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ئەز   Awaz Adil Kareem

Assistant Lecturer

Specialties

Assistant Lecturer

awaz.kareem@uoz.edu.krd
0750000000008
iraq , zakho
0
Awards
5
Published Journal Articles
1
Thesis
3
Training Course

0
Book Chapter
1
Conference
2
Presentation
2
Workshop

Membership


2022

2022-05-08,2022-06-30
Member

Exam Committee at Faculty of Science University of Zakho

2021

2021-12-22,2022-02-01
Member

Exam Committee at Faculty of Science University of Zakho

2021-09-05,2022-06-07
Member

Membership in student sheet at faculty of science university of Zakho

2021-05-15,current
Member

Exam Committee at Faculty of Science University of Zakho

Academic Title

Assistant Lecturer

2021-04-29

Assistance Researcher

2014-07-13

Published Journal Articles

Applied Physics A (Materials Science & Processing (Issue : 720) (Volume : 131)
Green synthesis of ZnO nanoparticles: effect of pH on morphology and photocatalytic degradation efficiency

This research used an aqueous leaf extract of Allium Caliphalum Wendelbow as an eco-friendly stabilizing... See more

This research used an aqueous leaf extract of Allium Caliphalum Wendelbow as an eco-friendly stabilizing and capping agent for the production of ZnO NPs. Different characterization techniques, including SEM, UV-Vis spectroscopy, FTIR, XRD, and EDX, were employed to analyze the morphology, structural, optical, and chemical properties of the ZnO nanoparticles. The SEM analysis revealed that the average particle sizes ranged between 30 and 72 nm depending on pH, but the crystallite sizes obtained from XRD ranged from 15 to 24 nm. UV-Vis spectroscopy indicated a bandgap energy range of 3.14 to 3.25 eV, dependent on the pH of the reaction mixture. The FTIR spectra confirmed the existence of functional groups from the plant extract that facilitate the reduction and stabilization process. The photocatalytic efficacy of ZnO NPs was assessed by decomposing methyl orange dye under ultraviolet irradiation. The nanoparticles produced at an ideal pH of 8 demonstrated the greatest degrading efficiency of 74% in 140 min, owing to their reduced size, enhanced crystallinity, and advantageous bandgap energy (~ 3.25 eV). The findings underscore the substantial impact of pH on the physicochemical and photocatalytic characteristics of biosynthesized ZnO NPs, providing a sustainable method for wastewater treatment applications

 2025-08
Applied Physics A (Materials Science & Processing (Issue : 720) (Volume : 131)
Green synthesis of ZnO nanoparticles: effect of pH on morphology and photocatalytic degradation efficiency

This research used an aqueous leaf extract of Allium Caliphalum Wendelbow as an eco-friendly stabilizing... See more

This research used an aqueous leaf extract of Allium Caliphalum Wendelbow as an eco-friendly stabilizing and capping agent for the production of ZnO NPs. Different characterization techniques, including SEM, UV-Vis spectroscopy, FTIR, XRD, and EDX, were employed to analyze the morphology, structural, optical, and chemical properties of the ZnO nanoparticles. The SEM analysis revealed that the average particle sizes ranged between 30 and 72 nm depending on pH, but the crystallite sizes obtained from XRD ranged from 15 to 24 nm. UV-Vis spectroscopy indicated a bandgap energy range of 3.14 to 3.25 eV, dependent on the pH of the reaction mixture. The FTIR spectra confirmed the existence of functional groups from the plant extract that facilitate the reduction and stabilization process. The photocatalytic efficacy of ZnO NPs was assessed by decomposing methyl orange dye under ultraviolet irradiation. The nanoparticles produced at an ideal pH of 8 demonstrated the greatest degrading efficiency of 74% in 140 min, owing to their reduced size, enhanced crystallinity, and advantageous bandgap energy (~ 3.25 eV). The findings underscore the substantial impact of pH on the physicochemical and photocatalytic characteristics of biosynthesized ZnO NPs, providing a sustainable method for wastewater treatment applications.

 2025-08
Materials Technology Advanced Performance Materials (Issue : 2443205) (Volume : 40)
Influence of annealing temperature of seed layer on the structural and optical properties of ZnO nanorods synthesized by SILAR and CBD techniques

In this study, zinc oxide nanorods were synthesized using chemical bath deposition with a ZnO... See more

In this study, zinc oxide nanorods were synthesized using chemical bath deposition with a ZnO seed layer on glass substrates via successive ionic layer adsorption and reaction. The effect of annealing temperature on the seed layer was investigated using various characterization tech- niques. Results show that annealing temperature significantly influenced the morphology and quality of ZnO NRs. As the temperature increased from 0°C to 500°C, the nanorod length grew from 591 to 1008 nm. Optimal conditions were found at 450°C, with a growth rate of 4.2 nm/min and an aspect ratio of 11. The crystalline size ranged from 10.56 to 52.93 nm, confirmed by XRD analysis, showing the hexagonal wurtzite structure. The bandgap energy varied from 3.221 eV to 3.2656 eV, reflecting the impact of annealing on optical properties. Optical transmittance was highest at 0°C, decreasing from 57% to 13% as the annealing temperature increased.

