Ernesto Mesto

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• Chemistry
• Professor (Assistant) at University of Bari Aldo Moro

p-Type-semiconductor Cu 2 O facets {111} (octahedral) and {110} (rhombododecahedral) present a higher photo (electro)catalytic activity towards CO2RRs (CO 2 Reduction Reaction) than {100} (cubic). Two frustules (the siliceous skeleton of microalgae Diatoms) having a different morphology, namely: Navicula sp. (Nsp, elongated pore-shape) and Conticri...

Red muds (RMs) from three storage basins at Portovesme (Sardinia, Italy) were investigated combining inductively coupled plasma optical emission spectrometry (ICP-OES), Inductively Coupled Plasma Mass Spectrometry (ICP-MS), X-ray Powder Diffraction (XRPD), Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM). The oxide comp...

Amongst the various strategies studied to reduce polluting agents in water, both from anthropogenic and natural sources, adsorption processes are among the most widespread techniques. Layered double hydroxides (LDH, anionic adsorbers) play a fundamental role in the treatment of industrial wastewater, which often contains both anionic and cationic s...

Introduction The present article reports on a case study aimed at improving STEAM education in secondary schools. It discusses the use of sonification as a teaching strategy to integrate music into science learning, using different approaches from data audification to parameter mapping into aural models and to the rewriting of song lyrics based on...

An innovative catalytic system for biodiesel synthesis starting from waste biomass (waste cooking oil, WCO) in the presence of waste material (steel slags) as the catalyst under microwave irradiation is described. The reaction conditions were optimized by using response surface methodology (RSM) based on Box‐Behnken Design (BBD) taking time, temper...

Negli ultimi anni, diversi studi hanno applicato la sonificazione alla didattica e all’apprendimento delle discipline scientifiche STEAM (Science, Technology, Engineering, Art, Mathematics). Il presente studio esplorativo si propone di investigare il ruolo della sonificazione sull’apprendimento di concetti scientifici complessi riguardanti i crista...

The thermal behaviour of fluorcarletonite, KNa 4 Ca 4 Si 8 O 18 (CO 3 ) 4 (F,OH)⋅H 2 O, from the charoitites of the Severny district at the Malyy Murun massif, Murun complex, NW Aldan Shield, Siberia, Russia, has been investigated in order to understand the temperature-induced changes in the crystal structure of this rare silicate. The study has be...

The development of novel strained spiro heterocycles (SSHs) as bioisosteres for aromatic or non‐strained aliphatic rings is highly sought after for improving drug design. Their high molecular rigidity and predictable vectorization can enhance drug‐likeness, target selectivity and clinical success. Towards this goal, 1‐oxa‐2,6‐diazaspiro[3.3]heptane...

Over the centuries, society has faced a number of natural resource challenges through a combination of three approaches: developing new sources, using resources more efficiently, and developing substitute materials. A recent resource challenge is to guarantee supplies of critical metals (CMs) that perform essential functions in modern engineered ma...

This research explores the major element control on the distribution of critical metals (CM) in red muds (RM), the residues of the Bayer process developed on bauxite ore, sampled at the Porto Vesme disposal site, Sardinia, Italy. RM represent an environmental challenge due to their high alkalinity and storage issues. The relationships between major...

The synthesis and crystallographic analysis of the title compound, C9H9N3O2S, are reported. The compound crystallizes in the monoclinic space group P21/c, revealing characteristic bond lengths and angles typical of thio­semicarbazone groups. The supra­molecular organization primarily arises from hydrogen bonding and π–π stacking inter­actions, lead...

Following our previous studies aimed at the valorization of cellulose waste and glycerol, biobased polyols-polyesters were synthesized using both a “green approach” and a novel heterogeneous catalyst based on Scandium...

The controlled supply of bioactive molecules is a subject of debate in animal nutrition. The release of bioactive molecules in the target organ, in this case the intestine, results in improved feed, as well as having a lower environmental impact. However, the degradation of bioactive molecules’ in transit in the gastrointestinal passage is still an...

