Improved performance of SnS/MWCNT heterostructures for photocatalytic, energy generation and supercapacitors applications.

Semiconductor/graphene allotropes have shown remarkable performance in energy applications in recent years. Efficient visible-light-performance SnS/MWCNT photocatalytic heterostructured nanomaterials were prepared using a simple ultrasonic technique. A tetragonal MWCNT crystal structure and an orthorhombic SnS crystal structure were identified in the composite material through structural research. The uniformly distributed 5 nm SnS nanoparticles on the MWCNT nanosheet surface were visible in TEM images.The addition of SnS nanoparticles to MWCNT resulted in improved visible-light absorption, as proven by UV-vis absorption spectroscopy tests, highlighting its technological significance. The composites produced greater supercapacitance of 1611.89 F/g, 1523.89 F/g, and 1453.2 F/g for 0.5 A/g current density for various concentrations of MWCNT, according to electrochemical measurements. The higher efficiency of 13.1% was evident in photovoltaic experiments using the nanocomposite.It also exhibited an excellent photodegradation efficiency of about 90%. It was found that the nanocomposite's efficiency was greater than that of pure SnS and MWCNT.