2021年5月17日上午，郑勇同学顺利通过其博士学位论文答辩，其博士论文的题目为“共价三嗪聚合物衍生杂原子掺杂碳纳米材料的结构构筑及其电催化性能研究”。郑勇同学现就职于三峡大学材料与化工学院，任讲师。郑勇同学在攻读博士学位期间所发表的部分代表作如下：

1. Y. Zheng, S. Chen, K. Zhang*, J. Zhu, J. Xu, C. Zhang* and T. Liu, Ultrasound-triggered assembly of covalent triazine framework for synthesizing heteroatom-doped carbon nanoflowers boosting metal-free bifunctional electrocatalysis, ACS Appl. Mater. Interfaces, 2021, 13, 13328.

2. Y. Zheng, H. Song, S. Chen, X. Yu, J. Zhu, J. Xu, K. Zhang*, C. Zhang* and T. Liu, Metal-free multi-heteroatom-doped carbon bifunctional electrocatalysts derived from a covalent triazine polymer, Small, 2020, 16, 2004342.

3. Y. Zheng, S. Chen, H. Song, H. Guo, K. Zhang*, C. Zhang* and T. Liu, Nitrogen-doped hollow carbon nanoflowers from a preformed covalent triazine framework for metal-free bifunctional electrocatalysis, Nanoscale, 2020, 12, 14441.

4. Y. Zheng,^# S. Chen,^# H. Lu, C. Zhang* and T. Liu*, 3D honeycombed cobalt, nitrogen co-doped carbon nanosheets via hypersaline-protected pyrolysis towards efficient oxygen reduction, Nanotechnology, 2020, 31, 364003. (#: co-first author.)