Implication of nanotechnology to reduce the environmental risks of waste associated with the COVID-19 pandemic

El-Sayyad, Gharieb S.; Elfadil, Dounia; Gaballah, Mohamed S.; El‐Sherif, Dina M.; Abouzid, Mohamed; Nada, Hanady G.; Khalil, Mohamed S.; Ghorab, Mohamed A.

doi:10.1039/d3ra01052j

Cited by 8 publications

(4 citation statements)

References 89 publications

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“…Importantly, the encouraging properties of the synthesized CdS-Co x Ni 1-x Fe 2 O 4 /SiO 2 /TiO 2 NPs play a vital role in their antimicrobial characteristics; elemental structure, the purity, and size for the synthesized nanocomposites should be analyzed to explain their antimicrobial pursuits [ 61 ]. There is significance within the properties of the prepared CdS-Co x Ni 1-x Fe 2 O 4 /SiO 2 /TiO 2 NPs and the outstanding antimicrobial performance.…”

Section: Resultsmentioning

confidence: 99%

Potential antibacterial, antibiofilm, and photocatalytic performance of gamma-irradiated novel nanocomposite for enhanced disinfection applications with an investigated reaction mechanism

El-Sayyad,

Abd Elkodous,

El-Bastawisy

et al. 2023

BMC Microbiol

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Background Water scarcity is now a global challenge due to the population growth and the limited amount of available potable water. In addition, modern industrialization, and microbial pathogenesis is resulting in water pollution on a large scale. Methods In the present study, reusable Co0.5Ni0.5Fe2O4/SiO2/TiO2 composite matrix was incorporated with CdS NPs to develop an efficient photocatalyst, and antimicrobial agents for wastewater treatment, and disinfection purpose. The antibacterial performance of the gamma-irradiated samples was evaluated against various types of Gram-positive bacteria using ZOI, MIC, antibiofilm, and effect of UV-exposure. Antibacterial reaction mechanism was assessed by bacterial membrane leakage assay, and SEM imaging. In addition, their photocatalytic efficiency was tested against MB cationic dye as a typical water organic pollutant. Results Our results showed that, the formed CdS NPs were uniformly distributed onto the surface of the nanocomposite matrix. While, the resulted CdS-based nanocomposite possessed an average particle size of nearly 90.6 nm. The antibacterial performance of the prepared nanocomposite was significantly increased after activation with gamma and UV irradiations. The improved antibacterial performance was mainly due to the synergistic effect of both TiO2 and CdS NPs; whereas, the highest photocatalytic efficiency of MB removal was exhibited in alkaline media due to the electrostatic attraction between the cationic MB and the negatively-charged samples. In addition, the constructed heterojunction enabled better charge separation and increased the lifetime of the photogenerated charge carriers. Conclusion Our results can pave the way towards the development of efficient photocatalysts for wastewater treatment and promising antibacterial agents for disinfection applications.

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Section: Resultsmentioning

confidence: 99%

Potential antibacterial, antibiofilm, and photocatalytic performance of gamma-irradiated novel nanocomposite for enhanced disinfection applications with an investigated reaction mechanism

El-Sayyad,

Abd Elkodous,

El-Bastawisy

et al. 2023

BMC Microbiol

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“…Nanoparticles can also be used to develop waste management and recycling systems that are more efficient and costeffective. Additionally, nanoparticles can be used to develop environmental monitoring systems that detect pollutants in the environment and provide real-time data [116]. Nanomaterials with specific properties can capture and degrade pollutants, including heavy metals, organic contaminants, and harmful gases.…”

Section: Environmental Impactmentioning

confidence: 99%

Application of Nanotechnology in Agroecosystems: Nanoparticles for Improving Agricultural Production

