Nanotechnology's aptitude to silhouette matter at the scale of the nanometer has unlocked the flap to new inventions of applications in material science and nanomedicine. Engineered silica nanoparticles are key actor of this strategy. The amphitheatre of silica nanoparticles is inexplicably bilateral. Silica particles play essential function in everyday commercial purposes for instance energy storage, chemical and biological sensors, food processing and catalysis. One of the most appealing applications to emerge in the recent years is the use of silica particles for cleaning up contaminants in groundwater, soil and sediments. Herein this work, surfactant modified silica nanoparticles with unique surface and pore properties as well as high surface areas have been extensively investigated as an alternative for the dye removal. The physical and chemical characterizations of adsorbent have been studied using FTIR and scanning electron microscopy. The present investigation aims to explore the comparative effect of different surfactants during the formation of the target composite materials. The effects of various parameters like pH, adsorbent doses, dye concentration, addition of salt have also been investigated. These findings indicate that the nano silica particles are effective materials for dye removal and can be used to alleviate environmental problems.
The dye removal efficiency of Silica nanoparticles prepared by simple and facile method has been carried out in this work. The comparative role of surface functionalization over Silica nanoparticles has also been studied in details. The adsorption measurements with varied initial pH value, absorption dosage, and dye concentration were also conducted for optimizing the system. The obtained adsorption data were assessed by using various isotherm models. The mechanism of dye adsorption is also been discussed. The detailed understanding of surfactant-nanoparticle, surfactant-dye and nanoparticle-dye interactions will further contributes to the overall affinity of pollutants in these functionalized media, which will further support various associated phenomena such as adhesion, heterogeneous catalysis etc. This method involves the surface functionality of surfactants over nanoparticles and the easier and safe management of major environmental issues.
The Covid-19 has changed the life of the entire world and its wave has affected all elds of medicine and dentistry. The concern about coronavirus transmission and dental practice has been widely recognized around the world.The purpose of this survey was to investigate the inuence of coronavirus disease on patients' views with regards to their dental treatment requirements. Materials and methods: It is a cross-sectional survey conducted over 430 patients seeking dental treatment in Ramaiah dental college and hospital Bangalore, Karnataka, India. This survey has been conducted through electronic communication applications such as WhatsApp and Gmail, for three months. A structured and validated questionnaire was administered to the study subjects. Collected data were analyzed by using descriptive statistics. Results:Atotal of 1000 patients were selected for the survey, in this only 43% of subjects completed the survey. Out of 430 responses, 50.1% of the subjects had dental problems. 38.3% of subjects expressed the unavailability of dental clinics and hospitals during Covid-19, 31.4% unavailability of the dentist. Of the 42.9% of patients who visited the dental clinic during the covid-19 pandemic, 38% of subjects observed the increase in treatment cost, only 30.5% of subjects were provided with emergency treatment. The majority of subjects (75.7%) expressed that dentists are practicing good precautionary measures such as wearing PPE kits, mouth masks etc. Conclusion: During the coronavirus pandemic, the patients demonstrated good knowledge and an optimistic attitude towards the precautionary modications in regard to minimize the spread of COVID-19 in the dental setting.
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