Anodic deposition of NiOx water oxidation catalysts from macrocyclic nickel(ii) complexes

Singh, Archana; Chang, Shery L. Y.; Hocking, Rosalie K.; Bach, Udo; Spiccia, Leone

doi:10.1039/c3cy00017f

Cited by 58 publications

(49 citation statements)

References 36 publications

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“…Similarly, Spiccia and his research group disclosed a series of molecular nickel catalysts that decomposed into heterogeneous NiOx during catalytic oxidation process. 102 It is apparent that more work should be done in the area of water oxidation catalysis with molecular nickel complexes to extend the robustness and activity of catalysts. Stability of these catalysts is the key concern.…”

Section: Ni (Ii) Complexes As Heterogeneous Wocsmentioning

confidence: 99%

Earth-abundant metal complexes as catalysts for water oxidation; is it homogeneous or heterogeneous?

Asraf

Younus

Yusubov

et al. 2015

Catal. Sci. Technol.

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MINIREVIEW This journal isRecent developments in the oxidation of water to dioxygen using metal complexes as catalysts or precatalysts are represented at the side of the conversion of homogeneous catalysts into nanoparticles or heterogeneous one during the oxidation reaction of water. Homogeneous catalysts are advantageous within the careful design and elucidation of the mechanisms for the catalytic water oxidation. In distinction, the uses of heterogeneous catalysts in water oxidation are advantageous for sensible applications as a result of their robust catalytic activity. Though detailed studies on homogeneous and heterogeneous water oxidation reactions are performed rather severally, the connection of homogeneous catalysts with heterogeneous one is changing into an additional requirement for the event of economic attractive water oxidation catalysts (WOCs). This minireview focuses on the aspects if the particular catalysts for the oxidation of water are homogeneous or heterogeneous.

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Section: Ni (Ii) Complexes As Heterogeneous Wocsmentioning

confidence: 99%

Earth-abundant metal complexes as catalysts for water oxidation; is it homogeneous or heterogeneous?

Asraf

Younus

Yusubov

et al. 2015

Catal. Sci. Technol.

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“…In the present work, we present a facile method to electrodeposit nickel oxide (NiO) films on the Fluorine doped Tin oxide (FTO) glass substrate (these nickel oxide films are labelled as NiO (ED) , where the subscript "ED" stands for electrodeposited). Though, the electrodespoition of nickel oxides (NiO x ) is reported earlier both by cathodic 27,28 and anodic deposition 29 techniques, to our knowledge, there is no study reported so far that explained the effect of heat treatment on the electrodeposited nickel oxide films from aqueous media for improved catalytic performance for water oxidation. Our study reveals that the electrodeposited NiO (ED) films from aqueous media likely incorporate/take up huge amount of bound water that render the material amorphous in the as--deposited form and thereby affect their catalytic performances.…”

Section: Introductionmentioning

confidence: 99%

Heat treatment of electrodeposited NiO films for improved catalytic water oxidation

et al. 2015

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a Recognizing the superior electrocatalytic properties of Nickel oxide (NiO), we prepared cathodically electrodeposited Nickel Oxide (NiO) on Fluorine doped Tin oxide (FTO) glass substrate as binder free electrocatalysts for water oxidation.The electrodeposited Nickel oxide film (NiO(ED)) showed remarkable improvement for electrocatalytic water oxidation after heat treatment. In particular, the NiO(ED)−400 catalyst (electrodeposited nickel oxide film heat treated at 400°C) achieved appreciable current density ~ 5mA cm −2 for oxygen evolution reaction (OER) at the overpotential of 0.45 V vs RHE. These catalyst films were characterized for structural, morphological, thermal and electrochemical properties, where the results reveal that the dehydration during heat treatment permanently removes the structural water with a concomitant amorphous→crystalline transformation in NiO(ED) films, thereby making them more active catalyst for OER. In parallel investigations, nickel metal was electrodepoplated on stainless steel (SS) substrate, and was subsequently annealed in hot air to produce NiO(HA) films at different temperatures. The NiO(HA) films prepared by this method showed relatively high value of Tafel slopes and corresponding high overpotentials and low currents for OER, when compared to the NiO(ED) films.Hence, simple heat treatment of the cathodically electrodeposited nickel oxide (NiO(ED)) films showed remarkable improvements in their catalytic performances for oxygen evolution reaction, thereby making them efficient electrocatalysts for water oxidation.

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“…[ 136 ] Thin NiOx films have shown electrochromic properties, with increased water oxidation currents under solar radiation. [ 137 ] A combined TiO2/NiOx photocatalyst has been processed on a WO3 photoelectrode from a single Ti/Ni precursor.…”

Section: Nickel Oxidesmentioning

confidence: 99%

Water Oxidation at Electrodes Modified with Earth‐Abundant Transition‐Metal Catalysts

2014

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Anodic deposition of NiOx water oxidation catalysts from macrocyclic nickel(ii) complexes

Cited by 58 publications

References 36 publications

Earth-abundant metal complexes as catalysts for water oxidation; is it homogeneous or heterogeneous?

Earth-abundant metal complexes as catalysts for water oxidation; is it homogeneous or heterogeneous?

Heat treatment of electrodeposited NiO films for improved catalytic water oxidation

Water Oxidation at Electrodes Modified with Earth‐Abundant Transition‐Metal Catalysts

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