Rapid synthesis of efficient Mo-based electrocatalyst for the hydrogen evolution reaction in alkaline seawater with 11.28% solar-to-hydrogen efficiency

Abstract

Herein, we applied a rapid Joule heating method to fabricate MoNi4 nanoparticles anchored on MoOx nanorods (MoNi4/MoOx) for electrocatalytic splitting of seawater. Compared to traditional calcination method, Joule heating method...

Ultrafast carbothermal shocking fabrication of cation vacancy-rich Mo doped Ru nanoparticles on carbon nanotubes for high-performance water/seawater electrolysis

“…shows a significant 10.39% STH conversion efficiency in alkaline seawater splitting under simulated AM1.5G 100 mW cm −2 illumination. 26,52 Fig. 7d shows a photo-driven water-splitting system, indicating that Mo–Ru/CNTs//RuO 2 had a potential application prospect in light-driven water decomposition systems.…”

“…[23][24][25] Meanwhile, rapid heating and cooling also easily result in the formation of structural distortions and defects, thus providing rich uncoordinated catalytic sites. 26 For instance, Chen et al designed FeS 2 nanoparticles on the surface of reduced graphene oxide (RGO) by rapid heating. Due to the rapid cooling process, Fe and S atoms could nucleate on the surface defects of the RGO nanosheets, and nally a good HER activity (139 mV @ 10 mA cm −2 ) was achieved.…”

An interface-engineered Co2P/CoMoP2 heterojunction with greatly improved electrocatalytic activity in water/seawater splitting

“…A self-designed membrane electrode assembly (MEA) electrochemical reactor, constructed from titanium alloy and employing anion exchange membranes (type: FAA-3-50) to separate generated oxygen and hydrogen, was utilized to simulate hydrogen production through water electrolysis in practical applications. 8,9…”

“…Consequently, developing highly active and low-cost non-precious metal-based catalysts becomes a viable solution to tackle these issues. 8,9 Unfortunately, seawater as an electrolyte introduces new challenges, including a significant number of impurity ions (Ca 2+ , Mg 2+ , Cl − , etc.) and organic microorganisms.…”

Joule Heating Synthesis of Cobalt Molybdate with Unsaturated Mo4+ Coordination for Greatly Enhanced Electrocatalytic Nitrate Reduction to Ammonia

“…In recent years, Joule heating has been regarded as one of the innovative and effective methods for preparing electrochemical catalysts due to its advantages such as rapid heating and cooling rate. − Throughout the Joule heating process, the catalyst quickly attains ultrahigh temperatures within a short time frame, effectively mitigating the issue of catalyst overoxidation associated with the slow heating in traditional tubular furnace Joule heating. − Simultaneously, this ultrafast heating and cooling rate can effectively prevent the agglomeration of the catalyst particles. It also induces structural distortions in the catalyst, enhancing its conductivity and thereby providing abundant catalytic active sites. ,, …”