Zn-O Bond Research Articles

Eco friendly synthesis and characterization of zinc oxide nanoparticles from Aegle marmelos and its cytotoxicity effects on MCF-7 cell lines

Abstract An attempt was made to synthesize zinc oxide gum white nanoparticles (ZnO-GWNPs) by the greenway approach using Aegle marmelos (Bael fruit) juice extract as a capping and reducing agent. Synthesis of ZnO-GWNPs by greener approach is safer, more economical, more energy-efficient, eco-friendlier, and less toxic than chemically synthesized counterparts. The optical properties of the ZnO-GWNPs were ascertained through UV-Vis spectroscopy, Fourier Transform-Infrared (FT-IR), X-ray diffraction (XRD), High-resolution transmittance electron microscopy (HRTEM). A characteristic absorption peak at 385nm confirmed the presence of ZnO-GWNP using UV-Vis spectroscopy. FTIR spectrum revealed that the characteristic absorption peak of the Zn-O bond was observed at 467 cm-1. The XRD result for the ZnO showed the tendency of the three most intense diffraction peaks. The average crystallite size ZnO NPs at scattering angle (2θ) 22.89 and 32.15 was 39.14 and 26.08 nm and it showed the presence of miller indices of (100), (002), (101), (102) respectively. The EDX spectrum gave strong signals for zinc and oxygen indicating the occurrence of the nanoparticles in their oxide form rather than the pure zinc form. The SEM image showed the surface morphology of ZnO-GW NPs and the HR-TEM image showed the crystalline nature of ZnO-GW NPs. Cytotoxicity study of ZnO-GW NPs was determined against MCF-7 cell lines and the IC50 values were found to be 40 µg/mL and 60 µg/mL at 24 h and 48 h respectively.

Hydrogen enhancing Ga doping efficiency and electron mobility in high-performance transparent conducting Ga-doped ZnO films

In this work, we prepare H and Ga co-doped ZnO (HGZO) films by a sputtering method with over 80% transparency in 400–1100 nm wavelength range and a sheet resistance as low as 3.9 Ω/sq. Hydrogen is recognized as a key element to enhance transmittance and conductivity. Spectroscopic evidence has indicated that hydrogen assists in substituting Ga3+ for Zn2+ (GaZn) in ZnO lattice; it produces more effective GaZn donors and increases electron concentration. We propose for the first time based on interstitial and substitutional hydrogen configurations that the interactions of Zn atom with its neighboring hydrogen atoms can weaken Zn–O bonds in ZnO lattice, and thus facilitate the substitution of Ga3+ for Zn2+. Furthermore, hydrogen can improve the quality of crystalline grains by lowering point-defect density such as Ga, Zn interstitials, Zn, and O vacancies, which strongly enhance electron mobility in HGZO films. The highest mobility of 48.6 cm2/Vs was obtained in the best-performing film.

The significant role of the chemically bonded interfaces in BiVO4/ZnO heterostructures for photoelectrochemical water splitting

We have fabricated chemically bonded BiVO4/ZnO quantum dot (QD) heterostructures through a simple solution dry-out method. Chemically bonded interfaces (CBIs), thin films surrounding the ZnO QDs, are formed during the calcination process, which tightly combines the BiVO4 and ZnO structures through Bi-O and Zn-O bonds. The first principle calculations demonstrate that CBIs can not only facilitate the photoexcited electron transfer from ZnO to BiVO4, but can also trap their holes serving as a hole-transport layer. As observed from the spectra of incident photo-to-current conversion efficiency (IPCE), CBIs operate in the UV as well as the visible light region. The BiVO4/ZnO QDs showed the greatest photocurrent density (5.5 mA/cm2 at 1.23 V vs. RHE) in the absence of a cocatalyst. Moreover, the etched XPS spectra show that the Bi ions get partially reduced to elemental bismuth by ethylene glycol during the calcination process. This can also contribute to the water oxidation kinetics facilitated by the valence variation.

