Microwave-Hydrothermal Synthesis of SnO2-CNTs Hybrid Nanocomposites with Visible Light Photocatalytic Activity

Abstract

SnO2 nanoparticles coated on carbon nanotubes (CNTs) were prepared via a simple microwave-hydrothermal route. The as-obtained SnO2-CNTs composites were characterized using X-ray powder diffraction, Raman spectroscopy, and transmission electron microscopy. The photocatalytic activity of as-prepared SnO2-CNTs for degradation of Rhodamine B under visible light irradiation was investigated. The results show that SnO2-CNTs nanocomposites have a higher photocatalytic activity than pure SnO2 due to the rapid transferring of electrons and the effective separation of holes and electrons on SnO2-CNTs.

Thermal Calcination-Based Production of SnO2 Nanopowder: An Analysis of SnO2 Nanoparticle Characteristics and Antibacterial Activities

“…SnO 2 nanostructure preparation can be achieved using several different techniques. These include the co-precipitation [ 26 ], sol-gel [ 28 , 29 ], solvothermal decomposition [ 30 , 31 ], microwave hydrothermal synthesis [ 32 , 33 ] and precipitation [ 34 ], techniques, as well as hydrothermal synthesis [ 35 , 36 ], and the polyol [ 37 ], solvothermal [ 38 ], and by microwave [ 39 , 40 , 41 ] methods. However, issues related to the complexity of the synthetic process, including the creation of effluent by-product, reagent toxicity, and longer reaction times, have made industrial SnO 2 nanopowder generation difficult to achieve, with the creation of a pure powder product having been entirely unachievable through the aforementioned techniques [ 42 ].…”

Intense pulsed light-based synthesis of hybrid TiO2–SnO2/MWCNT doped Cu-BTC for room temperature ammonia sensing

“…Illumination of SnO 2 /MWCNTs composites by visible light, such as IPL, causes the formation of highly reactive radicals including hydroxyl and oxygen. 39 The radicals catalyze ammonia adsorption reactions, and the loss of radicals may explain the upwards drift in resonance frequency corresponding to a loss of mass. The motional resistance changes upon increasing the ammonia concentration are negligible for both TiO 2 /MWCNTs@Cu-BTC film-grown QCM and SnO 2 /MWCNTs@Cu-BTC film-grown QCM as shown in Figure 4(a) and 4(b), respectively.…”

UV-Vis Activated Cu2O/SnO2/WO3 Heterostructure for Photocatalytic Removal of Pesticides

“…Under irradiation, the catalysts generate oxidative and superoxidative species that promote a complex series of oxidation reactions, aiming to induce the complete mineralization of the organic pollutants [ 16 ]. Monocomponent catalysts, such as TiO 2 [ 17 ], CuO [ 18 ], SnO 2 [ 19 ], WO 3 [ 20 ], ZnO [ 21 ], and Cu 2 S [ 22 ], exhibit a series of disadvantages, such as limited light absorption, low chemical stability, and fast charge carrier recombination. In order to overcome these issues, heterostructures and composite materials have been developed.…”