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Crystals, Volume 15, Issue 6

June 2025 - 95 articles

Cover Story: Crystals of sodium dithiocuprate(I) dodecahydrate, [Na3(H2O)12][CuS2], formed from NaOH/Na2S solutions used for arsenic separation from copper ore. This salt features a linear hydrogen-bonded dithiocuprate(I) anion, a novelty in crystallographically characterized thiocuprates. While we aimed to understand the chemical behavior of the leaching solution by identifying the thioarsenate ions formed, the complex [CuS2]3− was discovered by coincidence using single-crystal analysis. Subsequent targeted synthesis from a modeling solution, based on the leaching solution formulation for arsenic removal, allowed for further crystal characterization through Raman and XRD analyses. By demonstrating that copper can also be leached at high sulfide concentrations, the results presented in this study contribute to the economic development of arsenic removal via sulfide leaching. View this paper
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Articles (95)

  • Article
  • Open Access
1 Citations
758 Views
16 Pages

Annealing of Oxygen-Related Frenkel Defects in Corundum Single Crystals Irradiated with Energetic Xenon Ions

  • Kotomin A. Eugene,
  • Ruslan Assylbayev,
  • Guldar Baubekova,
  • Irina Kudryavtseva,
  • Vladimir N. Kuzovkov,
  • Alise Podelinska,
  • Viktor Seeman,
  • Evgeni Shablonin and
  • Aleksandr Lushchik

18 June 2025

The recovery of radiation damage induced by 231-MeV xenon ions with varying fluence (from 5 × 1011 to 2 × 1014 cm−2) in α-Al2O3 (corundum) single crystals has been studied by means of isochronal thermal annealing of radiation-...

  • Article
  • Open Access
1,243 Views
11 Pages

Eu-Tb-Doped Y-BTC MOF: A Step Towards Optimization of an Energy Conversion System

  • Francesca Lo Presti,
  • Anna Lucia Pellegrino,
  • Francesca Loschi,
  • Emil Milan,
  • Adolfo Speghini and
  • Graziella Malandrino

17 June 2025

Lanthanide-based metal–organic frameworks (Ln-MOFs) represent a key material in various optical applications. Thus, they offer the possibility of fine-tuning their functional properties by adjusting the composition, stoichiometry, and ligand na...

  • Article
  • Open Access
1 Citations
628 Views
15 Pages

Thermally Stable Anilate-Based 3D CPs/MOFs

  • Fabio Manna,
  • Noemi Monni,
  • Mariangela Oggianu,
  • Juan Modesto Clemente-Juan,
  • Miguel Clemente-León and
  • Maria Laura Mercuri

17 June 2025

The synthesis and characterization of two novel redox-active MOFs/CPs based on 3d transition metal ions and 3,6-ditriazolyl-2,5-dihydroxybenzoquinone (trz2An) are reported herein. By combining trz2An with NiII and MnII ions via the hydrothermal metho...

  • Article
  • Open Access
1,327 Views
23 Pages

Optimization of Critical Parameters in Friction Stir Spot Welding of AA5052 Aluminum Alloy Using Response Surface Methodology

  • Mohamed M. El-Sayed Seleman,
  • Sabbah Ataya,
  • Nashmi H. Alrasheedi,
  • Mohamed M. Z. Ahmed,
  • Hagar A. Reyad,
  • Ashraf Bakkar and
  • Ramy A. Fouad

17 June 2025

Understanding and optimizing the relationship between critical processing parameters (rotational speed and dwell time) and the resulting weld performance is crucial for the effective application of friction stir spot welding (FSSW) in joining aluminu...

  • Article
  • Open Access
1 Citations
1,083 Views
23 Pages

Modulation of Protein Dynamics by Glycerol in Water-Soluble Chlorophyll-Binding Protein (WSCP)

  • Mina Hajizadeh,
  • Maksym Golub,
  • Inga Bektas,
  • Leonid L. Rusevich,
  • Jan P. Embs,
  • Wiebke Lohstroh,
  • Harald Paulsen and
  • Jörg Pieper

17 June 2025

Proteins are inherently dynamic entities that rely on flexibility across multiple timescales to perform their biological functions. The surrounding environment plays a critical role in modulating protein dynamics by exerting plasticizing or stabilizi...

  • Article
  • Open Access
622 Views
16 Pages

17 June 2025

In this study, the effects of stearic acid coating concentration (0.85%, 1%, and 1.15% wt.) and storage duration (up to 30 days) on the flow properties of surface-modified micronized calcite powder were investigated to evaluate their implications for...

  • Review
  • Open Access
4 Citations
3,769 Views
36 Pages

16 June 2025

Structural symmetry significantly influences the fundamental characteristics of two-dimensional (2D) materials. In conventional transition metal dichalcogenides (TMDs), the absence of in-plane symmetry introduces distinct optoelectronic behaviors. To...

  • Article
  • Open Access
771 Views
14 Pages

16 June 2025

Calcite (CaCO3), a widely used mineral in materials science and environmental engineering, exhibits excellent stability but has limited mechanical strength and a wide electronic band gap, restricting its broader functional applications. To address th...

  • Article
  • Open Access
1 Citations
708 Views
16 Pages

16 June 2025

We studied the influence of annealing on the magnetic properties and microstructure of ultrathin (metallic nucleus diameter ≈ 5 μm, total diameter ≈ 19 μm) Heusler-type NiMnGa glass-coated microwires prepared using the Taylor–...

  • Article
  • Open Access
1 Citations
1,475 Views
15 Pages

Physicochemical Properties of Demineralized Bone Matrix and Calcium Hydroxide Composites Used as Bone Graft Material

  • Octarina,
  • Florencia Livia Kurniawan,
  • Firda Amalia Larosa,
  • Olivia Nauli Komala and
  • Meircurius Dwi Condro Surboyo

15 June 2025

Vertical bone defects can result in alveolar bone resorption, which may be addressed using composite grafts. A combination of demineralized bone matrix (DBM) and calcium hydroxide (Ca(OH)2) has potential as a bone substitute due to its biological and...

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Crystals - ISSN 2073-4352