Microplastics are persistent anthropogenic pollutants that have become a global concern due to their widespread distribution and unfamiliar threat to the environment and living organisms. Conventional technologies are unable to fully decompose and mineralize plastic waste. Therefore, there is a need to develop an environmentally friendly, innovative and sustainable photocatalytic process that can destroy these wastes with much less energy and chemical consumption. In photocatalysis, various nanomaterials based on wide energy band gap semiconductors such as TiO2 and ZnO are used for the conversion of plastic contaminants into environmentally friendly compounds. In this work, the removal of plastic fragments by photocatalytic reactions using newly developed photocatalytic composites and the mechanism of photocatalytic degradation of microplastics are systematically investigated. In these degradation processes, sunlight or an artificial light source is used to activate the photocatalyst in the presence of oxygen.
References
[1]
Sophie, R.W., Pacome, G.K.K., Aminata, G., Kelety, C., Barthélemy, T., Vinciale, A.A.W., et al. (2024) Impact of Plastic Waste on the Human Health in Low-Income Countries: A Systematic Review. Journal of Environmental Protection, 15, 572-595. https://doi.org/10.4236/jep.2024.155033
[2]
Lamb, J.B., Willis, B.L., Fiorenza, E.A., Couch, C.S., Howard, R., Rader, D.N., et al. (2018) Plastic Waste Associated with Disease on Coral Reefs. Science, 359, 460-462. https://doi.org/10.1126/science.aar3320
[3]
Isobe, A., Azuma, T., Cordova, M.R., Cózar, A., Galgani, F., Hagita, R., et al. (2021) A Multilevel Dataset of Microplastic Abundance in the World’s Upper Ocean and the Laurentian Great Lakes. Microplastics and Nanoplastics, 1, Article No. 16. https://doi.org/10.1186/s43591-021-00013-z
[4]
Murakami, T. and Tsuru, W. (2023) Research on Capture Performance of an Induction Type Microplastics Recovery Device. Open Journal of Fluid Dynamics, 13, 81-91. https://doi.org/10.4236/ojfd.2023.132006
[5]
Koelmans, A.A., Besseling, E. and Shim, W.J. (2015) Nanoplastics in the Aquatic Environment. Critical Review. In: Bergmann, M., Gutow, L. and Klages, M., Eds., MarineAnthropogenicLitter, Springer International Publishing, 325-340. https://doi.org/10.1007/978-3-319-16510-3_12
[6]
Nguyen, B., Claveau-Mallet, D., Hernandez, L.M., Xu, E.G., Farner, J.M. and Tufenkji, N. (2019) Separation and Analysis of Microplastics and Nanoplastics in Complex Environmental Samples. Accounts of Chemical Research, 52, 858-866. https://doi.org/10.1021/acs.accounts.8b00602
[7]
Cooper, I. (2007) Plastics and Chemical Migration into Food. In: Barnes, K.A., Sinclair, C.R. and Watson, D.H., Eds., ChemicalMigrationandFoodContactMaterials, Elsevier, 228-250. https://doi.org/10.1533/9781845692094.3.228
Garcia, D.S., de Paula Amantes, B. and Tavares, M.I.B. (2023) Employment of Waste from the Textile Industry for the Production of Nanocomposites Aiming at the Generation of Thermal Shrinkable Films and the Non-Formation of Microplastics. Materials Sciences and Applications, 14, 426-438. https://doi.org/10.4236/msa.2023.148028
[10]
Statista (2023) Market Value of Plastics Worldwide in 2023, with a Forecast for 2033. Statista Research Market, Jan 28, 2024. https://www.statista.com/statistics/1060583/global-market-value-of-plastic/
[11]
Wu, J., Lai, M., Zhang, Y., Li, J., Zhou, H., Jiang, R., et al. (2020) Microplastics in the Digestive Tracts of Commercial Fish from the Marine Ranching in East China Sea, China. Case Studies in Chemical and Environmental Engineering, 2, Article ID: 100066. https://doi.org/10.1016/j.cscee.2020.100066
[12]
Statista (2023) Annual Production of Plastics Worldwide from 1950 to 2022. Statista Research Department, Jan 25, 2023. https://www.statista.com/statistics/282732/global-production-of-plastics-since-1950/
[13]