Antibacterial response of oral microcosm biofilm to nano-zinc oxide in adhesive resin

ObjectiveVarious nanoparticles are currently under investigation to impart biointeractivity for dental materials. This study aimed to: (1) formulate an experimental dental adhesive containing ZnO nanoparticles; (2) evaluate its chemical and mechanical properties; and (3) assess the antibacterial response against oral microcosm biofilm. MethodsNanosized ZnO was chemically and morphologically evaluated. ZnO was incorporated at 0 (GCTRL), 2.5 (G2.5%), 5 (G5%) and 7.5 (G5%) wt.% in an experimental dental adhesive. The adhesives were evaluated for the degree of conversion (DC), flexural strength (FS), and elastic modulus (E). The antibacterial activity was evaluated using a 48h-microcosm biofilm model after the formation of acquired pellicle on samples’ surfaces. Colony-forming units (CFU), metabolic activity, and live/dead staining were assessed. ResultsNanosized ZnO presented characteristic peaks of Zn-O bonds, and the particles were arranged in agglomerates. The DC ranged from 62.21 (±1.05) % for GCtrl to 46.15 (±1.23) % for G7.5% (p<0.05). G7.5% showed lower FS compared to all groups (p<0.05). Despite achieving higher E (p<0.05), G2.5% did not show differences for GCtrl regarding the FS (p>0.05). G7.5% had lower CFU/mL compared to GCtrl for mutans streptococci (p<0.05) and total microorganisms (p<0.05), besides presenting lower metabolic activity (p<0.05) and higher dead bacteria via biofilm staining. SignificanceThe dental adhesives' physicochemical properties were similar to commercial adhesives and in compliance with ISO recommendations. G7.5% restricted the growth of oral microcosm biofilm without impairing the physicochemical performance.

Enabling selective, room-temperature gas detection using atomically dispersed Zn

Atomically dispersed metal catalysts (AMC) provide superb catalytic performance and 100 % atom utilization. AMC provide an almost perfect solution to the limitations of poor selectivity and high power consumption in semiconductor gas sensor applications. Herein, we report the synthesis of AMC ZnNC materials and their application as highly selective room temperature gas sensors for the first time. Various characterization methods including scanning transmission electron microscopy and X-ray absorption spectroscopy corroborate the presence of atomically dispersed Zn with ZnNC2 coordination. As a sample of AMC for gas detection, the AMC ZnNC2-based sensor has 25 % response to 1500 ppm ethanol (C2H5OH) at room temperature (∼25 °C) with excellent selectivity. Density functional theory calculations revealed that ethanol was chemically absorbed on ZnNC2 by forming a strong Zn-O bond, leading to obvious charge transfer from ethanol to ZnNC2. The sensor response can be attributed to the chemical adsorption of ethanol molecules rather than a redox reaction on the ZnNC2 surface. The approach proposed here should yield similar novel developments in gas sensing.

Enhanced fluorescence of Zn-doped carbon quantum dots using zinc citrate chelate as precursor for fluorescent sensor applications

The Zn2+ doped Carbon Quantum Dots (Zn-CQDs) were synthesized with zinc citrate chelate as the precursor by a hydrothermal method. The evaluation results indicated that Zn2+ was successfully embedded in CQDs. Most of Zn2+ ions were combined with carboxyl groups on the surface of carbon dots to form Zn-O bonds and some Zn2+ ions were embedded in the interstice points of CQDs. The remaining Zn2+ were reduced to zinc atoms and adsorbed on the surface of CQDs. With the increase in Zn2+ concentration, the size of synthesized Zn-CQDs increased. When zinc ion concentration increased to 9%, the average size of Zn-CQDs grew up to 8 nm, but the size of undoped CQDs was just 1.5 nm. When Zn2+ concentration increased from 1% to 9%, the fluorescence intensity increased, while reaching above 9%, the fluorescence intensity showed a downward trend. When Zn2+ concentration was 7%, the fluorescence quantum yield of Zn-CQDs increased to 48%, but the fluorescence quantum yield of undoped CQDs was only 37%. With the increase in Zn2+ concentration, the PL spectrum of Zn-CQDs showed a red shift phenomenon. In addition, Zn-CQDs showed superior fluorescent sensing capability to Fe3+ and Hg2+, presenting greater fluorescence quenching effect on Fe3+ and Hg2+ than CA-CQDs. Therefore, Zn-CQDs demonstrated excellent fluorescence properties and can be applied in fluorescent sensor, biological imaging, optoelectronics, and catalysis fields.

