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Review
Environmental Sciences
Radhakrishnan Yedhu Krishnan et al.
Summary: Microplastics are acknowledged as an emerging pollutant and are widely present in the air, soil, and especially the aquatic ecosystem. Wastewater treatment plants (WWTPs) are seen as the last defense against microplastics entering the environment. However, due to insufficient containment during water treatment, microplastics are discharged into aquatic bodies in large quantities, making WWTPs a significant source of microplastics release. Assessing the presence and behavior of microplastics in WWTPs is crucial for their control.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Duraisamy Elango et al.
Summary: In this study, Ag2Ox (3 wt%)-loaded ZnFe2O4 photocatalysts were synthesized for acetamiprid degradation, antibacterial, antioxidant, and toxicity assay by co-precipitation and incipient wet impregnation approach. The prepared photocatalysts were characterized and the optimum Ag2Ox (3 wt%)-loaded ZnFe2O4 photocatalysts demonstrated higher degradation efficiency for acetamiprid under sunlight irradiation. They also showed improved antioxidant and antibacterial activity compared to blank and bare ZnFe2O4 nanomaterials. The enhanced catalytic efficiency can be attributed to the loaded Ag2Ox NPs on ZnFe2O4 nanomaterials.
Article
Environmental Sciences
Velu Manikandan et al.
Summary: Green synthesis of high-quality reduced graphene oxide (rGO) from agro-industrial waste resources is a cost-effective and sustainable method. rGO possesses excellent properties such as uniform particle size, high conductivity, and extraordinary chemical stability. The applications of rGO include water purification and the biomedical fields, among others.
Review
Environmental Sciences
Sengani Manimegalai et al.
Summary: This review discusses the current problems and future challenges in water treatments, focusing on integrated and single-treatment technologies for various drinking water resources. The treatment systems can remediate contaminants such as inorganic non-metallic matter, heavy metals, natural organic matter, endocrine-disrupting chemicals, disinfection by-products, and microbiological pollutants. The advancements in antibacterial and adsorption capabilities of carbon-based nanomaterials provide new options for excluding contaminants from drinking water. The review also addresses the barriers to using nanoparticles in long-term water treatment.
Article
Chemistry, Multidisciplinary
Jay C. Bullen et al.
Summary: This study investigates the photocatalytic oxidation of arsenic(III) using TiO2/Fe2O3 composite photocatalyst-adsorbents. The results show that coupling TiO2 with Fe2O3 enhances the adsorption of arsenic, but decreases the oxidation rates due to parasitic light absorption and changes in the rate law. The study also introduces a multi-adsorbate surface complexation model to describe the oxidation kinetics of arsenic(III), including the competitive adsorption of As(V).
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Review
Environmental Sciences
Rania Al-Tohamy et al.
Summary: The synthetic dyes used in the textile industry cause pollution in water bodies, which has negative consequences on the environment and human health. It is important to effectively treat dye-containing wastewater using eco-friendly technologies to reduce contamination of aquatic habitats and natural water resources. This review discusses the effects of textile dyes on water bodies, aquatic flora, and human health, and compares various technologies for removing dyes from textile wastewater.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Engineering, Electrical & Electronic
Ahmad Al-Sarraj et al.
Summary: In this study, silver loaded tungsten oxide nanoparticles were prepared using a microwave-assisted chemical route. The Ag2O/WO3 nanoparticles showed enhanced H2S sensing abilities at very low temperatures, making them promising sensors for wearable devices and industrial settings. This research highlights the potential of Ag2O/WO3 sensors for low-temperature H2S detection with improved sensitivity and simple fabrication process.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Energy & Fuels
Velu Manikandan et al.
Summary: The utilization of sol-gel method to fabricate ZnO/MOGAC nanocomposites enables the effective removal of phosphates and nitrates in contaminated water. ZnO/MOGAC NCs exhibit excellent removal performance and stability.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Review
Microbiology
U. Haripriyan et al.
Summary: This article discusses the threat of organic pollutants to sustainable development and the importance of wastewater treatment. Bioremediation plays a key role in removing organic pollutants and is an economical and environmentally friendly method of wastewater treatment. The article also explores the application of genetically engineered microbes and artificial intelligence techniques in bioremediation, as well as identifying issues and research needs in the process.
