A preliminary study of using greener materials including deep eutectic solvents (DESs) for the cleaning of silver tarnish
Bibliographic Data
| ID | 12513430 |
|---|---|
| Authors | Q Wu (0000-0001-5337-0396, HES-SO University of Applied Sciences and Arts Western Switzerland, corresponding author), Jack Harrison (0000-0003-4787-1869, Paul Scherrer Institute), Patrycja Janina Petrasz (HES-SO University of Applied Sciences and Arts Western Switzerland), Lidia Mathys (HES-SO University of Applied Sciences and Arts Western Switzerland), Edith Joseph (0000-0001-6967-8141, HES-SO University of Applied Sciences and Arts Western Switzerland, corresponding author) |
| Year | 2025 |
| Volume | 76 |
| Pages | 126-135 |
| Publication date | 2025-09-27 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Journal of Cultural Heritage (JOURNAL) |
| Journal identifiers | ISSN: 1296-2074 • E-ISSN: 1778-3674 |
| Publisher | Elsevier BV (PUBLISHER) |
| DOI | 10.1016/j.culher.2025.08.002 |
| OpenAlex | W7083588496 |
| Language | EN |
| References cited | 32 |
Employment of deep eutectic solvents as greener materials for silver cleaning. • Obstinate silver tarnish successfully transformed into more soluble products. • Controllable cleaning process and suitable for objects with curved surfaces. We present a preliminary study of the cleaning of artificially tarnished silver mock-ups with several greener materials, including sodium glycinate, ethylenediamine-N,N’-disuccinic acid (EDDS), saponin, and deep eutectic solvents (DESs), in comparison to a commercial silver polish product. While sodium glycinate, EDDS and saponin did not show substantial cleaning effects on light silver tarnish, a two-step method combining (i) oxidative DESs and (ii) sodium glycinate-based suspension proved effective for the removal of heavy tarnish. However, observations via colorimetry, interferometry microscopy, optical microscopy, and scanning electron microscopy showed that this two-step method could lead to surface roughening. While clear scratches and over-polishing issues were observed on coupon surfaces cleaned by the commercial silver polish product, the use of a slurry composed of sodium glycinate, citric acid, glycerol and water resulted in optimal cleaning effects, despite its relatively low cleaning rate
Citric acid · Eutectic system · Scanning electron microscope · Slurry · Sodium · Sodium citrate · Tarnish · International Student and Expatriate Challenges · Medical and Pharmaceutic Studies · Organizational Leadership and Management Strategies
| Highly cited | No |
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