Sonocatalytic degradation of rhodamine B in presence of CdS

Abstract

A novel sonocatalyst CdS was prepared by a facile precipitation method, and characterized by X-ray powder diffraction, transmission electron microscopy, UV-vis absorption spectroscopy, and photoluminescence spectroscopy. Comparative sonocatalytic degradation experiments were carried out in different conditions under ultrasonic irradiation and with rhodamine B (RhB) used as the model substrate. Results indicate that CdS is a highly active sonocatalyst. The efficiency of RhB sonodegradation in aqueous solutions within 4 h is up to 70% after the addition of CdS. Abundant •OH during the RhB sonodegradation was detected, which may be responsible for the high sonodegradation rate over CdS under ultrasonic radiation.

Preparation of a silver ferrite-assisted tungsten oxide nanocomposite for efficient sonocatalytic degradation of organic pollutants activated by PMS followed by toxicity evaluation

“…Moreover, the efficiency was compared with related one reported in the literature and the values are depicted in Table S1 (ESI †). 23,26,41,[55][56][57][58][59][60][61][62][63][64][65][66][67] From the table, it is clear that the prepared AFO/WO 3 material shows good efficiency than the most of the materials reported for sonocatalytic degradation application.…”

Sonocatalytic Degradation of Methylene Blue by MoS2-RGO Nanocomposites

“…The sonocatalytic degradation of organic pollutants using traditional sonocatalysts including Mo 2 O 3 , CdS, ZnO@Fe 3 O 4 , MoS 2 , and TiO 2 has been extensively researched in numerous studies [19][20][21][22][23]. Among various sonocatalysts, molybdenum disulfide (MoS 2 ) based materials are widely investigated because of their chemically stable nature, Earth-abundant tunable structure and nontoxicity [24].…”

“…It was observed that sonocatalytic efficiency was improved by an increase in the catalyst concentration from 100 to 200 mg. This is due to more active sites are provided by enhancing the MG-20 dosage, which will come into being the more reactive radicals (-OH) [36]. MG-20 sonocatalytical performance was evaluated at 100 W power with the catalyst dose of 100 mg at different concentrations of MB (Fig.…”

Hollow TiO2–SiO2 Nanospheres for Photocatalytic Degradation of Organic Dyes

“…Organic dyes are one of the major pollutants in wastewater discharged from the food, textile, plastics, and cosmetics industries. , It is estimated that thousands of different dyes and pigments are used in industry, and a huge amount of synthetic dyes is produced annually worldwide. Pollutants emitted by the global textile industry continue to cause incredible harm to the environment, polluting land and rendering it useless and unproductive. − …”