Shrimp-shell derived carbon nanodots as carbon and nitrogen sources to fabricate three-dimensional N-doped porous carbon electrocatalysts for the oxygen reduction reaction

Physical Chemistry Chemical Physics : PCCP
Rongrong LiuGuozhong Wang

Abstract

Development of cheap, abundant and metal-free N-doped carbon materials as high efficiency oxygen reduction electrocatalysts is crucial for their practical applications in future fuel cell devices. Here, three-dimensional (3D) N-doped porous carbon (NPC) materials have been successfully developed by a simple template-assisted (e.g., SiO2 spheres) high temperature pyrolysis approach using shrimp-shell derived N-doped carbon nanodots (N-CNs) as carbon and nitrogen sources obtained through a facile hydrothermal method. The shrimp-shell derived N-CNs with a product yield of ∼5% possess rich surface O- and N-containing functional groups and small nanodot sizes of 1.5-5.0 nm, which are mixed with surface acidification treated SiO2 spheres with an average diameter of ∼200 nm in aqueous solution to form a N-CNs@SiO2 composite subjected to a thermal evaporation treatment. The resultant N-CNs@SiO2 composite is further thermally treated in a N2 atmosphere at different pyrolysis temperatures, followed by acid etching, to obtain 3D N-doped porous carbon (NPC) materials. As electrocatalysts for oxygen reduction reaction (ORR) in alkaline media, the experimental results demonstrate that 3D NPC obtained at 800 °C (NPC-800) with a surface area o...Continue Reading

References

Dec 6, 2011·Journal of the American Chemical Society·Yan LiLiangti Qu
Sep 13, 2014·Journal of the American Chemical Society·Tian Yi MaShi Zhang Qiao
May 6, 2015·Chemical Reviews·Liming DaiJong-Beom Baek
Sep 21, 2014·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Naiyun LiuZhenhui Kang

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Citations

Dec 28, 2018·Advanced Materials·Zhengping ZhangFeng Wang
Jul 2, 2019·Current Pharmaceutical Design·Baskar ThangarajSrinivasan Ranganathan
Feb 23, 2020·Journal of Fluorescence·Smrithi Sailaja Prasannakumaran NairPrasanna Kumar S G
Dec 6, 2017·Advanced Materials·Maryam BorgheiOrlando J Rojas
Apr 28, 2018·Marine Drugs·Anna Ilnicka, Jerzy P Lukaszewicz
Oct 13, 2020·Methods and Applications in Fluorescence·Nagaraju Kottam, Smrithi S P
Nov 18, 2017·Environmental Science & Technology·Yan-Fang GuanHan-Qing Yu

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