One-step hydrothermal synthesis of monolayer MoS₂ quantum dots for highly efficient electrocatalytic hydrogen evolution

Abstract

Monolayer MoS2 QDs were prepared via a facile hydrothermal process and exhibited excellent catalytic activity for the hydrogen evolution reaction.

CdS/MoS 2 heterojunction-based photoelectrochemical DNA biosensor via enhanced chemiluminescence excitation

“…For instance, MoS 2 nanosheets-coated TiO 2 nanobelt exhibited a desirable photocatalytic hydrogen reaction activity, suggesting the matched energy band of TiO 2 @MoS 2 hybrids favor the suppression of photoelectron-hole recombination (Zhou et al, 2013). When ultrathin MoS 2 nanosheets were confined to zero dimensions, the MoS 2 QDs would give rise to the interesting physical ϯ properties with abundant exposed catalytic edge sites and excellent intrinsic conductivity of monolayer structure (Gopalakrishnan et al, 2015;Ren et al, 2015). However, studies on MoS 2 QDs-based biosensing have been less reported owing to the lack of surface functional groups.…”

MoS2 Decorated Carbon Nanofibers as Efficient and Durable Electrocatalyst for Hydrogen Evolution Reaction

“…Tafel plots of all the samples are given in Figure 4b. Commercial Pt/C electrocatalyst showed a Tafel slope of 39 mV/decade, whereas MoS 2 -commercial, MoS 2 -synthesized and MoS 2 grown over CNFs showed a Tafel slope of [45]. MoS 2 grown on Toray paper, MWCNT, and CNT/graphene showed a Tafel slope of 120, 109 and 100 mV/decade, respectively [41,46,47].…”

“…Lithium intercalated MoS2 showed a Tafel slope of 62 mV/decade [22]. Ren et al have synthesized monolayer of MoS2 quantum dots and observed a Tafel slope of 59 mV/decade [45]. MoS2 grown on Toray paper, MWCNT, and CNT/graphene showed a Tafel slope of 120, 109 and 100 mV/decade, respectively [41,46,47].…”

3D MoS2-Graphene Composite as Catalyst for Enhanced Efficient Hydrogen Evolution

“…5B shows the Tafel plots for the all catalysts. The Tafel slope determined by Tafel plots andthe linear portions are fitted into the Tafel equation, h = a +b log (j0) ( a is the Tafel constant b is the Tafel slope , j0is the exchange current density), which reveals the intrinsic properties of the electrocatalyst materials [30,31]. A small Tafel slopes of 66 mV/dec for MoS2-RGO-3, which is much smaller than the Tafel slope of the MoS2 (∼162 mV/dec) and other MoS2-RGO samples (MoS2-RGO-1 ∼98 mV/dec, MoS2-RGO-2 ∼ 96 mV/dec and MoS2-RGO-4 ∼ 215 mV/dec).…”