Yadav Meena, Arora Rajat, Dhanda Monika, Ahlawat Simran, Shoran Sachin, Ahlawat Suman, Nehra Satya Pal, Singh Geeta, Lata Suman
Department of Chemistry, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, 131039 Haryana India.
Center of Excellence for Energy and Environmental Studies, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Haryana 131039 India.
J Environ Health Sci Eng. 2023 Apr 25;21(1):239-254. doi: 10.1007/s40201-023-00858-x. eCollection 2023 Jun.
A series of polypyrrole doped TiO-SiO nanohybrids (Ppy/TS NHs) were synthesized thru in-situ oxidation polymerization by varying weight ratio of pyrrole. The structural analysis of NHs were characterized by X-ray Diffraction (XRD) spectra, UV-visible (UV-Vis) spectra and X-ray Photoelectron spectra (XPS) confirmed synthesis of nanomaterials. Surface and morphological study done by adopting, Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS), Transmittance Electron Microscopy (TEM) and Brunauer-Emmett-Teller (BET) analysis confirmed the homogenous distribution, nano range size formation and mesoporous nature of nanohybrids. Further, electrochemical behavior of synthesized NHs investigated by adopting Electrochemical Impedance Spectroscopy (EIS) showed good kinetic behaviour and electron transport tendency. The nanohybrids and precursors were examined for photocatalytic degradation of methylene blue (MB) dye and revealed enhanced degradation tendency for the NHs series photocatalysts. It was found that variation of pyrrole (0.1 to 0.3 g) to TS nanocomposites (TS Nc) increased the photocatalytic potential of TS Nc. The maximum photodegradation efficacy was found to be 90.48% in 120 min for Ppy/TS0.2 NHs under direct solar light. Additionally, Ppy/TS0.2 NHs performed appreciably towards antibacterial studies against some Gram-positive and Gram-negative deleterious bacteria, Escherichia coli, Klebsiella pneumoniae, Staphylococcus aureus, Shigella flexneri microbes.
通过改变吡咯的重量比，通过原位氧化聚合合成了一系列聚吡咯掺杂的TiO-SiO纳米杂化物（Ppy/TS NHs）。通过X射线衍射（XRD）光谱、紫外可见（UV-Vis）光谱和X射线光电子能谱（XPS）对纳米杂化物进行结构分析，证实了纳米材料的合成。采用扫描电子显微镜（SEM）、能量色散光谱（EDS）、透射电子显微镜（TEM）和布鲁诺尔-埃米特-泰勒（BET）分析进行表面和形态学研究，证实了纳米杂化物的均匀分布、纳米级尺寸形成和介孔性质。此外，采用电化学阻抗谱（EIS）研究合成的纳米杂化物的电化学行为，结果表明其具有良好的动力学行为和电子传输趋势。对纳米杂化物和前驱体进行了亚甲基蓝（MB）染料的光催化降解研究，结果表明NHs系列光催化剂具有增强的降解趋势。研究发现，吡咯（0.1至0.3 g）与TS纳米复合材料（TS Nc）的比例变化增加了TS Nc的光催化潜力。在直射太阳光下，Ppy/TS0.2 NHs在120分钟内的最大光降解效率为90.48%。此外，Ppy/TS0.2 NHs对一些革兰氏阳性和革兰氏阴性有害细菌，如大肠杆菌、肺炎克雷伯菌、金黄色葡萄球菌、弗氏志贺菌微生物的抗菌研究表现出明显效果。
