Ahmed A. Ismail (1)
General Background Nanostructured metal oxides have gained increasing attention due to their versatile applications in environmental remediation. Specific Background Zinc oxide-based nanomaterials, particularly when modified with silver, have been widely investigated for their photocatalytic properties under light irradiation. Knowledge Gap However, limitations remain in achieving efficient charge separation and improving photocatalytic performance under practical conditions. Aims This study aims to synthesize Ag-doped ZnO nanostructures and evaluate their structural, optical, and photocatalytic properties for dye degradation applications. Results The synthesized nanocomposites exhibit improved crystallinity, reduced particle size, and enhanced light absorption, leading to higher photocatalytic degradation efficiency compared to pure ZnO. Novelty The incorporation of silver into ZnO nanostructures provides a synergistic effect that optimizes photocatalytic activity through improved electron–hole separation mechanisms. Implications These findings contribute to the development of advanced nanomaterials for sustainable wastewater treatment and offer potential for broader environmental applications.
Keywords: ZnO Nanostructures, Silver Doping, Photocatalysis, Dye Degradation, Nanocomposites
Key Findings Highlights
C.-C. Jiang, Y.-K. Cao, G.-Y. Xiao, R.-F. Zhu, and Y.-P. Lu, “A Review on the Application of Inorganic Nanoparticles in Chemical Surface Coatings on Metallic Substrates,” *RSC Advances*, vol. 7, p. 7531, 2017, doi: 10.1039/c6ra25841g.
S. Tiwari, G. Yadav, S. Sharma, P. Srivastava, and A. Kumar, “Inorganic Nanoparticles: A Review on Method and Material for Fabrication,” *Indian Journal of Pharmacy and Pharmacology*, vol. 9, no. 3, pp. 158–163, 2022, doi: 10.18231/j.ijpp.2022.028.
A. Avellan, J. Yun, B. P. Morais, E. T. Clement, S. M. Rodrigues, and G. V. Lowry, “Critical Review: Role of Inorganic Nanoparticle Properties on Their Foliar Uptake and in Planta Translocation,” *Environmental Science and Technology*, vol. 55, no. 20, pp. 13417–13431, 2021, doi: 10.1021/acs.est.1c00178.
F. Barrino, “Hybrid Organic–Inorganic Materials Prepared by Sol–Gel and Sol–Gel-Coating Method for Biomedical Use: Study and Synthetic Review of Synthesis and Properties,” *Coatings*, vol. 14, no. 4, Art. no. 425, 2024, doi: 10.3390/coatings14040425.
C. V. D. Thi, T. A. Nguyen, Q. M. Pham, and A.-T. Vu, “Enhanced Photocatalytic Performance of Ag-Modified ZnO for the Degradation of Tartrazine Dye,” *Bulletin of Chemical Reaction Engineering and Catalysis*, vol. 20, no. 3, pp. 569–581, 2025, doi: 10.9767/bcrec.20443.
P. Dou, F. Tan, W. Wang, A. Sarreshteh, X. Qiao, X. Qiu, and J. Chen, “One-Step Microwave-Assisted Synthesis of Ag/ZnO/Graphene Nanocomposites with Enhanced Photocatalytic Activity,” *Journal of Photochemistry and Photobiology A: Chemistry*, vol. 302, pp. 17–22, 2015, doi: 10.1016/j.jphotochem.2014.12.012.
C. SenthilKumar, S. Anusuya, and V. Anbazhagan, “A Critical Review on the Fabrication of ZnO Nanoparticles and Their Antidiabetic and Anticancer Activities,” *Next Nanotechnology*, vol. 8, Art. no. 100312, 2025, doi: 10.1016/j.nxnano.2025.100312.
S. Vikal et al., “Structural, Optical and Antimicrobial Properties of Pure and Ag-Doped ZnO Nanostructures,” *Journal of Semiconductors*, vol. 43, no. 3, Art. no. 032802, 2022, doi: 10.1088/1674-4926/43/3/032802.
A. Ziashahabi et al., “The Effect of Silver Oxidation on the Photocatalytic Activity of Ag/ZnO Hybrid Plasmonic/Metal-Oxide Nanostructures Under Visible Light and in the Dark,” *Scientific Reports*, vol. 9, Art. no. 11839, 2019, doi: 10.1038/s41598-019-48075-7.
