MOF-derived FeNiCoOX hierarchical hollow nanocages for oxygen evolution reaction

Liu, Ying; Jia, Guangri; Wu, Qiong; Zhang, Dantong; Wu, Jiandong; Yin, Yage; Sai, Shiran; Guo, Ziwang; Cui, Xiaoqiang

doi:10.1016/j.matlet.2021.129564

Cited by 16 publications

(4 citation statements)

References 12 publications

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“…In contrast, the HRTEM image for the sample synthesized through a conventional mixed strategy revealed different crystalline planes with an interplanar spacing of 0.205 and 0.214 nm, which can be ascribed to the (311) planes of Co 3 O 4 and the (111) plane of Ni, respectively, as in Figure d. The complete TEM calculations for both composites and images at various other scales are presented in Figures S12–S19. , …”

Section: Resultsmentioning

confidence: 99%

“…The complete TEM calculations for both composites and images at various other scales are presented in Figures S12−S19. 46,47 The valence state, chemical structure, bonding environment, and elemental composition of all the electrocatalysts were probed by performing X-ray photoelectron spectroscopy (XPS). As shown in Figure 4a, the core-level Ni 2p XPS spectrum revealed the spin−orbit doublet at binding energies of 856 and 874 eV belonging to Ni 2p 3/2 and Ni 2p 1 /d 2 , respectively.…”

Section: Electrodeposition and Physical Characterizations Of Nicofe@n...mentioning

confidence: 99%

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Electronic and Surface Modifications of Ni–Co–Fe Oxides: A Catalyst with Maximum Exposure of Fe Active Sites for Water Electrolysis

Tahir,

Haq,

Rafique Basra

et al. 2023

ACS Appl. Eng. Mater.

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The production of green hydrogen through water electrolysis is a crucial component of sustainable energy systems. One key challenge is the development of cost-effective electrocatalysts with high performance.Here, we report on the fabrication of a multilayered electrode by coating a nickel foam with nickel−cobalt−iron (Ni−Co−Fe) oxide layers (NiCoFe@ NF/SD). The detailed physical and electrochemical characterizations demonstrated that the topmost layer is rich in Fe active sites. The electronic shuffling between the different layers creates an optimal environment for intermediate adsorption−desorption during the oxygen and hydrogen evolution reactions. The NiCoFe@NF/SD electrode exhibits high catalytic performance due to the presence of intrinsically reactive active sites, as well as high structural, chemical, and mechanical durability with a low overpotential of 210 and 166 mV for the oxygen and hydrogen evolution reactions, respectively, to deliver a geometric activity of 20 mA cm −2 . In a two-electrode configuration, NiCoFe@NF/SD as cathode and anode requires a relatively small input voltage of 1.56 V to deliver a current density of 10 mA cm −2 and sustained a current density of 100 mA cm −2 for over 90 h with no noticeable degradation. This work offers a simple approach for the rational design of electrodes to produce green hydrogen through water electrolysis.

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Section: Resultsmentioning

confidence: 99%

Section: Electrodeposition and Physical Characterizations Of Nicofe@n...mentioning

confidence: 99%

Electronic and Surface Modifications of Ni–Co–Fe Oxides: A Catalyst with Maximum Exposure of Fe Active Sites for Water Electrolysis

Tahir,

Haq,

Rafique Basra

et al. 2023

ACS Appl. Eng. Mater.

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“…12,15 These frameworks consist of inorganic metal ions coordinated with multifunctional organic ligands. MOFs can be synthesized via various pathways and reagents, 16,17 allowing for fine-tuning of their properties, including structure, density, and surface area. 7,[18][19][20] As a result, MOFs have found widespread applications.…”

Section: Introductionmentioning

confidence: 99%

An efficient catalytic reduction of nitroarenes over metal‐organic framework‐derived magnetic graphitic carbon nitride nanosheet

