首页|Boosting the performance of LaCoO_3/MoS_2 perovskite interface for sustainable decontaminants under visible light-driven photocatalysis

Boosting the performance of LaCoO_3/MoS_2 perovskite interface for sustainable decontaminants under visible light-driven photocatalysis

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The novel composite LaCoO_3/MoS_2 hybrid nanostructure was synthesized via a combination of sol-gel, hydrothermal,and ultrasonication methods. Alizarin Red S (ARS) and Rhodamine B (RhB) were employed as a modelpollutant, to assess the photodegradation efficiency of synthesized catalysts. The effect of MoS_2 (2.5%, 5%, 7.5%,and 10%) on LaCoO_3 (LCO) and its photocatalytic performance was studied. The properties of synthesizedcatalysts were assessed using various material characterization techniques. The photocatalytic dye degradationof ARS and RhB was investigated under visible light. Among the synthesized catalyst LM-5% composite (LaCoO_3with 5% MoS_2) is determined to be the best photocatalyst as it degrades 96 % (ARS) and 90 % (RhB) in 40 minand 80 min, respectively. The photocatalyst is stable even after multiple runs and exhibits negligible loss indegradation efficiency during the cyclic test. Trapping experiments reveal the significance of superoxide anionand hydroxyl radicals against the photodegradation of ARS and RhB. The kinetics of photodegradation of ARSand RhB by LM-5% is found to be 5.70 × 10~(-2) and 2.25 × 10~(-2) min~(-1), respectively. Herein, we demonstrated acatalyst possessing excellent photodegradation activity which may ignite the possibilities of using efficientphotocatalysts for environmental remediation.

LaCoO_3/MoS_2Alizarin red S (ARS)Rhodamine B (RhB)Visible lightPhotocatalyst

K. Sathiyamoorthy、A. Silambarasan、M. Navaneethan、S. Harish

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Functional Materials and Energy Device Laboratory, Department of Physics and Nanotechnology, SRM IST, Kattankulathur, Chengalpattu, 603203, India

Department of Chemistry, Vel Tech Rangarajan Dr. Sagunthala R & D Institute of Science and Technology, Chennai, 600062, India

Functional Materials and Energy Device Laboratory, Department of Physics and Nanotechnology, SRM IST, Kattankulathur, Chengalpattu, 603203, India,Nanotechnology Research Centre (NRC), SRM IST, Kattankulathur, Chengalpattu, 603 203, India

2024

10.1016/j.chemosphere.2023.140575

Chemosphere

Chemosphere

ISSN：0045-6535
年,卷(期)：2024.348(Jan.)