Eco-Friendly Fabrication and Characterization of ZnO Nanoparticles, PANI, and ZnO-PANI Nanocomposites
DOI:
https://doi.org/10.56919/usci.2543.044Keywords:
PANI/ZnO Nanocomposites, Nanoparticles, Photocatalyst, Organic contaminants, Wastewater treatment, CharacterizationAbstract
The increasing presence of organic pollutants, such as dyes and pharmaceutical residues, in water systems poses significant environmental and health risks, requiring the development of effective, sustainable cleanup technologies. In this study, we report the synthesis and detailed characterization of polyaniline (PANI), Zinc oxide (ZnO) nanoparticles, and ZnO/PANI nanocomposites as promising materials for environmental cleanup. The nanocomposites were produced via chemical oxidative polymerization, embedding ZnO nanoparticles within a PANI matrix to enhance their photocatalytic activity. Advanced techniques such as Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), X- ray Diffraction (XRD), Energy Dispersive X- ray Spectroscopy (EDX), and Brunauer–Emmett–Teller (BET) for surface area analysis were used to explore the structural, morphological, elemental, and surface properties of the individual components and the composite. TEM images showed uniform dispersion of ZnO nanoparticles within the PANI matrix and strong interfacial contact, aiding efficient charge separation. XRD confirmed the formation of a new crystalline phase in the composite and a significant decrease in crystallite size, indicating successful nanocomposite creation. EDX verified the elemental composition and even distribution of Zn, O, C, and N, while BET measurements indicated a notable increase in surface area (235.5 m²/g) and optimal pore size (~2.2-2.1 nm) in the nanocomposite compared to the individual components. This research introduces ZnO/PANI nanocomposites as a powerful, scalable material for advanced water treatment, providing a cost-effective and eco-friendly solution for degrading stubborn organic contaminants.
References
Abdullah, F. H., Abu Bakar, N. H. H., & Abu Bakar, M. (2020). Low temperature biosynthesis of crystalline zinc oxide nanoparticles from Musa acuminata peel extract for visible-light degradation of methylene blue. Optik, 206, 164279. DOI: https://doi.org/10.1016/j.ijleo.2020.164279
Abdullah, F. H., Abu Bakar, N. H. H., & Abu Bakar, M. (2021). Comparative study of chemically synthesized and low temperature bio-inspired Musa acuminata peel extract mediated zinc oxide nanoparticles for enhanced visible-photocatalytic degradation of organic contaminants in wastewater treatment. Journal of Hazardous Materials, 406, 124779. DOI: https://doi.org/10.1016/j.jhazmat.2020.124779
Adamu, M. A., Mustafa, M. K., & Ruslan, N. N. (2015). Mophology of Polyaniline nanotube with various level of Fe3O4 nanoparticles and their electrical conductivities by Ultrasonic dispersion method. Journal of Engineering and Applied Sciences, 11(16), 9725-9729.