Plastics Europe (2022) Plastics—The Facts 2022. https://plasticseurope.org/knowledge-hub/plastics-the-facts-2022/
[14]
Bratovcic A (2019) Degradation of Micro-and Nano-Plastics by Photocatalytic Methods. Journal of Nanoscience and Nanotechnology Applications, 3, Article 304
[15]
Kumar, V., Singh, E., Singh, S., Pandey, A. and Bhargava, P.C. (2023) Micro-and Nano-Plastics (MNPs) as Emerging Pollutant in Ground Water: Environmental Impact, Potential Risks, Limitations and Way Forward towards Sustainable Management. Chemical Engineering Journal, 459, Article ID: 141568. https://doi.org/10.1016/j.cej.2023.141568
[16]
Hanif, M.A., Ibrahim, N., Dahalan, F.A., Md Ali, U.F., Hasan, M. and Jalil, A.A. (2022) Microplastics and Nanoplastics: Recent Literature Studies and Patents on Their Removal from Aqueous Environment. Science of the Total Environment, 810, Article ID: 152115. https://doi.org/10.1016/j.scitotenv.2021.152115
[17]
Patrício Silva, A.L. (2021) New Frontiers in Remediation of (Micro) Plastics. Current Opinion in Green and Sustainable Chemistry, 28, Article ID: 100443. https://doi.org/10.1016/j.cogsc.2020.100443
[18]
Nithin, A., Sundaramanickam, A., Bratovcic, A., Surya, P. and Sathish, M. (2022) Microplastics Occurrence in Different Regions around the World. In: Sillanpää, M., Khadir, A. and Muthu, S.S., Eds., MicroplasticsPollutioninAquaticMedia, Springer, 1-20. https://doi.org/10.1007/978-981-16-8440-1_1
[19]
Bratovcic, A., Nithin, A. and Sundaramanickam, A. (2022) Microplastics Pollution in Rivers. In: Sillanpää, M., Khadir, A. and Muthu, S.S., Eds., MicroplasticsPollutioninAquaticMedia, Springer, 21-40. https://doi.org/10.1007/978-981-16-8440-1_2
[20]
Hermabessiere, L., Dehaut, A., Paul-Pont, I., Lacroix, C., Jezequel, R., Soudant, P., et al. (2017) Occurrence and Effects of Plastic Additives on Marine Environments and Organisms: A Review. Chemosphere, 182, 781-793. https://doi.org/10.1016/j.chemosphere.2017.05.096
[21]
Zimmermann, L., Dierkes, G., Ternes, T.A., Völker, C. and Wagner, M. (2019) Benchmarking the in Vitro Toxicity and Chemical Composition of Plastic Consumer Products. Environmental Science & Technology, 53, 11467-11477. https://doi.org/10.1021/acs.est.9b02293
[22]
Nabi, I., Bacha, A., Ahmad, F. and Zhang, L. (2021) Application of Titanium Dioxide for the Photocatalytic Degradation of Macro-and Micro-Plastics: A Review. Journal of Environmental Chemical Engineering, 9, Article ID: 105964. https://doi.org/10.1016/j.jece.2021.105964
[23]
Zhang, F., Zhao, Y., Wang, D., Yan, M., Zhang, J., Zhang, P., et al. (2021) Current Technologies for Plastic Waste Treatment: A Review. Journal of Cleaner Production, 282, Article ID: 124523. https://doi.org/10.1016/j.jclepro.2020.124523
[24]
Jing, Y., Wang, Y., Furukawa, S., Xia, J., Sun, C., Hülsey, M.J., et al. (2021) Towards the Circular Economy: Converting Aromatic Plastic Waste Back to Arenes over a Ru/nb2o5 Catalyst. Angewandte Chemie International Edition, 60, 5527-5535. https://doi.org/10.1002/anie.202011063
[25]
Su, K., Liu, H., Zhang, C. and Wang, F. (2022) Photocatalytic Conversion of Waste Plastics to Low Carbon Number Organic Products. Chinese Journal of Catalysis, 43, 589-594. https://doi.org/10.1016/s1872-2067(21)63885-8
[26]
Chen, Z., Liu, X., Wei, W., Chen, H. and Ni, B. (2022) Removal of Microplastics and Nanoplastics from Urban Waters: Separation and Degradation. Water Research, 221, Article ID: 118820. https://doi.org/10.1016/j.watres.2022.118820
[27]
Shi, X., Zhang, X., Gao, W., Zhang, Y. and He, D. (2022) Removal of Microplastics from Water by Magnetic Nano-Fe3O4. Science of the Total Environment, 802, Article ID: 149838. https://doi.org/10.1016/j.scitotenv.2021.149838
[28]
Nikiema, J. and Asiedu, Z. (2022) A Review of the Cost and Effectiveness of Solutions to Address Plastic Pollution. Environmental Science and Pollution Research, 29, 24547-24573. https://doi.org/10.1007/s11356-021-18038-5
