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Updated: Feb 5, 2026

Preparation of Carbon Nanosheets at Room Temperature
Published on: March 8, 2016
Controllable synthesis of carbon nanosheets derived from oxidative polymerisation of m-phenylenediamine
Liyuan Zhang1, Liyuan Chai2, Mengran Wang2
1Environmental Engineering Research Centre, Department of Civil Engineering, The University of Hong Kong, Hong Kong, China.
Abstract:
Synthesis of high-quality carbon nanosheets with superior physicochemical properties is of particular importance for environmental and catalytic applications. In this research, carbon nanosheets with tunable porosity were successfully synthesized using two-dimensional (2D) poly(m-phenylenediamine) (PmPD) as precursor. The flat polymer precursor was acquired by oxidative polymerisation of m-phenylenediamine coupled with iron ions coordination, which confined an anisotropic growth of polymer within the 2D directions. Moreover, the addition of H2O after the polymerisation is able to indirectly regulate the porosity of the carbon nanosheets. The carbon nanosheets with controllable porosity realize comparable electrocatalytic activity for oxygen reduction reaction as compared with commercial Pt/C, indicative of great potential to serve as noble metals candidates in the application of zinc/air batteries.
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