@Article{esee1124, 
author="Sivasankarapillai, Vishnu Sankar and Sundararajan, Atchaya and Eswaran, Muthusankar and Dhanusuraman, Ragupathy", 
title="Hierarchical Porous Activated Carbon Derived from Callistemon viminalis Leaf Biochar for Supercapacitor and Methylene Blue Removal Applications", 
journal="ES Energy and Environment", 
year="2024", 
volume="24", 
pages="1124", 
abstract="Activated carbon derived from biomass has gained excited research attention due to their low cost, ease of availability and eco-friendly nature. In this work, we present hierarchical porous activated carbon derived from the leaves of Callistemon viminalis (C. viminalis) commonly known as ‘Bottlebrush’ plant through a simple carbonization and KOH activation process. The material activated at 700 oC possess enhanced BET surface area (SBET) of 925 m2/g. The activated carbon has been employed as electrode material for supercapacitor which showed promising specific capacitance of 283 F/g at a current density of 1 A/g. Cyclic stability studies revealed a retention of capacitance of 97%. Further, adsorption studies were conducted using Methylene blue (MB) as dye and activated carbon as adsorbent. Adsorption efficiency was found to be 91.2% within one hour and the process was following Langmuir isotherm model. Kinetic studies revealed that the MB adsorption follows pseudo-second order kinetics. Thus, activated carbon derived from C. viminaliscan be employed as a promising candidate for supercapacitor as well as MB removal applications.", 
issn="2576-9898", 
doi="10.30919/esee1124", 
url="http://dx.doi.org/10.30919/esee1124" 
}