Hegde G., CHRIST (Deemed to be) University, Hosur Road, Bangalore, 560029, India

Rights

Restricted Access

Relation

ISSN: 25225731

Format

Online

Language

English

Type

Article

Identifier

https://doi.org/10.1007/s42247-021-00321-3

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85118581659&doi=10.1007%2fs42247-021-00321-3&partnerID=40&md5=3d3d023a7a8a65971ab394b3a44944c5