scholarly journals Green synthesis of ZnO nanoparticles using orange fruit peel extract for antibacterial activities

RSC Advances ◽  
2020 ◽  
Vol 10 (40) ◽  
pp. 23899-23907 ◽  
Author(s):  
Tu Uyen Doan Thi ◽  
Trung Thoai Nguyen ◽  
Y Dang Thi ◽  
Kieu Hanh Ta Thi ◽  
Bach Thang Phan ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Zno Nanoparticles ◽  
Environmentally Friendly ◽  
Antibacterial Activities ◽  
Simple Approach ◽  
Fruit Peel ◽  
Zno Nps ◽  
Orange Fruit ◽  
Peel Extract

This paper presents an efficient, environmentally friendly, and simple approach for the green synthesis of ZnO nanoparticles (ZnO NPs) using orange fruit peel extract.

scholarly journals Nanoscaled Electrocatalytic Optically Modulated ZnO Nanoparticles through Green Process ofPunica granatumL. and Their Antibacterial Activities

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Xolile Fuku ◽  
Abdoulaye Diallo ◽  
Malik Maaza
Keyword(s):  
Metal Oxide ◽  
Green Synthesis ◽  
Zno Nanoparticles ◽  
Metal Oxide Nanoparticles ◽  
Antibacterial Activities ◽  
Oxide Semiconductor ◽  
Bacterial Strains ◽  
Zno Nps ◽  
Nanoparticle Biosynthesis ◽  
High Concentrations

Most recently, green synthesis of metal oxide nanoparticles has become an interesting subject of the nanoscience and nanotechnology. The use of plant systems has been deemed a green route and a dependable method for nanoparticle biosynthesis, owing to its environmental friendly nature. The present work demonstrates the bioreductive green synthesis of nanosized zinc oxide (ZnO) using peel extracts of pomegranate. Highly crystalline ZnO nanoparticles (ZnO NPs) which are 5 nm in particle size were characterised by HRTEM and XRD. FT-IR spectra confirmed the presence of the biomolecules and formation of plant protein-coated ZnO NPs and also the pure ZnO NPs. Electrochemical investigation revealed the redox properties and the conductivity of the as-prepared ZnO nanoparticles. The optical band gap of ZnO NPs was calculated to be 3.48 eV which indicates that ZnO NPs can be used in metal oxide semiconductor-based devices. Further, the nanomaterials were also found to be good inhibitors of bacterial strains at both low and high concentrations of 5–10 mg mL−1.

Citrus paradisi fruit peel extract mediated green synthesis of copper nanoparticles for remediation of Disperse Yellow 125 dye

2021 ◽  
Vol 212 ◽  
pp. 368-375
Author(s):  
Abdul Ghaffar ◽  
◽  
Shumaila Kiran ◽  
Muhammad Asim Rafique ◽  
Sarosh Iqbal ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Copper Nanoparticles ◽  
Citrus Paradisi ◽  
Fruit Peel ◽  
Peel Extract

Green Route for the Fabrication of ZnO Nanoparticles and Potential Functionalization with Chitosan Using Cross-linkers: A Review

2021 ◽  
Vol 3 (1) ◽  
pp. 1-25
Author(s):  
Hemra Hamrayev ◽  
Kamyar Shameli ◽  
Mostafa Yusefi ◽  
Serdar Korpayev
Keyword(s):  
Zinc Oxide ◽  
Metal Oxide ◽  
Green Synthesis ◽  
Zno Nanoparticles ◽  
Metal Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Synthesis Methods ◽  
Zno Nps ◽  
Biological Sources ◽  
Physical And Chemical

Zinc oxide is of significant importance for many industries due to its versatile properties, which have been enhanced with the production of this material in the nanoscale. Recent interest in the preparation of metal oxide nanoparticles using biological approaches has been reported in the literature. This technique known as “green synthesis” is an environmentally benign process than conventional methods like physical and chemical synthesis methods. Zinc oxide nanoparticles (ZnO-NPs) have been successfully obtained by green synthesis using different biological substrates like chitosan. Chitosan is biocompatible, biodegradable polymer having exclusive physical and chemical properties. Chitosan/metal oxide nanocomposite is a promising nanomaterial with enhanced properties for multiple functionalities. Therefore, this review discusses favorable approach in the formation of cross-linked Chitosan/ZnO nanocomposites attracting significant attention in various fields such biomedical due to their unique biodegradable, biocompatible, non-toxic nature. The use of biological sources, fabrication of green synthesized ZnO nanoparticles and its applications is briefly discussed. Overall, this review is a comprehensive study for the synthesis of ZnO-NPs using biological sources counting on their features and applications.

