[1] Zhang, S., Li, B., Wang, X., Zhao, G., Hu, B., Lu, Z., Wen, T., Chen, J., & Wang, X. (2020). Recent developments of two-dimensional graphene-based composites in visible-light photocatalysis for eliminating persistent organic pollutants from wastewater. Chemical Engineering Journal, 390: 124642.
[2] Lellis, B., Fávaro-Polonio, C. Z., Pamphile, J. A., & Polonio, J. C. (2019). Effects of textile dyes on health and the environment and bioremediation potential of living organisms. Biotechnology Research and Innovation, 3(2): 275-290.
[3] Guan, G., Ye, E., You, M., & Li, Z. (2020). Hybridized 2D nanomaterials toward highly efficient photocatalysis for degrading pollutants: current status and future perspectives. Small, 16(19): 1907087.
[4] Yin, J., Gao, D., Zhu, X., Liu, X., & Li, H. (2021). One-pot synthesis of 3D porous Bi7O9I3/N-doped graphene aerogel with enhanced photocatalytic activity for organic dye degradation in wastewater. Ceramics International, 47(14): 19556-19566.
[5] Donkadokula, N. Y., Kola, A. K., Naz, I., & Saroj, D. (2020). A review on advanced physico-chemical and biological textile dye wastewater treatment techniques. Reviews in environmental science and bio/technology: 1-18.
[6] Shoukat, R., Khan, S. J., & Jamal, Y. (2019). Hybrid anaerobic-aerobic biological treatment for real textile wastewater. Journal of Water Process Engineering, 29: 100804.
[7] Samsami, S., Mohamadizaniani, M., Sarrafzadeh, M. -H., Rene, E. R., & Firoozbahr, M. (2020). Recent advances in the treatment of dye-containing wastewater from textile industries: Overview and perspectives. Process safety and environmental protection, 143: 138-163.
[8] Gautam, S., Agrawal, H., Thakur, M., Akbari, A., Sharda, H., Kaur, R., & Amini, M. (2020). Metal oxides and metal organic frameworks for the photocatalytic degradation: A review. Journal of Environmental Chemical Engineering, 8(3): 103726.
[9] Ren, G., Han, H., Wang, Y., Liu, S., Zhao, J., Meng, X., & Li, Z. (2021). Recent advances of photocatalytic application in water treatment: a review. Nanomaterials, 11(7): 1804.
[10] Gusain, R., Gupta, K., Joshi, P., & Khatri, O. P. (2019). Adsorptive removal and photocatalytic degradation of organic pollutants using metal oxides and their composites: A comprehensive review. Advances in colloid and interface science, 272: 102009.
[11] Rafiq, A., Ikram, M., Ali, S., Niaz, F., Khan, M., Khan, Q., & Maqbool, M. (2021). Photocatalytic degradation of dyes using semiconductor photocatalysts to clean industrial water pollution. Journal of Industrial and Engineering Chemistry, 97: 111-128.
[12] Lee, K. M., Lai, C. W., Ngai, K. S., & Juan, J. C. (2016). Recent developments of zinc oxide based photocatalyst in water treatment technology: a review. Water research, 88: 428-448.
[13] Saffari, R., Shariatinia, Z., & Jourshabani, M. (2020). Synthesis and photocatalytic degradation activities of phosphorus containing ZnO microparticles under visible light irradiation for water treatment applications. Environmental Pollution, 259: 113902.
[14] Kabir, R., Saifullah, M. A. K., Ahmed, A. Z., Masum, S. M., & Molla, M. A. I. (2020). Synthesis of n-doped ZnO nanocomposites for sunlight photocatalytic degradation of textile dye pollutants. Journal of Composites Science, 4(2): 49.
[15] He, D., Wang, L., Xu, D., Zhai, J., Wang, D., & Xie, T. (2011). Investigation of photocatalytic activities over Bi2WO6/ZnWO4 composite under UV light and its photoinduced charge transfer properties. ACS applied materials & interfaces, 3(8): 3167-3171.
