Synergistic effect of a bamboo-like Bi2S3 covered Sm2O3 nanocomposite (Bi2S3–Sm2O3) for enhanced alkaline OER

Munawar, Tauseef; Fatima, Saman; Batoo, Khalid Mujasam; Bashir, Ambreen; Mukhtar, Faisal; Hussain, Sajjad; Manzoor, Sumaira; Ashiq, Muhammad Naeem; Khan, Shoukat Alim; Koc, Muammer; Iqbal, Faisal

doi:10.1039/d3cp05158g

Phys. Chem. Chem. Phys.

2024

DOI: 10.1039/d3cp05158g

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Synergistic effect of a bamboo-like Bi₂S₃ covered Sm₂O₃ nanocomposite (Bi₂S₃–Sm₂O₃) for enhanced alkaline OER

Tauseef Munawar,

Saman Fatima,

Khalid Mujasam Batoo

et al.

Abstract: Efficient and durable electrocatalyst for OER.

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Cited by 6 publications

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A Core/Shell Bi₂S₃/BiVO₄ Nanoarchitecture for Efficient Photoelectrochemical Water Oxidation

Xiong,

Zhang,

Zhao

et al. 2024

ChemSusChem

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The construction of nanostructured heterostructure is a potent strategy for achieving high‐performance photoelectrochemical (PEC) water splitting. Among these, constructing BiVO4‐based heterostructure stands out as a promising method for optimizing light‐harvesting efficiency and reducing severe charge recombination. Herein, we present a novel approach to fabricate a type II heterostructure of core/shell Bi2S3/BiVO4 using electrolytic deposition and successive ionic layer adsorption and reaction (SILAR) methods. We identify the type II heterostructure and the difference in fermi energy using UV‐Vis spectroscopy, X‐ray photoelectron spectroscopy, and PEC measurements. This redistribution of charges due to the fermi energy difference induces an interfacial built‐in electric field from BiVO4 to Bi2S3, reinforcing the photogenerated hole transfer kinetics from BiVO4 to Bi2S3. The Bi2S3/BiVO4 heterostructure exhibits a superior photocurrent (6.0 mA cm−2), enhanced charge separation efficiency (85%), and higher open‐circuit photovoltage (350 mV). Additionally, the heterostructure displays a prolonged average lifetime of charge (1.63 ns), verifying this heterojunction could boost interfacial carriers’ migration via an additional nonradiative quenching pathway. Furthermore, the lower photoluminescence (PL) intensity demonstrates the interfacial built‐in electric field is beneficial for boosting charge migration.

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A Core/Shell Bi₂S₃/BiVO₄ Nanoarchitecture for Efficient Photoelectrochemical Water Oxidation

Xiong,

Zhang,

Zhao

et al. 2024

ChemSusChem

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Tailoring Spinel with Perovskite: Sr Substitution in the Perovskite Phase of CoFe₂O₄–LaCoO₃ Nanocomposite for Oxygen Evolution and Methanol Oxidation in Alkaline Medium

Parihar,

Mishra,

Yadav

et al. 2024

Energy Tech

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CoFe2O4–La1−xSrxCoO3 (x = 0.2, 0.6, 0.8) composites have been synthesized using a two‐step, low‐temperature wet chemical approach that combines coprecipitation and sol–gel techniques. The composite materials have been physicochemically analyzed using Fourier‐transform infrared spectroscopy, X‐ray diffraction, and scanning electron microscope. The electrocatalytic properties of the composite materials have been assessed in terms of their performance in oxygen evolution reaction (OER) and methanol oxidation reaction (MOR) in alkaline medium. Cyclic voltammetry has been used for analyzing the redox behavior of the materials in 1 M KOH solution. The electrocatalytic activity of the materials has been assessed using anodic polarization curves on Ni substrate and the CoFe2O4–La0.2Sr0.8CoO3 film electrode demonstrates excellent activity, with current densities of 11.1 mA cm−2 for OER and 47.4 mA cm−2 for MOR at 650 mV. Also, the CoFe2O4–La0.2Sr0.8CoO3 film electrode has the maximum specific activity of 1.1 × 103 mA cm−2 g−1 at 650 mV toward OER. The electrodes’ stability has been assessed through chronoamperometric experiments and additional insight into the enhancement of electrocatalytic activity gained through the electrochemical surface area estimations using electrochemical impedance spectroscopy. From chronoamperometric experiment, it has been observed that the CoFe2O4–La0.2Sr0.8CoO3 film electrode attains stability within 114 s with a current density of 108.7 mA cm−2. Furthermore, the thermodynamic parameters, including the standard enthalpy of activation (ΔH°#), standard entropy of activation (ΔS°#), and standard electrochemical energy of activation (), have been estimated by anodic polarization curve recorded in KOH as well as KOH with CH3OH solutions at various temperatures.

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Enhanced degradation of crystal violet dye under solar light by zirconium phosphate-decorated graphitic carbon nitride

Gupta,

Ben,

Chandra

2024

Res Chem Intermed

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Synergistic effect of a bamboo-like Bi₂S₃ covered Sm₂O₃ nanocomposite (Bi₂S₃–Sm₂O₃) for enhanced alkaline OER

Abstract: Efficient and durable electrocatalyst for OER.

Cited by 6 publications

References 71 publications

A Core/Shell Bi₂S₃/BiVO₄ Nanoarchitecture for Efficient Photoelectrochemical Water Oxidation

A Core/Shell Bi₂S₃/BiVO₄ Nanoarchitecture for Efficient Photoelectrochemical Water Oxidation

Tailoring Spinel with Perovskite: Sr Substitution in the Perovskite Phase of CoFe₂O₄–LaCoO₃ Nanocomposite for Oxygen Evolution and Methanol Oxidation in Alkaline Medium

Enhanced degradation of crystal violet dye under solar light by zirconium phosphate-decorated graphitic carbon nitride

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Synergistic effect of a bamboo-like Bi2S3 covered Sm2O3 nanocomposite (Bi2S3–Sm2O3) for enhanced alkaline OER

Abstract: Efficient and durable electrocatalyst for OER.

Cited by 6 publications

References 71 publications

A Core/Shell Bi2S3/BiVO4 Nanoarchitecture for Efficient Photoelectrochemical Water Oxidation

A Core/Shell Bi2S3/BiVO4 Nanoarchitecture for Efficient Photoelectrochemical Water Oxidation

Tailoring Spinel with Perovskite: Sr Substitution in the Perovskite Phase of CoFe2O4–LaCoO3 Nanocomposite for Oxygen Evolution and Methanol Oxidation in Alkaline Medium

Enhanced degradation of crystal violet dye under solar light by zirconium phosphate-decorated graphitic carbon nitride

Contact Info

Product

Resources

About

Synergistic effect of a bamboo-like Bi₂S₃ covered Sm₂O₃ nanocomposite (Bi₂S₃–Sm₂O₃) for enhanced alkaline OER

A Core/Shell Bi₂S₃/BiVO₄ Nanoarchitecture for Efficient Photoelectrochemical Water Oxidation

A Core/Shell Bi₂S₃/BiVO₄ Nanoarchitecture for Efficient Photoelectrochemical Water Oxidation

Tailoring Spinel with Perovskite: Sr Substitution in the Perovskite Phase of CoFe₂O₄–LaCoO₃ Nanocomposite for Oxygen Evolution and Methanol Oxidation in Alkaline Medium