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Front. Chem. | doi: 10.3389/fchem.2019.00808

Preparation of Lignocellulose-based Activated Carbon Paper as a Manganese Dioxide Carrier for Adsorption and In-situ Catalytic Degradation of Formaldehyde

 JunLi Ren1, 2*,  Xiao Zhang2, Chunhui Zhang3*, Qixuan Lin2, Banggui Cheng2, Xinxin Liu2 and  Feng Peng4
  • 1South China University of Technology, China
  • 2State Key Laboratory of Pulp and Paper Engineering, School of Light Industry Science and Engineering, South China University of Technology, China
  • 3School of Light Industry Science and Engineering, South China University of Technology, China
  • 4College of Materials Science and Technology, Beijing Forestry University, China

Formaldehyde is a colorless, highly toxic and flammable gas, which is harmful for human health. Recently, many efforts have been devoted to developing the activate carbon to absorb formaldehyde. In this work, lignocellulose-based activated carbon fiber paper (LACFP) loaded by manganese dioxide (MnO2) was fabricated for the adsorption and in-situ catalytic degradation of formaldehyde. LACFP was prepared by two-stage carbonization and activation of sisal hemp pulp-formed paper, followed by the impregnation of in the manganese sulfate (MnSO4) and potassium permanganate (KMnO4) solutions, and then MnO2 was formed by in situ growth based LACFP by calcination. The catalytic performance of MnO2-loaded LACFP was also discussed for formaldehyde. It was found that the suitable carbonization conditions were elevated, ranging from room temperature to 280 oC at 10 oC/min, from 280 oC to 400 oC at 2 oC/min, being kept temperature at 400 oC for 1 h, and then giving a noticeable rise in temperature from 400 to 700 oC at 15 oC/min. And the activation condition was similar with the carbonization in addition to holding at 700 oC for 2 h. Those conditions mentioned above were optimized to maintain the fiber structure and paper shape integrity, being conducive to loading of catalytic active substances. For the catalytic activity of MnO2-loaded LACFP, the concentration of formaldehyde decreased by 59±6 ppm and the concentration of CO2 increased by 75±3 ppm, when the reaction proceeded at room temperature for 10 h. The results indicated that MnO2-loaded LACFP could catalyze formaldehyde into non-toxic substance.

Keywords: Lignocellulose biomass, Carbon fiber paper, Manganese dioxide, Catalytic degradation, Formaldehyde

Received: 26 Sep 2019; Accepted: 08 Nov 2019.

Copyright: © 2019 Ren, Zhang, Zhang, Lin, Cheng, Liu and Peng. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence:
Prof. JunLi Ren, South China University of Technology, Guangzhou, China, renjunli@scut.edu.cn
Prof. Chunhui Zhang, School of Light Industry Science and Engineering, South China University of Technology, Guangzhou, 510641, Guangdong Province, China, chunhui@scut.edu.cn