Optimization of zinc oxide nanoparticles biosynthesis from Crateva adansonii using Box-Behnken design and its antimicrobial activity

Abstract In the present study, rapid eco-friendly method was applied to optimize and synthesize zinc oxide nano particles from Crateva adansonii using Box-Behnken Design (BBD) of response surface methodology (RSM). The best optimal conditions for enhanced green synthesis of ZnONP from Crateva adansonii were ZnNO3 (3 mM), incubation time (15 h), temperature (65 ᵒC) and pH (6).Green synthesized and optimized ZnONP exhibits a strong absorption peak at 292 nm in UV region and it shows FTIR absorption spectrum at 536 cm−1 is due to the characteristic absorption of Zn-O bond. Green synthesized ZnONP shown hexagonal wurtzite structure and 30–55 nm in size reveals significant antimicrobial activity against human clinical pathogens. ZnONP showed maximum zone of inhibition 18 mm and 16 mm against Pseudomonas aeruginosa and Staphylococcus aureus, respectively. Eco-friendly green synthesized Zinc oxide nanoparticles from Crateva adansonii shows significant antimicrobial activity against human clinical pathogens and it useful to treat multi drug resistance bacterial pathogens.

The role of annealing temperature on structural, optical and dielectric properties of La3+ modified Zinc Oxide (ZnO) nanostructures

Abstract The present work reports the effect of La3+ ion substitution on structural, optical and dielectric properties of ZnO nanostructures synthesized via co-precipitation technique. The XRD (X-Ray Diffraction) result confirms the wurtzite hexagonal structure with space group P63mc. The calculated domain size, intra-plane spacing and volume of cell of La3+/ZnO-300 sample is 27.4 nm, 2.5493 A and 57.018 A3. The surface Morphology studies, Mapping of elements and EDS (Energy Dispersive Spectra) were performed via using SEM (scanning electron microscope). The PL spectra measured via photoluminescence spectrometer with excitation wavelength (λ) 320 nm. IR spectra with peaks near about 532–630 cm−1 were measured out via using FTIR (Furrier Transform Infrared Spectrometer) spectrometer and consequent to the stretching of the Zn-O bonds. The complex impedance spectroscopy of La3+/ZnO-300 sample was carried out via galvenostat/potentiostat in the range of frequency 5 MHz to 10 Hz at 300 K. The value of grain margin resistance is 31.25 MΩ (at RT) for La3+/ZnO-300 sample.

Overlap properties of chemical bonds in generic systems including unusual bonding situations.

Chemical bond is a ubiquitous and fundamental concept in chemistry, in which the overlap plays a defining role. By using a new approach based on localized molecular orbitals, the overlap properties, e.g., polarizability [Formula: see text], population pOP, intra [Formula: see text], and inter [Formula: see text] repulsions, and density ρOP, of polyatomic systems were calculated, analyzed, and correlated. Several trends are shown for these properties, which are rationalized by the balance of some well-known effects, such as, electron donor/withdrawing character and electronegativity. The overlap properties of unusual bonds are also analyzed, revealing an OZn4(OOCH)6 structure with four equivalent Zn-O chemical bonds with overlap properties like the O-O bond in H2O2, while in protonated methane [Formula: see text], it is observed that a CH3⋯[Formula: see text] bond pattern at the equilibrium structure changes to a [Formula: see text]⋯H2 pattern upon dissociation. Charge-shift resonance energies, atom-in-molecule properties, and the lone-pair-bond-weakening effects are related to the overlap properties, which can provide alternative views and insights into chemical bonds. Graphical abstract A chemical bond analysis approach based on its overlap properties is presented for the first time. The model was applied directly to 25 diatomics and for 28 bonds in polytomics employing localized molecular orbitals. Correlations of the overlap properties with the charge-shift resonance energies and with atom-in-molecule (AIM) properties were uncovered. In addition, it provided insights into the Zn-O bonds in the unusual OZn4(OOCH)6 system as well as in the bonding patterns of [Formula: see text] at equilibrium and upon dissociation.

Substantial effect of Cr doping on the antimicrobial activity of ZnO nanoparticles prepared by ultrasonication process

This study was involved to investigate the effect of Cr incorporation on various physic-chemical properties of ZnO nanopowder that including structural, morphological, optical and antibacterial. The synthesized powder reveals wurtzite hexagonal structure with decreased crystallite size from X-ray diffraction analysis. The scanning electron microscope (SEM) result confirmed that the formation of hexagonal shaped particles was observed on Cr doped ZnO nanoparticles. The presence of vibration band in the range of 450–600 cm−1 was confirm, the successful formation of Zn-O bond in bare and Cr doped ZnO nanoparticles. The decreased reflectance and red shift in the UV–vis diffused reflectance spectra was confirmed the decreased band gap energy. The antibacterial investigation of the nanopowder reveals, the higher zone of inhibition, membrane damage and intracellular alterations were observed against K. pneumoniae and C. albicans compared with other microorganisms. Thus, the result was suggested that the Cr doped ZnO nanoparticle as a promising candidate material for the development of new antibiotics against various bacteria.

