生物缀合合成、植物化学分析和 NiFeO 纳米粒子的旋光性，用于从水中去除环丙沙星和刚果红。

Bioconjugate synthesis, phytochemical analysis, and optical activity of NiFeO nanoparticles for the removal of ciprofloxacin and Congo red from water.

机构信息

Department of Chemistry, Islamia University Bahawalpur, Bahawalpur, 63100, Pakistan.

Department of Biology, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh, 11657, Saudi Arabia.

出版信息

Sci Rep. 2021 Mar 8;11(1):5439. doi: 10.1038/s41598-021-84983-3.

In this paper, Jr.NiFeO nanoparticles (NPs) were synthesized first time using the leaves extract of Juglans regia via a straightforward process. The physio and phytochemical analysis of plant confirm the presence of macromolecules which function as bio-reductant and stabilize the nanoparticles. The Jr.NiFeO NPs were characterized by UV-visible, FTIR spectroscopy, PXRD pattern, SEM and TGA/DTA analysis. The nanoparticles proved to be optically active having a value of indirect bandgap of energy in the range of 1.53 eV. The Jr.NiFeO NPs have the ability in scavenging 2,2-diphenyl-1-picrylhydrazyl hydrate (DPPH) free radicals and showed 58.01% ± 1.2% scavenging activity at 100 µg/mL concentrations. The photocatalytic degradation study of ciprofloxacin (CIP) and Congo red (CR) reveals that the highest degradation rate was acquired for CIP using pH = 3, at 254 nm, while 85% of removal rate was analysed for CR. The kinetic studies in case of CR removal followed pseudo-first-order model with thermodynamic parameters (∆G° = - 5.87 kJ mol K, ΔH° = 1393.50 kJ mol and ΔS° = 22.537 kJ mol K) with error analysis. Overall, these data recommend an innovative inspiring application of a plant-mediated synthesis of Jr.NiFeO NPs.

本研究首次采用 Juglans regia 叶片提取物通过简单的方法合成了 NiFeO 纳米粒子（NPs）。植物的生理和生化分析证实了存在大分子物质，这些物质起到生物还原剂的作用并稳定了纳米颗粒。通过 UV-可见分光光度计、傅里叶变换红外光谱（FTIR）、X 射线粉末衍射（PXRD）图谱、扫描电子显微镜（SEM）和热重分析/差示扫描量热法（TGA/DTA）对 Jr.NiFeO NPs 进行了表征。结果表明，纳米颗粒具有光活性，其间接带隙能值在 1.53 eV 范围内。Jr.NiFeO NPs 具有清除 2,2-二苯基-1-苦基肼基（DPPH）自由基的能力，在 100 μg/mL 浓度下，清除率达到 58.01%±1.2%。环丙沙星（CIP）和刚果红（CR）的光催化降解研究表明，在 pH=3、254nm 时，CIP 的降解率最高，而 CR 的去除率为 85%。在 CR 去除的动力学研究中，遵循准一级动力学模型，热力学参数（∆G°=−5.87 kJ mol K，ΔH°=1393.50 kJ mol 和 ΔS°=22.537 kJ mol K）并进行误差分析。总的来说，这些数据为基于植物介导合成 NiFeO NPs 的创新性应用提供了参考。