ARCHIVES OF MICROBIOLOGY
(2022)
Article
Environmental Sciences
M. Govarthanan et al.
Summary: The La-MOF@x%PANI composite was synthesized using ultra-sonication and its adsorption mechanism for Pb2+ ions was systematically investigated. The composite exhibited excellent adsorption performance and stability, making it a promising material for removing Pb2+ ions from aqueous environments.
ENVIRONMENTAL POLLUTION
(2022)
Article
Materials Science, Multidisciplinary
J. Arun et al.
Summary: Biomass derived carbon nanocomposites are cost-effective and promising for removing organic pollutants in water. Future research should focus on simultaneous removal of pollutants in industrial wastewater for sustainable development goals. Practical applications of carbon nanocomposites in wastewater treatment need to be addressed in an economical way.
Article
Environmental Sciences
P. Muthukumaran et al.
Summary: The exploding global population and its impact on the environment have led to detrimental effects, making environmental mitigation the prime challenge of this century. Nanotechnology, specifically using biopolymer composites, offers unlimited potential for handling xenobiotics and environmental clean-up. This review extensively examines the development of biopolymer nanoparticles (Bp-NPs) and biopolymer nanomaterials (Bp-NMs) from various biomolecules, emphasizing their applications in hazardous xenobiotics handling and pollution management.
Article
Environmental Sciences
Velu Manikandan et al.
Summary: In this study, a CoOx-loaded Zr-doped ZnFe2O4 (CoOx/Zr-ZFO) NR photocatalyst was synthesized for bacterial inactivation and degradation of organic pollutants. The photocatalyst exhibited significant absorption in the visible light region, leading to improved efficiency in bacteria degradation and inactivation. Compared to other metal oxide-loaded Zr-ZFO NRs, the CoOx/Zr-ZFO-3 NR photocatalyst showed higher inactivation efficiency and demonstrated high degradation efficiencies for organic pollutants. This study provides a novel approach for the development of photocatalysts active in visible light for bacterial disinfection and organic degradation.
Review
Chemistry, Physical
Junhua You et al.
Summary: High entropy alloys (HEAs) are a new class of multi-metal alloys that have outstanding corrosion resistance, radiation stability, and superior mechanical properties. Research on the characteristics of HEA is limited, and there is a need to focus on the functional aspects of HEA to achieve their maximum potential. Recent studies have shown that HEAs have unique functions and can be used as excellent catalyst materials. However, the applicability of HEA as catalysts is affected by various factors, and the catalytic mechanism of HEA electrocatalysts is still unclear. Therefore, there are challenges in the research on high entropy electrocatalysts.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Review
Environmental Sciences
Velu Manikandan et al.
Summary: Green synthesis of CQDs has great potential for various applications due to their environmental compatibility and excellent properties. With the use of low-cost, non-toxic raw materials and simple operations, high-quality CQDs can be synthesized and widely applied in fields such as wastewater treatment and biomedicine.
ENVIRONMENTAL RESEARCH
(2022)
Article
Food Science & Technology
Lalitha Gnanasekaran et al.
Summary: In recent days, the existence of certain food colorants has raised concerns about their potential carcinogenic effects on human health. This study proposes the use of photocatalyst treatment with nanoflower shaped NiO/CuO to degrade a model food colorant under visible light. The results show promising degradation efficiency and visible light activity, suggesting that this catalyst could be a potential solution for removing food colorants and ensuring food safety.
FOOD AND CHEMICAL TOXICOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Sama Torkzaban et al.
Summary: In this study, magnetic CaO/ZnFe2O4 hollow microspheres catalysts were successfully synthesized using yeast as a green template. The catalysts exhibited good acid-base properties and catalytic activity, and could be easily separated from the reaction environment for repeated use.
Article
Environmental Sciences
Velu Manikandan et al.
