Issue 26, 2021
From the journal:

RSC Advances

Green synthesis of nitrogen-doped multiporous carbons for oxygen reduction reaction using water-caltrop shells and eggshell waste

Chun-Han Hsu, ORCID logo †a   Zheng-Bang Pan,†b   Hau-Ting Qu,b   Chuan-Ren Chen,b   Hong-Ping Lin, ORCID logo *b   I-Wen Sun,*b   Ching-Ying Huangc  and  Chun-Han Lic  

* Corresponding authors

a General Education Center, National Tainan Junior College of Nursing, Tainan 700, Taiwan

b Department of Chemistry, National Cheng Kung University, Tainan 70101, Taiwan
E-mail: hplin@mail.ncku.edu.tw, iwsun@mail.ncku.edu.tw
Fax: +886-6-276 2331
Tel: +886-6-275 7575#65342

c Green Energy and Environment Research Laboratories, Industrial Technology Research Institute, Tainan 71150, Taiwan

Abstract

A green synthesis method is proposed for the preparation of nitrogen-doped multiporous carbons (denoted as N-MPCs) from water-caltrop shell (WCS) using eggshell waste as both a nitrogen-dopant and an activating agent. It is shown that the surface area, porosity, yield and nitrogen content of the as-prepared N-MPCs can be easily controlled by adjusting the activation temperature. Moreover, in oxygen reduction reaction (ORR) tests performed in O2-saturated 0.1 M KOH(aq) electrolyte containing 1.0 M methanol, the N-MPC catalysts show a high ORR stability and good resistance to methanol corrosion. In addition, as a cathode material in Al–air battery tests, the N-MPCs achieve a power density of 16 mW g−1 in a saturated NaCl(aq) electrolyte. Overall, the results show that the N-MPCs have a promising potential as a green and sustainable material for ORR catalysis applications.

Graphical abstract: Green synthesis of nitrogen-doped multiporous carbons for oxygen reduction reaction using water-caltrop shells and eggshell waste

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Article information

DOI
https://doi.org/10.1039/D1RA02100A
Article type
Paper
Submitted
16 Mar 2021
Accepted
22 Apr 2021
First published
28 Apr 2021
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2021,11, 15738-15747

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Green synthesis of nitrogen-doped multiporous carbons for oxygen reduction reaction using water-caltrop shells and eggshell waste

C. Hsu, Z. Pan, H. Qu, C. Chen, H. Lin, I. Sun, C. Huang and C. Li, RSC Adv., 2021, 11, 15738 DOI: 10.1039/D1RA02100A

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