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Synthesis of Ultrathin and Grid-Structural Carbon Nanosheets Coupled with Mo2C for Electrocatalytic Hydrogen Production |
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| Authors: | Qianqian Du Dr Ruihua Zhao Xiaojun Chen Lu Liu Shaoyang Zhang Dr Tianyu Guo Prof Jianping Du Jinping Li |
| Institution: | 1. College of Chemistry and Chemical Engineering, Taiyuan University of Technology, No. 79 Yingze weststreet, Taiyuan, 030024 Shanxi, P. R. China;2. College of Environment Science and Engineering, Taiyuan University of Technology, No. 209 University Street, Jinzhong, 030600 P. R. China
Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization No.79, Yingze west street, Taiyuan, 030024 Shanxi, P. R. China |
| Abstract: | Molybdenum carbide possessing a Pt-like d-band electronic structure is considered as one of potential candidates of electrocatalysts and it shows intrinsic catalytic property. However, a high carbonizing temperature easily leads to the coalescence of nanoparticles (NPs). Here, we propose a simple sol-gel route to achieve high dispersity of carbide NPs by designing a Mo-involved xerogel. The results show that molybdenum carbide NPs are dispersed and anchored on the nitrogen-doped carbon nanosheets (Mo2C@NC). Ultrathin carbon layers resemble graphene and the network structures act as a support of carbide NPs, which can hinder NPs’ coalescence effectively. Nanpoparticles cross-coupled on network-structure nanosheets display the grid shapes. Electrochemical studies indicate that Mo2C@NC material exhibits outstanding hydrogen evolution performance in alkaline electrolyte. |
| Keywords: | net-like carbon nanosheets Mo2C Mo-xerogel design electrocatalyst HER |