Ce–Metal–Organic Framework-Derived CeO2–GO: An Efficient Electrocatalyst for Oxygen Evolution Reaction
نویسندگان
چکیده
The oxygen evolution reaction (OER) is a crucial half-reaction in water splitting. However, this kinetically sluggish owing to the four-electron (4 e−) transfer process. Therefore, development of low-cost, stable, highly efficient, and earth-abundant electrocatalysts for OER desirable. Metal oxides derived from metal–organic frameworks (MOFs) are among most efficient OER. Herein, Ce–MOF-derived CeO2/graphene oxide (GO) composites were successfully prepared using facile method. with 0, 25, 50, 100 mg GO named CeO2, CeO2–GO-1, CeO2–GO-2, CeO2–GO-3, respectively. physicochemical characteristics assessed several analytical techniques, including X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission (HR-TEM), photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET) analysis. TEM results revealed that CeO2 had sheet-like morphology layer was noticeable synthesized CeO2–GO-3 composite. characterization confirmed formation impurity-free CeO2–GO composites. activity stability measured cyclic voltammetry (CV), linear sweep (LSV), chronoamperometry (CA), electrochemical impedance (EIS). electrocatalyst has smaller Tafel slope (176 mV·dec−1) lower overpotential (240 mV) than other electrocatalysts. In addition, it exhibited high up 10 h. inexpensive promising candidate.
منابع مشابه
Polyaniline-Derived Ordered Mesoporous Carbon as an Efficient Electrocatalyst for Oxygen Reduction Reaction
Nitrogen-doped ordered mesoporous carbon was synthesized by using polyaniline as the carbon source and SBA-15 as the template. The microstructure, composition and electrochemical behavior were extensively investigated by the nitrogen sorption isotherm, X-ray photoelectron spectroscopy, cyclic voltammetry and rotating ring-disk electrode. It is found that the pyrolysis temperature yielded a cons...
متن کاملPorous Nickel–Iron Oxide as a Highly Efficient Electrocatalyst for Oxygen Evolution Reaction
A porous Ni-Fe oxide with improved crystallinity has been prepared as a highly efficient electrocatalytic water oxidation catalyst. It has a small overpotential, a low Tafel slope, and an outstanding stability. The remarkably improved electrocatalytic performance is due to the porous structure, high extent homogeneous iron incorporation, ameliorative crystallinity, and the low mass transfer res...
متن کاملIntumescent flame retardant-derived P,N co-doped porous carbon as an efficient electrocatalyst for the oxygen reduction reaction.
An intumescent flame retardant (IFR), including melamine (MA), ammonium polyphosphate (APP), and polydopamine (PDA), was utilized as the precursor to prepare P,N co-doped hierarchically porous carbon which exhibited high electrocatalytic activity and durability for the oxygen reduction reaction (ORR). This finding indicates that an ingenious design of the precursor can lead to functional carbon...
متن کاملNanoporous carbon derived from a functionalized metal-organic framework as a highly efficient oxygen reduction electrocatalyst.
High levels of iron-nitrogen doped porous carbon materials are obtained from MOF-253 using a step-by-step post-synthetic modification strategy. MOF-253 possessing open 2,2'-bipyridine nitrogen sites not only serves as a precursor but also provides chelate bonding sites for Fe2+. Followed by further impregnation of 1,10-phenanthroline, high surface area porous carbon materials are obtained. For ...
متن کاملNanostructured Ni2P as an Electrocatalyst for the Hydrogen Evolution Reaction
S1 Nanostructured Ni2P as an Electrocatalyst for the Hydrogen Evolution Reaction Eric J. Popczun, James R. McKone, Carlos G. Read, Adam J. Biacchi, Alex M. Wiltrout, Nathan S. Lewis,* Raymond E. Schaak* 1 Department of Chemistry and Materials Research Institute, The Pennsylvania State University, University Park, PA 16802. 2 Division of Chemistry and Chemical Engineering, California Institute o...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Inorganics (Basel)
سال: 2023
ISSN: ['2304-6740']
DOI: https://doi.org/10.3390/inorganics11040161