CoP as an Acid-Stable Active Electrocatalyst for the Hydrogen-Evolution Reaction: Electrochemical Synthesis, Interfacial Characterization and Performance Evaluation
Fadl H. Saadi,Azhar I. Carim,Erik Verlage,John C. Hemminger,Nathan S. Lewis,Manuel P. Soriaga +5 more
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In this paper, a CoP film was synthesized by cathodic deposition from a boric acid solution of Co2+ and H2PO2 on copper substrates followed by operando remediation of exogenous contaminants.Abstract:
Films of CoP have been electrochemically synthesized, characterized, and evaluated for performance as a catalyst for the hydrogen-evolution reaction (HER) The film was synthesized by cathodic deposition from a boric acid solution of Co2+ and H2PO2– on copper substrates followed by operando remediation of exogenous contaminants The films were characterized structurally and compositionally by scanning-electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and Raman spectrophotometry The catalytic activity was evaluated by cyclic voltammetry and chronopotentiometry Surface characterization prior to electrocatalysis indicated that the film consisted of micrometer-sized spherical clusters located randomly and loosely on a slightly roughened surface The composition of both the clusters and surface consisted of cobalt in the metallic, phosphide, and amorphous-oxide forms (CoO·Co2O3) and of phosphorus as phosphide and orthophosphate The orthophosphate species, produced read more
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Noble metal-free hydrogen evolution catalysts for water splitting
Xiaoxin Zou,Yu Zhang +1 more
TL;DR: This review highlights the recent research efforts toward the synthesis of noble metal-free electrocatalysts, especially at the nanoscale, and their catalytic properties for the hydrogen evolution reaction (HER), and summarizes some important examples showing that non-Pt HER electrocatsalysts could serve as efficient cocatalysts for promoting direct solar-to-hydrogen conversion in both photochemical and photoelectrochemical water splitting systems, when combined with suitable semiconductor photocatalyst.
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Recent advances in transition metal phosphide nanomaterials: synthesis and applications in hydrogen evolution reaction
Yanmei Shi,Bin Zhang +1 more
TL;DR: An overview of recent development of TMP nanomaterials as catalysts for hydrogen generation with high activity and stability is presented, and specific strategies to further improve the catalytic efficiency and stability of T MPs by structural engineering are demonstrated.
Journal ArticleDOI
Electrocatalysts for Hydrogen Evolution in Alkaline Electrolytes: Mechanisms, Challenges, and Prospective Solutions
TL;DR: This review summarizes the recent developments to overcome the kinetics issues of alkaline HER, synthesis of materials with modified morphologies, and electronic structures to tune the active sites and their applications as efficient catalysts for HER.
Journal ArticleDOI
Metal–Organic Frameworks in Heterogeneous Catalysis: Recent Progress, New Trends, and Future Perspectives
TL;DR: In this review, the recent advances in the application of MOFs in heterogeneous catalysis are discussed and the personal view on future research directions is wrapped up.
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Electrodeposited Cobalt-Phosphorous-Derived Films as Competent Bifunctional Catalysts for Overall Water Splitting
TL;DR: It is reported that cobalt-phosphorous-derived films (Co-P) can act as bifunctional catalysts for overall water splitting with 100% Faradaic efficiency, rivalling the integrated performance of Pt and IrO2.
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