Abstract Gold nanoparticles (Au NPs) were fabricated by laser ablation in liquid (LAL) as a green method and decorated on graphitic carbon nitride (g-C3N4) by a facile ultrasonication method. g-C3N4 was prepared via urea pyrolysis. The prepared g-C3N4/Au (denoted as CN/Au) nanocomposite was characterized using X-ray diffraction (XRD), Fourier transform infrared (FTIR), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM) and energy dispersive X-ray spectrometry (EDS). The synthesized CN/Au nanocomposite was applied as an efficient catalyst in the reduction of 4-nitrophenol (4-NP) and methyl orange (MO) using NaBH4 at room temperature. The recyclability of CN/Au catalyst was examined.

中文翻译：

---

使用激光烧蚀制备 g-C3N4/Au 纳米复合材料及其作为减少水中有机污染物的有效催化剂的应用

摘要 金纳米粒子 (Au NPs) 是通过液体激光烧蚀 (LAL) 作为绿色方法制备的，并通过简便的超声波方法装饰在石墨氮化碳 (g-C3N4) 上。g-C3N4 通过尿素热解制备。使用 X 射线衍射 (XRD)、傅里叶变换红外 (FTIR)、X 射线光电子能谱 (XPS)、透射电子显微镜 (TEM)、场发射扫描电子显微镜 (FESEM) 和能量色散 X 射线光谱 (EDS)。合成的 CN/Au 纳米复合材料用作室温下使用 NaBH4 还原 4-硝基苯酚 (4-NP) 和甲基橙 (MO) 的有效催化剂。考察了 CN/Au 催化剂的可回收性。