Article
Materials Science, Ceramics
Paula Derksen Macruz, Ramiro Picoli Nippes, Luiz Mario de Matos Jorge, Onelia Aparecida Andreo dos Santos
Summary: In this study, a ZnO-based photocatalyst was successfully synthesized using an alternative sol-gel route, which showed good performance in removing persistent pollutants in aqueous media, and demonstrated potential as a sustainable and low-cost photocatalyst.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
P. C. Nagajyothi, P. Muthuraman, C. O. Tettey, K. Yoo, Jaesool Shim
Summary: ZnO/Ag nanocomposites were synthesized using a green method with various Ag contents, leading to changes in surface, structural, morphological, and bio-activities. Among the composites, ZnO/Ag 7.5 showed superior anticancer activity against HeLa and SKOV-3 cell lines, reducing cell viability and ATP contents while increasing ROS generation in a dose-dependent manner.
CERAMICS INTERNATIONAL
(2021)
Article
Energy & Fuels
Italo Rennan Sousa Vieira, Arianne Aparecida da Silva, Bruno Dutra da Silva, Luiz Torres Neto, Leticia Tessaro, Cristina Russi Guimaraes Furtado, Ana Maria Furtado de Sousa, Nakedia M. F. Carvalho, Carlos Adam Conte-Junior
Summary: In this study, eco-friendly zinc oxide (ZnO) nanomaterial was synthesized from green tea extract. The synthesized ZnO showed a hexagonal crystalline structure with spherical morphology and a particle size of around 215 nm. It exhibited excellent photocatalytic degradation of methylene blue dye under UV light, as well as antibacterial activity against Escherichia coli and Staphylococcus aureus, and significant antioxidant activity. The findings suggest that ZnO synthesized from green tea leaf extract can be a promising alternative for various applications.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Engineering, Environmental
Fernanda G. L. Medeiros Borsagli, Aislan E. Paiva
Summary: This research presents new ecofriendly luminescent ZnO nanoconjugates based on different thiol ligands, which significantly improve the environmental photocatalytic activity of pure ZnO nanoparticles. The morphology, size, and photoluminescent properties of the ZnO nanoconjugates were influenced by the thiol ligands, leading to enhanced photocatalytic efficiency for dye degradation. The novel ZnO nanoconjugates demonstrated promising potential as ecologically friendly photocatalytic materials for wastewater treatment.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Optics
Bhavani Prasad Yalagala, Abhishek Singh Dahiya, Ravinder Dahiya
Summary: Disposable devices for reliable measurements have gained interest recently. This study presents degradable UV photodetectors made of ZnO nanowires on flexible chitosan substrate. The device exhibits excellent photo response, mechanical flexibility, and thermal stability. Biodegradability studies show fast degradation in deionized water compared to PBS solution. These findings suggest the potential for environmentally-friendly and cost-effective fabrication of wearable and disposable sensing systems.
OPTO-ELECTRONIC ADVANCES
(2023)
Article
Chemistry, Multidisciplinary
Maria Sevastaki, Vassilis M. Papadakis, Cosmin Romanitan, Mirela Petruta Suchea, George Kenanakis
Summary: This study presents a novel approach for fabricating eco-friendly ZnO nanoparticles on 3D-printed PLA scaffolds and demonstrates their efficacy in degrading paracetamol in water. The use of traditional Greek liquors and Baker's ammonia enabled the successful synthesis of photocatalytic active ZnO nanostructures. These findings highlight the potential of low-cost, environmentally friendly methods for producing ZnO/PLA structures with high photocatalytic activity for environmental applications.
