RT journal article
T1 Rapid and eco-friendly ultrasonic exfoliation of transition metal dichalcogenides supported on sonogel-nanocarbon black: A non-precious electrocatalyst for hydrogen evolution reaction
A1 Berni, Achraf
A1 García Guzmán, Juan José
A1 Alcántara Puerto, Rodrigo
A1 Palacios Santander, José María
A1 Amine, Aziz
A1 Cubillana Aguilera, Laura
A2 Química Analítica
A2 Química Física
K1 Carbon black
K1 Hydrogen evolution reaction
K1 Sonogel-carbon electrodes
K1 Transition metal dichalcogenides nanosheets
K1 Ultrasonic liquid phase exfoliation
AB Recently, there has been growing interest in replacing expensive platinum-based catalysts with cost-effective non-precious metal alternatives for water electrolysis aimed at hydrogen production. This study introduces an innovative, green, and cost-effective strategy for the development of non-precious electrocatalysts by leveraging sodium alginate-mediated ultrasonic exfoliation to produce transition metal dichalcogenide (TMD) nanosheets. These nanosheets are supported on Sonogel-Carbon electrodes (SGC), providing a novel conductive base for HER catalysis. Using a diverse array of TMD materials, including MoS2, MoSe2, WS2, and WSe2, we assess their catalytic activity towards HER. The study demonstrates significantly enhanced HER performance through bulk modification of the electrodes with nanocarbon black (SGC-CB). This enhancement is primarily due to the synergistic effects of improved electron transfer and increased active site availability, facilitated by the unique structural properties of the exfoliated TMD nanosheets and the conductive Sonogel-Carbon substrate. Notably, the optimized MoSe2NS-SGC-CB configuration achieves an exceptional overpotential of 240 mV at a current density of 10 mA/cm2, surpassing conventional bulk catalysts and highlighting the potential of sodium alginate as a viable dispersing agent for the large-scale production of TMD nanosheets. The operational stability and cost-effectiveness of this electrocatalyst, combined with its environmental friendliness, mark a significant step forward in the pursuit of sustainable hydrogen fuel production technologies.
PB Elsevier
SN 0360-3199
YR 2024
FD 2024
LK http://hdl.handle.net/10498/35797
UL http://hdl.handle.net/10498/35797
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 09-nov-2026