The discharge of various textile effluents into water is provoking numerous ecological issues that have become severe threat to human beings and aquatic lives. The removal of the effluents by photodegradation using appropriate nanoparticles (NPs) is the most promising remediation process. In this study, a facile hydrothermal approach is utilized to fabricate pure ZnO and strontium doped ZnO nanoparticles (Sr-ZnO). The fabricated nanoparticles represented hexagonal morphology and structure which was controlled with the strontium doping. The optical properties of fabricated NPs were also controlled and approached to visible light (2.52 eV) instead of the UV light. The fabricated NPs were employed for photodegradation of Rhodamine B (RHB) dye from polluted wastewater and further effect of factors like light irradiation time, pH, photocatalyst dose, dye concentration etc. was also explored to optimize the parameters. Sr-ZnO photocatalyst represent excellent RHB dye degradation as well as cyclic stability with pseudo first order kinetics. The current study proves the suitability of Sr-ZnO photocatalyst under visible light irradiation for treatment of the organic and dye polluted wastewaters.

将各种纺织品废水排放到水中正在引发许多生态问题，这些生态问题已严重威胁着人类和水生生物。通过使用适当的纳米颗粒（NP）进行光降解去除废水是最有希望的补救方法。在这项研究中，利用一种简便的水热方法来制造纯ZnO和锶掺杂的ZnO纳米颗粒（Sr-ZnO）。所制备的纳米颗粒表现出六边形的形态和结构，并受到锶掺杂的控制。人造NP的光学特性也受到控制，接近可见光（2.52 eV），而不是紫外光。制备的纳米粒被用于从污染废水中光降解罗丹明B（RHB）染料，并进一步影响光照射时间，pH，光催化剂剂量，还研究了染料浓度等以优化参数。Sr-ZnO光催化剂表现出出色的RHB染料降解以及具有拟一级动力学的循环稳定性。当前的研究证明了Sr-ZnO光催化剂在可见光照射下适用于处理有机和染料污染的废水。