Ajayan, A. S., & Hebsur, N. S. (2020). Green synthesis of zinc oxide nanoparticles using neem (Azadirachta indica) and tulasi (Ocimum tenuiflorum) leaf extract and their characterization. International Journal of Current Microbiology and Applied Sciences, 9(2), 277–285. DOI: https://doi.org/10.20546/ijcmas.2020.902.035
Aliyu, A., Umar, S., Abdelmalik, A. A., Abdulsalam, H., Maidawa, S. S., & Suleiman, S. A. (2024). Effect of silica and alumina nanoparticles addition on the dielectric and rheological properties of shea oil methyl ester. UMYU Scientifica, 3(2), 70–75. DOI: https://doi.org/10.56919/usci.2432.006
Belay, T., Worku, L. A., Bachheti, R. K., Bachheti, A., & Husen, A. (2023). Nanomaterials: Introduction, synthesis, characterization, and applications. In A. Husen (Ed.), Advances in Smart Nanomaterials and Their Applications (pp. 1–21). Academic Press. DOI: https://doi.org/10.1016/B978-0-323-99546-7.00027-6
Channa, G. M., Iturbe-Ek, J., Sustaita, A. O., Melo-Maximo, D. V., Bhatti, A., Esparza-Sanchez, J., Navarro-Lopez, D. E., Lopez-Mena, E. R., Sanchez-Lopez, A. L., & Lozano, L. M. (2025). Eco-friendly synthesis of ZnO nanoparticles from natural agave, chiku, and soursop extracts: A sustainable approach to antibacterial applications. Crystals, 15(5), 470. DOI: https://doi.org/10.3390/cryst15050470
Chen, D., Cheng, Y., Zhou, N., Chen, P., Wang, Y., Li, K., Huo, S., Cheng, P., Peng, P., Zhang, R., Wang, L., Liu, H., Liu, Y., & Ruan, R. (2020). Photocatalytic degradation of organic pollutants using TiO2-based photocatalysts: A review. Journal of Cleaner Production, 268, 121725. DOI: https://doi.org/10.1016/j.jclepro.2020.121725
Danladi, E., Onimisi, M. Y., Laah, R. M., & Ikhioya, I. L. (2022). High performance dye sensitized solar cells by plasmonic enhancement of silver nanoparticles in ZnO photoelectrode with betanin pigment. African Scientific Reports, 1(1), 1–15. DOI: https://doi.org/10.46481/asr.2022.1.1.3
Eker, F., Duman, H., Akdaşçi, E., Bolat, E., Sarıtaş, S., Karav, S., & Witkowska, A. M. (2024). A comprehensive review of nanoparticles: From classification to application and toxicity. Molecules, 29(15), 3482. DOI: https://doi.org/10.3390/molecules29153482
Eskizeybek, V., Sari, F., Gülce, H., Gülce, A., & Avci, A. (2012). Preparation of the new polyaniline/ZnO nanocomposite and its photocatalytic activity for degradation of methylene blue and malachite green dyes under UV and natural sun lights irradiations. Applied Catalysis B: Environmental, 119–120, 197–206. DOI: https://doi.org/10.1016/j.apcatb.2012.02.034
Gilja, V., Vrban, I., Mandić, V., Žic, M., & Hrnjak-Murgić, Z. (2018). Preparation of a PANI/ZnO composite for efficient photocatalytic degradation of acid blue. Polymers, 10(9), 940. DOI: https://doi.org/10.3390/polym10090940
He, X., Yang, Y., Li, Y., Chen, J., Yang, S., Liu, R., & Xu, Z. (2022). Effects of structure and surface properties on the performance of ZnO towards photocatalytic degradation of methylene blue. Applied Surface Science, 599, 153898. DOI: https://doi.org/10.1016/j.apsusc.2022.153898
Jadoun, S., Yáñez, J., Mansilla, H. D., Riaz, U., & Chauhan, N. P. S. (2022). Conducting polymers/zinc oxide-based photocatalysts for environmental remediation: A review. Environmental Chemistry Letters, 20(3), 2063–2083. DOI: https://doi.org/10.1007/s10311-022-01398-w
Jarad, A. N., Ibrahim, K., & Ahmed, N. M. (2016). Synthesis and characterization thin films of conductive polymer (PANI) for optoelectronic device application. AIP Conference Proceedings, 1733(1), 020010. DOI: https://doi.org/10.1063/1.4948838
