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Bentonite-supported furfural-based Schiff base palladium nanoparticles: an efficient catalyst in treatment of water/wastewater pollutants
Journal of Materials Science: Materials in Electronics ( IF 2.8 ) Pub Date : 2020-07-03 , DOI: 10.1007/s10854-020-03839-0
Mahmoud Nasrollahzadeh , Talat Baran , Mohaddeseh Sajjadi , Nuray Yılmaz Baran , Mohammadreza Shokouhimehr

This study reports a versatile process for the fabrication of palladium nanoparticles (Pd NPs) stabilized on Schiff base modified Unye bentonite with a coordination performance of furfural ligand (UN-Fur@PdNPs) as a promising nanocatalyst in the reduction of organic/inorganic pollutants. APTES ((3-aminopropyl)triethoxysilane)-modified UN-Fur@PdNPs has been synthesized via a facile, multi-step procedure without any additional stabilizing/reducing agents. The characterization of UN-Fur@PdNPs sample was carried out by FTIR, XRD, EDS, elemental mapping, STEM, TEM, HRTEM, and TG/DTG analyses which indicate the formation of Pd NPs (~ 10 nm) on the surface of UN-Fur. The catalytic activity/stability of the as-prepared nanocatalyst has also been assessed in the reduction of 4-nitrophenol (4-NP), Congo Red (CR), Methylene Blue (MB), and Methyl Orange (MO) dyes by NaBH4 (sodium borohydride) and chromium [Cr(VI)] by HCOOH (formic acid) in water. Catalytic efficiency retention has also been obtained after eight cycles. UN-Fur@PdNPs showed excellent catalytic performance and high stability/sustainability in the reduction of all five targeted organic/inorganic pollutants.



中文翻译:

膨润土负载的糠醛基席夫碱钯纳米粒子:一种有效的催化剂,用于处理水/废水污染物

这项研究报告了一种稳定的席夫碱改性Unye膨润土上稳定的钯纳米颗粒(Pd NPs)的通用工艺,糠醛配体(UN-Fur @ PdNPs)的配位性能可作为减少有机/无机污染物的有前途的纳米催化剂。APTES((3-氨基丙基)三乙氧基硅烷)改性的UN-Fur @ PdNPs已通过简便的多步骤程序合成,没有任何其他稳定剂/还原剂。通过FTIR,XRD,EDS,元素图谱,STEM,TEM,HRTEM和TG / DTG分析对UN-Fur @ PdNPs样品进行表征,这表明在联合国表面上形成了Pd NPs(〜10 nm)。 -毛皮。制备的纳米催化剂的催化活性/稳定性还可以通过还原4-硝基苯酚(4-NP),刚果红(CR),亚甲基蓝(MB),4(硼氢化钠)和铬[Cr(VI)]在水中的HCOOH(甲酸)。在八个循环后也获得了催化效率的保持。UN-Fur @ PdNPs在减少所有五种目标有机/无机污染物方面均表现出出色的催化性能和高稳定性/可持续性。

更新日期:2020-07-03
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