We have studied the mineral rostite, a sulphate mineral of aluminium of formula AlSO4(OH,F)·5(H2O). The mineral is formed in mine dumps and wastes. Chemical analysis proves the presence of Al, F and S. A single intense band is observed at 991 cm(-1) and is assigned to the Raman active SO4(2-) ν1 symmetric stretching vibration. Low intensity Raman bands observed at 1070, 1083, 1131 and 1145 cm(-1) are assigned to the SO4(2-) ν3 antisymmetric stretching vibration. Multiple Raman and infrared bands in the OH stretching region are assigned to the stretching vibrations of water. The higher wavenumber band at ∼3400 cm(-1) may be due to the hydroxyl stretching vibrational mode. These multiple bands prove that water is involved in different molecular environments with different hydrogen bond strengths. Vibrational spectroscopy enhances our knowledge of the molecular structure of rostite.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.saa.2015.06.123 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Application of modified solidified soil in in-situ backfilling of coal gangue: evaluation of arsenic stabilization effect and mechanism study.
Environ Geochem Health
January 2025
School of Chemical & Environmental Engineering, China University of Mining and Technology-Beijing, Beijing, 100083, China.
As a typical ecologically fragile area, the Wudong Coal Mine region in Xinjiang generates large accumulations of coal gangue each year, which, in the alkaline soil environment, can easily lead to significant leaching and accumulation of As. This study developed a stabilizer (CFD) using cement, fly ash, and desulfurized gypsum to modify in-situ soil in the Xinjiang mining area, resulting in a modified solidified soil with excellent geotechnical performance and As stabilization capability. The study results showed that when CFD content exceeded 14.
View Article and Find Full Text PDFBehavior and Mechanisms of Antimony Precipitation from Wastewater by Sulfate-Reducing Bacteria .
Toxics
December 2024
Key Laboratory of Biometallurgy, Ministry of Education, School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China.
The development of the non-ferrous metal industry is generating increasingly large quantities of wastewater containing heavy metals (e.g., Sb).
View Article and Find Full Text PDFSelenium-Chondroitin Sulfate Nanoparticles Inhibit Angiogenesis by Regulating the VEGFR2-Mediated PI3K/Akt Pathway.
Mar Drugs
January 2025
College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China.
Chondroitin sulfate (CS), a class of glycosaminoglycans covalently attached to proteins to form proteoglycans, is widely distributed in the extracellular matrix and cell surface of animal tissues. In our previous study, CS was used as a template for the synthesis of seleno-chondroitin sulfate (SeCS) through the redox reaction of ascorbic acid (Vc) and sodium selenite (NaSeO) and we found that SeCS could inhibit tumor cell proliferation and invasion. However, its effect on angiogenesis and its underlying mechanism are unknown.
View Article and Find Full Text PDFDiatomite-Based Hybrid Electrolyte for Improving Reversibility of Cathode/Anode Interface Reaction in Zn-MnO Batteries.
Small Methods
January 2025
School of Materials Science and Engineering, Central South University, Changsha, 410083, P. R. China.
The cyclic stability of aqueous zinc-manganese batteries (ZMBs) is greatly restricted by the side reaction of the anode and the irreversibility of the cathode. In this work, a solid-liquid hybrid electrolyte mixing by traditional ZnSO-based electrolyte and diatomite (denoted as Dtm) is proposed that exhibits good compatibility and reversibility in both the anode interface and the cathode interface. The abundant hydroxyl groups at the anode interface disturb the hydrogen bond network of water molecule, which weakens the corrosion of the active water to Zn anode.
View Article and Find Full Text PDFPromoting SO and OH Generation from Sulfate Solution toward Efficient Electrochemical Oxidation of Organic Contaminants at a B/N-Doped Diamond Flow-Through Electrode.
Environ Sci Technol
January 2025
Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
Electrochemical oxidation via in situ-generated reactive oxygen species (ROS) is effective for the mineralization of refractory organic pollutants. However, the oxidation performance is usually limited by the low yield and utilization efficiency of ROS. Herein, a B/N-doped diamond (BND) flow-through electrode with enhanced SO/OH generation and utilization was designed for electrochemical oxidation of organic pollutants in sulfate solution.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!