Modification of Antibacterial ZnO Nanorods with CeO2 Nanoparticles: Role of CeO2 in Impacting Morphology and Antibacterial Activity

Lan, Shi; Sheng, Xia; Lu, Yaning; Li, Chun; Zhao, Shuang; Liu, Naren

doi:10.1016/j.colcom.2018.08.002

Cited by 25 publications

(12 citation statements)

References 49 publications

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“…Since the discovery of ZnO and its usefulness in varieties of applications, it has attracted increasing attention as promising semiconducting material [1][2][3][4][5]. Apart from gas sensing, ZnO has attracted high technological applications, like photodetectors, photodiodes, surface acoustic wave filters, solar cells, photonic crystals, LEDs, optical waveguides, due to its wide direct band gap (3.3 eV) and large excitation binding energy (60 meV) [6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Development of Ag/ZnO nanorods and nanoplates at low hydrothermal temperature and time for acetone sensing application: an insight into spillover mechanism

et al. 2019

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Nanostructure synthesis at low temperature with high purity and yield has a great potential in the present competitive research and development of nanomaterials for varieties of application. Here, we demonstrate the facile hydrothermal synthesis of ZnO nanocomposites at low hydrothermal temperature and time. With barely 80 °C hydrothermal temperature and 2 h of reaction time, ZnO nanorods were successfully synthesized, while by slightly increasing the reaction time (6 h-and-on), nanoplates of the same material were developed. Both the obtained nanostructures were analyzed using physio-chemical characterizing tools and examined for practical relevance as gas sensing material. The optimized sample was further treated to Ag loading (1-5 mol%) for lowering the operating temperature of the sensor. ZnO sample with 3 mol% Ag loading showed excellent sensitivity of 92.7% for 1000 ppm of acetone concentration with a drop in the operating temperature from 325 °C (Pristine ZnO) to 250 °C (Ag-loaded ZnO). The morphological correlation with reaction time and thereby sensitivity and spillover mechanism are discussed. Graphic abstractKeywords Composite materials · Hydrothermal process · Ag/ZnO · Sensors · Acetone However, in the present industrial scenario, chemical synthesis of these nanomaterials is facing enormous challenges in terms of trimming the overall process span and production at low temperature. Though hydrothermal synthesis route offers decent advantages over conventional synthesis routes, its high reaction temperature (hence high pressure) and longer reaction time are the major concerns at pilot/industrial-scale production. However, by effective tuning of reaction temperature in combination with the reaction time, one can get the same nanomaterial in the desired morphology. Here, the problem addressed in the paper is to ease the high temperature and time-consuming process for synthesizing ZnO-based nanostructures. The efforts were made to custom tailor the ZnO nanostructures at lower hydrothermal temperature (80 °C) and shorter reaction time (2-10 h). With barely 80 °C hydrothermal temperature and 2 h of reaction time, ZnO nanorods were successfully synthesized, while by slightly increasing the reaction time (6 h-and-on), nanoplates of the same material were developed. The obtained nanostructures are Compliance with ethical standardsConflict of interest The authors declare that there is no competing interest whatsoever.Publisher's Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

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Section: Introductionmentioning

confidence: 99%

Development of Ag/ZnO nanorods and nanoplates at low hydrothermal temperature and time for acetone sensing application: an insight into spillover mechanism

et al. 2019

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“…The sample suspensions were challenged with E. coli 8099, a typical Gram-negative bacterium, using the colony-counting method [ 38 ]. First, E. coli were grown overnight at 37 °C in Luria−Bertani medium (LB, 10 g of tryptone and 5 g of yeast extract/liter), and the bacterial cells were harvested by centrifugation, washed with phosphate-buffered saline, and diluted to concentrations of 1 × 10 5 CFU∙mL −1 .…”

Section: Methodsmentioning

confidence: 99%

An N-Halamine/Graphene Oxide-Functionalized Electrospun Polymer Membrane That Inactivates Bacteria on Contact and by Releasing Active Chlorine

