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New high-entropy transition-metal sulfide nanoparticles for electrochemical oxygen evolution reaction
, Article Electrochimica Acta ; 2022 , Volume 436 ; 00134686 (ISSN) ; Hasanvandian, F ; Bahadoran, A ; Shokri, A ; Zerangnasrabad, S ; Kakavandi, B ; Sharif University of Technology
Elsevier Ltd
2022
Abstract
Developing extremely efficient electrocatalysts for oxygen evolution reactions (OER) is a decisive step toward the progression of rechargeable metal-oxygen batteries, CO2 reduction, and water-splitting. Nanoporous high-entropy transition-metal sulfides (np-HETMS) represent a new generation of promising OER catalysts by virtue of their exceptional catalytic activity. However, their synthesis maintains to be a challenge by reason of the thermodynamic immiscibility of the constituting multi-principal metallic elements in the sulfide structure. Herein, for the first time, the np-HETMS ((CoFeNiMnCu)S2) nanoparticles with pyrite-phase was synthesized via a facile and easy adaptable...
CuO and ZnO co-anchored on g-C3N4 nanosheets as an affordable double Z-scheme nanocomposite for photocatalytic decontamination of amoxicillin
, Article Applied Catalysis B: Environmental ; Volume 285 , 2021 ; 09263373 (ISSN) ; Hasanvandian, F ; Isari, A. A ; Hayati, F ; Kakavandi, B ; Setayesh, S. R ; Sharif University of Technology
Elsevier B.V
2021
Abstract
In this study, both CuO nanoparticles and ZnO nanorods were anchored on thermally-exfoliated g-C3N4 nanosheets (denoted as CZ@T-GCN) via isoelectric point-mediated annealing process as a novel nano-photocatalyst towards degradation of amoxicillin (AMOX). The features of prepared materials were characterized using BET, UV–vis DRS, XRD, FT-IR, XPS, FE-SEM, TEM, EIS and transient photocurrent techniques. These analyses demonstrated the successful formation of heterojunctions between components of CZ@T-GCN nanocomposite, which reflected in significantly increased electron-hole separation and enhanced degradation of AMOX as compared with pure substances. The investigation of influential operative...