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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.
Afiliación
  • Munawar T; Institute of Physics, The Islamia University of Bahawalpur, 63100, Pakistan. faisal.iqbal@iub.edu.pk.
  • Fatima S; Institute of Physics, The Islamia University of Bahawalpur, 63100, Pakistan. faisal.iqbal@iub.edu.pk.
  • Batoo KM; College of Science, King Saud University, P.O. Box-2455, Riyadh-11451, Saudi Arabia.
  • Bashir A; Institute of Physics, The Islamia University of Bahawalpur, 63100, Pakistan. faisal.iqbal@iub.edu.pk.
  • Mukhtar F; Institute of Physics, The Islamia University of Bahawalpur, 63100, Pakistan. faisal.iqbal@iub.edu.pk.
  • Hussain S; Hybrid Materials Center (HMC), Sejong University, Seoul-05006, Republic of Korea.
  • Manzoor S; Department of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul-05006, Republic of Korea.
  • Ashiq MN; Institute of Chemical Sciences, Bahauddin Zakariya University, Multan 60800, Pakistan.
  • Khan SA; Institute of Chemical Sciences, Bahauddin Zakariya University, Multan 60800, Pakistan.
  • Koc M; Division of Sustainable Development, College of Science and Engineering, Hamad Bin Khalifa University, Qatar Foundation, Doha, Qatar.
  • Iqbal F; Division of Sustainable Development, College of Science and Engineering, Hamad Bin Khalifa University, Qatar Foundation, Doha, Qatar.
Phys Chem Chem Phys ; 26(3): 2678-2691, 2024 Jan 17.
Article en En | MEDLINE | ID: mdl-38175550
ABSTRACT
The availability of hydrogen energy from water splitting through the electrocatalytic route is strongly dependent on the efficiency, durability, and cost of the electrocatalysts. Herein, a novel Bi2S3-covered Sm2O3 (Bi2S3-Sm2O3) nanocomposite electrocatalyst was developed by a hydrothermal route for the oxygen evolution reaction (OER). The electrochemical properties were studied in 1.00 mol KOH solution after coating the target material on the stainless-steel substrate (SS). Physical analysis via XRD, FTIR, IV, TEM/EDX, and XPS revealed that the Bi2S3-Sm2O3 composite possesses metallic surface states, thereby displaying unconventional electron dynamics and purity of phases. The Bi2S3-Sm2O3 composite shows outstanding OER activity with a low overpotential of 197 mV and a Tafel slope of 74 mV dec-1 at a 10 mA cm-2 current density as compared to pure Bi2S3 and Sm2O3. Meanwhile, the composite catalyst retains high stability even after 100 h of the chronoamperometry test. Thus, this work unveils a new avenue for the speedy flow of electrons, which is attributed to the synergetic effect between Bi2S3 and Sm2O3, as well as enriched interfacial defects, which exhibit greater oxygen adsorption capability with improved electronic assemblies in the active interfacial region. In addition, the introduced porous structure in core-shell Bi2S3-Sm2O3 provides extraordinary electrical properties. Thus, this article offers a realistic framework for electrochemical energy generation.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Chem Chem Phys Asunto de la revista: BIOFISICA / QUIMICA Año: 2024 Tipo del documento: Article País de afiliación: Pakistán Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Chem Chem Phys Asunto de la revista: BIOFISICA / QUIMICA Año: 2024 Tipo del documento: Article País de afiliación: Pakistán Pais de publicación: Reino Unido