Green Synthesis of Nanoparticles Using Dried Fruit Peel Extract

IRC-SET 2018 ◽  
2019 ◽  
pp. 9-23
Author(s):  
Clyve Yu Leon Yaow ◽  
Ian Ee En Sim ◽  
Feldman Kuan Ming Lee ◽  
Doreen Wei Ying Yong ◽  
Wee Shong Chin
Keyword(s):  
Green Synthesis ◽  
Fruit Peel ◽  
Synthesis Of Nanoparticles ◽  
Dried Fruit ◽  
Peel Extract

Green Synthesis of Pyrido[2,1-a]isoquinolines and Pyrido[1,2-a]quinolines by Using ZnO Nanoparticles

Synlett ◽  
2017 ◽  
Vol 29 (04) ◽  
pp. 493-496 ◽  
Author(s):  
Fatemeh Sheikholeslami-Farahani ◽  
Maryam Ghazvini ◽  
Somayeh Soleimani-Amiri ◽  
Masoomeh Salimifard ◽  
Rezvaneh Rostamian
Keyword(s):  
Green Synthesis ◽  
Zno Nanoparticles ◽  
Room Temperature ◽  
Solvent Free ◽  
Quinoline Derivatives ◽  
Zno Nps ◽  
Efficient Catalyst ◽  
Solvent Free Conditions ◽  
Acetylenic Compounds

Pyrido[2,1-a]isoquinoline and pyrido[1,2-a]quinoline derivatives have been produced in good yields by the reaction of isoquinoline or quinoline, activated acetylenic compounds, α-halo ketones, and triphenylphosphine in the presence of ZnO nanoparticles (NPs) as an efficient catalyst under solvent-free conditions at room temperature. The reaction workup is easy, and the products can be readily separated from the reaction mixture. ZnO NPs markedly improved the yield of the product. The catalyst showed significant reusable activity.

scholarly journals Green Synthesis, Characterization & Antibacterial Studies of Silver (Ag) and Zinc Oxide (Zno) Nanoparticles

2020 ◽  
Vol 14 (3) ◽  
pp. 1999-2008
Author(s):  
H. Syed Jahangir ◽  
T. Tamil Kumar ◽  
M. Mary Concelia ◽  
R. Alamelu
Keyword(s):  
Zinc Oxide ◽  
Metal Oxide ◽  
Green Synthesis ◽  
Zno Nanoparticles ◽  
Size Structure ◽  
Metal Oxide Nanoparticles ◽  
Chemical Properties ◽  
Oxide Nanoparticles ◽  
Zno Nps ◽  
Leaf Extracts

Green synthesis nanoparticles were considered as an alternative effective resource instead of chemically engineered metal oxide nanoparticles. Using leaf extracts for green synthesis, essential for the reduction and oxidation process of the metals. Phyllanthus niruri (L.) and Aristolochia indica (L.) leaf extracts were used to synthesize yellowish brown coloured silver (Ag) and white coloured zinc oxide (ZnO) nanoparticles. Synthesized green nanoparticles characterized by different spectroscopic analysis (XRD, XPS, FTIR, PL) and TEM. Characterization results confirmed the particles morphology, size, structure and also their optical and photonic properties. Three different concentrations of Ag and ZnO NPs were analysed against three (gram positive) and five (gram negative) bacteria. Increased levels of green synthesized Ag and ZnO NPs showed increased zone of inhibition than amoxicillin (positive control). Our study proved that the green synthesized Ag and ZnO NPs showed similar unique physical and chemical properties with metal oxide nanoparticles but less toxic while their discharge into the ecosystem.

