Abstract Stabilization of zero-valent CuNi nanoparticles (NPs) supported on Cicer arietenum (CP) is reported here for the reduction and removal of persistent organic pollutants. The functional groups and interactions of NPs with the CP were determined by ATR-FTIR. The crystallinity, morphology, and the elemental composition of the samples were determined through powder XRD, FESEM, and EDS techniques, respectively. The XRD spectrum displayed a sharp crystalline peak at 43.9 for CuNi. The Cu and Ni zero-valent NPs displayed a peak at almost the same region, and thus, both the peaks are merged and appeared as a single peak. The chemical reduction/degradation of eight model pollutants, viz., 2-nitrophenol (ONP), 3-nitrophenol (MNP), 4-nitrophenol (PNP), 2,4-dinitrophenol (DNP), methyl orange (MO), congo red (CR), methylene blue (MB), and rhodamine B (RB) were carried out in the presence of NaBH4. The k app value of 0.1 mM 4NP was highest which was 1.8 × 10−1 min−1 while the slowest rate was observed for CR and RB with k app 5.5 × 10−3 and 5.4 × 10−3 min−1 respectively. This article helps in the removal of toxic organic pollutants through green supported NPs.

中文翻译：

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湿法共浸法制备生物质负载CuNi零价纳米粒子去除致癌染料和硝基芳烃

摘要本文报道了在 Cicer arietenum (CP) 上负载的零价 CuNi 纳米粒子 (NPs) 的稳定化，用于减少和去除持久性有机污染物。NPs 与 CP 的官能团和相互作用由 ATR-FTIR 确定。分别通过粉末XRD、FESEM和EDS技术测定样品的结晶度、形貌和元素组成。CuNi 的 XRD 谱显示在 43.9 处有一个尖锐的结晶峰。Cu 和 Ni 的零价 NPs 在几乎相同的区域显示出一个峰，因此，两个峰合并并作为一个峰出现。八种模型污染物的化学还原/降解，即2-硝基苯酚（ONP）、3-硝基苯酚（MNP）、4-硝基苯酚（PNP）、2,4-二硝基苯酚（DNP）、甲基橙（MO）、刚果红 (CR)、亚甲蓝 (MB)、和罗丹明 B (RB) 在 NaBH4 存在下进行。0.1 mM 4NP 的 k app 值最高，为 1.8 × 10-1 min-1，而对于 CR 和 RB 观察到的速率最慢，k app 分别为 5.5 × 10-3 和 5.4 × 10-3 min-1。本文有助于通过绿色支持的 NPs 去除有毒有机污染物。