Ain Noor Ul, Rehman Zia Ur, Nayab Ujala, Nasir Jamal Abdul, Aamir Asma
Department of Chemistry, Quaid-i-Azam University Islamabad-45320 Pakistan
RSC Adv. 2020 Jul 21;10(46):27377-27386. doi: 10.1039/d0ra04852f.
In this study, Fe-doped copper sulfide nanoparticles (NPs) were investigated for the solar-assisted reduction of Cr ions in raw water. The Fe-doped NPs were synthesized by decomposing copper(ii) ,-diphenylmethylpiperazinecarbamodithioate a facile single-step, one-pot solvothermal method in the presence of iron salt. The Cr photoreduction data were fit to a pseudo-first-order kinetic model and a Langmuir model. The CuS/CuS NP reduction ability for Cr increases with an increase in dopant percentage. The best catalyst (9% Fe-doped) was able to reduce Cr (10 M KCrO) to Cr in raw water using an initial amount of 10 mg in 6 min with a reduction efficiency of up to 100%. The photocatalytic activity was examined while varying five different parameters: sunlight, diffused light, change in pH, and changes in the concentration of the catalyst and the temperature. This new approach presents an active, simple, and cost-effective means for wastewater treatment.
在本研究中，对铁掺杂硫化铜纳米颗粒（NPs）用于太阳能辅助还原原水中的铬离子进行了研究。通过在铁盐存在下，采用简便的单步一锅溶剂热法分解二苯基甲基哌嗪氨基二硫代甲酸铜（II）来合成铁掺杂的纳米颗粒。将铬光还原数据拟合到准一级动力学模型和朗缪尔模型。CuS/CuS NP对铬的还原能力随掺杂剂百分比的增加而增强。最佳催化剂（9%铁掺杂）能够在原水中将10 M K₂CrO₄中的铬还原为Cr³⁺，初始用量为10 mg，在6分钟内还原效率高达100%。在改变五个不同参数（阳光、散射光、pH值变化、催化剂浓度变化和温度变化）的情况下对光催化活性进行了检测。这种新方法为废水处理提供了一种有效、简单且经济高效的手段。
