Abstract This investigation focused on the photocatalytic treatment of pollutants in waste water using methylene blue (MB) and methyl orange (MO) as the model dyes. In this study, conducting polyaniline (PANI) based nanocomposites doped with 2D hexagonal boron nitride (h-BN) were synthesised using simplistic oxidative in-situ polymerization technique by employing ammonium persulfate as an initiator in acidic medium. The synthesised 2D h-BN doped PANI nanocomposites were comprehensively characterized using field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), elemental mapping, X-ray diffraction (XRD), Brunauer-Emmett-Teller analysis (BET), thermogravimetric analysis (TGA), and Fourier transform infrared spectroscopy (FTIR). Degradation of MB and MO dyes under UV irradiations was performed to evaluate the photocatalytic performance of the synthesised nanocomposites. The results indicated that the h-BN nanosheets doped nanocomposites demonstrated better photocatalytic activities as compared to bare PANI or h-BN. Moreover, the nanocomposite P-BN-2, with 2 wt% of 2D h-BN nanosheets was found to be an optimal composition with 93% and 95% degradation efficiency for MB and MO within 90 min respectively.

中文翻译：

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用于光催化降解水溶液中致癌染料的二维氮化硼掺杂聚苯胺杂化纳米复合材料的合成

摘要 本研究的重点是使用亚甲蓝 (MB) 和甲基橙 (MO) 作为模型染料光催化处理废水中的污染物。在这项研究中，使用简单的氧化原位聚合技术，通过在酸性介质中使用过硫酸铵作为引发剂，合成了掺杂有二维六方氮化硼 (h-BN) 的导电聚苯胺 (PANI) 基纳米复合材料。使用场发射扫描电子显微镜 (FESEM)、透射电子显微镜 (TEM)、元素映射、X 射线衍射 (XRD)、Brunauer-Emmett-Teller 分析 (BET) 对合成的 2D h-BN 掺杂 PANI 纳米复合材料进行了综合表征，热重分析 (TGA) 和傅里叶变换红外光谱 (FTIR)。在紫外线照射下进行 MB 和 MO 染料的降解以评估合成的纳米复合材料的光催化性能。结果表明，与裸PANI或h-BN相比，h-BN纳米片掺杂的纳米复合材料表现出更好的光催化活性。此外，发现含有 2 wt% 2D h-BN 纳米片的纳米复合材料 P-BN-2 是最佳组合物，在 90 分钟内对 MB 和 MO 的降解效率分别为 93% 和 95%。