Nonionic polyacrylamide (NPAM) bismuth bromoxide (BiOBr) ultrathin hierarchical clusters have been prepared by a rapid solvothermal synthesis route. The formation mechanism of the NPAM-BiOBr ultrathin hierarchical clusters was based on the strong bridging role of NPAM between the bismuthyl nitrate (BiONO 3 ) particles and subsequently results in tight junctions between BiOBr nanosheets. The structure, morphology and optical properties of the prepared samples were characterized by X-ray diffraction, Raman spectra, scanning electron microscopy, diffuse reflectance spectroscopy and photoluminescence. The photocatalytic performance of NPAM-BiOBr was evaluated by the degradation of Rhodamine B (RhB) and ciprofloxacin. The photocatalytic efficiency increased by 2.1 and 2.5 times of NPAM-BiOBr for RhB and ciprofloxacin decomposition, respectively. The enhanced photocatalytic activity of NPAM-BiOBr was attributed to the increased light absorption capacity and lower recombination rate of the photo-generated electron and hole pairs.

中文翻译：

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NPAM 辅助快速合成 BiOBr 超薄分级簇，用于高效光催化降解 RhB 和环丙沙星

非离子聚丙烯酰胺 (NPAM) 溴氧化铋 (BiOBr) 超薄分级簇已通过快速溶剂热合成路线制备。NPAM-BiOBr 超薄分级簇的形成机制基于 NPAM 在硝酸铋 (BiONO 3 ) 颗粒之间的强桥接作用，随后导致 BiOBr 纳米片之间的紧密连接。通过X射线衍射、拉曼光谱、扫描电子显微镜、漫反射光谱和光致发光对制备的样品的结构、形貌和光学性质进行了表征。通过降解罗丹明 B (RhB) 和环丙沙星来评估 NPAM-BiOBr 的光催化性能。对于 RhB 和环丙沙星的分解，光催化效率分别提高了 NPAM-BiOBr 的 2.1 倍和 2.5 倍。