Bratovcic,

Hikal,

Mehdizadeh

et al. 2023

RAS

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Growing populations and less space and water for farming make it harder to produce enough food. This forces people to come up with new, cleaner ways to increase crop yields. There are considerable concerns about food safety and quality globally as a sustainable food supply becomes more critical. Increasing the application of agrochemicals and synthetic fertilizers results in losing soil biodiversity and developing pesticide-resistant pathogens. As a result, using advanced technologies to monitor agricultural production is crucial to improving crop yields. Over the past few years, nanotechnology has opened up various possibilities for crop yield improvement and efficient food processing. Nanofibers, nanosensors, nanofertilizers, nanoherbicides and nanofungicides are examples of nanotechnology options for agricultural production systems. As nanoparticles possess specific chemical and structural characteristics, they are capable of transferring nutrients to plants, synthesizing nanopesticides and nanofungicides, and making nanosensors for detecting pesticide deficiencies. Nanotechnology applications still need to be developed. Designed to release precisely and slowly, agrochemical compounds are encapsulated in nanoparticles. This review aims to address modern agriculture's challenges related to nanotechnology, in order to develop more efficient and sustainable food production systems, and its novelty lies in evaluating nanotechnology's effectiveness by examining smart sensors, nanofertilizers for soil improvement and crop yield, controlled release of agrochemicals, improved nutrient delivery, and disease and pest management.

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“…SARS is an airborne viral infection that spreads through mild droplets of saliva, much like the influenza virus and the common cold [ 1 , 2 ]. The outbreak of COVID-19 (Coronavirus disease-2019) has transformed into a global pandemic [ 3 ]. The name of the virus causing COVID-19 is given by The International Committee on Taxonomy of Viruses (ICTV) [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Infections associated with SARS-CoV-2 exploited via nanoformulated photodynamic therapy

et al. 2023

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Background and purpose: The pandemic of COVID-19 has highlighted the need for managing infectious diseases, which spreads by airborne transmission leading to serious health, social, and economic issues. SARS-CoV-2 is an enveloped virus with a 60–140 nm diameter and particle-like features, which majorly accounts for this disease. Expanding diagnostic capabilities, developing safe vaccinations with long-lasting immunity, and formulating effective medications are the strategies to be investigated. Experimental approach: For the literature search, electronic databases such as Scopus, Google Scholar, MEDLINE, Embase, PubMed, and Web of Science were used as the source. Search terms like 'Nano-mediated PDT,' 'PDT for SARS-CoV-2', and 'Nanotechnology in treatment for SARS-CoV-2' were used. Out of 275 initially selected articles, 198 were chosen after the abstract screening. During the full-text screening, 80 papers were excluded, and 18 were eliminated during data extraction. Preference was given to articles published from 2018 onwards, but a few older references were cited for their valuable information. Key results: Synthetic nanoparticles (NPs) have a close structural resemblance to viruses and interact greatly with their proteins due to their similarities in the configurations. NPs had previously been reported to be effective against a variety of viruses. In this way, with nanoparticles, photodynamic therapy (PDT) can be a viable alternative to antibiotics in fighting against microbial infections. The protocol of PDT includes the activation of photosensitizers using specific light to destroy microorganisms in the presence of oxygen, treating several respiratory diseases. Conclusion: The use of PDT in treating COVID-19 requires intensive investigations, which has been reviewed in this manuscript, including a computational approach to formulating effective photosensitizers.

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Implication of nanotechnology to reduce the environmental risks of waste associated with the COVID-19 pandemic

Abstract: COVID-19 pandemic has significantly impacted waste generation in the form of personal protective equipment. This review article examines the nanotechnology applications to reduce the environmental risks of waste associated with the COVID-19 pandemic.

Cited by 8 publications

References 89 publications

Potential antibacterial, antibiofilm, and photocatalytic performance of gamma-irradiated novel nanocomposite for enhanced disinfection applications with an investigated reaction mechanism

Potential antibacterial, antibiofilm, and photocatalytic performance of gamma-irradiated novel nanocomposite for enhanced disinfection applications with an investigated reaction mechanism

Application of Nanotechnology in Agroecosystems: Nanoparticles for Improving Agricultural Production

Infections associated with SARS-CoV-2 exploited via nanoformulated photodynamic therapy

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