CARBON NANODOTS AS LIGHT-ACTIVATED OXIDASE NANOZYME FOR ECO-FRIENDLY LEACHING OF COPPER FROM SCRAP
ABSTRACT. The copper is the second largest strategic raw material. Since there is a huge gap between copper production and consumption, a green and eco-sustainable recycling technology is necessary that is able to process the copper from secondary sources of waste and scraps. Here we demonstrate the...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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University of Mining and Geology “St. Ivan Rilski”
2022-08-01
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| Series: | Sustainable Extraction and Processing of Raw Materials Journal |
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| Online Access: | https://seprm.com/wp-content/uploads/2022/08/Arahenglova-2022.pdf |
| _version_ | 1811217058099101696 |
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| author | Velichka Arahangelova Alexandre Loukanov |
| author_facet | Velichka Arahangelova Alexandre Loukanov |
| author_sort | Velichka Arahangelova |
| collection | DOAJ |
| description | ABSTRACT. The copper is the second largest strategic raw material. Since there is a huge gap between copper production and consumption, a green and eco-sustainable recycling technology is necessary that is able to process the copper from secondary sources of waste and scraps. Here we demonstrate the photo-oxidising properties of pyrrolic nitrogen-dominated carbon nanodots as eco-friendly and powerful oxidase-mimicking nanozyme for leaching of copper from metal scrap under irradiation with either ultraviolet or natural sun light (average intensity of 59 000 lux). The ultra-small nanoparticles with diameter < 5 nm were prepared by 600 W microwave-assisted pyrolysis, which might be considered as energy efficient synthetic method. The developed strategy enables to dissolve Cu metal at neutral pH range (between 5.1 – 8.3) and it might break the pH limitation for recycling of copper in the conventional chemical methods, where toxic and corrosive substances are used. The obtained yield was about 5 %, which is still not satisfactory for practical application in recycle technology. Nevertheless, according to our knowledge there is not any other reported photosensitizer nanozyme, which is capable to induce oxidation and dissolving of copper under natural light irradiation of neutral leaching solution. |
| first_indexed | 2024-04-12T06:47:48Z |
| format | Article |
| id | doaj.art-1c46f6d5b941446d8d9dd566b61ccead |
| institution | Directory Open Access Journal |
| issn | 2738-7100 2738-7151 |
| language | English |
| last_indexed | 2024-04-12T06:47:48Z |
| publishDate | 2022-08-01 |
| publisher | University of Mining and Geology “St. Ivan Rilski” |
| record_format | Article |
| series | Sustainable Extraction and Processing of Raw Materials Journal |
| spelling | doaj.art-1c46f6d5b941446d8d9dd566b61ccead2022-12-22T03:43:28ZengUniversity of Mining and Geology “St. Ivan Rilski”Sustainable Extraction and Processing of Raw Materials Journal2738-71002738-71512022-08-0133111510.5281/zenodo.7006966CARBON NANODOTS AS LIGHT-ACTIVATED OXIDASE NANOZYME FOR ECO-FRIENDLY LEACHING OF COPPER FROM SCRAPVelichka Arahangelova0Alexandre Loukanov1University of Mining and Geology “St. Ivan Rilski”, 1700 Sofia, BulgariaUniversity of Mining and Geology “St. Ivan Rilski”, 1700 Sofia, Bulgaria, Department of Chemistry and Materials Science, National Institute of Technology, Gunma College, 580 Toriba, Maebashi, Gunma 371-8530 JapanABSTRACT. The copper is the second largest strategic raw material. Since there is a huge gap between copper production and consumption, a green and eco-sustainable recycling technology is necessary that is able to process the copper from secondary sources of waste and scraps. Here we demonstrate the photo-oxidising properties of pyrrolic nitrogen-dominated carbon nanodots as eco-friendly and powerful oxidase-mimicking nanozyme for leaching of copper from metal scrap under irradiation with either ultraviolet or natural sun light (average intensity of 59 000 lux). The ultra-small nanoparticles with diameter < 5 nm were prepared by 600 W microwave-assisted pyrolysis, which might be considered as energy efficient synthetic method. The developed strategy enables to dissolve Cu metal at neutral pH range (between 5.1 – 8.3) and it might break the pH limitation for recycling of copper in the conventional chemical methods, where toxic and corrosive substances are used. The obtained yield was about 5 %, which is still not satisfactory for practical application in recycle technology. Nevertheless, according to our knowledge there is not any other reported photosensitizer nanozyme, which is capable to induce oxidation and dissolving of copper under natural light irradiation of neutral leaching solution.https://seprm.com/wp-content/uploads/2022/08/Arahenglova-2022.pdfuiooxidase-mimicking nanozymecarbon nanodots |
| spellingShingle | Velichka Arahangelova Alexandre Loukanov CARBON NANODOTS AS LIGHT-ACTIVATED OXIDASE NANOZYME FOR ECO-FRIENDLY LEACHING OF COPPER FROM SCRAP Sustainable Extraction and Processing of Raw Materials Journal uio oxidase-mimicking nanozyme carbon nanodots |
| title | CARBON NANODOTS AS LIGHT-ACTIVATED OXIDASE NANOZYME FOR ECO-FRIENDLY LEACHING OF COPPER FROM SCRAP |
| title_full | CARBON NANODOTS AS LIGHT-ACTIVATED OXIDASE NANOZYME FOR ECO-FRIENDLY LEACHING OF COPPER FROM SCRAP |
| title_fullStr | CARBON NANODOTS AS LIGHT-ACTIVATED OXIDASE NANOZYME FOR ECO-FRIENDLY LEACHING OF COPPER FROM SCRAP |
| title_full_unstemmed | CARBON NANODOTS AS LIGHT-ACTIVATED OXIDASE NANOZYME FOR ECO-FRIENDLY LEACHING OF COPPER FROM SCRAP |
| title_short | CARBON NANODOTS AS LIGHT-ACTIVATED OXIDASE NANOZYME FOR ECO-FRIENDLY LEACHING OF COPPER FROM SCRAP |
| title_sort | carbon nanodots as light activated oxidase nanozyme for eco friendly leaching of copper from scrap |
| topic | uio oxidase-mimicking nanozyme carbon nanodots |
| url | https://seprm.com/wp-content/uploads/2022/08/Arahenglova-2022.pdf |
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