Lan

Zhang

et al. 2021

Polymers

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The emergence of antibiotic-resistant “superbugs” in recent decades has led to widespread illness and death and is a major ongoing public health issue. Since traditional antimicrobials and antibiotics are in many cases showing limited or no effectiveness in fighting some emerging pathogens, there is an urgent need to develop and explore novel antibacterial agents that are both powerful and reliable. Combining two or more antibiotics or antimicrobials has become a hot topic in antibacterial research. In this contribution, we report on using a simple electrospinning technique to create an N-halamine/graphene oxide-modified polymer membrane with excellent antibacterial activity. With the assistance of advanced techniques, the as-obtained membrane was characterized in terms of its chemical composition, morphology, size, and the presence of active chlorine. Its antibacterial properties were tested with Escherichia coli (E. coli) as the model bacteria, using the colony-counting method. Interestingly, the final N-halamine/graphene oxide-based antibacterial fibrous membrane inactivated E. coli both on contact and by releasing active chlorine. We believe that the synergistic antimicrobial action of our as-fabricated fibrous membrane should have great potential for utilization in water disinfection, air purification, medical and healthcare products, textile products, and other antibacterial-associated fields.

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“…The CeO 2 -ZnO nanocomposite (200 mg) shows 92% and 88% of degradation for MB dye (5 ppm) under the irradiations of UV-and sunlight, respectively, for a constant catalytic load. It evidently shows that the degradation of MB dye is more prominent in UV light than in sunlight [41][42][43][44][45].…”

Section: Photocatalytic Propertiesmentioning

confidence: 99%

“…It evidently shows that the degradation of MB dye is more prominent in UV light than in sunlight. [41][42][43][44][45]. prepared CeO2-ZnO composites of various mole percentages with different heat treatment by the sol-gel method for photocatalytic applications.…”

Section: Photocatalytic Propertiesmentioning

confidence: 99%

Effect of CeO2-ZnO Nanocomposite for Photocatalytic and Antibacterial Activities

Syed

Yadav²,

Bahkali

et al. 2020

Crystals

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The impact of a CeO2-ZnO nanocomposite on the photocatalytic and antibacterial properties compared to bare ZnO was investigated. A CeO2-ZnO nanocomposite was synthesized using Acacia nilotica fruit extract as a novel fuel by a simple solution combustion method. The obtained CeO2-ZnO nanocomposite was confirmed structurally by XRD, FTIR, Raman and UV-DRS and morphologically by SEM/TEM analysis. The XRD pattern indicates the presence of both hexagonal Wurtzite-structured ZnO (major) and cubic-phase CeO2 (minor). FTIR shows the presence of a Ce-O-Ce vibration at 468 cm−1 and Zn-O vibration at 445 cm−1. The existence of a band at 460 cm−1 confirmed the F2g Raman-active mode of the fluorite cubic crystalline structure for CeO2. Diffused reflectance spectroscopy was used to estimate the bandgap (Eg) from Kubelka–Munk (K–M) theory which was found to be 3.4 eV. TEM analysis shows almost spherical-shaped particles, at a size of about 10–15 nm. The CeO2-ZnO nanocomposite shows a good BET specific surface area of 30 m2g−1. The surface defects and porosity of the CeO2-ZnO nanocomposite caused methylene blue (MB) dye to degrade under sunlight (88%) and UV light (92%). The CeO2-ZnO nanocomposite also exhibited considerable antibacterial activity against a pathogenic bacterial strain.

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Modification of Antibacterial ZnO Nanorods with CeO2 Nanoparticles: Role of CeO2 in Impacting Morphology and Antibacterial Activity

Cited by 25 publications

References 49 publications

Development of Ag/ZnO nanorods and nanoplates at low hydrothermal temperature and time for acetone sensing application: an insight into spillover mechanism

Development of Ag/ZnO nanorods and nanoplates at low hydrothermal temperature and time for acetone sensing application: an insight into spillover mechanism

An N-Halamine/Graphene Oxide-Functionalized Electrospun Polymer Membrane That Inactivates Bacteria on Contact and by Releasing Active Chlorine

Effect of CeO2-ZnO Nanocomposite for Photocatalytic and Antibacterial Activities

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