scholarly journals Facile Green Synthesis of LaCe Co-Doped ZnO Nanoparticles and Their Structural, Optical and Antibacterial Properties

2018 ◽  
Vol 4 (5) ◽  
pp. 552-554
Author(s):  
M. Karthikeyan ◽  
A. Jafar Ahamed ◽  
P. Vijaya Kumar
Keyword(s):  
Green Synthesis ◽  
Zno Nanoparticles ◽  
Synthesis Method ◽  
Antibacterial Properties ◽  
Inert Gases ◽  
Diffusion Method ◽  
Zno Nps ◽  
Vis Spectroscopy ◽  
Doped Zno ◽  
Co Doped

This present work describes the synthesis of LaCe co-doped zinc oxide (ZnO) nanoparticles (NPs) prepared by green method using Gymnema sylvestre (G. sylvestre) leaves as reducing as well as capping agent. Green synthesis method avoids inert gases, high pressure, laser radiation, high temperature, toxic chemicals etc. as compared to conventional method like sol-gel technique method, laser ablation method, solvothermal method, inert gas condensation method and chemical reduction method. The synthesized LaCe co-doped ZnO NPs was characterized by X-Ray diffraction (XRD), field emission scanning electron microscopy (FESEM), elemental analysis (EADX), Fourier transform infrared spectroscopy (FTIR), UV-vis spectroscopy and photoluminescence (PL). The LaCe co-doped ZnO NPs was tested against clinical pathogens such as gram positive G+ (Staphylococcus aureus and Streptococcus pneumoniae) and gram negative G- (Klebsiella pneumoniae, Shigella sydenteriae, Escherichia coli, Pseudomonas aeruginosa and Protus vulgaris) bacterial strains using agar well diffusion method.

Green synthesis of ZnO nanoparticles and comparison of 2,4-dinitrophenol removal efficiency using photocatalytic, sonocatalytic, and adsorption processes

2021 ◽  
pp. 1-17
Author(s):  
Mahmoud Nouri-Mashiran ◽  
Lobat Taghavi ◽  
Ebrahim Fataei ◽  
Gholamreza Ebrahimzadeh-Rajaei ◽  
Mahdi Ramezani
Keyword(s):  
Green Synthesis ◽  
Removal Efficiency ◽  
Zno Nanoparticles ◽  
Freundlich Isotherm ◽  
Isotherm Models ◽  
Order Kinetic ◽  
Zno Nps ◽  
Solution Ph ◽  
Adsorption Processes ◽  
Endothermic Process

In the present work, the extract of a paper-flower species called Bougainvillea spectabilis was used to green synthesis of ZnO nanoparticles (NPs). The synthesized ZnO NPs was confirmed by XRD, SEM, TEM, EDS, and FTIR techniques. Then, the ability of ZnO NPs to remove 2,4-dinitrophenol from aqueous solutions was investigated using photocatalytic and sonocatalytic processes. All experiments were carried out in a batch system and the effects of pH, NPs dosage, concentration, and contact time were evaluated. The findings of this study showed that the pseudo-second-order kinetic model could well describe the removal of 2,4-dinitrophenol by ZnO NPs. Langmuir, Freundlich, Temkin, and BE-T isotherm models were also assessed in a dark condition. The Freundlich isotherm model was able to provide the best fit with the experimental data. Examination of the results showed that the degradation of 2,4-dinitrophenol at the presence of ultraviolet (UV) and ultrasonic (US) waves was able to increase the removal efficiency to about twice as much as removal by adsorption alone. Also, The obtained results showed that the maximum removal of 2,4-dinitrophenol under photocatalytic and sonocatalytic conditions occurred at the presence of 25 mg of NPs, solution pH of 4, and 2,4-dinitrophenol concentration of 20 ppm. The best rates of photocatalytic and sonocatalytic degradation under the optimal conditions were 84.42% and 77.13% during 60 min, respectively. Thermodynamic studies indicated that the degradation of 2,4-dinitrophenol by ZnO NPs is a spontaneous and endothermic process in the direction of increasing entropy. The zinc oxide NPs have better performance in the removal of 2,4-dinitrophenol at the presence of UV and US waves.

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