Related Experiment Video
Updated: Feb 12, 2026

Preparation of Carbon Nanosheets at Room Temperature
Published on: March 8, 2016
Vanadium-Doped WS2 Nanosheets Grown on Carbon Cloth as a Highly Efficient Electrocatalyst for the Hydrogen Evolution
Anning Jiang1, Baohua Zhang1, Zhonghao Li1
1Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, 250100, P. R. China.
Abstract:
Two-dimensional transition-metal dichalcogenides have been widely studied as electrocatalysts for the hydrogen evolution reaction (HER). However, limited active sites and poor conductivity hinder their application. To solve these disadvantages, heteroatom doping has attracted wide attention because it can not only increase the active sites but also affect the intrinsic catalytic properties of the electrocatalyst. Herein, we grew vanadium-doped WS2 nanosheets on carbon cloth (V-WS2 /CC) as an electrocatalyst for HER under acidic and alkaline conditions. With a proper vanadium doping concentration, the electrochemical surface areas of V0.065 -WS2 /CC were 9.6 and 2.6 times as large as that of pure WS2 electrocatalyst under acidic and alkaline conditions, respectively. In addition, the charge-transfer resistance also decreased with moderate vanadium doping. Based on this, the synthesized vanadium-doped WS2 nanosheets exhibited good stability with high HER catalytic activity and could reach a current density of 10 mA cm-2 at overpotentials of 148 and 134 mV in 0.5 m H2 SO4 and 1 m KOH, respectively. The corresponding Tafel slopes were 71 and 85 mV dec-1 . Therefore, our synthesized vanadium-doped WS2 nanosheets can be a promising electrocatalyst for the production of hydrogen over a wide pH range.
More Related Videos
08:40Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
Published on: December 6, 2021
11:58Synthesis and Functionalization of Nitrogen-doped Carbon Nanotube Cups with Gold Nanoparticles as Cork Stoppers
Published on: May 13, 2013
Related Concept Videos
The Evidence for Evolution
Convergent Evolution
Hydrogen Bonds
Hydrogen Bonds Control the World!
Because hydrogen has very weak electronegativity when it binds with a strongly electronegative atom, such as oxygen or nitrogen, electrons in the bond are unequally shared....
The Carbon Cycle
Chemical Reactions
Chemical Reactions Rearrange Atoms into New Substances
A chemical reaction takes starting materials—the reactants—and changes them...
Enthalpies of Reaction