4.6 Article

Facile synthesis of novel SWCNT/HgS nanohybrid: An effective photocatalyst for degradation of methylene blue

Journal

MATERIALS LETTERS
Volume 250, Issue -, Pages 5-8

Publisher

ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2019.04.090

Keywords

Carbon nanotubes; Nanocomposites; HgS nanoparticles; Hydrothermal synthesis; Photocatalysis

Funding

  1. DST-SERB, Government of India [SB/FT/CS-136/2014]

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Mercury sulphide (HgS) nanoparticles decorated single walled carbon nanotubes (SWCNT/HgS) were synthesized via a hydrothermal route. We investigated structural and photocatalytic properties of SWCNT/HgS nanohybrid. The diameter of pure SWCNTs and SWCNT/HgS as determined by Raman spectroscopy was 1.607 nm and 1.646 nm, respectively. Hexagonal phase of alpha-HgS nanoparticles decorated on SWCNTs was evidenced in HRTEM, SAED, XPS and XRD spectra. An increase in photocatalytic efficiency of SWCNT/HgS nanohybrid (99.08%) as compared to HgS NPs (73.0%) was observed for photodegradation of methylene blue (5 ppm) under sunlight. This study suggests a promising approach to rational design of advanced heterogeneous photocatalysts for environmental remediation. (C) 2019 Elsevier B.V. All rights reserved.

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