Green synthesis of gold, silver, platinum, and palladium nanoparticles reduced and stabilized by sodium rhodizonate and their catalytic reduction of 4-nitrophenol and methyl orange
作者:Md. Tariqul Islam、Ricardo Saenz-Arana、Huiyao Wang、Ricardo Bernal、Juan C. Noveron
DOI:10.1039/c8nj01223g
日期:——
bifunctional reducing as well as stabilizing agent for the single step synthesis of gold (Au), silver (Ag), platinum (Pt), and palladium (Pd) nanoparticles (NPs) in water. Transmission electron microscopy analysis revealed that Pt, Au, Ag, and PdNPs have average core diameters of about 2, 8, 26, and 39 nm, respectively. The ability of these nanoparticles towards the catalytic reduction of 4-nitrophenol (4-NP)
重氮酸钠被用作双功能还原剂和稳定剂,用于在水中一步合成金(Au),银(Ag),铂(Pt)和钯(Pd)纳米颗粒(NPs)。透射电子显微镜分析表明,Pt,Au,Ag和PdNPs的平均芯径分别约为2、8、26和39 nm。研究了这些纳米粒子对硼氢化钠(NaBH 4)催化还原4-硝基苯酚(4-NP)以及甲酸的双重催化氧化,然后还原甲基橙(MO)的能力。在Ag,Au,Pt和PdNPs存在下催化还原4-NP的表观速率常数(k app)计算为2.1482、1.1167、1.088×10 -1和分别为1.65×10 -2 min -1。然而,对于甲酸,接着MO的还原的双催化氧化,所述ķ应用程式计算值是4.145,1.25×10 -2,6.7×10 -3和9.0×10 -5的铂, Pd,Au和AgNPs。