Hollow multi-shelled NiO nanoreactor for nanoconfined catalytic degradation of organic pollutants via peroxydisulfate activation

Promoting the electrocatalytic activity through the introduction of oxygen vacancies to core–shell NiO hollow sphere catalysts for efficient oxygen evolution

“…From the Raman spectrum of NiO spheres, the two peaks at 499 cm −1 and 1098 cm −1 correspond to the one phonon longitudinal optical (LO) and two phonon longitudinal optical (2LO) modes of NiO, respectively. 9,37 In comparison to NiO spheres, the peaks of NiO 1− x -M spheres shift to the left, which confirms the finding that there are abundant oxygen vacancies in the NiO 1− x -M spheres. 46–48…”

“…[1][2][3][4][5][6][7] Among them, NiO has been widely studied in recent years due to its electrocatalytic active site, excellent electrical conductivity, low cost and application in other electrochemical devices. [8][9][10][11][12] However, most of the research on NiO has focused on its application as an electrocatalyst for the HER, and few studies have used NiO as an electrocatalyst for the OER, which has stimulated study on the electrocatalytic activity of NiO toward the OER in alkaline media. This is because the performance of NiO as an oxygen evolution catalyst is not satisfactory.…”

Ni/Fe Bimetallic Atom Cluster Activate PMS To Promote 1O2 Production To Efficiently Remove BPA

“…In catalytic systems, assessing the stability and reusability of catalysts is a key factor in selecting catalysts and reducing costs [36,37] . To further evaluate the stability of the Ni 3 Fe 1 −BC catalyst, the continuous degradation of BPA is studied.…”

Mesoscience in Hollow Multi‐Shelled Structures

“…For example, by bumping the calcination temperature, the formation of NiO HoMS with different shells is the result of the EMMS principle within the mesoscale divided by amorphous Ni‐based templates and highly crystallized NiO nanoparticles, as discussed in the last section. [ 90 ] The increasing crystallinity of NiO building blocks competes with the amorphous nature of the NiO precursors, which allows the changing in the morphology and porosity of NiO shells ( Figure a). Moreover, as crystallization would happen after the formation of HoMS, crystal growth by simple heat treatment gives a superficial example of the influence of crystallinity on the structural and physicochemical properties of HoMS.…”

“…a) Schematic diagram for the formation of NiO HoMS with different shell numbers. [ 90 ] Reproduced with permission. Copyright 2016, Elsevier.…”