Hydrothermal synthesis of BCQD@g-C3N4 nanocomposites supporting environmental sustainability: Organic dye removal and bacterial inactivation

IF 5.4 Q2 ENGINEERING, ENVIRONMENTAL Journal of hazardous materials advances Pub Date : 2024-09-07 DOI:10.1016/j.hazadv.2024.100464
Aysenur Aygun, Rima Nour Elhouda Tiri, Ramazan Bayat, Fatih Sen
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Abstract

Various studies are being carried out on the removal of organic dyes and the production of antibacterial agents. In this study, boron-doped carbon quantum dot (BCQD) was synthesized by hydrothermal method, and BCQD@g-C3N4 nanocomposite structure was synthesized using graphitic carbon nitride (g-C3N4) as the support material. The photocatalytic activity of the synthesized nanocomposite against MO, RhB dyes, and Escherichia coli (E. coli) bacteria was investigated. The surface, morphology, molecular, and crystal properties of BCQD@g-C3N4 were investigated using characterization methods such as Transmission electron microscopy (TEM), Fourier Transform Infrared Spectroscopy (FTIR), Fluorescence (FL) spectrophotometer, and X-ray diffraction (XRD). As a result of TEM analysis, it was determined that the average particle size of BCQD was 5.1 ± 1.14 nm and showed a homogeneous distribution on 2D g-C3N4. In the XRD spectrum for BCQDs, the diffraction peak corresponding to the (002) amorphous carbon phase was observed at 21.65° In the PL spectrum of B-CQD@g-C3N4s, the emission value was observed at 458 nm. In the study conducted by taking advantage of the photocatalytic feature of BCQD@g-C3N4 nanocomposite, Rhodamine B (RhB) and Methyl orange (MO) were degraded by 65.58 % and 73.56 %, respectively, at the end of 120 min. Additionally, BCQD@g-C3N4 photocatalyst completely inhibited the growth of E. coli bacteria, which are frequently encountered in wastewater, at 90 minutes under sunlight. Escherichia coli (E. coli), which is frequently encountered in wastewater, BCQD@g-C3N4 completely prevented bacterial growth in the 90th minute under sunlight.

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水热合成支持环境可持续性的 BCQD@g-C3N4 纳米复合材料:去除有机染料和灭活细菌
目前正在就去除有机染料和生产抗菌剂开展各种研究。本研究采用水热法合成了掺硼碳量子点(BCQD),并以氮化石墨碳(g-C3N4)为支撑材料合成了 BCQD@g-C3N4 纳米复合结构。研究了合成的纳米复合材料对 MO、RhB 染料和大肠杆菌的光催化活性。利用透射电子显微镜(TEM)、傅立叶变换红外光谱(FTIR)、荧光分光光度计(FL)和 X 射线衍射(XRD)等表征方法研究了 BCQD@g-C3N4 的表面、形态、分子和晶体性质。TEM 分析结果表明,BCQD 的平均粒径为 5.1 ± 1.14 nm,在二维 g-C3N4 上呈均匀分布。在 BCQD 的 XRD 光谱中,与 (002) 无定形碳相对应的衍射峰位于 21.65°。利用 BCQD@g-C3N4 纳米复合材料的光催化特性进行的研究表明,在 120 分钟结束时,罗丹明 B(RhB)和甲基橙(MO)的降解率分别为 65.58% 和 73.56%。此外,BCQD@g-C3N4 光催化剂在 90 分钟的日光照射下完全抑制了废水中常见的大肠杆菌的生长。废水中常见的大肠杆菌(E. coli),BCQD@g-C3N4 在日光下第 90 分钟完全阻止了细菌的生长。
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来源期刊
Journal of hazardous materials advances
Journal of hazardous materials advances Environmental Engineering
CiteScore
4.80
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0.00%
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审稿时长
50 days
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