Issue 38, 2018
From the journal:

RSC Advances

Insight into the significant roles of microstructures and functional groups on carbonaceous surfaces for acetone adsorption†

Xinning Yu,a   Shaojun Liu,ab   Guoxin Lin,a   Xuecheng Zhu,a   Shuo Zhang,a   Ruiyang Qu,a   Chenghang Zhenga  and  Xiang Gao ORCID logo *a  

* Corresponding authors

a State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
E-mail: xgao1@zju.edu.cn

b Key Laboratory of Low-grade Energy Utilization Technologies and Systems (Chongqing University), Ministry of Education of China, Chongqing University, Chongqing 400044, China

Abstract

To understand the roles of pore structures and functional groups on acetone adsorption, activated carbons (ACs) with different properties were obtained by surface modification. XRD, SEM, TEM and nitrogen adsorption were used to identify the structural characteristics of the ACs, while TG-DTA, FTIR, XPS and Boehm titration were applied to analyse the surface chemistries. The microporous surface areas showed a positive linear correlation to the acetone adsorption amounts, and increasing the carboxylic groups could improve the uptake of strongly adsorbed acetone. HNO3 modified AC (AC-N) was found to exhibit an excellent adsorption capacity of 5.49 mmol g−1, which might be attributed to the developed microporous structures and abundant carboxylic groups. The desorption activation energies (Ed) of strongly adsorbed acetone on AC-N and AC were both determined to be 81.6 kJ mol−1, indicating the same adsorption sites on different activated carbons, suspected to be carboxylic groups. The possible adsorption mechanism of acetone on carbonaceous surfaces was also proposed.

Graphical abstract: Insight into the significant roles of microstructures and functional groups on carbonaceous surfaces for acetone adsorption

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Article information

DOI
https://doi.org/10.1039/C8RA03099E
Article type
Paper
Submitted
11 Apr 2018
Accepted
31 May 2018
First published
13 Jun 2018
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2018,8, 21541-21550

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Insight into the significant roles of microstructures and functional groups on carbonaceous surfaces for acetone adsorption

X. Yu, S. Liu, G. Lin, X. Zhu, S. Zhang, R. Qu, C. Zheng and X. Gao, RSC Adv., 2018, 8, 21541 DOI: 10.1039/C8RA03099E

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