Malmir,

Heravi,

Jahani

2023

Applied Organom Chemis

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Metal–organic frameworks (MOFs) have emerged as highly viable and environmentally friendly alternatives to traditional catalysts within the catalytic family. This project delves into the investigation and subsequent reporting of the remarkable catalytic performance exhibited by magnetic Ox‐CN‐Cu‐MOF in the reduction of nitroarenes. The synthesis of magnetic Ox‐CN‐Cu‐MOF was achieved through a streamlined and intricate process, with its structure meticulously identified via various analytical methods including high‐resolution transmision electron microscopy (HRTEM), X‐ray diffraction (XRD), scanning electron microscopy/energy dispersive X‐ray spectroscopy (SEM/EDS), Fourier transform infrared spectroscopy (FTIR), Brunauer–Emmett–Teller (BET), vibrating‐sample magnetometry (VSM) and thermogravimetric (TG) analysis. Of particular significance, the loading of copper (Cu) and its potential leaching were effectively detected through inductively coupled plasma optical emission spectroscopy (ICP‐OES) analysis. The catalytic efficacy of magnetic Ox‐CN‐Cu‐MOF was evaluated during the conversion of nitro compounds o related‐amines utilizing NaBH4 as the reductant. Remarkably, the unique structure and Lewis acidic properties of copper in the metal nodes contributed to the exceptional catalytic behavior exhibited by the magnetic Ox‐CN‐Cu‐MOF catalyst, surpassing that of previously reported catalysts. Furthermore, magnetic Ox‐CN‐Cu‐MOF demonstrated exceptional recyclability, as validated through repetitive continuous usage.

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“…Nevertheless, amorphous nanomaterials possess a large number of defects in the crystal structure and the long-range and short-range order characteristics afford it more exposed active sites, thereby the catalytic performance of OER is improved. [25][26][27][28][29] It can be foreseeable that a multimetallic TMPs with amorphous porous structure is a promising and efficient catalyst for OER.…”

mentioning

confidence: 99%

A Novel Trimetal Phosphide with Amorphous Porous Structure for the Enhanced Electrocatalysis of Oxygen Evolution Reaction

Han

et al. 2021

J. Electrochem. Soc.

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Aimed at overcoming the sluggish kinetics of oxygen evolution reation (OER), a novel trimetal phosphide electrocatalyst (CoCuMo-P) with amorphous porous structure was prepared using bimetallic CoCu-ZIF-derived layered double hydroxide (LDH) as the precursor and further pyrolyzing under the PH3 atmosphere. Studies found that the synegistic effect of trimetals and the introduction of P heteroatoms contributed to the optimization of porous morphology, amorphous properties and tuned electronic configuration of CoCuMo-P, which increased the number of exposed active sites and accelerated the mass/electron transfer rate, thereby enhancing the OER electrocatalytic activity of CoCuMo-P. In addition, the in situ formed (oxy)hydroxides and oxides of CoCuMo generated more defective sites and adsorbed OH in the alkaline electrolyte, which further helped to improve the OER catalytic performance of CoCuMo-P. When the applied current density was 10 mA·cm−2, the overpotential obtained on CoCuMo-P lowered to 309 mV and the Tafel slope as low as 76 mV·dec−1. A 25 h durabilitly was also obtained. The seldomly reported amphorous and porous Cu-containing phosphide enriched the scope of OER electrocatalyst and the underlying reasons for the enhanced OER activity of CoCuMo-P was revealed, which further provided references for the design of novel electrocatalysts.

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MOF-derived FeNiCoOX hierarchical hollow nanocages for oxygen evolution reaction

Cited by 16 publications

References 12 publications

Electronic and Surface Modifications of Ni–Co–Fe Oxides: A Catalyst with Maximum Exposure of Fe Active Sites for Water Electrolysis

Electronic and Surface Modifications of Ni–Co–Fe Oxides: A Catalyst with Maximum Exposure of Fe Active Sites for Water Electrolysis

An efficient catalytic reduction of nitroarenes over metal‐organic framework‐derived magnetic graphitic carbon nitride nanosheet

A Novel Trimetal Phosphide with Amorphous Porous Structure for the Enhanced Electrocatalysis of Oxygen Evolution Reaction

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