Synthesis, Characterization, Photocatalytic and Antimicrobial Potential of Pr2O3/ZnO/gC3N4 Nanocomposite

IF 2.6 4区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES
Kiran Sabir Ali, Kausar Hussain Shah, Hafiz Muhammad Asif, Muhammad Ali Khan, Shabbir Hussain, Muhammad Tariq
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Abstract

In the current work, an efficient co-precipitation technique was used to develop a new Pr2O3/ZnO/g-C3N4 ternary nanocomposite. Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray (EDX) were used for vibrational, structural, morphological, and compositional analysis, respectively. The FTIR spectrum confirmed the presence of characteristics vibrational bands associated with the Pr–O, Zn–O, at 603 cm−1 and 546 cm−1, respectively. The XRD pattern revealed the presence of diffraction peaks related to ZnO (hexagonal), Pr2O3 (hexagonal) and gC3N4 (tetragonal) in the nanocomposite. SEM images revealed that the nanocomposite has porous type morphology with high agglomeration. The photocatalytic activity of nanocomposite was assessed against organic dye pollutant Methylene blue (MB) and antibiotic Ciprofloxacin (CIP) under the sunlight irradiation. The maximum degradation efficiency of nanocomposite for MB 93% at pH = 11 and CIP 97% at pH = 6. The scavenger's experiment was carried out, and the findings demonstrate that the photocatalytic activity of MB and CIP is strongly dependent on the (•OH) and (O2•-) species. The antimicrobial activity was also analyzed against bacterial strains such as GrampositiveBacillus subtilis, Staphylococcus aureus, and Gram negative Klebsiella pneumoniae, Escherichia colispecies. The results showed higher inhibition zones against Escherichia coli.

Abstract Image

Pr2O3/ZnO/gC3N4 纳米复合材料的合成、表征、光催化和抗菌潜力
本研究采用高效共沉淀技术开发了一种新型 Pr2O3/ZnO/g-C3N4 三元纳米复合材料。傅立叶变换红外光谱(FTIR)、X 射线衍射(XRD)、扫描电子显微镜(SEM)和能量色散 X 射线(EDX)分别用于振动、结构、形态和成分分析。傅立叶变换红外光谱证实了在 603 cm-1 和 546 cm-1 处分别存在与 Pr-O 和 Zn-O 相关的特征振动带。XRD 图谱显示,纳米复合材料中存在与 ZnO(六方)、Pr2O3(六方)和 gC3N4(四方)相关的衍射峰。扫描电镜图像显示,纳米复合材料具有多孔型形貌,团聚度较高。在阳光照射下,评估了纳米复合材料对有机染料污染物亚甲基蓝(MB)和抗生素环丙沙星(CIP)的光催化活性。在 pH = 11 时,纳米复合材料对甲基溴的最大降解效率为 93%;在 pH = 6 时,纳米复合材料对环丙沙星的最大降解效率为 97%。进行了清除剂实验,结果表明 MB 和 CIP 的光催化活性与(-OH)和(O2--)物种密切相关。此外,还分析了 MB 和 CIP 对革兰氏阳性枯草杆菌、金黄色葡萄球菌和革兰氏阴性肺炎克雷伯菌、大肠埃希菌等细菌菌株的抗菌活性。结果显示,对大肠埃希菌的抑制区较大。
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来源期刊
CiteScore
5.40
自引率
0.00%
发文量
104
审稿时长
1.7 months
期刊介绍: International Journal of Environmental Research is a multidisciplinary journal concerned with all aspects of environment. In pursuit of these, environmentalist disciplines are invited to contribute their knowledge and experience. International Journal of Environmental Research publishes original research papers, research notes and reviews across the broad field of environment. These include but are not limited to environmental science, environmental engineering, environmental management and planning and environmental design, urban and regional landscape design and natural disaster management. Thus high quality research papers or reviews dealing with any aspect of environment are welcomed. Papers may be theoretical, interpretative or experimental.
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