Synthesis and applications of ZnO nanowire: A review

Bagga, Shobi; Akhtar, Jamil; Mishra, Sanjeev

doi:10.1063/1.5047680

Cited by 30 publications

(30 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As mentioned before, a wide diversity of different nanostructure morphologies can be achieved with ZnO using chemical or physical methods including thermal evaporation [ 11 ], chemical vapor deposition (CVD) [ 12 , 13 ], sol-gel method [ 14 ], hydrothermal [ 15 ], molecular beam epitaxy (MBE) [ 16 ], metalorganic vapor-phase epitaxy (MOVPE) [ 17 ], and solvothermal growth [ 18 ]. Among the most reported ZnO nanostructures are zero dimensional systems 0D (nanoparticles NPs [ 19 ]), one-dimensional (1D; nanowires NWs [ 20 ], nanorods NRs [ 21 ], nanotubes NTs [ 22 ]), two-dimensional (2D; nanobelts [ 23 ], thin films [ 24 ]), and more complex morphologies such as nanohelix [ 25 ], nanorings [ 26 ], nanocages [ 27 ], nanoflowers [ 28 ], or comb-like structures [ 29 ].…”

Section: Introductionmentioning

confidence: 99%

“…Among the above-mentioned nanostructures, nanowires and nanorods represent a significant and broad class of 1D nanostructures and, therefore, are at the forefront of nanoscience and nanotechnology. NWs and NRs can present a polycrystalline or monocrystalline structure and highly anisotropic properties, which could result in rapid growth in one particular direction [ 20 , 21 ]. NWs typically have a cylindrical, hexagonal, square, or triangular cross-section, which is much smaller than the overall length of these 1D nanostructures.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Photoluminescence of ZnO Nanowires: A Review

et al. 2020

View full text Add to dashboard Cite

One-dimensional ZnO nanostructures (nanowires/nanorods) are attractive materials for applications such as gas sensors, biosensors, solar cells, and photocatalysts. This is due to the relatively easy production process of these kinds of nanostructures with excellent charge carrier transport properties and high crystalline quality. In this work, we review the photoluminescence (PL) properties of single and collective ZnO nanowires and nanorods. As different growth techniques were obtained for the presented samples, a brief review of two popular growth methods, vapor-liquid-solid (VLS) and hydrothermal, is shown. Then, a discussion of the emission process and characteristics of the near-band edge excitonic emission (NBE) and deep-level emission (DLE) bands is presented. Their respective contribution to the total emission of the nanostructure is discussed using the spatial information distribution obtained by scanning transmission electron microscopy−cathodoluminescence (STEM-CL) measurements. Also, the influence of surface effects on the photoluminescence of ZnO nanowires, as well as the temperature dependence, is briefly discussed for both ultraviolet and visible emissions. Finally, we present a discussion of the size reduction effects of the two main photoluminescent bands of ZnO. For a wide emission (near ultra-violet and visible), which has sometimes been attributed to different origins, we present a summary of the different native point defects or trap centers in ZnO as a cause for the different deep-level emission bands.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Photoluminescence of ZnO Nanowires: A Review

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Moreover, ZnO is a wide band-gap semiconductor (3.37 eV) featuring peculiar physical and chemical properties, such as photo- and sono-catalytic activities [ 57 – 59 ], piezoelectricity [ 60 , 61 ] and pyroelectric [ 62 ] behaviors. The abovementioned properties can be combined together and even strengthened by selecting, among the numerous ZnO morphologies, the most appropriate one: thin films [ 63 , 64 ], nanowires (NWs) [ 65 ], nanorods (NRs) [ 66 ], nanobelts [ 67 ], nanoparticles (NPs) [ 68 ] and flower-like structures [ 69 ] can be easily synthesized by wet and dry preparation approaches such as sol-gel and hydrothermal routes, and vapor-phase deposition techniques.…”

Section: Introductionmentioning

confidence: 99%

Doped Zinc Oxide Nanoparticles: Synthesis, Characterization and Potential Use in Nanomedicine

et al. 2020

View full text Add to dashboard Cite

Smart nanoparticles for medical applications have gathered considerable attention due to an improved biocompatibility and multifunctional properties useful in several applications, including advanced drug delivery systems, nanotheranostics and in vivo imaging. Among nanomaterials, zinc oxide nanoparticles (ZnO NPs) were deeply investigated due to their peculiar physical and chemical properties. The large surface to volume ratio, coupled with a reduced size, antimicrobial activity, photocatalytic and semiconducting properties, allowed the use of ZnO NPs as anticancer drugs in new generation physical therapies, nanoantibiotics and osteoinductive agents for bone tissue regeneration. However, ZnO NPs also show a limited stability in biological environments and unpredictable cytotoxic effects thereof. To overcome the abovementioned limitations and further extend the use of ZnO NPs in nanomedicine, doping seems to represent a promising solution. This review covers the main achievements in the use of doped ZnO NPs for nanomedicine applications. Sol-gel, as well as hydrothermal and combustion methods are largely employed to prepare ZnO NPs doped with rare earth and transition metal elements. For both dopant typologies, biomedical applications were demonstrated, such as enhanced antimicrobial activities and contrast imaging properties, along with an improved biocompatibility and stability of the colloidal ZnO NPs in biological media. The obtained results confirm that the doping of ZnO NPs represents a valuable tool to improve the corresponding biomedical properties with respect to the undoped counterpart, and also suggest that a new application of ZnO NPs in nanomedicine can be envisioned.

show abstract

“…In recent years, noticeable interest has been shown in one-dimensional (1D) metal oxide nanomaterials [1][2][3][4][5][6][7][8][9][10] such as nanowires, nanobelts and nanotubes. Many authors also include metal oxide nanofibers (NFs) in this group of nanomaterials [11][12][13][14], although in nature, they differ from classical 1D nanomaterials.…”

Section: Introductionmentioning

confidence: 99%

Electrospun Metal Oxide Nanofibers and Their Conductometric Gas Sensor Application. Part 2: Gas Sensors and Their Advantages and Limitations

Korotcenkov

2021

Nanomaterials

View full text Add to dashboard Cite

Electrospun metal oxide nanofibers, due to their unique structural and electrical properties, are now being considered as materials with great potential for gas sensor applications. This critical review attempts to assess the feasibility of these perspectives. This article discusses approaches to the manufacture of nanofiber-based gas sensors, as well as the results of analysis of the performances of these sensors. A detailed analysis of the disadvantages that can limit the use of electrospinning technology in the development of gas sensors is also presented in this article. It also proposes some approaches to solving problems that limit the use of nanofiber-based gas sensors. Finally, the summary provides an insight into the future prospects of electrospinning technology for the development of gas sensors aimed for the gas sensor market.

show abstract

Synthesis and applications of ZnO nanowire: A review

Cited by 30 publications

References 27 publications

Photoluminescence of ZnO Nanowires: A Review

Photoluminescence of ZnO Nanowires: A Review

Doped Zinc Oxide Nanoparticles: Synthesis, Characterization and Potential Use in Nanomedicine

Electrospun Metal Oxide Nanofibers and Their Conductometric Gas Sensor Application. Part 2: Gas Sensors and Their Advantages and Limitations

Contact Info

Product

Resources

About