MoS2 nanosheets grown vertically on N-doped carbon nanotubes embedded CoP nanoparticles for efficient hydrogen evolution

Ni-Doped Co3S4 Hollow Nanobox for the Hydrogen Evolution Reaction

“…The slopes have raised with the increment of the Ni content, implying that the speed of mass transport would accelerate under the effect of Ni 2+ . 37 The ECSA of Ni−Co NPs can be owed to the fact that the unique hollow structure is not only beneficial for the contact between the electrolyte and active sites but also endows abundant active sites for the HER. The hydrothermal condition is critical to affecting the structure; therefore, the hydrothermal temperature was adjusted to find the most optimized temperature.…”

Structural Engineering of Nitrogen‐Doped MoS2 Anchored on Nitrogen‐Doped Carbon Nanotubes towards Enhanced Hydrogen Evolution Reaction

“…Among, the metallic Mo−N configuration confirms that N atoms can in‐situ replace the S atoms in MoS 2 lattices by partly breaking the Mo−S bond to create more structural defects, realizing highly exposed active sites (Mo−S x ) on MoS 2 basal planes/edges [13,14,35] . Meanwhile, the N atoms doped into CNTs exist in pyridinic N, pyrrolic N and graphitic N, which can improve the intrinsic activity of carbon materials and contribute to the interface coupling between MoS 2 and CNTs [36,37] . The C 1s spectra of N−MoS 2 /N−CNTs (Figure 4b and Figure S6) shows the peak of C−N bonds (285.3 eV), reconfirming the incorporation of N species into CNTs lattices [38] .…”

“…[13,14,35] Meanwhile, the N atoms doped into CNTs exist in pyridinic N, pyrrolic N and graphitic N, which can improve the intrinsic activity of carbon materials and contribute to the interface coupling between MoS 2 and CNTs. [36,37] The C 1s spectra of NÀ MoS 2 /NÀ CNTs (Figure 4b and Figure S6) shows the peak of CÀ N bonds (285.3 eV), reconfirming the incorporation of N species into CNTs lattices. [38] Furthermore, the percentages of MoÀ N and CÀ N bonds were estimated by the XPS fitting peak area.…”

MoS2 Nanosheets Functionalized Multichannel Hollow Mo2N/Carbon Nanofibers as a Robust Bifunctional Catalyst for Water Electrolysis

“…Similar results can be obtained from the XRD patterns of Mo 2 N–MoS 2 (1:0.5) MCNFs and Mo 2 N–MoS 2 (1:2) MCNFs as presented in SI Figure S8a. Raman spectra in Figure b advertises that both Mo 2 N–MoS 2 (1:1) MCNFs and Mo 2 N/Carbon MCNFs possess a pair of peaks at 1335 and 1589 cm –1 , representing the D and G bands of carbon materials, respectively. , The I D / I G ratio of Mo 2 N–MoS 2 (1:1) MCNFs (0.99) is smaller than that of Mo 2 N/Carbon MCNFs (1.07), demonstrating that the synthesized Mo 2 N–MoS 2 (1:1) MCNFs present a higher graphene quality in comparison to Mo 2 N/Carbon MCNFs. , This might profit from the successful consolidation of MoS 2 and Mo 2 N/Carbon MCNFs, which could form a unique heterostructure to adjust the internal electronic structure and distribution of Mo 2 N–MoS 2 (1:1) MCNFs, and then exhibit better graphitic degree and conductivity.…”

“…Figure 1i 40,41 The I D /I G ratio of Mo 2 N−MoS 2 (1:1) MCNFs (0.99) is smaller than that of Mo 2 N/Carbon MCNFs (1.07), demonstrating that the synthesized Mo 2 N− MoS 2 (1:1) MCNFs present a higher graphene quality in comparison to Mo 2 N/Carbon MCNFs. 42,43 This might profit from the successful consolidation of MoS 2 and Mo 2 N/Carbon MCNFs, which could form a unique heterostructure to adjust the internal electronic structure and distribution of Mo 2 N− MoS 2 (1:1) MCNFs, 44 and then exhibit better graphitic degree and conductivity.…”