Synthesis and characterization of various transition metals doped SnO2@MoS2 composites for supercapacitor and photocatalytic applications

被引：115

作者：

Asaithambi, S. ^{[1
]}

Sakthivel, P. ^{[1
]}

Karuppaiah, M. ^{[1
]}

Balamurugan, K. ^{[1
]}

Yuvakkumar, R. ^{[1
]}

Thambidurai, M. ^{[2
]}

Ravi, G. ^{[1
]}

机构：

[1] Alagappa Univ, Dept Phys, Karaikkudi 630003, Tamil Nadu, India

[2] Nanyang Technol Univ, Ctr Opto Elect & Biophoton COEB, Sch Elect & Elect Engn, Photon Inst TPI, 50 Nanyang Ave, Singapore 639798, Singapore

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2021年 / 853卷

关键词：

SnO2@MoS2; Supercapacitor; Photocatalytic; Methylene blue; ELECTROCHEMICAL PROPERTIES; SPHERICAL NANOSTRUCTURES; HYDROTHERMAL SYNTHESIS; SNO2; NANOPARTICLES; THIN-FILMS; GAS SENSOR; MOS2; DEGRADATION; PERFORMANCE; HETEROJUNCTION;

D O I：

10.1016/j.jallcom.2020.157060

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this article, we synthesize the bifunctional materials of various transition metals (TM) (Co, Ni and Mn) doped SnO2@MoS2 composites for enhanced energy storage and improved photocatalytic activity for removing organic pollutants. Herein, we use a facile hydrothermal method for sample synthesis and the physico chemical properties of the synthesized samples were investigated in detail using various analytical tools. The energy dispersive X-ray spectra and elemental mapping confirmed the presence of species in the synthesized samples. X-ray photoelectron spectroscopy analysis revealed the corresponding energy state of various TM doped SnO2@MoS2 samples. The Mn doped SnO2@MoS2 composite exhibited a higher specific capacitance of 242 F/g at a current density 0.5 A/g. The capacitance retention of 83.95% was observed after 5000 continuous charge/discharge cycles. Further, the Mn doped SnO2@MoS2 composite had higher degradation efficiency (97%) compared to all other samples using methylene blue as an organic dye under visible light irradiation. Henceforth, this study demonstrates the optimum concentration of Mn doped SnO2@MoS2 composite is the outstanding bifunctional materials for supercapacitor and photocatalytic applications. (c) 2020 Elsevier B.V. All rights reserved.

引用

页数：16

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