Fe-Co spinel oxides supported UiO-66-NH2 derived zirconia/ N-dopped porous hollow carbon as an efficient oxygen reduction reaction electrocatalyst

A comparative study of α-Ni(OH)2 and Ni nanoparticle supported ZIF-8@reduced graphene oxide-derived nitrogen doped carbon for electrocatalytic ethanol oxidation

“…In the potential window ranging between −0.2 and 0.6 V, the cyclic voltammetry (CV) technique was applied at a scan rate of 50 mV s −1 . Moreover, the CV measurements were performed from −0.1 to 0.0 V at various scan rates of 20–150 mV s −1 to evaluate the electrochemical active surface area (ECSA) of the electrocatalysts which was conducted as follows: 35,36 where C s and C dl are the specific capacitance of the catalysts (0.035 mF cm −2 ) in an alkaline medium for nickel-based catalysts and the capacitance of the electrochemical double layer which is counted using the slope of the linear fitting of the current density versus scan rates, respectively.…”

“…[31][32][33][34] MOFs are distinguished by high porosity and surface area, the difference in pore size, structure, shape, high conductivity, and catalytic activity. 32,[35][36][37][38] Through the pristine MOFs, the active sites for redox reactions were enclosed by the organic ligands inhibiting their conductivity. 39 However, the high-temperature thermal treatment can produce highly conductive porous materials as the organic linker is transformed into a porous carbonaceous platform and metal cations are oxidized to metal oxide which are uniformly dispersed on the carbon surface.…”

Catalytic Hydrogenation of Furfural over UiO‐66‐NH2‐derived Ru‐based Catalysts: Precursor Coordination Structure for Enhanced Catalysis

“…The XPS of C 1s exhibits three peaks corresponding to CÀ C/C=C (~284.8 eV, graphitic carbon), CÀ N (~286.0 eV), and CÀ N=C (~288.2 eV, sp 2bonded carbon) (Figure 5e). [33,34] Compared with Ru/C-ZrO 2 , the surface of Ru/NC-ZrO 2 contains more N and C element, but the atomic concentration of Ru decreases (Table 2). The reason is that 2-pyridinecarboxaldehyde was introduced to form Schiff base UiO-66-Pyr, which increase the N and C content.…”

Selective Reduction of Multivariate Metal–Organic Frameworks for Advanced Electrocatalytic Cathodes in High Areal Capacity and Long-Life Lithium–Sulfur Batteries

“…MOFs are highly designable porous materials constructed from organic linkers and metal ions. With a judicious selection of metal ions and organic linkers, physicochemical properties can be fine-tuned to address a broad range of applications, such as gas storage and separation, catalysis, sensing, and electrochemical energy storage. − In particular, MOFs and their derivatives were recently applied in the energy storage field. , Moreover, the calcination of MOFs provides metals and metal oxide embedded in conductive porous carbon, maximizing the possibility of electronic conductivity and allowing for easy access to lithium ions . Pristine MOFs used as electrodes in batteries have been mainly restricted by their stability issues, low capacity, poor conductivity, and weak adhesion to the substrate.…”

“…24−26 In particular, MOFs and their derivatives were recently applied in the energy storage field. 27,28 Moreover, the calcination of MOFs provides metals and metal oxide embedded in conductive porous carbon, maximizing the possibility of electronic conductivity and allowing for easy access to lithium ions. 29 Pristine MOFs used as electrodes in batteries have been mainly restricted by their stability issues, low capacity, poor conductivity, and weak adhesion to the substrate.…”