Extraction of Silver by Glucose. (27th April 2016)

• Record Type: Journal Article
• Authors: Baksi, Ananya; Gandi, Mounika; Chaudhari, Swathi; Bag, Soumabha; Gupta, Soujit Sen; Pradeep, Thalappil
• Is Part Of: Angewandte Chemie. Volume 128:Number 27(2016)
• Page Start: 7908
• Page End: 7912
• Publication Date: 2016-04-27
• Subjects: Metallextraktion -- Nachhaltige Prozesse -- Silber; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201510122
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: Unprecedented silver ion leaching, in the range of 0.7 ppm was seen when metallic silver was heated in water at 70 °C in presence of simple carbohydrates, such as glucose, making it a green method of silver extraction. Extraction was facilitated by the presence of anions, such as carbonate and phosphate. Studies confirm a two‐step mechanism of silver release, first forming silver ions at the metal surface and later complexation of ionic silver with glucose; such complexes have been detected by mass spectrometry. Extraction leads to microscopic roughening of the surface making it Raman active with an enhancement factor of 5×10 8 .