TY - JOUR
T1 - Three-dimensional ordered FeTe-SmCoO3 nanocomposite
T2 - As efficient electrocatalyst for water oxidation
AU - Munawar, Tauseef
AU - Bashir, Ambreen
AU - El-Bahy, Salah M.
AU - Yan, Chang-Feng
AU - Khalid, Awais
AU - El-Bahy, Zeinhom M.
AU - Riaz, Nagina Naveed
AU - Mukhtar, Faisal
AU - Manzoor, Sumaira
AU - Khan, Shoukat Alim
AU - Koc, Muammer
AU - Iqbal, Faisal
N1 - Publisher Copyright:
© 2024 Elsevier B.V.
PY - 2024/8/15
Y1 - 2024/8/15
N2 - In this work, FeTe-SmCoO3 is fabricated through a hydrothermal method and then coated on a stainless steel (SS) substrate to enhance the electrocatalytic performance. The crystal structure, surface chemical state, and morphological features of pure (FeTe and SmCoO3) and heterogeneous catalysts (FeTe-SmCoO3) are determined via XRD, XPS, and TEM/EDX techniques. The fabricated FeTe-SmCoO3 electrocatalyst is attributed to the particular morphological design resulting from the synergistic effect of FeTe and SmCoO3 phases. The asdeveloped high exposure level of active sites with structural transformation greatly promoted the oxidation property with an overpotential only of 199 mV to derive a current density of 10 mA/cm2, also observed a small Tafel slope of 72 mVdec- 1 with extraordinary stability of 90 h. The modified heterogeneous catalyst provides outstanding catalytic behavior toward OER in the alkaline solution, due to flexibility and multiple accessible oxidation states of samarium, cobalt, and iron ions. The catalyst not only acquires additional reaction sites and opens up new channels through the dispersion of the metal centers, but also achieves quick electron transfer in FeTe-SmCoO3 nanocomposite through the interconnection between two phases.
AB - In this work, FeTe-SmCoO3 is fabricated through a hydrothermal method and then coated on a stainless steel (SS) substrate to enhance the electrocatalytic performance. The crystal structure, surface chemical state, and morphological features of pure (FeTe and SmCoO3) and heterogeneous catalysts (FeTe-SmCoO3) are determined via XRD, XPS, and TEM/EDX techniques. The fabricated FeTe-SmCoO3 electrocatalyst is attributed to the particular morphological design resulting from the synergistic effect of FeTe and SmCoO3 phases. The asdeveloped high exposure level of active sites with structural transformation greatly promoted the oxidation property with an overpotential only of 199 mV to derive a current density of 10 mA/cm2, also observed a small Tafel slope of 72 mVdec- 1 with extraordinary stability of 90 h. The modified heterogeneous catalyst provides outstanding catalytic behavior toward OER in the alkaline solution, due to flexibility and multiple accessible oxidation states of samarium, cobalt, and iron ions. The catalyst not only acquires additional reaction sites and opens up new channels through the dispersion of the metal centers, but also achieves quick electron transfer in FeTe-SmCoO3 nanocomposite through the interconnection between two phases.
KW - Electrochemical oxygen evolution
KW - FeTe-SmCoO 3
KW - Heterogeneous electrocatalyst
KW - SS substrate
KW - Transition metal chalcogenide
UR - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=hbku_researchportal&SrcAuth=WosAPI&KeyUT=WOS:001240837800001&DestLinkType=FullRecord&DestApp=WOS_CPL
U2 - 10.1016/j.jallcom.2024.174747
DO - 10.1016/j.jallcom.2024.174747
M3 - Article
SN - 0925-8388
VL - 995
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
M1 - 174747
ER -