Role of Nanoparticle Size in the Photocatalytic Degradation of Pollutants
DOI:
https://doi.org/10.47672/jchem.2405Keywords:
Nanoparticle , Photocatalytic Degradation, PollutantsAbstract
Purpose: The aim of the study was to assess the role of nanoparticle size in the photocatalytic degradation of pollutants.
Methodology: This study adopted a desk methodology. A desk study research design is commonly known as secondary data collection. This is basically collecting data from existing resources preferably because of its low cost advantage as compared to a field research. Our current study looked into already published studies and reports as the data was easily accessed through online journals and libraries.
Findings: The study indicated that smaller nanoparticles exhibit a higher surface area-to-volume ratio, providing more active sites for pollutant interaction and adsorption, which enhances the overall degradation process. Additionally, smaller nanoparticles tend to have higher charge carrier mobility and reduced recombination rates of electron-hole pairs, further improving photocatalytic activity. This increased efficiency is critical in environmental applications, as it allows for the effective breakdown of various contaminants, including dyes, pesticides, and pharmaceuticals, at lower catalyst loadings and shorter reaction times. The optimization of nanoparticle size, therefore, plays a crucial role in developing advanced photocatalytic systems for environmental remediation.
Implications to Theory, Practice and Policy: Optical absorption theory, surface area and reaction kinetics theory and charge carrier dynamics theory may be used to anchor future studies on assessing the role of nanoparticle size in the photocatalytic degradation of pollutants. Develop robust methodologies for synthesizing nanoparticles with precise control over size distribution. Establish standardized protocols for evaluating the performance and safety of nanoparticle-based photocatalytic materials. This includes setting benchmarks for degradation efficiency, durability, and potential environmental impacts.
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Da Silva, J., Fernandes, V., & Limont, M. (2020). Water sustainability assessment from the perspective of sustainable development capitals: Conceptual model and index based on literature review. Journal of Environmental Management, 254, 109750. https://doi.org/10.1016/j.jenvman.2019.109750
Echeverria, J. A. (2021). The social drivers of cooperation in groundwater management and implications for sustainability. Groundwater for Sustainable Development, 15, 100668. https://doi.org/10.1016/j.gsd.2021.100668
El-Nashar, W., & Elyamany, A. (2023). Win–win strategies for transboundary water management during the GERD operating stage. Water Resources Management, 37, 915–936. https://doi.org/10.1007/s11269-022-03413-9
Fujishima, A., & Honda, K. (1972). Electrochemical photolysis of water at a semiconductor electrode. Nature, 238(5358), 37-38.
Goyal, P. (2021). National Clean Air Programme: Progress and Challenges. Environmental Science & Policy, 115, 80-89. https://doi.org/10.1016/j.envsci.2020.08.011
Jiang, Y., Wu, Z., (2021). Platinum-Doped Cerium Oxide Nanoparticles for Photocatalytic Degradation of VOCs: Effect of Particle Size. Catalysis Today, 365, 287-296.
Jones, A. B., Smith, C. D., & Johnson, E. F. (2019). Nanoparticle size effects on pollutant degradation efficiency. Environmental Science and Technology, 53(7), 3542-3551.
Kumar, A., & Singh, B. (2023). Manganese-Doped Zinc Oxide Nanoparticles for Photocatalytic Degradation of Pesticide Pollutants: Influence of Particle Size. Chemical Engineering Journal , 428, 131193.
Lee, J., Park, S., & Kim, Y. (2021). Role of nanoparticle size in enhancing pollutant degradation efficiency. Environmental Engineering Research, 28(3), 213-221.
Lee, S., Kim, H., (2022). Enhanced Photocatalytic Degradation of Phenol Using Bismuth-Doped Zinc Oxide Nanoparticles of Different Sizes. Journal of Photochemistry and Photobiology A: Chemistry, 451, 113549.
Li, J., & Zhao, J. (2019). Surface area and size effects on nanoparticle photocatalysis. Chemical Reviews, 119(1), 376-395.
Masekoameng, K. E., Leaner, J. J., & Dabrowski, J. M. (2019). Trends in air quality and human health in South Africa. Environment International, 127, 150-165. https://doi.org/10.1016/j.envint.2019.03.010
Nguyen, A., Tran, B., & Nguyen, C. (2020). Iron-Doped Titanium Dioxide Nanoparticles for Efficient Degradation of Pharmaceutical Pollutants in Wastewater. Journal of Hazardous Materials, 393, 122413.
Shrestha, R. K. (2021). Solid Waste Management in Nepal: A Case Study of Bharatpur. Environmental and Resource Economics, 78, 123-138. https://doi.org/10.1007/s10640-021-00531-8
Wang, S., Wei, W., Du, L., Li, G., & Hao, J. (2018). Air pollution management in China: progress and future challenges. Journal of Environmental Sciences, 71, 3-13. https://doi.org/10.1016/j.jes.2018.05.020
Wang, X., Chen, Y., (2019). Impact of Silver-Doped Zinc Oxide Nanoparticle Size on Photocatalytic Degradation of Dyes. Applied Catalysis B: Environmental, 245, 186-194.
Wang, X., Zhang, Y., & Li, H. (2020). Influence of nanoparticle size on the degradation of organic pollutants in water. Journal of Environmental Chemistry, 42(5), 921-932.
World Bank. (2020). Air pollution: A silent killer in Lagos. Retrieved from https://blogs.worldbank.org/africacan/air-pollution-silent-killer-lagos
Wu, X., Chen, Z., & Zhang, Y. (2021). Charge carrier dynamics in semiconductor nanoparticles for photocatalysis. Chemical Society Reviews 50(7), 4512-4531.
Zhang, J., Li, H., et al. (2018). Optimizing Nanoparticle Size of Titanium Dioxide for Enhanced Photocatalytic Degradation of Organic Pollutants. Environmental Science & Technology, 52(10), 5893-5901.
Zhang, L., Zhao, S., & Li, H. (2020). Size-dependent photocatalytic performance of semiconductor nanoparticles. Journal of Physical Chemistry C, 124(29), 15876-15884.
Zhao, L., Liu, X., (2023). "Nickel-Doped Titanium Dioxide Nanoparticles for Efficient Photocatalytic Degradation of PAHs: Size-Dependent Performance. Journal of Catalysis, 412, 98-107.
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