[29]
Lee, Q.Y. and Li, H. (2021) Photocatalytic Degradation of Plastic Waste: A Mini Review. Micromachines, 12, Article 907. https://doi.org/10.3390/mi12080907
[30]
Tian, L., Chen, Q., Jiang, W., Wang, L., Xie, H., Kalogerakis, N., et al. (2019) A Carbon-14 Radiotracer-Based Study on the Phototransformation of Polystyrene Nanoplastics in Water versus in Air. Environmental Science: Nano, 6, 2907-2917. https://doi.org/10.1039/c9en00662a
[31]
Zhao, X.u., Li, Z., Chen, Y., Shi, L. and Zhu, Y. (2007) Solid-Phase Photocatalytic Degradation of Polyethylene Plastic under UV and Solar Light Irradiation. Journal of Molecular Catalysis A: Chemical, 268, 101-106. https://doi.org/10.1016/j.molcata.2006.12.012
[32]
Yousif, E. and Haddad, R. (2013) Photodegradation and Photostabilization of Polymers, Especially Polystyrene: Review. SpringerPlus, 2, Article No. 398. https://doi.org/10.1186/2193-1801-2-398
[33]
Zhang, K., Hamidian, A.H., Tubić, A., Zhang, Y., Fang, J.K.H., Wu, C., et al. (2021) Understanding Plastic Degradation and Microplastic Formation in the Environment: A Review. Environmental Pollution, 274, Article ID: 116554. https://doi.org/10.1016/j.envpol.2021.116554
[34]
Singh, B. and Sharma, N. (2008) Mechanistic Implications of Plastic Degradation. Polymer Degradation and Stability, 93, 561-584. https://doi.org/10.1016/j.polymdegradstab.2007.11.008
[35]
Ali, S.S., Elsamahy, T., Koutra, E., Kornaros, M., El-Sheekh, M., Abdelkarim, E.A., et al. (2021) Degradation of Conventional Plastic Wastes in the Environment: A Review on Current Status of Knowledge and Future Perspectives of Disposal. Science of the Total Environment, 771, Article ID: 144719. https://doi.org/10.1016/j.scitotenv.2020.144719
[36]
Zhang, Q., Dandeneau, C.S., Zhou, X. and Cao, G. (2009) ZnO Nanostructures for Dye-Sensitized Solar Cells. Advanced Materials, 21, 4087-4108. https://doi.org/10.1002/adma.200803827
[37]
Noman, M.T., Amor, N., Petru, M., Mahmood, A. and Kejzlar, P. (2021) Photocatalytic Behaviour of Zinc Oxide Nanostructures on Surface Activation of Polymeric Fibres. Polymers, 13, Article 1227. https://doi.org/10.3390/polym13081227
[38]
ul Haq, A., Saeed, M., Gul Khan, S. and Ibrahim, M. (2022) Photocatalytic Applications of Titanium Dioxide (TiO2). In: Ali, H.M., Ed., TitaniumDioxide—AdvancesandApplications, IntechOpen. https://doi.org/10.5772/intechopen.99598
[39]
Bratovčić, A. (2023) Recent Achievements in Photocatalytic Degradation of Organic Water Contaminants. Kemija u industriji, 72, 573-583. https://doi.org/10.15255/kui.2022.058
[40]
Bratovcic, A. (2019) Photocatalytic Degradation of Organic Compounds in Wastewaters. Technologica Acta, 11, 17-23. https://doi.org/10.5281/zenodo.2563022
[41]
Ge, J., Zhang, Z., Ouyang, Z., Shang, M., Liu, P., Li, H., et al. (2022) Photocatalytic Degradation of (Micro) Plastics Using TiO2-Based and Other Catalysts: Properties, Influencing Factor, and Mechanism. Environmental Research, 209, Article ID: 112729. https://doi.org/10.1016/j.envres.2022.112729
[42]
Nabi, I., Bacha, A., Li, K., Cheng, H., Wang, T., Liu, Y., et al. (2020) Complete Photocatalytic Mineralization of Microplastic on TiO2 Nanoparticle Film. iScience, 23, Article ID: 101326. https://doi.org/10.1016/j.isci.2020.101326
[43]
Yuwendi, Y., Ibadurrohman, M., Setiadi, S. and Slamet, S. (2022) Photocatalytic Degradation of Polyethylene Microplastics and Disinfection of E. coli in Water over Fe-and Ag-Modified TiO2 Nanotubes. Bulletin of Chemical Reaction Engineering & Catalysis, 17, 263-277. https://doi.org/10.9767/bcrec.17.2.13400.263-277
[44]
Amato, P., Muscetta, M., Venezia, V., Cocca, M., Gentile, G., Castaldo, R., et al. (2023) Eco-sustainable Design of Humic Acids-Doped ZnO Nanoparticles for UVA/Light Photocatalytic Degradation of LLDPE and PLA Plastics. Journal of Environmental Chemical Engineering, 11, Article ID: 109003. https://doi.org/10.1016/j.jece.2022.109003