 2024-12
Science Journal of the University of Zakho (Issue : 112) (Volume : 11)
INVESTIGATING THE IMPACT OF GROWTH TEMPERATURES ON THE ZNO NANORODS PROPERTIES GROWN WITH SIMPLEST SPRAY TECHNIQUE

The simplest chemical spray approach has been used to grow the zinc oxide (ZnO) nanorods... See more

The simplest chemical spray approach has been used to grow the zinc oxide (ZnO) nanorods (NRs). For spraying, a basic perfume automizer was employed. Additionally, utilizing a variety of characterization techniques, the effects of various growth temperatures on the ZnO NRs properties were looked into and evaluated. The results of the investigation demonstrated that the growing temperature significantly affects all-characteristics properties of the ZnO NRs fabricated using the most straightforward spray approach. At various growth temperatures, the average diameters (size) and average crystalline sizes along with (002) of grown ZnO NRs were in the ranges of (47.89-51.29) nm and (44.128-52.565) nm, respectively. The hexagonal wurtzite plane was the optimum direction for ZnO NRs to be oriented, and as growth temperatures are raised. The absorption edge changed toward longer wavelengths and as growth temperature increased, the average absorbance also increased. The optical analysis reveals that the direct Eg. of the produced ZnO NRs lies in the (3.182-3.250) eV range.

 2023-02
Journal of University of Duhok (Issue : 2020) (Volume : 23)
THRESHOLD PUMP POWER AND STABILTY ZONE STUDY OF A CW Ti:Sa LASER BASED ON USING TWO DIFFERENT DIELECTRIC BROADBAND HIGH REFLECTIVE MIRRORS

...

 2020-09

Thesis

2020-12-17
A Study of the threshold pump power and stability zone of a build up CW Ti:Sa Laser using two different dielectric broadband high reflective mirrors

.

 2020

Conference

5th International Conference on Advance Science & Engineering (ICOASE2025)
 2025-09
Laser Ablation Technique and Their Parameters Effect on Nanoparticles Production: A Review

Laser ablation was a flexible and accurate way of producing nanoparticles, allowing for the tailoring of the entire range of properties of the particles for different applications. This process involves irradiation of the material to... See more

Laser ablation was a flexible and accurate way of producing nanoparticles, allowing for the tailoring of the entire range of properties of the particles for different applications. This process involves irradiation of the material to be ablated by a laser causing a plasma plume and a collection of particles to be ejected and which merge to form nanoparticles. The novelty of the process is based on the precise management of shape, size and dimension of nanoparticles (consisting of metals, semiconductors, oxides, etc) that are being created. Another advantage of removal lasers is their ability to work with many types of target materials, and so the fabrication of alternative sets of nanoparticles with different capacity is also possible. The inherent accuracy of this method comes from the possibility to fabricate cut pure nanoparticles. This nanoparticle property flexibility is enabled by the possibilities of precise control of the laser parameters (e.g., energy, intensity, frequency). As long as a practical and reliable strategy can be used to structure at the nanoscale, however, laser ablation remains a very efficient method of nanoparticle fusion.

Presentation

University of Zakho/ Department of Physics
2025-05
Chemical Bath Deposition

Production of nanoparticle and nanomaterials.

 2025
Faculty of science, University of Zakho
2022-04
A Study of the Threshold Pump Power and Stability Zone of a Build up CW Ti:Sa Laser using two Different Dielectric Broadband High Reflective Cavity Mirrors

Ti:Sapphire femtosecond pulse

 2022

Workshop

University of Zakho
2025-05
Building Capacities in Nanotechnology

Overview of nanoscience , nanotechnology and nanomaterials. Production of nanoparticles and characterization tools.

 2025
faculty of science, physics department , University of zakho
2022-04
Synthesis and fabrication of nanomaterials

CW Ti:sa laser

 2022

Training Course

2023-02-20,2023-02-20
IELTS

Exam

 2023
2017-01-03,2017-03-09
IELTS

training course

 2017
2017-01-03,2017-03-09
IELTS training course

training course

 2017