Kasak, P. (2024). Degradation and photocatalytic properties of nanocomposites. Nanomaterials, 14(13), 1065. DOI: https://doi.org/10.3390/nano14131065
Kumar, H., Luthra, M., Punia, M., Yadav, A., Kumari, R., Sharma, R., Tundwal, A., Kumar, G., & Kaur, P. (2023). PANI encapsulated α-MnO2 nanocomposites as photocatalytic, antibacterial and anticorrosive agents: Sustainable experimental and theoretical studies. Results in Engineering, 19, 101250. DOI: https://doi.org/10.1016/j.rineng.2023.101250
Kumar, S., Awasthi, K., & Mishra, Y. K. (2021). Synthesis of ZnO nanostructures. In K. Awasthi (Ed.), Nanostructured Zinc Oxide: Synthesis, Properties and Applications (pp. 93–116). Elsevier. DOI: https://doi.org/10.1016/B978-0-12-818900-9.00016-4
Liu, B., Zhao, X., Terashima, C., Fujishima, A., & Nakata, K. (2014). Thermodynamic and kinetic analysis of heterogeneous photocatalysis for semiconductor systems. Physical Chemistry Chemical Physics, 16(19), 8751–8760. DOI: https://doi.org/10.1039/c3cp55317e
Mahmoud, A. A., Ali, S. B., Ajiya, D. A. & Muhammad, M. (2025). Photodegradation of some Antibiotics and Industrial Dye by Visible Light of Highly Active Synthesized PAni/TiO2 Nanocomposite Photocatalyst. Journal of Bio & Geo Material and Energy, 5(1), 28-38. DOI: https://doi.org/10.22437/j-bigme.v5i1.42002
Mahmoud, A. A., Mustafa, M. K., Ruslan, N. N., Aliyu, J., Garba, I. H. & Hassan, U. F. (2022). Amperometric immunosensor based on the conducting layer of PAni/Fe3O4 nanocomposites for the detection of Aβ42. Science Forum Journal of Pure and Applied Sciences. 22 326 - 335. DOI: https://doi.org/10.5455/sf.99872
Mehto, V. R., Mehto, A., Gupta, D. K., & Pandey, R. K. (2016). Synthesis and characterization of PANI/ZnO nanocomposites. Journal of the Chinese Chemical Society, 63(11), 935–946. DOI: https://doi.org/10.1002/jccs.201600069
Mostafaei, A., & Zolriasatein, A. (2012). Synthesis and characterization of conducting polyaniline nanocomposites containing ZnO nanorods. Progress in Natural Science: Materials International, 22(4), 273–280. DOI: https://doi.org/10.1016/j.pnsc.2012.07.002
Mourdikoudis, S., Pallares, R. M., & Thanh, N. T. K. (2018). Characterization techniques for nanoparticles: Comparison and complementarity upon studying nanoparticle properties. Nanoscale, 10(27), 12871–12934. DOI: https://doi.org/10.1039/C8NR02278J
Nabi, S. A., Shahadat, M., Bushra, R., Oves, M., & Ahmed, F. (2011). Synthesis and characterization of polyanilineZr(IV)sulphosalicylate composite and its applications (1) electrical conductivity, and (2) antimicrobial activity studies. Chemical Engineering Journal, 173(3), 706–714. DOI: https://doi.org/10.1016/j.cej.2011.07.081
Nam, C. T., Yang, W. D., & Duc, L. M. (2013). Solvothermal synthesis of TiO2 photocatalysts in ketone solvents with low boiling points. Journal of Nanomaterials, 2013(1), 627385. DOI: https://doi.org/10.1155/2013/627385
Navidpour, A. H., Ahmed, M. B., & Zhou, J. L. (2024). Photocatalytic degradation of pharmaceutical residues from water and sewage effluent using different TiO2 nanomaterials. Nanomaterials, 14(2), 135. DOI: https://doi.org/10.3390/nano14020135
Paul, R. K., & Ahmaruzzaman, M. (2025). Advanced photocatalytic degradation of POPs and other contaminants: A comprehensive review on nanocomposites and heterojunctions. RSC Advances, 15(38), 31313–31359. DOI: https://doi.org/10.1039/D5RA04336K
Pluchery, O., Prado, Y., & Watkins, W. (2023). A complete explanation of the plasmonic colours of gold nanoparticles and of the bichromatic effect. Journal of Materials Chemistry C, 11(45), 15824–15832. DOI: https://doi.org/10.1039/D3TC02669H