Investigations of the characteristics and chemical bonds of Al and F co-doped ZnO films as a function of F2flow rate

In this study, we investigate the effect of fluorine (F[Formula: see text] flow rate on the crystal characteristics and chemical bonds of Al-Doped ZnO (AFZO) Films. At first, 1 wt% Al2O3was mixed with 99 wt% ZnO to form the Al-doped ZnO ceramic target, the radio frequency (RF) magnetron sputtering method was used to deposit the AFZO films by introducing different flow rates of F2gas using F2/(Ar + F2) mixing atmosphere during the deposition process. F2flow rates (F2/(Ar + F2)) were changed in the range of [Formula: see text]%, and F2ratio was controlled using the mixing gases of (F2(5%) + 95% Ar) and pure Ar. AFZO films were deposited on the EagleXG glass and the films’ thickness was about 330 nm by controlling the deposition time. After AFZO films were deposited, their crystalline structure and electrical characteristics were well investigated. Finally, a comparative study of surfaces of AFZO films was investigated using X-ray photoelectron spectroscopy (XPS) to find the variations of the chemical bonds as the deposition temperature and F2flow rate were changed.

Biosynthesis, characterization and photocatalytic activity of ZnO nanoparticles using extracts of Justicia spicigera for the degradation of methylene blue

This paper presents an easy and simple green route method for the biosynthesis of ZnO nanoparticles, which were synthesized using Justicia spicigera extract, in different concentrations (1, 2, 4 and 8% in weight-volume). The samples were characterized by Fourier Transform Infrared (FT-IR) and Visible Ultraviolet Spectrometry (UV-vis) spectrophotometric techniques, furthermore complemented with the use of X-ray Diffraction (XRD), Scanning (SEM) and Transmission Electron Microscopy (TEM). Finally, the different catalysts were tested for the degradation of methylene blue under ultraviolet light. The samples presented the typical band of the Zn-O bond at 618 cm−1. UV-vis studies revealed a characteristic signal at 373-376 nm, confirming the formation of ZnO nanoparticles. The different samples manifest the same hexagonal crystal structure, Wurtzite. These materials have a semi-spherical morphology and sizes ranging from 10 to 100 nm. Regarding photocatalytic activity, the catalysts degraded close to 90% of the dye in 120 min.

Synthesis and Characterization of CuO-ZnO Nano Additive for Lubricant

A mixed metal oxide (CuO-ZnO) additives has been successfully synthesized in laboratory by co-precipitation technique. The optimum ratio of CuO and ZnO in mixed metal oxide was found to be 1:1. The sodium lauryl sulfate (SLS) has been used as surfactant. The obtained material was found to be crystalline having crystalline size of 18 nm. The stretching band in FTIR spectra at around 1072 cm-1 to 750 cm-1 and around 600 cm-1 indicates the presence of Zn-O and Cu-O bonds. As prepared nano-particles have been used as nano additive in base oil to improve physio-chemical parameters of lubricants. The results revealed that the additive blended base oil (lubricant) has shown excellent lubrication properties. The higher kinematic viscosity of 33.0504 and 6.0158 at 40°C and 100°C respectively showed that as prepared additive blended lubricant is of ISO-32 category according to ISO grading system for lubricants. Similarly, viscosity index was found to be improved from 101 to 129. The pour point was found to be significantly decreased from -6°C to -24°C. So it can be used as good pour point depressant and could be used even in the extreme cold environment condition. The flash point was found to be increased from 215°C to 220°C indicating that the prepared mixed metal oxide (CuO-ZnO) acts as flash point enhancer. The copper strip corrosion rating was found to be 1b for additive indicating the non corrosive nature. The absence of moisture and pH around the neutral range 6.18 showed the additive blended lubricant is not harmful for machinery devices.

