Fertilizers, 2. Types

Kiiski, Harri; Dittmar, Heinrich; Drach, Manfred; Vosskamp, Ralf; Trenkel, Martin E.; Gutser, R.; Steffens, Günter

doi:10.1002/14356007.n10_n01.pub2

Cited by 6 publications

(1 citation statement)

References 102 publications

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“…The GO small size, the ability to diffuse through membranes, and the biocompatibility to create scaffolds Molecules 2023, 28, 4577 2 of 15 makes it a nanoparticle of election for investigation to different biomedical applications such as drug delivery, biosensors, and tissue engineering [7,8]. The large surface area provided by the two-dimensional structure, high reactivity, and ability to adsorb a wide range of pollutants, makes GO suitable for removal of heavy metals, organic contaminants, water purification, and desalination [4,[9][10][11]. The high surface area, reactivity, and stability are also important for GO application in agriculture, such as to improve soil water retention and nutrient availability, promote plant growth by photosynthesis enhancement and nutrient uptake by plants, and targeted delivery of agrochemicals to crops, reducing the amount of chemicals needed and minimizing environmental impact [12,13].…”

Section: Introductionmentioning

confidence: 99%

Effects of Graphene Oxide Nanosheets in Freshwater Biofilms

et al. 2023

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Graphene oxide (GO) properties make it a promising material for graphene-based applications in areas such as biomedicine, agriculture, and the environment. Thus, its production is expected to increase, reaching hundreds of tons every year. One GO final destination is freshwater bodies, possibly affecting the communities of these systems. To clarify the effect that GO may impose in freshwater communities, a fluvial biofilm scraped from submerged river stones was exposed to a range (0.1 to 20 mg/L) of GO concentrations during 96 h. With this approach, we hypothesized that GO can: (1) cause mechanical damage and morphological changes in cell biofilms; (2) interfere with the absorption of light by biofilms; (3) and generate oxidative stress, causing oxidative damage and inducing biochemical and physiological alterations. Our results showed that GO did not inflict mechanical damage. Instead, a positive effect is proposed, linked to the ability of GO to bind cations and increase the micronutrient availability to biofilms. High concentrations of GO increased photosynthetic pigment (chlorophyll a, b, and c, and carotenoids) content as a strategy to capture the available light more effectively as a response to the shading effect. A significant increase in the enzymatic (SOD and GSTs activity) and low molecular weight (lipids and carotenoids) antioxidant response was observed, that efficiently reduced oxidative stress effects, reducing the level of peroxidation, and preserving membrane integrity. Being complex entities, biofilms are more similar to environmental communities and may provide more accurate information to evaluate the impact of GO in aquatic systems.

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Section: Introductionmentioning

confidence: 99%

Effects of Graphene Oxide Nanosheets in Freshwater Biofilms

et al. 2023

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Reduction ofCO₂to Formic Acid

Bediako

Qian

Han

2022

The Chemical Transformations of C1 Compounds

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Direct Evidence of Subsurface Oxygen Formation in Oxide‐Derived Cu by X‐ray Photoelectron Spectroscopy

et al. 2021

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Subsurface oxygen has been proposed to be crucial in oxide‐derived copper (OD‐Cu) electrocatalysts for enhancing the binding of CO intermediates during CO2 reduction reaction (CO2RR). However, the presence of such oxygen species under reductive conditions still remains debated. In this work, the existence of subsurface oxygen is validated by grazing incident hard X‐ray photoelectron spectroscopy, where OD‐Cu was prepared by reduction of Cu oxide with H2 without exposing to air. The results suggest two types of subsurface oxygen embedded between the fully reduced metallic surface and the Cu2O buried beneath: (i) oxygen staying at lattice defects and/or vacancies in the surface‐most region and (ii) interstitial oxygen intercalated in metal structure. This study adds convincing support to the presence of subsurface oxygen in OD‐Cu, which previously has been suggested to play an important role to mitigate the σ‐repulsion of Cu for CO intermediates in CO2RR.

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Fertilizers, 2. Types

Cited by 6 publications

References 102 publications

Effects of Graphene Oxide Nanosheets in Freshwater Biofilms

Effects of Graphene Oxide Nanosheets in Freshwater Biofilms

Reduction ofCO₂to Formic Acid

Direct Evidence of Subsurface Oxygen Formation in Oxide‐Derived Cu by X‐ray Photoelectron Spectroscopy

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Fertilizers, 2. Types

Cited by 6 publications

References 102 publications

Effects of Graphene Oxide Nanosheets in Freshwater Biofilms

Effects of Graphene Oxide Nanosheets in Freshwater Biofilms

Reduction ofCO2to Formic Acid

Direct Evidence of Subsurface Oxygen Formation in Oxide‐Derived Cu by X‐ray Photoelectron Spectroscopy

Contact Info

Product

Resources

About

Reduction ofCO₂to Formic Acid