Ni(II) doped FeOOH 2D nanocrystals, synthesized by Successive Ionic Layer Deposition, and their electrocatalytic properties during oxygen evolution reaction upon water splitting in the alkaline medium

Tolstoy, Valeri P.; Kuklo, L. I.; Gulina, L. B.

doi:10.1016/j.jallcom.2019.01.324

Cited by 28 publications

(7 citation statements)

References 40 publications

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“…Mn and F dual-doped Ni(OH)2 91 233 mV @ 20 mA cm -2 56.9 10 h @ 20 mA cm -2 1 M KOH Ni-doped Co(OH)2 92 300 mV @ 10 mA cm -2 47 36 h @ 1.55 V vs RHE 1 M KOH Ni-doped FeOOH 93 239 mV @ 10 mA cm -2 90.4 -1 M KOH Ni0.83Fe0.17(OH)2 94 245 mV @ 10 mA cm -2 61 10 h @ 10 mA cm -2 1 M KOH Se-doped FeOOH 95 348 mV @ 500 mA cm -2 54 100 h @ 100 mA cm -2 1 M KOH W-doped Ni(OH)2 96 237 mV @ 10 mA cm -2 33 -1 M KOH Other oxides Ce-doped NiO-Au 97 244 mV @ 100 mA cm -2 >24 h @ 50 mA cm -2 1 M KOH Co-doped CuO 98 299 mV @ 50 mA cm -2 134 15 h @ 300 mV 1 M KOH Co-MnO2/OV 99 279 mV @ 20 mA cm -2 75 12 h @ 10 mA cm -2 1 M KOH Co-doped ZnO 100 450 mV @ 10 mA cm - portrays augmented OER activity among this series. 78 From the mechanism, superior OER activity is found to be linked with the reduction potential of Mn (IV) cation; and greater reduction potential facilitates improved kinetics by directly driving surface oxidation.…”

Section: Durability Electrolytementioning

confidence: 99%

“…Similarly, FeOOH was also doped with different elements such as Ni, Co, and Se to enhance its OER performance. Tolstoy et al doped Ni 2+ into the lattice of FeOOH nanocrystals, and 25% doping of Ni 2+ is proven to improve the OER activity considerably 93. Zhang et aldoped Co to the FeOOH, and the Co 0.54 Fe 0.46 OOH composition shows superior activity among other doped samples because Co inclusion created more active sites at the edges of three-dimensional hierarchical structures.…”

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confidence: 99%

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Tuning the intrinsic catalytic activities of oxygen-evolution catalysts by doping: a comprehensive review

2021

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Section: Durability Electrolytementioning

confidence: 99%

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confidence: 99%

Tuning the intrinsic catalytic activities of oxygen-evolution catalysts by doping: a comprehensive review

2021

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“…In addition, the intense absorption band at 1360 cm −1 is clearly visible, which corresponds to the vibrations of the C-O bond in the carbonate group. It's associated with the sorption of CO 2 from the air by the developed surface of the samples [34][35][36][37][38][39][40]. The absorption bands of the Zn-O and Fe-O bonds in the wavenumber region of 300-600 cm −1 cannot be identified because of their diffuse shape [36].…”

Section: Fig 3 Results Of Edx Analysis (A) and Sem Micrographs (B-d) Of Samples Zf-lhsmentioning

confidence: 99%

“…Automation of parameters allows to adjust the thickness of the electrocatalyst films, the selection of the composition and morphology. This method can be easily scalable for the synthesis of electrocatalytic materials at a standard temperature with simple hardware and the use of low-cost reagents [32][33][34][35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Layer by layer synthesis of zinc-iron layered hydroxy sulfate for electrocatalytic hydrogen evolution from ethanol in alkali media

Dmitriev¹,

Попков²

2019

Nanosystems: Phys. Chem. Math.