Qu, B., Xiao, Z., & Luo, Y. (2025). Sustainable nanotechnology for food preservation: Synthesis, mechanisms, and applications of zinc oxide nanoparticles. Journal of Agriculture and Food Research, 19, 101743. DOI: https://doi.org/10.1016/j.jafr.2025.101743
Rahman, F., Majed Patwary, M. A., Bakar Siddique, M. A., Bashar, M. S., Haque, M. A., Akter, B., Rashid, R., Haque, M. A., & Royhan Uddin, A. K. M. (2022). Green synthesis of zinc oxide nanoparticles using Cocos nucifera leaf extract: Characterization, antimicrobial, antioxidant and photocatalytic activity. Royal Society Open Science, 9(11), 220858. DOI: https://doi.org/10.1098/rsos.220858
Salata, O. V. (2004). Applications of nanoparticles in biology and medicine. Journal of Nanobiotechnology, 2(1), 3. DOI: https://doi.org/10.1186/1477-3155-2-3
Sharma, S., Singh, S., & Khare, N. (2016). Enhanced photosensitization of zinc oxide nanorods using polyaniline for efficient photocatalytic and photoelectrochemical water splitting. International Journal of Hydrogen Energy, 41(46), 21088–21098. DOI: https://doi.org/10.1016/j.ijhydene.2016.08.131
Srimeena, S., & Nithya, S. (2019). Green synthesis and characterization of zinc oxide nanoparticles using Cassia articulate flower extract. International Journal of Advanced Research, 7(12), 674–677. DOI: https://doi.org/10.21474/IJAR01/10196
Tababouchet, M. Y., Sakri, A., Bouremel, C., & Boutarfaia, A. (2023). Synthesis of polyaniline-zinc oxide composites: Assessment of structural, morphological, and electrical properties. Annales de Chimie: Science des Matériaux, 47(6), 399–404. DOI: https://doi.org/10.18280/acsm.470606
Turkten, N., Karatas, Y., & Bekbolet, M. (2021). Preparation of PANI modified ZnO composites via different methods: Structural, morphological and photocatalytic properties. Water, 13(8), 1025. DOI: https://doi.org/10.3390/w13081025
Wang, B., Biesold, G. M., Zhang, M., & Lin, Z. (2021). Amorphous inorganic semiconductors for the development of solar cell, photoelectrocatalytic and photocatalytic applications. Chemical Society Reviews, 50(12), 6914–6949. DOI: https://doi.org/10.1039/D0CS01134G
Wang, Z., Liu, J., Wang, Y., Sun, H., & Yu, H. (2025). The influence of interface morphology on the interfacial bonding behavior and mechanical properties of TC4/TA2 composite plates. Materials Science and Engineering: A, 936, 148401. DOI: https://doi.org/10.1016/j.msea.2025.148401
Yahaya, A. A., Umar, A. B., Mamuda, S., & Ahmad, A. M. (2022). Characterization of the structural and optical properties of copper oxide for use in solar cells using screen printing method. UMYU Scientifica, 1(1), 184–193. DOI: https://doi.org/10.56919/usci.1122.024
Zhanfeng, Q., Guancheng, L., & Xiuli, G. (2025). Multi-element synergy in photocatalytic materials integrated mechanism-design-preparation strategies. Materials Research Express, 12(6). DOI: https://doi.org/10.1088/2053-1591/ade037
Zhou, Y. H., Shen, Y. Y., Chen, Y., & Wang, M. H. (2025). Preparation of ZnO/PANI composite by in situ polymerization approach and its varistor properties. Journal of Materials Science: Materials in Electronics, 36(16), 965. DOI: https://doi.org/10.1007/s10854-025-15020-6
Zhu, C., & Wang, X. (2025). Nanomaterial ZnO synthesis and its photocatalytic applications: A review. Nanomaterials, 15(9), 682. DOI: https://doi.org/10.3390/nano15090682
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Copyright (c) 2025 Sulaiman Babayo Ali, Auwal Adamu Mahmoud, Dahiru Adamu Ajiya, Istifanus Yarkasuwa Chindo, Bashir Musa (Author)
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