[45]
Razali, N., Wan Abdullah, W.R. and Mohd Zikir, N. (2020) Effect of Thermo-Photocatalytic Process Using Zinc Oxide on Degradation of Macro/Micro-Plastic in Aqueous Environment. Journal of Sustainability Science and Management, 15, 1-14. https://doi.org/10.46754/jssm.2020.08.001
[46]
Uheida, A., Mejía, H.G., Abdel-Rehim, M., Hamd, W. and Dutta, J. (2021) Visible Light Photocatalytic Degradation of Polypropylene Microplastics in a Continuous Water Flow System. Journal of Hazardous Materials, 406, Article ID: 124299. https://doi.org/10.1016/j.jhazmat.2020.124299
[47]
Lam, S., Chew, K., Sin, J., Zeng, H., Lin, H., Li, H., et al. (2022) Ameliorated Photodegradation Performance of Polyethylene and Polystyrene Films Incorporated with ZnO-PVP Catalyst. Journal of Environmental Chemical Engineering, 10, Article ID: 107594. https://doi.org/10.1016/j.jece.2022.107594
[48]
Díez, A.M., Pazos, M., Sanromán, M.Á., Naranjo, H.V., Mayer, J. and Kolen'ko, Y.V. (2023) Photocatalytic Solid-Phase Degradation of Polyethylene with Fluoride-Doped Titania under Low Consumption Ultraviolet Radiation. Journal of Environmental Management, 329, Article ID: 117044. https://doi.org/10.1016/j.jenvman.2022.117044
[49]
Raj, H., Bhatt, S., Laddha, S. and Rana, S. (2023) Ultrasonication-Aided Photocatalytic Degradation of Polyethylene. Materials Today: Proceedings, 72, 500-506. https://doi.org/10.1016/j.matpr.2022.10.104
[50]
Li, S., Xu, S., He, L., Xu, F., Wang, Y. and Zhang, L. (2010) Photocatalytic Degradation of Polyethylene Plastic with Polypyrrole/TiO2 Nanocomposite as Photocatalyst. Polymer-Plastics Technology and Engineering, 49, 400-406. https://doi.org/10.1080/03602550903532166
[51]
Zhao, X.U., Li, Z., Chen, Y., Shi, L. and Zhu, Y. (2007) Solid-Phase Photocatalytic Degradation of Polyethylene Plastic under UV and Solar Light Irradiation. Journal of Molecular Catalysis A: Chemical, 268, 101-106. https://doi.org/10.1016/j.molcata.2006.12.012
[52]
Zhao, X., Li, Z., Chen, Y., Shi, L. and Zhu, Y. (2008) Enhancement of Photocatalytic Degradation of Polyethylene Plastic with CuPc Modified TiO2 Photocatalyst under Solar Light Irradiation. Applied Surface Science, 254, 1825-1829. https://doi.org/10.1016/j.apsusc.2007.07.154
[53]
Wang, D., Zhang, P., Yan, M., Jin, L., Du, X., Zhang, F., et al. (2022) Degradation Mechanism and Properties of Debris of Photocatalytically Degradable Plastics LDPE-TiO2 Vary with Environments. Polymer Degradation and Stability, 195, Article ID: 109806. https://doi.org/10.1016/j.polymdegradstab.2021.109806
[54]
Kaewkam, P., Kanchanapaetnukul, A., Khamyan, J., Phadmanee, N., Lin, K.A., Kobwittaya, K., et al. (2022) UV-Assisted TiO2 Photocatalytic Degradation of Virgin LDPE Films: Effect of UV-A, UV-C, and TiO2. Journal of Environmental Chemical Engineering, 10, Article ID: 108131. https://doi.org/10.1016/j.jece.2022.108131
[55]
Olajire, A.A. and Mohammed, A.A. (2021) Bio-Directed Synthesis of Gold Nanoparticles Using Ananas comosus Aqueous Leaf Extract and Their Photocatalytic Activity for LDPE Degradation. Advanced Powder Technology, 32, 600-610. https://doi.org/10.1016/j.apt.2021.01.009
[56]
Ariza-Tarazona, M.C., Villarreal-Chiu, J.F., Hernández-López, J.M., Rivera De la Rosa, J., Barbieri, V., Siligardi, C., et al. (2020) Microplastic Pollution Reduction by a Carbon and Nitrogen-Doped TiO2: Effect of pH and Temperature in the Photocatalytic Degradation Process. Journal of Hazardous Materials, 395, Article ID: 122632. https://doi.org/10.1016/j.jhazmat.2020.122632
[57]
Acuña-Bedoya, J.D., Luévano-Hipólito, E., Cedillo-González, E.I., Domínguez-Jaimes, L.P., Hurtado, A.M. and Hernández-López, J.M. (2021) Boosting Visible-Light Photocatalytic Degradation of Polystyrene Nanoplastics with Immobilized CuxO Obtained by Anodization. Journal of Environmental Chemical Engineering, 9, Article ID: 106208. https://doi.org/10.1016/j.jece.2021.106208