Band gap engineering, quantum confinement, defect mediated broadband visible photoluminescence and associated quantum States of size tuned zinc oxide nanostructures

A simple wet chemical method has been used to synthesize ZnO nanostructures. The ZnO nanocrystals exhibit hexagonal unit cell structure as revealed from the XRD pattern. The intensity difference of various diffraction peaks indicates that the growth of the ZnO nanostructure is anisotropic. Various lattice parameters, dislocation density, strain, particle size, and Zn-O bond length were also calculated. The band gap of the synthesized ZnO nanostructures was determined from the UV–vis absorption spectra using Tauc equation and the band gap of the synthesized ZnO varies from 3.34 eV to 3.57 eV by varying the growth duration. Crystallite sizes also decreased with increased growth duration. This variation of size leads to the change in band gap of the nanostructures. Thus, it is possible to tune the band gap of the nanostructures by varying the growth duration. The synthesized ZnO nanostructures exhibit visible photoluminescence due to deep level transitions. A simple weak quantum confinement model has been used to designate the observed photoluminescence emission peak associated with such transitions.

Green Synthesized ZnO Nanoparticles Mediated by Mentha Spicata Extract Induce Plant Systemic Resistance against Tobacco Mosaic Virus

Globally, plant viral infection is one of the most difficult challenges of food security, where considerable losses in crop production occur. Nanoparticles are an effective control agent against numerous plant pathogens. However, there is limited knowledge concerning their effects against viral infection. In the present study, the green synthesis of zinc oxide nanoparticles (ZnO NPs) using aqueous leaf extract of Mentha spicata was achieved. X-ray diffraction patterns confirmed the crystalline nature of the prepared ZnO NPs. Dynamic light scattering and scanning electron microscopy analyses revealed that the resultant ZnO NPs were spherical in shape with a particle size ranged from 11 to 88 nm. Fourier transmission infrared spectroscopy detected different functional groups, capping and stability agents, and showed Zn-O bond within wavenumber of 487 cm−1. Under greenhouse conditions, the antiviral activity of biological synthesized ZnO NPs (100 µg/mL) against Tobacco mosaic virus (TMV) was evaluated. The double foliar application of the prepared ZnO NPs, 24 h before and 24 h after TMV-inoculation, was the most effective treatment that showed a 90.21% reduction of viral accumulation level and disease severity. Additionally, the transcriptional levels of PAL, PR-1 (salicylic acid marker gene), CHS, and POD genes were induced and up-regulated in all ZnO NPs treated plants. Notably, the results exhibited that aqueous extract of Mentha spicata was an effective reducing agent for the green synthesis of ZnO NPs, which showed significant antiviral activity. Finally, the detected protective and curative activity of ZnO NPs against TMV can encourage us to recommend its application for plant viral disease management. To our knowledge, this is the first study describing the antiviral activity of the green synthesized ZnO NPs.

Activation mechanism of zinc ions in cassiterite flotation with benzohydroxamic acid as a collector

The presence of Pb2+ can activate cassiterite flotation, however, its biotoxicity may lead to environmental issues. Therefore, the feasibility of using Zn2+ instead of Pb2+ in cassiterite flotation was investigated in this study. The effects and mechanism of Zn2+ on the floatability of cassiterite were analyzed using benzohydroxamic acid (BHA) as the collector. The results indicated there was a higher recovery of cassiterite in the presence of Zn2+ than in the presence of Pb2+. The maximum recovery of cassiterite in the presence of Zn2+ was 90.54%. This was attributed to an increase in the adsorption quantity of BHA on the cassiterite surface with Zn2+. The maximum growth range was 4.47 × 10-6 mol/g. Further chemistry analysis of the solution indicated that BHA and Zn2+ were mainly present in the form of BHA molecules and Zn(OH)+ at pH 7.5–8.0. X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR) confirmed that Zn(OH)+ reacted with OH– on the cassiterite surface to form a Zn-O bond. Then, this metallic bonding combined with BHA molecules to generate a new type of chelate ring (-Sn-O-Zn-BHA). This structure made BHA attach more firmly on the cassiterite surface, causing a rise in the recovery of cassiterite.

Application of Anomalous X-ray Scattering Method to Liquid Electrolytes Used in a Battery: Local Structural Analysis around a Dilute Metallic Ion.

In liquid electrolytes used for a battery, various metal complexes are formed as a result of ion-solvent and ion-ion interactions, which strongly influence the properties of the electrolyte and thus the performance of the battery. Therefore, the structural characterization of such complexes is of great importance. In this study, the anomalous X-ray scattering (AXS) technique was applied to the potassium hydroxide solution including ∼0.3 mol % zinc, which is widely used in various batteries such as the alkaline battery. In spite of the small amount of the metallic ions, we have successfully extracted a local structure around zinc after careful data analysis. The obtained pair distribution function exhibited not only the short-range correlation corresponding to the Zn-O bond within the zincate anion but also a medium-range correlation above 3.5 Å. The present study demonstrates the capability of the AXS technique to detect local structures around dilute metallic ions in liquid electrolytes, which will largely extend the applicable range of this technique, especially to the field related to batteries.

