Anticancer and photocatalytic activities of zinc oxide nanorods synthesized from Manilkara littoralis leaf extract

2021 ◽  
pp. 125541
Author(s):  
Saheb Ali ◽  
Kattakgoundar Govindaraj Sudha ◽  
Gopalu Karunakaran ◽  
Mariyappan Kowsalya ◽  
Evgeny Kolesnikov ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Leaf Extract ◽  
Zinc Oxide Nanorods ◽  
Oxide Nanorods ◽  
Photocatalytic Activities

scholarly journals Photocatalytic Degradation of Methylene Blue Using Zinc Oxide Nanorods Grown on Activated Carbon Fibers

2021 ◽  
Vol 13 (9) ◽  
pp. 4729
Author(s):  
Borhan Albiss ◽  
Muna Abu-Dalo
Keyword(s):  
Methylene Blue ◽  
Zinc Oxide ◽  
Activated Carbon ◽  
Carbon Fiber ◽  
Photocatalytic Degradation ◽  
Surface Area ◽  
Activated Carbon Fiber ◽  
Zinc Oxide Nanorods ◽  
Oxide Nanorods ◽  
Photocatalytic Activities

In this work, the synthesis, characterization, and photocatalytic performance of zinc oxide/activated carbon fiber nanocomposites prepared by hydrothermal method were investigated. Zinc oxide nanoparticles (ZnO-NP) were deposited as seeds on porous activated carbon fiber (ACF) substrates. Then, zinc oxide nanorods (ZnO-NR) were successfully grown on the seeds and assembled on the fibers’ surface in various patterns to form ZnO-NR/ACF nanocomposites. The nanocomposites were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectrometry, UV–vis diffuse reflectance spectra (DRS), and Brunauer–Emmett–Teller (BET) surface area analysis. SEM images showed that brush-like and flower-like ZnO-NR patterns were grown uniformly on the ACF surface with sizes depending on the ZnO-NP concentration, growth time, and temperature. The FTIR spectrum confirmed the presence of the major vibration bands, especially the absorption peaks representing the vibration modes of the COOH (C = O and C = C) functional group. Adsorption and photocatalytic activities of the synthesized catalytic adsorbents were compared using methylene blue (MB) as the model pollutant under UV irradiation. ZnO-NR/ACF nanocomposites showed excellent photocatalytic activity (~99% degradation of MB in 2 h) compared with that of bare ZnO-NR and ACF. Additionally, a recycling experiment demonstrated the stability of the catalyst; the catalytic degradation ratio of ZnO-NR/ACF reached more than 90% after five successive runs and possessed strong adsorption capacity and high photocatalytic ability. The enhanced photocatalytic activities may be related to the effects of the relatively high surface area, enhanced UV-light absorption, and decrease of charge carrier recombination resulting from the synergetic adsorption–photocatalytic degradation effect of ZnO and ACF.

Optimisation of zinc oxide nanorods for use in dye sensitised solar cells

2011 ◽  
Vol 15 (6) ◽  
pp. 401-405 ◽  
Author(s):  
S K Lim ◽  
H Q Le ◽  
G K L Goh ◽  
K K Lin ◽  
S B Dolmanan
Keyword(s):  
Zinc Oxide ◽  
Solar Cells ◽  
Zinc Oxide Nanorods ◽  
Oxide Nanorods

scholarly journals Cellulose Nanofiber-Based Nanocomposite Films Reinforced with Zinc Oxide Nanorods and Grapefruit Seed Extract

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 877 ◽  
Author(s):  
Swarup Roy ◽  
Hyun Chan Kim ◽  
Pooja S. Panicker ◽  
Jong-Whan Rhim ◽  
Jaehwan Kim
Keyword(s):  
Thermal Stability ◽  
Zinc Oxide ◽  
Seed Extract ◽  
Cellulose Nanofiber ◽  
Nanocomposite Films ◽  
Zinc Oxide Nanorods ◽  
Precipitation Method ◽  
Active Food Packaging ◽  
Oxide Nanorods ◽  
Grapefruit Seed Extract

Here, we report the fabrication and characterization of cellulose nanofiber (CNF)-based nanocomposite films reinforced with zinc oxide nanorods (ZnOs) and grapefruit seed extract (GSE). The CNF is isolated via a combination of chemical and physical methods, and the ZnO is prepared using a simple precipitation method. The ZnO and GSE are used as functional nanofillers to produce a CNF/ZnO/GSE film. Physical (morphology, chemical interactions, optical, mechanical, thermal stability, etc.) and functional (antimicrobial and antioxidant activities) film properties are tested. The incorporation of ZnO and GSE does not impact the crystalline structure, mechanical properties, or thermal stability of the CNF film. Nanocomposite films are highly transparent with improved ultraviolet blocking and vapor barrier properties. Moreover, the films exhibit effective antimicrobial and antioxidant actions. CNF/ZnO/GSE nanocomposite films with better quality and superior functional properties have many possibilities for active food packaging use.

Effects of Li and Cu dopants on structural properties of zinc oxide nanorods

2015 ◽  
Vol 77 ◽  
pp. 101-107 ◽  
Author(s):  
Kyung Ho Kim ◽  
Zhuguang Jin ◽  
Yoshio Abe ◽  
Midori Kawamura
Keyword(s):  
Zinc Oxide ◽  
Structural Properties ◽  
Zinc Oxide Nanorods ◽  
Oxide Nanorods

Development of Resistance-Based pH Sensor Using Zinc Oxide Nanorods

2016 ◽  
Vol 16 (6) ◽  
pp. 6102-6106 ◽  
Author(s):  
Vernalyn C Copa ◽  
Anthony R Tuico ◽  
Jamie P Mendoza ◽  
John Paul R Ferrolino ◽  
Christopher Jude T Vergara ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Ph Sensor ◽  
Zinc Oxide Nanorods ◽  
Development Of Resistance ◽  
Oxide Nanorods

Two-Photon Excited Ultraviolet Photoluminescence of Zinc Oxide Nanorods

2008 ◽  
Vol 8 (11) ◽  
pp. 5854-5857 ◽  
Author(s):  
Guangping Zhu ◽  
Chunxiang Xu ◽  
Jing Zhu ◽  
Changgui Lu ◽  
Yiping Cui ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Emission Band ◽  
Single Photon ◽  
Zno Nanorods ◽  
Zinc Oxide Nanorods ◽  
Excitation Wavelength ◽  
Photoluminescence Intensity ◽  
Vapor Phase Transport ◽  
Two Photon ◽  
Oxide Nanorods

High density zinc oxide nanorods with uniform size were synthesized on (100) silicon substrate by vapor-phase transport method. The scanning electron microscopy images reveal that the nanorods have an average diameter of about 400 nm. The X-ray diffraction pattern demonstrates the wurtzite crystalline structure of the ZnO nanorods growing along [0001] direction. The single-photon excited photoluminescence presents a strong ultraviolet emission band at 394 nm and a weak visible emission band at 600 nm. When the ZnO nanorods were respectively pumped by various wavelength lasers from 520 nm to 700 nm, two-photon excited ultraviolet photoluminescence was observed. The dependence of the two-photon excited photoluminescence intensity on the excitation wavelength and power was investigated in detail.

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