A5012578499- High-pressure geophysics and materials
- Advanced Condensed Matter Physics
- Magnetic and transport properties of perovskites and related materials
- Catalytic Processes in Materials Science
- Rock Mechanics and Modeling
- Machine Learning in Materials Science
- Bauxite Residue and Utilization
- Geological and Geochemical Analysis
- Heavy metals in environment
- Recycling and utilization of industrial and municipal waste in materials production
- Metal Extraction and Bioleaching
- Chromium effects and bioremediation
- Extraction and Separation Processes
- Crystal Structures and Properties
- Electrochemical Analysis and Applications
- earthquake and tectonic studies
- Gas Sensing Nanomaterials and Sensors
Peking University
2020-2025
Abstract Electron transfer is the most elementary process in nature, but existing electron rules are seldom applied to high-pressure situations, such as deep Earth. Here we show a learning model obtain electronegativity of 96 elements under arbitrary pressure, and regressed unified formula quantify its relationship with pressure electronic configuration. The relative work function minerals further predicted by electronegativity, presenting decreasing trend because pressure-induced...
Re-oxidation of Cr(III) in treated Cr-contaminated sites poses a considerable source Cr(VI) pollution, necessitating stable treatment solutions for long-term control. This study explores the immobilization into chromite, most and weathering-resistant Cr-bearing mineral, under ambient conditions. Batch experiments demonstrate chromite formation at pH above 7 Fe(III)/Cr(III) ratios exceeding 1, with Fe(III) occupying all tetrahedral sites, essential stability. A theoretical model is developed...
The complex environmental conditions at Cr-contaminated sites, characterized by uneven ion distribution, oxidants competition, and limited solid-phase mobility, lead to inadequate mixing of Fe-based reducing agents with Cr, posing significant challenges the effectiveness Cr remediation through Cr-spinel precipitation. This study investigates distinct roles Fe(II), Fe(III), Cr(III) in crystallization under ambient temperature pressure. X-ray diffraction, scanning electron microscopy,...
In the present study, we extensively explored high-pressure behaviors and vibrational properties of amblygonite LiAlPO4F with elevated pressures up to 34.3 GPa based on single-crystal X-ray diffraction measurements, Raman spectroscopy, DFT calculations. The compressibility elastic were determined first. Specifically, obtained isothermal bulk modulus is 128(4) triclinic phase exhibited anisotropic compression axial βc > βa βb a ratio 1.11:1.00:1.20. spectra showed no indication...
Extensive AO2-type transition metal (TM) oxides are experimentally determined or theoretically predicted to adopt the pyrite-type (Pa3̅) structure at different pressures, but their physical and chemical properties largely unknown. Our theoretical calculations demonstrate that interpolyhedral O–O bond is formed in CoO2 with low-spin Co2+ similar case of FeO2, whereas ferromagnetic CrO2 antiferromagnetic MnO2 belong dioxides separate O2– anions. The oxidation state cation potential formation...