Summary: In this study, Zr-doped Fe2O3 photocatalysts were synthesized using hydrothermal and air quenching methods, and the synergistic effects of CoOx and Zr-doping on bacteria inactivation and organic pollutant degradation were investigated. A highly photoactive CoOx/Zr-doped Fe2O3 photocatalyst was successfully developed and showed significant improvements in bacteria inactivation efficiency and organic pollutant degradation.
Article
Environmental Sciences
Efaq Ali Noman et al.
Summary: Heavy-metal-bearing wastewater is a major challenge for the mining industry, and bio-inspired engineering nanomaterials show great promise for metal ion adsorption. However, the current processes used for adsorbent preparation have adverse environmental impacts. Life cycle assessment of adsorbents derived from agricultural wastes reveals their negative impact on the environment.
Article
Green & Sustainable Science & Technology
Manikandan Velu et al.
Summary: This study used a different light spectrum to enhance the removal of nitrate and phosphate from polluted water, demonstrating the high photocatalytic efficiency of Al(2)O(3)NPs/MOGAC nanocomposites under red LED light. The synthesized nanocomposites showed good stability and high removal rates for nitrate and phosphate ions, indicating their potential as effective adsorbents for water purification.
JOURNAL OF CLEANER PRODUCTION
(2021)
Review
Chemistry, Physical
Yao Zhao et al.
Summary: The preparation of hydrogen by electrolysis of water is a promising technology, but the mechanism of oxygen evolution reaction limits its efficiency.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Environmental Sciences
Punniyakotti Parthipan et al.
Summary: This study focuses on the use of eco-friendly hydrothermal synthesis of PErGO for treating industrial wastewater containing toxic dyes. The results show that PErGO exhibits high photocatalytic degradation efficiency towards harmful substances like methylene blue and methyl orange, with stable and significant activity observed over multiple degradation cycles, making it suitable for dye industry wastewater treatment.
ENVIRONMENTAL RESEARCH
(2021)
Article
Environmental Sciences
Jalaja Prasad Malavika et al.
Summary: A sustainable green method was demonstrated to prepare fluorescent carbon quantum dots that showed excellent photocatalytic efficiency and anti-proliferative effects in breast cancer cells. Moreover, the carbon quantum dots exhibited impressive live-cell imaging properties.
ENVIRONMENTAL RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
Ho Sub Bae et al.
Summary: Visible light-active rhodium and antimony-co-doped SrTiO3 nanocubes were synthesized at low temperatures and their photocatalytic properties were enhanced by the addition of transition metal oxides. Among the studied metal oxides, 2 wt% CoOx-loaded Rh/Sb:SrTiO3 exhibited the highest photocatalytic performance for organic pollutant degradation and bacteria inactivation under visible light irradiation. The study also identified superoxide anion radicals and holes as the major active species responsible for the photocatalytic degradation process.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Velu Manikandan et al.
Summary: In this study, Mo-BiVO4-loaded photocatalysts with different metal oxide cocatalysts were synthesized and applied for microbial inactivation and dye degradation under visible-light conditions. The CuOx-loaded Mo-BiVO4 photocatalyst showed the highest efficiency in bacterial inactivation and dye degradation processes. The synergistic effect of Mo doping and Cu2+ ions in CuOx contributed to the enhanced antimicrobial ability and degradation performance.
Article
Chemistry, Multidisciplinary
Junhua You et al.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2020)
Article
Chemistry, Multidisciplinary
Junpeng Ren et al.
Article
Chemistry, Physical
Boobas Singaram et al.
Article
Chemistry, Physical
Noto Susanto Gultom et al.
ACS APPLIED ENERGY MATERIALS
(2019)
Article
Nanoscience & Nanotechnology
Haiyang Liu et al.
ACS APPLIED NANO MATERIALS
(2019)
Article
Chemistry, Physical
Na Wei et al.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2016)
Article
Nanoscience & Nanotechnology
Xiao-Wei Hu et al.
ACS APPLIED MATERIALS & INTERFACES
(2015)
Article
Chemistry, Analytical
Jie Zhang et al.
SENSORS AND ACTUATORS B-CHEMICAL
(2015)