O. F. Farag, A. S. A. El-Sayed, and E. M. Abdel Fattah, “One Step Synthesis of Ag Nanoparticles Incorporated PVA Nanocomposite via Plasma Reduction Route,” *Scientific Reports*, vol. 15, Art. no. 20103, 2025, doi: 10.1038/s41598-025-03700-6.
T. Mahardik et al., “Rapid and Low Temperature Synthesis of Ag Nanoparticles on the ZnO Nanorods for Photocatalytic Activity Improvement,” *Results in Physics*, vol. 13, Art. no. 102209, 2019, doi: 10.1016/j.rinp.2019.102209.
M. T. Noman, M. Petru, J. Militký, M. Azeem, and M. A. Ashraf, “One-Pot Sonochemical Synthesis of ZnO Nanoparticles for Photocatalytic Applications, Modelling and Optimization,” *Materials*, vol. 13, Art. no. 14, 2020, doi: 10.3390/ma13010014.
W.-B. Zhang, J.-J. Xue, X.-A. Yang, and S.-B. Wang, “Determination of Inorganic and Total Mercury in Seafood Samples by a New Ultrasound-Assisted Extraction System and Cold Vapor Atomic Fluorescence Spectrometry,” *Journal of Analytical Atomic Spectrometry*, pp. 2023–2029, 2011, doi: 10.1039/C1JA10145E.
K. Mondal, M. Islam, S. Singh, and A. Sharma, “Fabrication of High Surface Area Microporous ZnO from ZnO/Carbon Sacrificial Composite Monolith Template,” *Micromachines*, vol. 13, Art. no. 335, 2022, doi: 10.3390/mi13020335.
A. Abedini and M. Najaf, “Size and Morphology Controlled Synthesis of the Silver (II) Oxide Particles,” *Micro and Nano Letters*, vol. 14, no. 9, pp. 1013–1018, 2019, doi: 10.1049/mnl.2018.5809.
Y. Zidane et al., “Green Synthesis of Multifunctional MgO@AgO/Ag2O Nanocomposite for Photocatalytic Degradation of Methylene Blue and Toluidine Blue,” *Frontiers in Chemistry*, vol. 10, Art. no. 1083596, 2022, doi: 10.3389/fchem.2022.1083596.
S. Sumari, R. Achmad, and S. Sumarno, “Effects of Ultrasound on the Morphology, Particle Size, Crystallinity, and Crystallite Size of Cellulose,” *Scientific Study and Research: Chemistry and Chemical Engineering*, vol. 14, pp. 229–239, 2013.
Samriti et al., “Insight into the Sunlight-Driven Photocatalytic Activity of ZnO and ZnO/Ag Hybrid Nanostructures,” *Next Materials*, vol. 8, Art. no. 100733, 2025, doi: 10.1016/j.nxmate.2025.100733.
E. S. Hadi and K. K. Jasim, “Responsive UV-Light Photocatalytic of Ag/ZnO Nanocomposites for Removal of Brilliant Blue Dye: As a Model for Advanced Chemical Studies,” *Advanced Journal of Chemistry, Section A*, vol. 8, no. 3, pp. 604–614, 2025, doi: 10.48309/ajca.2025.474706.1654.
V.-P. Vu et al., “Visible Light-Driven GO/Ag-ZnO Ternary Composites for Enhanced Photocatalytic Degradation of Amoxicillin and Their Antibacterial Potential,” *Next Materials*, vol. 8, Art. no. 100544, 2025, doi: 10.1016/j.nxmate.2025.100544.
C. V. Dao Thi, T. A. Nguyen, T. A. Nguyen Thi, and A.-T. Vu, “Synthesis of g-C3N4-Based Nanocomposites with Low Au Loading for Efficient Methylene Blue Degradation,” *Nanotechnology*, vol. 36, no. 25, Art. no. 255703, 2025, doi: 10.1088/1361-6528/ade0c5.
T. Rodríguez-Flores et al., “Comparison of Photocatalytic Performance of Sonochemically Synthesized ZnO with Different Capping Agents,” *ACS Omega*, vol. 10, no. 28, pp. 30181–30193, 2025, doi: 10.1021/acsomega.5c00929.