MOF-based bimetallic diselenide nanospheres as a bifunctional efficient electrocatalysts for overall water splitting

Hassan, Mehboob; Baig, Mirza Mahmood; Shah, K. H.; Hussain, Aftab M.; Hassan, Syeda Aqsa; Ali, Arshad

doi:10.1016/j.jpcs.2022.110780

Cited by 6 publications

(5 citation statements)

References 49 publications

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“…The CoSe/MoSe 2 hierarchical nanospheres possessed overpotentials of 110 and 240 mV for HER and OER at 10 mA•cm −2 in 1.0 M KOH, respectively. 17 The above results indicate that bimetallic selenides show catalytic activity that is better than that of monometallic selenides. It can be attributed to the synergistic effect between different metallic selenides, which is beneficial to transfer electron, transport mass, and promote electrochemical reaction kinetics.…”

Section: Introductionmentioning

confidence: 80%

“…Hassan et al synthesized CoSe/MoSe 2 hierarchical nanospheres through a simple selenization process. The CoSe/MoSe 2 hierarchical nanospheres possessed overpotentials of 110 and 240 mV for HER and OER at 10 mA·cm –2 in 1.0 M KOH, respectively . The above results indicate that bimetallic selenides show catalytic activity that is better than that of monometallic selenides.…”

Section: Introductionmentioning

confidence: 82%

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Fe-Doped Ni/Co-Based Selenide Hierarchical Nanosheet Arrays as Self-Supporting Bifunctional Electrocatalysts for Overall Water Splitting

Fan,

Ding,

Huang

et al. 2024

ACS Appl. Nano Mater.

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It is necessary to optimize the electrocatalytic activity of an electrocatalyst by means of morphology and composition regulation. Herein, Fe-doped bimetallic selenide hierarchical nanosheet arrays grown on nickel foam (Fe-NiCoSe/NiCoSe/NF) are obtained for overall water splitting. The Fe-NiCoSe/NiCoSe/NF is fabricated by selenizing the NiCoFe Prussian blue analogue (NiCoFe-PBA) growing on a NiCo-layered double hydroxide (NiCo-LDH). Benefiting from the hierarchical nanosheet arrays, the synergistic effect of the bimetallic selenides, as well as the electronic structure rearrangement caused by Fe-doping, the Fe-NiCoSe/NiCoSe/NF catalyst exhibits low overpotentials of 120 mV for hydrogen evolution reaction (HER) and 199 mV for oxygen evolution reaction (OER) at 10 mA·cm–2 in 1.0 M KOH. In addition, when used as a bifunctional electrocatalyst for overall water splitting, the Fe-NiCoSe/NiCoSe/NF requires a cell voltage of 1.93 V (1.82 V) to reach 100 mA·cm–2 (50 mA·cm–2). Additionally, Fe-NiCoSe/NiCoSe/NF exhibits prolonged durability lasting for 150 h at 10 mA·cm–2. This work provides a reasonable idea for designing a hierarchical nanostructured bifunctional electrocatalyst toward overall water splitting by regulating the structure and composition.

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Section: Introductionmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 82%

Fe-Doped Ni/Co-Based Selenide Hierarchical Nanosheet Arrays as Self-Supporting Bifunctional Electrocatalysts for Overall Water Splitting

Fan,

Ding,

Huang

et al. 2024

ACS Appl. Nano Mater.

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“…Even though some other designed molecules, including the selected violet-blue to blue derivates like 1b, 1f, 1g, and 1h, possess a lower 3 LE state, the effective TADF is made feasible via reversible internal conversion from 3 LE to 3 CT state followed by a subsequent RISC from 3 CT to 1 CT state. So, by enhancing the electron-withdrawing capacity of A, it is beneficial to raise the 3 LE state and lower the ΔE ST (Hussain et al, 2019;Hassan et al, 2022;Hussain et al, 2023).…”

Section: Figurementioning

confidence: 99%

Exploration of violet-to-blue thermally activated delayed fluorescence emitters based on “CH/N” and “H/CN” substitutions at diphenylsulphone acceptor. A DFT study

Hussain,

Irfan,

Kanwal

et al. 2023

Front. Chem.

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The violet-to-blue thermally activated delayed fluorescence (TADF) emitters were created employing several substituents based on 5,5-dimethyl-5,10-dihydropyrido [2,3-b][1,8] naphthyridine-diphenylsulphone (DMDHPN-DPS) called 1a via “CH/N” and “H/CN” substitutions at the diphenylsulphone acceptor (DPS) moiety. The parent compound 1a was selected from our former work after extensive research employing “CH/N” substitution on Dimethyl-acridine (DMAC) donor moiety. There is a little overlap amid the highest occupied molecular orbitals (HOMOs) and lowest un-occupied molecular orbitals (LUMOs) due to the distribution of HOMOs and LUMOs primarily on the DMDHPN donor and the DPS acceptor moieties, respectively. It resulted in a narrower energy gap (∆EST) between the lowest singlet (S1) and triplet (T1) excited state. In nearly all derivatives, the steric hindrance results in a larger torsional angle (85°–98°) between the plane of the DMDHPN and the DPS moieties. The predicted ΔEST values of the compounds with “H/CN” substitution were lower than those of the comparable “CH/N” substituents, demonstrating the superiority of the reversible inter-system crossing (RISC) from the T1 → S1 state. All derivatives have emission wavelengths (λem) in the range of 357–449 nm. The LUMO → HOMO transition energies in the S1 states are lowered by the presence of –CN groups or –N = atoms at the ortho or meta sites of a DPS acceptor unit, causing the λem values to red-shift. Furthermore, the λem showed a greater red-shift as there were more–CN groups or –N = atoms. Three of the derivatives named 1b, 1g, and 1h, emit violet (394 nm, 399 nm, and 398 nm, respectively), while two others, 1f and 1i, emit blue shade (449 nm each) with reasonable emission intensity peak demonstrating that these derivatives are effective violet-to-blue TADF nominees. The lower ΔEST value for derivative 1i (0.01 eV) with λem values of 449 nm make this molecule the finest choice for blue TADF emitter amongst all the studied derivatives. We believe our research might lead to the development of more proficient blue TADF-OLEDs in the future.

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“…Therefore, it is vital to design catalysts with high activity, low cost, and long-term stability to find a suitable replacement for the catalysts that are based on precious metals. 36–38…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it is vital to design catalysts with high activity, low cost, and long-term stability to nd a suitable replacement for the catalysts that are based on precious metals. [36][37][38] Metal-organic frameworks, oen known as MOFs, are a newly discovered family of materials that, despite their great porosity, exhibit exceptional crystallinity and long-range organization. 39 MOFs are constructed from organic ligands and metal ions (or clusters), which serve as the basic elements.…”

Section: Introductionmentioning

confidence: 99%

An inclusive review and perspective on Cu-based materials for electrochemical water splitting

Khosa

Sohail

2023

RSC Adv.

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MOF-based bimetallic diselenide nanospheres as a bifunctional efficient electrocatalysts for overall water splitting

Cited by 6 publications

References 49 publications

Fe-Doped Ni/Co-Based Selenide Hierarchical Nanosheet Arrays as Self-Supporting Bifunctional Electrocatalysts for Overall Water Splitting

Fe-Doped Ni/Co-Based Selenide Hierarchical Nanosheet Arrays as Self-Supporting Bifunctional Electrocatalysts for Overall Water Splitting

Exploration of violet-to-blue thermally activated delayed fluorescence emitters based on “CH/N” and “H/CN” substitutions at diphenylsulphone acceptor. A DFT study

An inclusive review and perspective on Cu-based materials for electrochemical water splitting

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