Article
Environmental Sciences
Silambarasan Tamil Selvan, Ravikumar Chandrasekaran, Sanjivkumar Muthusamy, Dhandapani Ramamurthy
Summary: The present study investigated the bioremediation process, carbon dioxide sequestration, and biofuel production using the versatile freshwater microalgae, Tetradesmus obliquus TS03. The photobioreactor microalgal treatment method reduced heavy metals, such as cadmium (95.13%), chromium (97.28%), copper (98.67%), cobalt (98.19%), lead (96.72%), nickel (97.14%), and zinc (96.59%). The Langmuir and Freundlich isotherm kinetics models determined a heavy metal biosorption capacity rate (q(max)) of 98.90% after 10 days of effluent treatment with Tetradesmus obliquus TS03. T. obliquus TS03 utilized 98.34% of carbon dioxide (CO2) through acetyl CoA carboxylase and RuBisCO enzymes. Biodiesel extracted from the microalgae contained major fatty acid methyl esters identified by gas mass chromatography (GCMS), while bioethanol was detected using high-performance liquid chromatography (HPLC) at a retention time (RT) of 4.35 min (75,693.1046 mu V s(-1)).
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Carolina Picasso, Yolanda Salinas, Oliver Brueggemann, Markus Clark Scharber, Niyazi Serdar Sariciftci, Olavo D. F. Cardozo, Eriverton S. Rodrigues, Marcelo S. Silva, Andreas Stingl, Patricia M. A. Farias
Summary: Strategies for the production and use of nanomaterials are advancing towards safety and sustainability. The demand for high-performance nanomaterials, such as Zinc oxide (ZnO), is increasing due to its environmental compatibility and tunable properties. This study successfully produced both pristine and doped ZnO nanoparticles in powder form using whey as a chelating agent.
Article
Polymer Science
Ayed S. Allogmani, Roushdy M. Mohamed, Mohamed S. Hasanin
Summary: This study examined the preparation of biomaterial-based multifunctional biopolymers via an eco-friendly formulation method using ultrasound. The formulated nanocomposite showed a thermally stable nanostructure and demonstrated excellent cytocompatibility, antimicrobial activity, and antioxidant activity.
Article
Materials Science, Paper & Wood
Ittipol Taesuwan, Artjima Ounkaew, Manunya Okhawilai, Salim Hiziroglu, Wirat Jarernboon, Prinya Chindaprasirt, Pornnapa Kasemsiri
Summary: Eco-friendly smart nanocomposite hydrogels were developed by incorporating green synthesized silver nanoparticles into hydrogel, improving the long-term stability. The hydrogel containing AgNPs-30 showed the highest tensile strength and strain, with potential application as a strain sensor.
Article
Engineering, Environmental
Saurabh Sharma, Kuldeep Kumar, Naveen Thakur, Suvarcha Chauhan, Mohinder Singh Chauhan
Summary: In this study, CuO nanoparticles were successfully synthesized using a sustainable Ocimum tenuiflorum green route and evaluated for their photocatalytic and antibacterial activities. Characterization of the nanoparticles revealed excellent antibacterial properties and efficient photocatalytic degradation of methyl orange dye.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Spectroscopy
Jiyong Zhang, Xinru Xu, Wentao Zhang, Yi Huang, Peicong Zhang
Summary: In this study, Co2+-doped ZnO nanoarray photocatalyst was prepared using a hydrothermal process, and the effects of Co2+ doping amount and hydrothermal temperature on the structure and performance of the nanoarray were investigated. The results showed that the 2% Co2+-doped ZnO nanoarray exhibited excellent photocatalytic activity under visible light, and maintained good recyclability after multiple cycles.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Chemistry, Multidisciplinary
Wan-Tae Kim, Joo-Won Lee, Hong-Eun An, So-Hye Cho, Sohee Jeong
Summary: This study presents a chemical-free approach to produce an AlOOH adsorbent on aluminum sheets for effective removal of fluoride ions from water. The optimized adsorbent shows high removal efficiency, cost-effectiveness, eco-friendliness, and sustainability, making it a potential solution for engineered water treatment systems.
