Department of Chemistry, Malaviya National Institute of Technology Jaipur, Rajasthan, 302017, India; Department of Chemistry, Dr B R Ambedkar National Institute of Technology, Jalandhar, Punjab, 144011, India.
Department of Chemistry, Malaviya National Institute of Technology Jaipur, Rajasthan, 302017, India.
Chemosphere. 2023 Dec;344:140381. doi: 10.1016/j.chemosphere.2023.140381. Epub 2023 Oct 6.
The world is drawn to the widespread use, toxicity, and bioaccumulation of the Atrazine (AT) and Auramine O (AO). Pesticides and dyes also have endocrine disruptors, genotoxic and persistent properties. Therefore, the photodegradation of AT and AO in water was investigated. Herein, the structural design of Al-ZnFeO incorporated in rGO nanocomposite has been synthesized via facile precipitation and green synthesis methodology. PXRD and microscopic analysis confirmed the reduced crystallinity nature of Al-ZnFeO due to the incorporation of amorphous rGO. The green Al-ZnFeO@rGO nanocomposite (AT: 90%; AO: 95%) showed maximum degradation as compared to native nanoparticles with minimum pollutants concentration of 10 mg catalytic dose at neutral pH in sunlight irradiation due to negative zeta potential (-36.0 mV), higher surface area (163 mg) and tailored band gap (2.1 eV). First-order kinetics followed by initial Langmuir adsorption constituted the degradation process. The presence of different radical quenchers (t-BuOH, p-BZQ, NaEDTA) concluded that hydroxyl radical plays a significant role in the degradation of toxic AT and AO. Green fabricated Al-ZnFeO@rGO also showed excellent efficiency for the degradation of AT and AO pollutant in real wastewater sample. Nanocomposite demonstrated remarkable sustainability and cost-effectiveness by remaining effective for up to nine cycles without experiencing any appreciable activity reduction. Due to its favorable surface features, Al-ZnFeO@rGO nanocomposite made via green process is a unique and potential photocatalyst for industrial applications.
世界关注阿特拉津（AT）和吖啶黄（AO）的广泛使用、毒性和生物蓄积性。农药和染料也具有内分泌干扰物、遗传毒性和持久性。因此，研究了水中 AT 和 AO 的光降解。在此，通过简便的沉淀和绿色合成方法合成了掺入 rGO 纳米复合材料中的 Al-ZnFeO 的结构设计。PXRD 和微观分析证实，由于掺入非晶态 rGO，Al-ZnFeO 的结晶度降低。与原生纳米颗粒相比，绿色 Al-ZnFeO@rGO 纳米复合材料（AT：90%；AO：95%）在中性 pH 值下的太阳光照射下，以 10mg 催化剂量的最小污染物浓度显示出最大降解，这是由于其具有负 zeta 电位（-36.0mV）、更高的表面积（163mg）和定制的带隙（2.1eV）。一级动力学随后是初始 Langmuir 吸附构成了降解过程。不同自由基猝灭剂（t-BuOH、p-BZQ、NaEDTA）的存在表明，羟基自由基在 AT 和 AO 有毒污染物的降解中起着重要作用。绿色制备的 Al-ZnFeO@rGO 还在实际废水样品中显示出对 AT 和 AO 污染物的优异降解效率。纳米复合材料通过在不经历任何明显活性降低的情况下保持有效长达九个循环，表现出出色的可持续性和成本效益。由于其有利的表面特性，通过绿色工艺制备的 Al-ZnFeO@rGO 纳米复合材料是一种用于工业应用的独特且有潜力的光催化剂。
