Linear Dependence of Potential Drop at the Passive Film/Solution Interface on Film-Formation Potential and Ph: Combining First-Principles Calculations with Experiments DOI
Dihao Chen, Jinshan Pan, Feixiong Mao

et al.

Published: Jan. 1, 2024

Herein, we develop a model presenting the linear dependence of potential drop at passive film/solution interface (φf/s) on both and pH. By analyzing surface charge performing first-principles calculations, provide insights into effect pH φf/s, relation between φf/s with beyond Nernst that is attributed to role point defects in zero film iron. Two methods are suggested determine values α β. The study passivity iron borate buffer solutions validates our model.

Language: Английский

Adsorption and molecular transformation mechanisms of mercury sulfide on mackinawite surfaces: A DFT-D3 study DOI Creative Commons
Fayang Guo, Yi Zhang, Yuxiang Mao

et al.

Chemical Engineering Journal Advances, Journal Year: 2025, Volume and Issue: unknown, P. 100724 - 100724

Published: March 1, 2025

Language: Английский

Citations

1
Spontaneous Abiotic Reduction of Arsenate to Arsenite Mediated by Structural Fe(II) Resulting from Abundant Oxygen Vacancy Clusters in Poorly Crystalline Ferrihydrite in Drought Environments DOI

Yongjin Xiang,

Jingtao Hou, Lu Ren

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: March 5, 2025

The reduction of As(V) to As(III) has been proposed as an undesirable process, increasing the mobility and toxicity arsenic. Although most studies revealed that occurs in aqueous phase, it remains unclear whether abiotic driven by minerals drought environments also exists. In this study, we examined transformation mediated ferrihydrite during drying processes using high-resolution X-ray photoelectron spectroscopy (XPS) absorption near edge structure (XANES) analyses. results nearly 40.8% ferrihydrite-sorbed was transformed after placing As(V)-adsorbed solids a drought-tolerant environment for 7 days. occurred under both oxic anoxic conditions, with rate being higher atmosphere than oxygen air. Chemical analysis presence structural Fe(II) ferrihydrite, which attributed abundance vacancy clusters, evidenced positron annihilation lifetime (PAL) analysis. Fe L-edge XANES DFT calculations demonstrated dried played vital role reduction, inducing electron transfer from As atoms. findings study highlight potentially important but long-overlooked pathway at mineral surfaces conditions soils.

Language: Английский

Citations

0
Linear dependence of potential drop at the passive film/solution interface on film-formation potential and pH: Combining first-principles calculations with experiments DOI
Dihao Chen, Jinshan Pan, Feixiong Mao

et al.

Corrosion Science, Journal Year: 2024, Volume and Issue: unknown, P. 112437 - 112437

Published: Sept. 1, 2024

Language: Английский

Citations

3
Application of metallic minerals in wastewater treatment: A review DOI
Xiao Wei Sun,

Yinghao Tang,

Rui Li

et al.

Journal of Water Process Engineering, Journal Year: 2024, Volume and Issue: 68, P. 106385 - 106385

Published: Oct. 31, 2024

Language: Английский

Citations

2
Interaction between metal(loid)s and soil mineral-organic matter associations DOI
Xinyang Li, Michael Schindler, Jiawen Zhou

et al.

Critical Reviews in Environmental Science and Technology, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 24

Published: Dec. 2, 2024

Mineral-organic matter (OM) associations sequester metal(loid)s in the environment, controlling their mobility and bioavailability soils. This review describes processes mechanisms operating at interfaces between OM mineral phases mineral-metal(loid)-OM metal(loid)-OM-mineral associations. It will demonstrate assumption that interact with "pure" matrixes soils is overly simplistic as numerous interactions such adsorption, precipitation incorporation of on surfaces, or within minerals can occur. For example, multi-layer organic compounds control regulate carbon sequestration. To simplify complex metal(loid)-mineral-OM interactions, we propose five nanometric for sequestration by mineral-OM associations: I. heterogeneous nucleation metal(loid)s-bearing nanomaterials (NMs) matrix, II. NMs via reduction metal(loid) species OM/mineral III. transformation preexisting NMs, IV. inclusions V. diffusion homogeneous distribution metals matrix. helps to develop potential materials (a) remediation techniques allow effective removal metal pollutants from water soil (b) biomass storage sequestrate stabilize terrestrial systems thus help fight current climate change. Future studies need identify spatial functional complexity structure composition associations, which adsorbed incorporated transform during multi-dynamic processes.

Language: Английский

Citations

1
Linear Dependence of Potential Drop at the Passive Film/Solution Interface on Film-Formation Potential and Ph: Combining First-Principles Calculations with Experiments DOI
Dihao Chen, Jinshan Pan, Feixiong Mao

et al.

Published: Jan. 1, 2024

Herein, we develop a model presenting the linear dependence of potential drop at passive film/solution interface (φf/s) on both and pH. By analyzing surface charge performing first-principles calculations, provide insights into effect pH φf/s, relation between φf/s with beyond Nernst that is attributed to role point defects in zero film iron. Two methods are suggested determine values α β. The study passivity iron borate buffer solutions validates our model.

Language: Английский

Citations

0