A5051112447- Plant Growth Enhancement Techniques
- Porphyrin and Phthalocyanine Chemistry
- Soil Carbon and Nitrogen Dynamics
- Composting and Vermicomposting Techniques
- Isotope Analysis in Ecology
- Polysaccharides and Plant Cell Walls
- Microbial bioremediation and biosurfactants
- Microbial Community Ecology and Physiology
- Polysaccharides Composition and Applications
- Microbial Fuel Cells and Bioremediation
- Marine and coastal ecosystems
- Advanced oxidation water treatment
- Humic Substances and Bio-Organic Studies
- Electrochemical sensors and biosensors
- Porphyrin Metabolism and Disorders
- Geochemistry and Elemental Analysis
- Biocrusts and Microbial Ecology
- Pesticide and Herbicide Environmental Studies
- Polymer-Based Agricultural Enhancements
- Radioactive contamination and transfer
- Allelopathy and phytotoxic interactions
- Microplastics and Plastic Pollution
- Seedling growth and survival studies
- Chromium effects and bioremediation
- Supramolecular Chemistry and Complexes
University of Naples Federico II
2012-2024
Abstract Background We applied Fourier-Transformed Infrared Spectroscopy (FTIR) techniques in combination with selective humus extractions to investigate situ the chemical features of organic matter three soil profiles recently developed from Dutch sand dunes, under well-documented vegetation sequence and containing a relatively simple mineral-organic system. Water-soluble alkaline-soluble extracts were also studied match changes residues. Results Diffuse Reflectance Fourier Transform...
Abstract Facing an exploding population growth with consequent increase of agriculture intensification, new chemical technologies are being sought to limit organic matter losses and reduce land degradation. Here, we report that effective carbon sequestration in different cropped soils Italy is obtained by situ photo‐oxidative coupling among soil humic molecules, when catalyzed under solar irradiation a water‐soluble biomimetic iron‐porphyrin catalyst amended field soils. A 3‐year long study...
Humic acids (HA) exhibit fascinating multifunctional features, yet degradation phenomena as well poor stability in aqueous environments strongly limit their use. Inorganic nanoparticles are emerging a powerful interface for the development of robust HA bio-hybrid materials with enhanced chemical and tunable properties. Hybrid organic-inorganic SiO2/HA nanostructures were synthesized via an in-situ sol-gel route, exploiting both physical entrapment coupling. The latter was achieved through...
The meso-tetra(2,6-dichloro-3-sulfonatophenyl)porphyrinate of manganese(III) chloride [Mn-(TDCPPS)Cl] biomimetic catalyst immobilized on spacer-functionalized kaolinite clay mineral was employed in the oxidative coupling reaction a dissolved humic acid (HA) suprastructure with either chemical (H2O2) or UV-light oxidation. changes molecular size matter subjected to catalyzed were followed by high-performance exclusion chromatography (HPSEC) UV-vis and refractive index (RI) detectors series,...
Abstract Humic susbtances (HS) are increasingly applied as biostimulants in agriculture, though their mechanism of action is not yet completely understood due to complex and heterogeneous composition. Here, we isolated thirteen different humic fulvic acids from sources, such soils, composts, peat, leonardite lignite, characterized the distribution carbon components by 13 C-CPMAS–NMR spectroscopy. Callus Pinus Laricio , a model plant species, was treated with extracts its growth content...
Sustainable and precision agriculture requires that agroproducts be employed for plants' benefits with maximum efficiency reduced environmental hazard. Since hydrogels may become efficient vehicles agroproduct spreading, we prepared novel humo-pectic by first blending low methyl-esterified pectin either humic substances (HS) extracted from different composted biomasses or humic-like (HULIS) depolymerized lignocellulose waste derived biorefinery activities and, then, cross-linking calcium...
Bioremediation is a low-cost technology, whose efficacy often enhanced with preliminary mild physical–chemical remediation methods. A further advantage of bioremediation resides in its eco-compatibility and, thus, sustainability. Two autochthonous microbial strains, Methylobacterium populi VP2 and Aspergillus sydowii VP4, were isolated from soil highly contaminated industrial site used to degrade the aqueous extract contaminants (AEC) obtained same polluted soil. The AEC incubation both...
Abstract Aqueous solutions of humic acid (HA) derivatized by a catalyzed O-alkylation reaction with methyl, pentyl, and benzyl groups at 40, 60, 80% total HA acidity were used to wash off polycyclic aromatic hydrocarbons (PAHs) from two contaminated soils. The enhanced surfactant properties enabled the alkylated remove phenanthrene, anthracene, fluoranthene, pyrene both soils more extensively than original unmodified HA, 60% benzylation generally showing greatest soil washing efficiency. For...
The influence of pH on the formation host-guest complexes between cucurbit[7]uril (CB[7]) macrocyclic host and three auxin plant hormones, namely indole-3-acetic acid (IAA), 2-naphthalene acetic (2-NAA), 2,4-dichlorophenoxyacetic (2,4-D), was studied by 1H NMR relaxation experiments. Only protonated auxins formed inclusion with CB[7], exhibiting preferential encapsulation aromatic part inside cavity, orientation carboxyl group towards carbonyl-laced portals CB[7]. At values above pKa values,...
Two humic acids extracted from a volcanic soil (HA1) and leonardite (HA2) were used to form insoluble complexes with iron metals. To simulate the rhizospheric processes that displace of molecules solubilize humeome, iron–humates treated solution siderophore deferoxamine mesylate (DFOM) mixture citric, oxalic, tartaric ketoglutaric acids, at different concentrations contact times. Results showed removal varied depending on concentration extractants extraction At large concentration, organic...
Agricultural practices that enhance organic matter content in soil can play a central role sequestering carbon (SOC) and reducing greenhouse gases emissions. We used water-soluble iron-porphyrin to catalyze directly situ oxidative polymerization of the presence H2O2 oxidant, with aim OC stabilization, and, consequently, reduce CO2 emissions from soil. The occurred SOC stabilization was assessed by monitoring aggregate stability, distribution aggregates, respiration, extraction yields humic...
We prepared humo-pectic hydrogels through ionotropic gelation by crosslinking natural pectins of different degree methyl-esterification with either humic substances (HS) extracted from cow manure compost or humic-like (HULIS) depolymerized lignocellulose biorefinery waste. The were characterized solid-state 13C-NMR spectroscopy, scanning electron microscopy, spectroscopic magnetic resonance imaging and rheological analyses. Their ability to work as controlled release systems was tested...