Ppy/TiO2-SiO2 nanohybrid series: synthesis, characterization, photocatalytic activity, and antimicrobial potentiality

IF 3 4区环境科学与生态学 Q3 ENGINEERING, ENVIRONMENTAL

Journal of Environmental Health Science and Engineering Pub Date : 2023-04-25 DOI:10.1007/s40201-023-00858-x

Meena Yadav, Rajat Arora, Monika Dhanda, Simran Ahlawat, Sachin Shoran, Suman Ahlawat, Satya Pal Nehra, Geeta Singh, Suman Lata

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引用次数: 5

Abstract

A series of polypyrrole doped TiO₂-SiO₂ 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.

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Ppy/TiO2-SiO2纳米杂化系列:合成、表征、光催化活性和抗菌潜力

采用原位氧化聚合的方法，通过改变吡咯的质量比，合成了一系列掺杂多吡咯的TiO2-SiO2纳米杂化物(Ppy/TS NHs)。利用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)对合成的纳米材料进行了结构表征。采用扫描电镜(SEM)、能谱仪(EDS)、透射电镜(TEM)和BET分析等方法对纳米杂化物进行了表面和形态研究，证实了纳米杂化物的均匀分布、纳米范围尺寸形成和介孔性质。此外，利用电化学阻抗谱(EIS)对合成的NHs的电化学行为进行了研究，发现其具有良好的动力学行为和电子传递倾向。研究了纳米杂化物和前驱体对亚甲基蓝染料的光催化降解，发现NHs系列光催化剂对亚甲基蓝染料的降解有增强的趋势。结果表明，吡咯(0.1 ~ 0.3 g)加入到TS纳米复合材料(TS Nc)中，可以提高TS Nc的光催化电位。在太阳直射下，Ppy/TS0.2 NHs在120 min内的最大光降解效率为90.48%。此外，Ppy/TS0.2 NHs在一些革兰氏阳性和革兰氏阴性有害细菌、大肠杆菌、肺炎克雷伯菌、金黄色葡萄球菌、福氏志贺氏菌的抗菌研究中表现明显。

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来源期刊

Journal of Environmental Health Science and Engineering ENGINEERING, ENVIRONMENTAL-ENVIRONMENTAL SCIENCES

CiteScore

7.50

自引率

2.90%

发文量

期刊介绍： Journal of Environmental Health Science & Engineering is a peer-reviewed journal presenting timely research on all aspects of environmental health science, engineering and management. A broad outline of the journal''s scope includes: -Water pollution and treatment -Wastewater treatment and reuse -Air control -Soil remediation -Noise and radiation control -Environmental biotechnology and nanotechnology -Food safety and hygiene