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Revealing Crucial Influences of Boron Support on Regulating Geometric and Electronic Structures of 3D Catalyst for Hydrogen Evolution and Oxygen Reduction Reactions.
Nano Lett
January 2025
Institute of Future Technology, Southwest Jiaotong University, Chengdu 610031, China.
Building insights into the structure-performance relationship of catalysts has been emphasized recently. However, it remains a challenge due to catalysts' various and complex structures, especially the easily overlooked influence of the support material. Here, we reveal the crucial influences of boron introduction on synthesizing 3D carbon nanotube monoliths with embedded multistate Co metals, i.
View Article and Find Full Text PDFA Nudge to the Truth: Atom Conservation as a Hard Constraint in Models of Atmospheric Composition Using a Species-Weighted Correction.
ACS EST Air
January 2025
Department of Earth Sciences, University of Southern California, Los Angeles, California 90089, United States.
Computational models of atmospheric composition are not always physically consistent. For example, not all models respect fundamental conservation laws such as conservation of atoms in an interconnected chemical system. In well performing models, these unphysical deviations are often ignored because they are frequently minor, and thus only need a small nudge to perfectly conserve mass.
View Article and Find Full Text PDFAtmospheric Deposition of Microplastics in South Central Appalachia in the United States.
ACS EST Air
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Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States.
Due to the increased prevalence of plastic pollution globally, atmospheric deposition of microplastics (MPs) is a significant issue that needs to be better understood to identify potential consequences for human health. This study is the first to quantify and characterize atmospheric MP deposition in the Eastern United States. Passive sampling was conducted at two locations within the Eastern United States, specifically in remote South Central Appalachia, from March to September 2023.
View Article and Find Full Text PDFMetal Mobilization from Thawing Permafrost Is an Emergent Risk to Water Resources.
ACS ES T Water
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Department of Geological Sciences, University of Saskatchewan, 114 Science Pl, Saskatoon, Saskatchewan, Canada, S7N 5E2.
Metals are ubiquitous in Earth's Critical Zone and play key roles in ecosystem function, human health, and water security. They are essential nutrients at low concentrations, yet some metals are toxic at a high dose. Permafrost thaw substantially alters all the physical and chemical processes governing metal mobility, including water movement and solute transport and (bio)geochemical interactions involving water, organic matter, minerals, and microbes.
View Article and Find Full Text PDFLead Adsorption and Desorption at the Barite (001) Surface in the Presence of EDTA.
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School of Earth and Environmental Sciences, Queens College, City University of New York, Queens, New York 11367, United States.
Scaling minerals, such as barite, can cause detrimental consequences for oil/gas pipelines and water systems, but their formation can be inhibited by organic chelators such as ethylenediaminetetraacetic acid (EDTA). Here, we resolve how EDTA affects sorption and desorption of Pb at the barite (001) surface using a combination of X-ray scattering and microscopy measurements. In the presence of EDTA, Pb incorporated in the topmost part of the barite surface and adsorbed as inner-sphere complexes on the surface.
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