Green Electrodeposition of Nano Gold from Benign Solution of HAuCl4.4H2O in Alum: Urea Deep Eutectic Solvent | ||||
| Egyptian Journal of Chemistry | ||||
| Volume 65, Issue 132, December 2022, Page 387-393 PDF (864.29 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejchem.2022.128055.5680 | ||||
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| Authors | ||||
Eman Turky Shamkhy1; Hadi M. A. Abood2; Taghried Ali Salman 3
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| 1Chemistry Department, College of Science, Al-Nahrain University, P.O.B.64055,Jadria, Baghdad, Iraq. | ||||
| 2Chemistry Department, College of Science, Al-Nahrain University, P.O.B.64055,Jadria, Baghdad, Iraq | ||||
| 3chemistry department,college of science, Al-Nahrain university, Baghdad, Iraq | ||||
| Abstract | ||||
| Deep Eutectic Solvents (DES) have demonstrated enormous potential in the electrodeposition of various materials, including metals and alloys. Usually, gold electroplating solution consists of toxic material of gold cyano compounds. This work demonstrates novel green electroplating of nanogold from Alum: Urea deep eutectic solvent (DES) containing chloro-gold compound (HAuCl4.4H2O). Gold showed one stage redox system in this reduction solution at -0.2V and oxidation and oxidation maximum at -0.3V. The electroplated gold on brass at -0.7V for one and three hours gave a brown-colored layer containing nanogold particles with an average distribution of (31.16-33.44) nm. The crystalline structure of deposited gold is like a cubic crystal with 10 nm size. This work was followed by scanning electron microscopy (Fe-SEM), Atomic Force Microscopy (AFM), Energy Dispersive X-ray analysis (EDX), and X-ray diffraction (XRD). | ||||
| Keywords | ||||
| Deep Eutectic Solvent; green electroplating; gold nano particles | ||||
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