[16] Kumari, V., Mittal, A., Jindal, J., Yadav, S., & Kumar, N. (2019). S-, N-and C-doped ZnO as semiconductor photocatalysts: A review. Frontiers of Materials Science, 13(1): 1-22.
[17] Singh, P., Kumar, R., & Singh, R. K. (2019). Progress on transition metal-doped ZnO nanoparticles and its application. Industrial & Engineering Chemistry Research, 58(37): 17130-17163.
[18] Sanakousar, F., Vidyasagar, C., Jiménez-Pérez, V., & Prakash, K. (2022). Recent progress on visible-light-driven metal and non-metal doped ZnO nanostructures for photocatalytic degradation of organic pollutants. Materials Science in Semiconductor Processing, 140: 106390.
[19] Zhao, J., Zhao, L., & Wang, X. (2008). Preparation and characterization of ZnO/ZnS hybrid photocatalysts via microwave-hydrothermal method. Frontiers of Environmental Science & Engineering in China, 2(4): 415-420.
[20] Jung, H., Pham, T. -T., &Shin, E. W. (2019). Effect of g-C3N4 precursors on the morphological structures of g-C3N4/ZnO composite photocatalysts. Journal of Alloys and Compounds, 788: 1084-1092.
[21] Dhahri, I., Ellouze, M., Labidi, S., Al-Bataineh, Q. M., Etzkorn, J., Guermazi, H., Telfah, A., Tavares, C. J., Hergenröder, R., & Appel, T. (2022). Optical and structural properties of ZnO NPs and ZnO–Bi2O3 nanocomposites. Ceramics International, 48(1): 266-277.
[22] Munguti, L., & Dejene, F. (2021). Effects of Zn: Ti molar ratios on the morphological, optical and photocatalytic properties of ZnO-TiO2 nanocomposites for application in dye removal. Materials Science in Semiconductor Processing, 128: 105786.
[23] Goktas, S., & Goktas, A. (2021). A comparative study on recent progress in efficient ZnO based nanocomposite and heterojunction photocatalysts: A review. Journal of Alloys and Compounds, 863: 158734.
[24] Lin, J., Luo, Z., Liu, J., & Li, P. (2018). Photocatalytic degradation of methylene blue in aqueous solution by using ZnO-SnO2 nanocomposites. Materials Science in Semiconductor Processing, 87: 24-31.
[25] Zamiri, R., Tobaldi, D. M., Ahangar, H. A., Rebelo, A., Seabra, M. P., Belsley, M. S., & Ferreira, J. (2014). Study of far infrared optical properties and, photocatalytic activity of ZnO/ZnS
hetero-nanocomposite structure. RSC advances, 4(67): 35383-35389.
[26] Lee, G. -J., & Wu, J. J. (2017). Recent developments in ZnS photocatalysts from synthesis to photocatalytic applications—A review. Powder technology, 318: 8-22.
[27] Ali, S., Saleem, S., Salman, M., & Khan, M. (2020). Synthesis, structural and optical properties of ZnS–ZnO nanocomposites. Materials Chemistry and Physics, 248: 122900.
[28] Sanad, M. F., Shalan, A. E., Bazid, S. M., & Abdelbasir, S. M. (2018). Pollutant degradation of different organic dyes using the photocatalytic activity of ZnO@ ZnS nanocomposite materials. Journal of environmental chemical engineering, 6(4): 3981-3990.
[29] Ma, Q., Wang, Z., Jia, H., & Wang, Y. (2016). ZnS–ZnO nanocomposites: synthesis, characterization and enhanced photocatatlytic performance. Journal of Materials Science: Materials in Electronics, 27(10): 10282-10288.
[30] Sundararajan, M., Sakthivel, P., & Fernandez, A. C. (2018). Structural, optical and electrical properties of ZnO-ZnS nanocomposites prepared by simple hydrothermal method. Journal of Alloys and Compounds, 768: 553-562.
[31] Ali, M. M., Haque, M. J., Kabir, M. H., Kaiyum, M. A., & Rahman, M. (2021). Nano synthesis of ZnO–TiO2 composites by sol-gel method and evaluation of their antibacterial, optical and photocatalytic activities. Results in Materials, 11: 100199.