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This paper proposes a method for producing nanocomposite electrocatalytic coatings based on zinc-iron layered hydroxy sulfate Zn 2 Fe 4 (OH) 12 SO 4 • 8H 2 O and iron(III) hydroxide Fe(OH) 3 using the successive ionic layer deposition (SILD) method. The obtained materials were investigated with the methods of SEM and EDX, XRD, FTIR spectroscopy, and also were analyzed their electrocatalytic performance. These compounds are formed on the surface of the substrate in nanosheets shape with an average size of 6-17 nm, which self-organized into coral-like agglomerates. It was shown that by varying the anionic component of the reaction solution -NO 3− , SO 2− 4 or Cl − , effective control of the 2D nanocrystals phase composition is possible. It has been determined that electrocatalytic materials based on Zn 2 Fe 4 (OH) 12 SO 4 •8H 2 O and Fe(OH) 3 are active in the process of hydrogen evolution from alkaline water-alcohol solutions. In result overpotential value of hydrogen evolution reaction at 10 mA cm −2 decreases about ∼ 10%, as well as energy consumption to carry out this process reduces about 8-12%. as shown from the decline of the Tafel slope. The developed materials have high cyclic stability and short non-stationary mode, which allows them to be considered as the base of electrocatalysts for the processes of hydrogen evolution from ethanol in an alkaline medium.

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“…Recently, iron oxide hydroxides have drawn attention for potential application to solar water splitting and oxygen evolution catalysis. , Out of various phases, goethite (GOE, α-FeOOH) has been suggested to have a suitable band gap (2.47 eV) and favorable band positions for the water splitting process based on a computational study . Its effective photocatalytic properties were experimentally verified by the coating of α-FeOOH on Pt for impressive photocurrents in photocatalytic water splitting …”

Section: Introductionmentioning

confidence: 99%

Goethite and Hematite Hybrid Nanosheet-Decorated YZnO NRs for Efficient Solar Water Splitting

et al. 2021

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Hybrid metal-oxide nanostructures have drawn much attention recently because of their ability to overcome the disadvantages of each individual material to achieve high-performance solar water splitting. Using anodic electrochemical deposition, hybrid polycrystalline goethite (α-FeOOH) and hematite (α-Fe2O3) nanosheets (GOE/HM NSs) were successfully synthesized on yttrium-doped ZnO nanorods (YZO NRs). The unique morphology, with GOE/HM NSs wrapped around the length of vertically aligned YZO NRs, is favorable for light harvesting, charge transfer, and charge transportation. The density and the effective surface area of NSs were optimized for achieving a fine balance between light absorption and charge transportation between the photoanode and the electrolyte. The samples showed much improved water splitting efficiency under both UV and visible-light excitation, which represents the synergistic effects of GEO/HM NSs with YZO NRs. UV–vis absorption and incident photon-to-current conversion efficiency measurements demonstrated appropriate band alignment at interfaces, in addition to the reduced band gap energy. Electrochemical impedance spectroscopy measurements showed greatly reduced charge-transfer resistance. The hybrid material achieved an increase in the water splitting ability by a factor of 4.5 from pristine ZnO NRs (0.2 mA cm–2) to GOE/HM NSs-coated YZO NRs (0.92 mA cm–2). This represents a highly competitive strategy for improving the ability of ZnO for water splitting.

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Ni(II) doped FeOOH 2D nanocrystals, synthesized by Successive Ionic Layer Deposition, and their electrocatalytic properties during oxygen evolution reaction upon water splitting in the alkaline medium

Cited by 28 publications

References 40 publications

Tuning the intrinsic catalytic activities of oxygen-evolution catalysts by doping: a comprehensive review

Tuning the intrinsic catalytic activities of oxygen-evolution catalysts by doping: a comprehensive review

Layer by layer synthesis of zinc-iron layered hydroxy sulfate for electrocatalytic hydrogen evolution from ethanol in alkali media

Goethite and Hematite Hybrid Nanosheet-Decorated YZnO NRs for Efficient Solar Water Splitting

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