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A methodology to use laser printing, a form of electrophotography, to print metal chalcogenide complexes on paper, is described. After fusing the toner to paper, a heating step is used to cause the printed metal xanthate complexes to thermolyze within the toner and form three target metal chalcogenides: CuS, SnS, and ZnS. To achieve this, we synthesize a poly(styrene---butyl acrylate) thermopolymer that emulates the thermal properties of a commercial toner and is also solution processable with the metal xanthate complexes used: [Zn(SCOEt)], [Cu(SCOEt)·(PPh)], and [Sn(SCOEt)]. We demonstrate through energy dispersive X-ray mapping that the toner is deposited following printing and that thermolysis of the metal xanthate complexes occurs in the fused toner, demonstrating the first example of laser printing of inorganic complexes and, in turn, semiconductors.
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http://dx.doi.org/10.1021/acsaenm.3c00709 | DOI Listing |
Sci Rep
August 2025
Department of Mining Engineering, Amirkabir University of Technology, Tehran, Iran.
This study aims to float lead from the lead smelting slag of a Kaldo furnace. The slag characterization showed that the slag consisted of galena, quartz, metallic lead, sphalerite, and pyrrhotite (10.3% Pb, 5.
View Article and Find Full Text PDFWater Res
July 2025
Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, Honolulu, HI 96822, USA; Hawaii Pacific Neuroscience, 2230 Liliha Street, Honolulu, HI 96817, United States.
Mining activities release a substantial quantity of toxic metals and organic flotation reagents into the aquatic environment, causing severe pollution and potential health risks. However, the synergisms and mechanisms associated with these mixed pollutants are largely overlooked. The combined application of atomic force microscopy, high-resolution mass spectrometry, nuclear magnetic resonance spectroscopy, isothermal titration calorimetry, and quantum chemical calculations revealed that cadmium (Cd) was capable of forming tridentate coordination complexes with typical organic beneficiation reagents, namely xanthates (ethyl, isopropyl, and butyl xanthates).
View Article and Find Full Text PDFJ Mol Model
June 2025
Programa de Pós-Graduação em Química, Instituto de Química, Universidade Federal Fluminense, Outeiro de S. João Batista S/N, Centro/Niterói, RJ, 24210-130, Brazil.
Context: Environmental contamination by heavy metals is increasing due to population growth and industrial activity, which is having a major impact on the environment. Xanthates, which form stable complexes with metals, are used to remove them from aqueous environments. Known for their role in ore flotation, these compounds also have applications in the biological field and thin film production.
View Article and Find Full Text PDFGels
June 2025
"Acad. Evgeni Budevski" Institute of Electrochemistry and Energy Systems (IEES), Bulgarian Academy of Sciences (BAS), Acad. G. Bonchev Str., bl. 10, 1113 Sofia, Bulgaria.
The aim of this study is to explore the feasibility of using flotation wastewater from copper-porphyry ore processing to synthesize a gel that serves as a precursor for a polymer nanocomposite used in supercapacitor electrode fabrication. These wastewaters-characterized by high acidity and elevated concentrations of metal cations (Cu, Ni, Zn, Fe), sulfates, and organic reagents such as xanthates, oil (20 g/t ore), flotation frother (methyl isobutyl carbinol), and pyrite depressant (CaO, 500-1000 g/t), along with residues from molybdenum flotation (sulfuric acid, sodium hydrosulfide, and kerosene)-are byproducts of copper-porphyry gold-bearing ore beneficiation. The reduction of Ni powder in the wastewater induces the degradation and formation of a gel that captures both residual metal ions and organic compounds-particularly xanthates-which play a crucial role in the subsequent steps.
View Article and Find Full Text PDFLangmuir
July 2025
State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Yunnan Key Laboratory of Green Separation and Enrichment of Strategic Metal Resources, Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, PR China.
The efficient flotation separation between chalcopyrite and pyrite is considered challenging under weak alkaline conditions due to their similar floatability characteristics. In this work, based on the differences in the chemical valence states of Fe atoms on chalcopyrite and pyrite, an innovative depressant system combining sodium sulfide (NaS) and proanthocyanidins (PC) was proposed. In artificial mixed ore tests, compared with a single PC, a higher separation efficiency between chalcopyrite and pyrite is achieved when the combined depressants 20 mg/L NaS and 40 mg/L PC are employed.
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