[32] Parashar, M., Shukla, V. K., & Singh, R. (2020). Metal oxides nanoparticles via sol–gel method: a review on synthesis, characterization and applications. Journal of Materials Science: Materials in Electronics, 31(5): 3729-3749.
[33] Dhas, C. R., Venkatesh, R., Jothivenkatachalam, K., Nithya, A., Benjamin, B. S., Raj, A. M. E., Jeyadheepan, K., & Sanjeeviraja, C. (2015). Visible light driven photocatalytic degradation of Rhodamine B and Direct Red using cobalt oxide nanoparticles. Ceramics International, 41(8): 9301-9313.
[34] Biswas, S., & Kar, S. (2008). Fabrication of ZnS nanoparticles and nanorods with cubic and hexagonal crystal structures: a simple solvothermal approach. Nanotechnology, 19(4): 045710.
[35] Yang, X., Liu, H., Li, T., Huang, B., Hu, W., Jiang, Z., Chen, J., & Niu, Q. (2020). Preparation of flower-like ZnO@ ZnS core-shell structure enhances photocatalytic hydrogen production. International Journal of Hydrogen Energy, 45(51): 26967-26978.
[36] Asgari, E., & Kalantari, K. (2021). Improvement of Photocatalytic Activity of ZnO Nanoparticles by Mn Doping in BD71 Degradation. Iranian Chemical Engineering Journal, 20(115): 43-52.
[37] Shanmugasundaram, A., Kim, D. -S., Chinh, N. D., Park, J., Jeong, Y. -J., Piao, J., Kim, D., & Lee, D. W. (2021). N-/S-dual doped C@ ZnO: An excellent material for highly selective and responsive NO2 sensing at ambient temperatures. Chemical Engineering Journal, 421: 127740.
[38] Raleaooa, P. V., Roodt, A., Mhlongo, G. G., Motaung, D. E., Kroon, R. E., & Ntwaeaborwa, O. M. (2017). Luminescent, magnetic and optical properties of ZnO-ZnS nanocomposites. Physica B: Condensed Matter, 507: 13-20.
[39] Kalantari, K., Kalbasi, M., Sohrabi, M., & Royaee, S. J. (2016). Synthesis and characterization of N-doped TiO2 nanoparticles and their application in photocatalytic oxidation of dibenzothiophene under visible light. Ceramics International, 42(13): 14834-14842.
[40] Makuła, P., Pacia, M., & Macyk, W. (2018). How to correctly determine the band gap energy of modified semiconductor photocatalysts based on UV–Vis spectra, ACS Publications, 6814-6817.
[41] Habibi, M. H., & Mikhak, M. (2012). Titania/zinc oxide nanocomposite coatings on glass or quartz substrate for photocatalytic degradation of direct blue 71. Applied Surface Science, 258(18): 6745-6752.
[42] Lan, C., Gong, J., Jiang, Y., & Ding, Q. (2012). Fabrication of ZnS/SnO nanowire/nanosheet hierarchical nanoheterostructure and its photoluminescence properties. CrystEngComm, 14(23): 8063-8067.
[43] Yang, L., Zhao, Z., Wang, H., Dong, J., Wang, L., Zhou, Q., Wan, X., Zhao, R., & Cai, Z. (2020). Synthesis of ZnO/ZnS core/shell microsphere and its photocatalytic activity for methylene blue and eosin dyes degradation. Journal of Dispersion Science and Technology, 41(14): 2152-2158.
[44] Karthikeyan, C., Arunachalam, P., Ramachandran, K., Al-Mayouf, A. M., & Karuppuchamy, S. (2020). Recent advances in semiconductor metal oxides with enhanced methods for solar photocatalytic applications. Journal of Alloys and Compounds, 828: 154281.
[45] Muhambihai, P., Rama, V., & Subramaniam, P. (2020). Photocatalytic degradation of aniline blue, brilliant green and direct red 80 using NiO/CuO, CuO/ZnO and ZnO/NiO nanocomposites. Environmental Nanotechnology, Monitoring & Management, 14: 100360.