Hausmannite Mn3O4 functionalized graphene Oxide-NaClO system for oxidative desulfurization and denitrogenation of fuel oils

NiSe and Fe-Based Layerd Double Hydroxide Nanosheet/Ni Foam Bifunctional Catalyst for Water Splitting

“…The exchange current density ( j 0 ) is an important indicator to evaluate catalytic activity, which can be calculated from the Tafel plots using an extrapolation method . As exhibited in Figure S14, except Pt/C/NF (1.67 mA cm –2 ), NiSe@NiFe-LDH/NF owns a higher J 0 value of 0.56 mA cm –2 than those of NiSe x /NF (0.37 mA cm –2 ), NiFe-LDH/NF (0.27 mA cm –2 ), and NF (0.1 mA cm –2 ), demonstrating its better intrinsic catalytic activity Figure d exhibits the Nyquist plots of the investigated catalysts at −0.2 V. The R ct of NiSe@NiFe-LDH/NF is 6.3 Ω, which is much smaller than those of NiSe x /NF (11.49 Ω), NiFe-LDH/NF (28.7 Ω), and bare NF (49.16 Ω).…”

“…The crystal phases of catalysts can be successfully studied by XRD, and hence, the crystallinity results of the prepared catalysts shown in Figure a indicate that all of the samples possess two strong diffraction peaks from the substrate Ni (JCPDS No. 04-0850, marked with *).…”

“…27 As exhibited in Figure S14, except Pt/C/NF (1.67 mA cm −2 ), NiSe@NiFe-LDH/NF owns a higher J 0 value of 0.56 mA cm −2 than those of NiSe x /NF (0.37 mA cm −2 ), NiFe-LDH/NF (0.27 mA cm −2 ), and NF (0.1 mA cm −2 ), demonstrating its better intrinsic catalytic activity. 33 Figure 5d exhibits the Nyquist plots of the investigated catalysts at −0.2 V. The R ct of NiSe@NiFe-LDH/NF is 6.3 Ω, which is much smaller than those of NiSe x / NF (11.49 Ω), NiFe-LDH/NF (28.7 Ω), and bare NF (49.16 Ω). The smaller R ct for NiSe@NiFe-LDH/NF implies faster electron transfer and better HER performance.…”

“…The crystal phases of catalysts can be successfully studied by XRD, 33 and hence, the crystallinity results of the prepared catalysts shown in Figure 3a XPS provides the chemical valence state and surface compositions of materials 34 and hence was applied to study the prepared catalysts. Figure S5a shows the full survey spectra of NiSe@NiFe-LDH/NF, NiSe x /NF, and NiFe-LDH/NF, demonstrating the coexistence of Ni, Fe, Se, O, and C elements in NiSe@NiFe-LDH/NF.…”

Preparation of an rGO and iron oxide nanoparticle-incorporated polyvinyl acetate based membrane for the removal of Pb2+ from anticorrosive paint industrial wastewater

“…40 3.1.3 SEM studies. SEM characterizes the surface morphology, particle size, shape and distribution of materials; 42,43 thus the prepared hybrid membrane was characterized by SEM. Fig.…”