Mon Phyu Phyu, Cho Phyu Phyu, Chandana L, Srikanth V V S S, Madras Giridhar, Ch Subrahmanyam
Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285, Telangana, India.
Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285, Telangana, India.
J Environ Manage. 2023 Oct 15;344:118418. doi: 10.1016/j.jenvman.2023.118418. Epub 2023 Jun 24.
Eco-friendly carbothermal techniques were used to synthesize nanocomposites of biowaste-derived Ni/NiO decorated-2D biochar. The use of chitosan and NiCl in the carbothermal reduction technique was a novelty to synthesize the Ni/NiO decorated-2D biochar composite. Potassium persulfate (PS) was found to be activated by Ni/NiO decorated-2D biochar, which is thought to oxidize organic pollutants through an electron pathway designed by the reactive complexes formed between PS and the Ni/NiO biochar surface. This activation led to the efficient oxidation of methyl orange and organic pollutants. Analyzing Ni/NiO decorated-2D biochar composite before and after the methyl orange adsorption and degradation procedure allowed us to report on the process of its elimination. The Ni/NiO biochar with PS activation showed higher efficiency than Ni/NiO decorated-2D biochar composite as this material was able to degrade over 99% of the methyl orange dye. The effects of initial methyl orange concentration, dosages effect, solution pH, equilibrium studies, kinetics, thermodynamic studies, and reusability were examined and evaluated on Ni/NiO biochar.
采用环保型碳热技术合成了生物废弃物衍生的Ni/NiO修饰二维生物炭纳米复合材料。在碳热还原技术中使用壳聚糖和氯化镍来合成Ni/NiO修饰二维生物炭复合材料是一种创新。发现过硫酸钾（PS）可被Ni/NiO修饰二维生物炭活化，据认为其通过PS与Ni/NiO生物炭表面形成的反应性络合物所设计的电子途径氧化有机污染物。这种活化导致甲基橙和有机污染物的高效氧化。分析甲基橙吸附和降解过程前后的Ni/NiO修饰二维生物炭复合材料，使我们能够报告其消除过程。具有PS活化的Ni/NiO生物炭比Ni/NiO修饰二维生物炭复合材料表现出更高的效率，因为这种材料能够降解超过99%的甲基橙染料。研究并评估了初始甲基橙浓度、剂量效应、溶液pH值、平衡研究、动力学、热力学研究以及Ni/NiO生物炭的可重复使用性等方面的影响。
