Evidence map›Paper›PMID 34716348›Full record

ArticleNature communications2021

Tuneable separation of gold by selective precipitation using a simple and recyclable diamide.

Luke M M Kinsman, Bryne T Ngwenya, Carole A Morrison, Jason B Love

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
7.4field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 111 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Oil-water interfaces drive gold precipitation via microdroplet chemistry in thermal geological systems.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  5. Review
  6. Ecofriendly Upcycling of Poly(vinyl chloride) Waste Plastics into Precious Metal Adsorbents.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Sustainable and Selective Modern Methods of Noble Metal Recycling.Angewandte Chemie (International ed. in English) · 2023
    Review
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

Luke M M KinsmanEaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, UK.
Bryne T NgwenyaSchool of Geosciences, University of Edinburgh, Edinburgh, EH9 3FE, UK.ORCID http://orcid.org/0000-0001-7810-764X
Carole A MorrisonEaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, UK.ORCID http://orcid.org/0000-0002-5489-7111
Jason B LoveEaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, UK. jason.love@ed.ac.uk.ORCID http://orcid.org/0000-0002-2956-258X
University of Edinburgh · GB

Funding

RCUK | Natural Environment Research Council (NERC) NE/L002558/1
6 · The paper itself

Abstract

The efficient separation of metals from ores and secondary sources such as electronic waste is necessary to realising circularity in metal supply. Precipitation processes are increasingly popular and are reliant on designing and understanding chemical recognition to achieve selectivity. Here we show that a simple tertiary diamide precipitates gold selectively from aqueous acidic solutions, including from aqua regia solutions of electronic waste. The X-ray crystal structure of the precipitate displays an infinite chain of diamide cations interleaved with tetrachloridoaurate. Gold is released from the precipitate on contact with water, enabling ligand recycling. The diamide is highly selective, with its addition to 29 metals in 2 M HCl resulting in 70% gold uptake and minimal removal of other metals. At 6 M HCl, complete collection of gold, iron, tin, and platinum occurs, demonstrating that adaptable selective metal precipitation is controlled by just one variable. This discovery could be exploited in metal refining and recycling processes due to its tuneable selectivity under different leaching conditions, the avoidance of organic solvents inherent to biphasic extraction, and the straightforward recycling of the precipitant.

Identifiers

PMID34716348
PMCPMC8556376
OpenAlexW3211327251

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.