A comparative study of micro‐ and nano‐ZnO films fabricated by sol‐gel syringe spray method

AbstractSynthesis of ZnO‐based material is becoming more importance as eco‐friendly alternative to traditional production process because of its excellent industrial application. Here, in this paper, we report comparative study of ZnO micro‐ and ZnO nano‐films prepared by low‐cost sol‐gel syringe spray method and then followed by sintering in the muffle furnace at 450°C. The X‐ray diffraction (XRD) pattern confirms hexagonal structure with maximum diffraction intensity from (101) plane. Scanning electron microscope (SEM) images confirm appreciable variation of grain size of micro‐ and nano‐coated films. EDAX spectrum confirms presence of Zn and O elements. An increase in optical band gaps from 3.21 eV for ZnO thick film to 3.40 eV for ZnO nano‐film was observed by UV‐Vis spectroscopy. Fourier transform infrared (FTIR) spectra show a wide absorption band at 1400 cm−1 corresponding to the stretching vibration of zinc and oxygen ZnO bond. The photoluminescence (PL) spectra exhibit strong ultraviolet emission at room temperature, indicating useful material for short‐wave light‐emitting photonic devices. The DC conductivity measurement from two probe method shows semiconductor characteristics.

Structural, electronic and ferroelectric properties of Zn93.75M6.25O (M = Sr, Ba): first-principles calculations

We present a comparative study between the structural, electronic and ferroelectric properties of pristine ZnO, Zn93.75Sr6.25O and Zn93.75Ba6.25O using first-principle calculations and the modern theory of polarization. In the comparison, the Sr-O and Ba-O bonds turn out to be larger than those of the undoped ZnO structure. This produces an increase in the volume of the supercell and a slight decrease in polarization of ZnO. Moreover, the directional nature of the shared charge distribution between the O and Zn ions confirms the presence of covalence in the Zn-O bonds and the maximum polarization was observed in pristine ZnO. The results reported in this study have led to an identification of key factors that govern the ferroelectric properties of doped ZnO.

Significant effect on annealing temperature and enhancement on structural, optical and electrical properties of zinc oxide nanowires

This paper focused on the growth of zinc oxide nanowires on unannealed and annealed indium tin oxide-coated-coated glass substrates on the structural, optical, and electrical properties towards surface acoustic wave (SAW) piezoelectric nanodevices. Zinc oxide nanowires (ZnO NWs) were grown onto Indium Tin Oxide (ITO)-coated glass substrates by a chemical bath deposition method. The growth of ZnO NWs carried onto unannealed and annealed Indium Tin Oxide-coated glass substrates. Substrates were annealed at 400 °C for 90 min at ambient using a horizontal furnace. This work also focused on the effect of annealing condition of ITO-coated glass substrate on nanowires morphology, crystal phase, optical band gap, and electrical properties. Substrate annealing was found to have a significant effect on the nanowires dimension. The nanowire's morphology was obtained by FESEM which the average diameter and length found on unannealed ITO-coated glass substrate were 674.18 ± 26.75 nm and 3.107 ± 0.446 μm. However, the nanowire's average diameter and length on annealed ITO-coated glass substrate were 393.50 ± 27.02 nm and 3.175 ± 0.321 μm. XRD analysis confirmed that ZnO nanowires on substrates with both conditions were able to promote the growth of crystal structure with crystal plane orientation of (1 0 1) and (1 0 0) belongs to hexagonal wurtzite structure. The near-band-edge (NBE) emission of ZnO nanowires obtained by using Photoluminescence which grown on unannealed and annealed ITO-coated glass substrates were observed at 380 nm (3.20 eV) and 384 nm (3.23 eV). FTIR analysis showed that ZnO absorption bands in the region between 450 and 500 cm−1 had arisen from interatomic vibrations due to the stretching of the ZnO bond. The resistivity of ZnO nanowires obtained by using the four-point probe method on unannealed and annealed substrates was found to be 2.0675 × 10−7 Ω cm and 2.0494 × 10−7 Ω cm.