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Research Article

Building the bridge of small organic molecules to porous carbons via ionic solid principle

Lei Tong1,2, Qian-Qian Yang2, Shuai Li2, Le-Le Zhang2, Wei-Jie Zeng2, Yan-Wei Ding2, Liangdong Fan1( ), Hai-Wei Liang2( )
Department of New Energy Science and Technology, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
Hefei National Research Center for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
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Graphical Abstract

A general and controllable methodology is developed to prepare nanostructured carbon materials from small organic molecules, which involves converting small organic molecules into ionic solids followed by carbonization.

Abstract

Replacing traditional polymer-based precursors with small molecules is a promising pathway toward facile and controllable preparation of porous carbons but remains a prohibitive challenge because of the high volatility of small molecules. Herein, a simple, general, and controllable method is reported to prepare porous carbons by converting small organic molecules into organic molecular salts followed by pyrolysis. The robust electrostatic force holding organic molecular salts together leads to negligible volatility and thus ensures the formation of carbons under high-temperature pyrolysis. Meanwhile, metal moieties in organic molecular salts can be evolved into in-situ templates or activators during pyrolysis to create nanopores. The modular nature of organic molecular salts allows easy control of the porosity and chemical doping of carbons at a molecular level. The sulfur-doped carbon prepared by the ionic solid strategy can serve as robust support to prepare small-sized intermetallic PtCo catalysts, which exhibit a high mass activity of 1.62 A·mgPt−1 in catalyzing oxygen reduction reaction for fuel cell applications.

Keywords

porous carbonsmall organic moleculesorganic molecular saltsionic solidoxygen reduction reaction

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Nano Research
Volume 16 Issue 1,
January 2023
Pages 80-87
DOI: 10.1007/s12274-022-4997-8
Cite this article:
Tong L, Yang Q-Q, Li S, et al. Building the bridge of small organic molecules to porous carbons via ionic solid principle. Nano Research, 2023, 16(1): 80-87. https://doi.org/10.1007/s12274-022-4997-8
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Received: 13 July 2022
Revised: 30 August 2022
Accepted: 31 August 2022
Published: 22 October 2022
© Tsinghua University Press 2022
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