Tea grounds inspiration for a renewable biomass-based carbon aerogel with CMC and PVA reinforcements: Dye adsorption and supercapacitor prospects

Author:

Buu Ton That1,Tu Phan Minh1,Cong Che Quang1,Hai Nguyen Duy1,Minh Dang Thanh Cong1,Nam Nguyen Thanh Hoai1,Quan Vo Minh2,Ngoc Bo Khanh2,Han Le Gia1,Ha Huynh Ky Phuong1,Son Nguyen Truong1,Hieu Nguyen Huu1

Affiliation:

1. VNU-HCM, Ho Chi Minh City University of Technology (HCMUT)

2. University of Science (HCMUS)

Abstract

Abstract In this study, tea grounds-carbon aerogel (TG-CA) was successfully synthesized and applied effectively in organic dye adsorption and supercapacitor applications. Interestingly, the prepared material has unique properties due to the synthesis process with the combination of carboxymethyl cellulose and poly(vinyl alcohol), which can improve the mechanical properties, strengthen the three-dimensional structure, and increase the specific surface area. Besides, the fabricated carbon aerogel also demonstrated excellent adsorption capacity for rhodamine B (RhB), crystal violet (CV), and methyl orange (MO) of 158.4, 143.2, and 132.9 mg/g for 2 h, respectively. Wherein, the adsorption efficiency of RhB dye was evaluated according to the pseudo-second-order kinetic (PSO) and the Langmuir isotherm model with R2 = 0.9947. Besides, the thermodynamic investigation of RhB adsorption using TG-CA800 reveals that the process is endothermic and the negative values of Gibb's free energy (ΔG°) demonstrate that the process was spontaneous. Regarding the electrochemical properties, the tea grounds-carbon prepared at 800oC (TG-CA800) indicated the highest specific capacitance of 291 F/g at the current density of 10 A/g with the potential window of −1.0 to 0 V in phosphate buffer (pH 7). Additionally, the great stability of the material was also confirmed with high capacitance retention of 97.53% after 500 cycles. These results suggest that the carbon aerogel materials prepared from green precursor sources, particularly tea grounds, could be considered a potential and promising approach to tackle organic dye elimination and supercapacitor applications.

Publisher

Research Square Platform LLC

Reference36 articles.

1. A review on biomass and wind as renewable energy for sustainable environment;Amjith LR;Chemosphere,2022

2. Particleboard from agricultural biomass and recycled wood waste: A review;Hua LS;J Mater Res Technol,2022

3. Mussatto SI, Dragone GM (2016) Biomass pretreatment, biorefineries, and potential products for a bioeconomy development. in Biomass fractionation technologies for a lignocellulosic feedstock based biorefinery. Elsevier, pp 1–22

4. Advances in pretreatment of straw biomass for sugar production;Tan J;Front Chem,2021

5. Regulation of plant biomass production;Demura T;Curr Opin Plant Biol,2010

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3