Direct Synthesis of Metal-Doped Phosphorene with Enhanced Electrocatalytic Hydrogen Evolution
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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Detail(s)
Original language | English |
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Article number | 1900083 |
Journal / Publication | Small Methods |
Volume | 3 |
Issue number | 7 |
Online published | 10 Apr 2019 |
Publication status | Published - 10 Jul 2019 |
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Abstract
2D materials with large specific surface area and robust mechanical properties are appropriate for electrocatalysis. However, the unsatisfactory adsorption energy and limited active sites restrict their commercial application. Herein, a facile and rapid electrochemical strategy enabling synchronous exfoliation and doping is designed to directly synthesize metaldoped 2D materials from the bulk crystals. By using black phosphorus as a model, various metal doped phosphorene such as BP(Co), BP(Mo), and BP(Ni) is obtained, and a synergistic synthesis mechanism is proposed. Notably, the dopant introduces electronic band transformation, charge redistribution, and state occupation confirmed by density functional theory calculations. Owing to the enhanced electro-conductivity, abundant metal-P active sites, and optimized adsorption energy by doping, the BP(metal) exhibits enhanced hydrogen evolution reaction activities and stability in comparison to the bare phosphorene. Particularly, BP(Co) presents highest activity with a potential of 0.294 V at 10 mA cm−2 (the current density is normalized with electrochemical surface area by using a double-layer capacitance method). This study provides new access to synthesize highly efficient electrocatalysts, and also enriches the structure modulation means for layered 2D materials.
Research Area(s)
- 2D materials, black phosphorus, electrocatalyst, metal doping, phosphorene
Citation Format(s)
Direct Synthesis of Metal-Doped Phosphorene with Enhanced Electrocatalytic Hydrogen Evolution. / Liu, Danni; Wang, Jiahong; Lu, Jiang et al.
In: Small Methods, Vol. 3, No. 7, 1900083, 10.07.2019.
In: Small Methods, Vol. 3, No. 7, 1900083, 10.07.2019.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review