Article
Engineering, Multidisciplinary
Ibrahim Hotan Alsohaimi, Nasser Fahad Alotaibi, Ahmed Munawir Albarkani, Qiao Chen, Shaima M. N. Moustafa, Mutairah S. Alshammari, Amr Mohammad Nassar
Summary: This study presents the green fabrication of zinc oxide nanoparticles using beeswax extract as a reducing and capping agent. The synthesized nanoparticles exhibit excellent photocatalytic activity and antimicrobial properties.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Green & Sustainable Science & Technology
C. Ragavendran, C. Kamaraj, K. Jothimani, A. Priyadharsan, D. Anand Kumar, D. Natarajan, Guilherme Malafaia
Summary: This study aimed to synthesize and characterize zinc oxide nanoparticles (ZnO NPs) using pomegranate leaf extract, and evaluate their potential for killing Zika virus mosquito larvae, human pathogenic bacteria, and toxic substances. The results showed that these biosynthesized ZnO NPs exhibited excellent properties in terms of insecticidal, antibacterial, and dye degradation capabilities. Therefore, the biosynthesis of ZnO NPs from pomegranate leaf extract can be considered as an environmentally friendly and versatile approach.
SUSTAINABLE MATERIALS AND TECHNOLOGIES
(2023)
Article
Chemistry, Inorganic & Nuclear
Krishnappa Manjunath, Suchitra Prasad, Umesh V. Waghmare, C. N. R. Rao
DALTON TRANSACTIONS
(2018)
Article
Chemistry, Physical
Shivaraj B. Patil, Brij Kishore, K. Manjunath, Viswanath Reddy, G. Nagaraju
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2018)
Article
Chemistry, Physical
G. Nagaraju, Udayabhanu, J. P. Shubha, K. Manjunath, J. Dupont
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2018)
Article
Physics, Multidisciplinary
L. S. Reddy Yadav, M. Raghavendra, K. H. Sudheer Kumar, N. Dhananjaya, G. Nagaraju
EUROPEAN PHYSICAL JOURNAL PLUS
(2018)
Article
Chemistry, Physical
K. N. Manukumar, Brij Kishore, K. Manjunath, G. Nagaraju
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2018)
Article
Materials Science, Multidisciplinary
G. Nagaraju, T. Jayalakshmi, S. Ashok, K. Manjunath
BULLETIN OF MATERIALS SCIENCE
(2019)
Article
Chemistry, Inorganic & Nuclear
Krishnappa Manjunath, Suchitra Prasad, Swaraj Servottam, Umesh V. Waghmare, C. N. R. Rao
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2019)
Article
Materials Science, Multidisciplinary
Krishnappa Manjunath, Swaraj Servottam, Amit Soni, C. N. R. Rao
BULLETIN OF MATERIALS SCIENCE
(2020)
Article
Materials Science, Multidisciplinary
Krishnappa Manjunath, Reetendra Singh, Debendra Prasad Panda, Chintamani Nagesa Ramachandra Rao
Summary: New and stable V2O3 thin films were prepared using VO(acac)(2) and ozone via atomic layer deposition (ALD) and post-treatment process on a c-Al2O3 substrate. The films exhibited crystalline, single-phase rhombohedral structure with a thickness of 48 nm achieved by 1000 ALD cycles at 200 degrees C, and showed a sharp metal-insulator transition at approximately 165 K with a five orders of magnitude change in electrical resistivity.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2021)
Article
Chemistry, Physical
K. Manjunath, A. Saraswat, D. Samrat, C. N. R. Rao
Summary: Ti2O3 thin films were prepared by atomic layer deposition and their electrical resistivity was measured as a function of temperature. The films remained stable for up to three weeks and showed an insulator-metal transition at around 80 K, with a significant change in resistivity. The anomalous increase in resistivity in the films is consistent with the two-band model and is dependent on the crystallographic c/a ratio.
Article
Chemistry, Physical
Asmita Dutta, Ortal Breuer, Manjunath Krishnappa, Refael Minnes, Alla Zak, Arie Borenstein
Summary: In this study, carbon-coated WS2 nanotubes were synthesized, leading to significantly improved catalytic performance and electrochemical stability in the hydrogen evolution reaction. This provides a promising approach for obtaining a pH-universal and cost-effective electrocatalyst for energy conversion.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Nanoscience & Nanotechnology
L. S. Reddy Yadav, S. Pratibha, K. Manjunath, M. Shivanna, T. Ramakrishnappa, N. Dhananjaya, G. Nagaraju
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2019)
Article
Nanoscience & Nanotechnology
L. S. Reddy Yadav, K. Manjunath, C. Kavitha, G. Nagaraju
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2018)