In this work, a comprehensive investigation of the photoinduced processes and mechanisms linked to the luminescence of a novel nonperchlorinated Thiele hydrocarbon (TTH) is presented. Despite the comparable diradical character of TTH (y0 = 0.32-0.44) and the unsubstituted Thiele hydrocarbon (TH) (y0 = 0.30), the polyhalogenated species is inert and...

The thermal behaviour of fedorite from the Murun massif, Russia, has been investigated by means of electron probe microanalysis (EPMA), differential thermal analysis (DTA), thermogravimetry (TG), in situ high-temperature single-crystal X-ray diffraction (HT-SCXRD), ex situ high-temperature Fourier-transform infrared spectroscopy (HT-FTIR). The empi...

A synthetic approach to bond lysozyme (LY) to commercial natural carriers, namely clay minerals (bentonite, BN; and sepiolite, SP) and commercial zeolite (Phil 75®, PH), already in use in feed formulation, is proposed. The synthetic route, which implies solid–liquid adsorption, is a simple and effective way for preparing hybrid materials characteri...

The present work is part of a systematic mineralogical and petrographic characterization of mica-bearing xenoliths from Somma-Vesuvius volcano (Roman Magmatic Province, southern Italy). Skarns, composite skarns-marbles and cumulates from Pompeii Plinian eruption (AD 79), and skarns and syenite from Avellino eruption (3945 ± 10 cal yr BP) were inves...

Strontium-substituted Ca10(PO4)6(OH)2 hydroxyapatite (HAp) powders, with Sr wt% concentrations of 2.5, 5.6 and 10%, were prepared by a solid-state synthesis method. The chemical composition of the samples was accurately evaluated by using inductively coupled plasma (ICP) spectroscopy. The morphology of the samples was analyzed via optical microscop...

An X-Ray Absorption Spectroscopy (XAS) study of the local structural environment of La ions hosted in montmorillonite is presented. The structural location of La ions in the host phases and whether they are incorporated in the structure or adsorbed at the surface has been assessed. Two clays from the Clay Mineral Society repository (STx and SWy) in...

Treatment of wastewater pollution is a critical issue in the context of growing population and industrialization. Actual treatment methods are expensive and not fully effective and rely on fossil fuel-derived chemicals, thus calling for alternative adsorption methods on natural materials such as hemp. Industrial hemp (Cannabis sativa Linn) is a hig...

FINEAU (2021–2024) is a trans-disciplinary research project involving French, Serbian, Italian, Portuguese and Romanian colleagues, a French agricultural cooperative and two surface-treatment industries, intending to propose chènevotte, a co-product of the hemp industry, as an adsorbent for the removal of pollutants from polycontaminated wastewater...

The paper presents the results of the analysis of the geo-chemo-mechanical data gathered through an innovative multidisciplinary investigation campaign in the Mar Piccolo basin, a heavily polluted marine bay aside the town of Taranto (Southern Italy). The basin is part of an area declared at high environmental risk by the Italian government. The cu...

The present work reports the crystal-chemical characterization of micas from the Monte Arsiccio and Buca della Vena mines (Apuan Alps, Italy) through electron microprobe analysis, single crystal X-ray diffraction, and Raman spectroscopy. The sample from the Monte Arsiccio mine can be classified as an intermediate member of the yangzhumingite-fluor...

Nitrogen (N) seeding is routinely applied in tokamaks with tungsten (W) walls to control the power exhaust toward the divertor. Open questions, concerning the interaction of N with W, are the influence of ion energy and W temperature on retention of implanted N and the erosion by deuterium (D) of the tungsten nitride being formed. Moreover, the ext...

The present study describes the first example of utilization of a natural clay mineral as catalyst in a process addressed to chemical valorization of poly-[bisphenol A carbonate] (PC; (1)) wastes. A natural clinochlore was investigated for the first time as the catalyst of the hydrolysis reaction of 1, a potential route to chemical recycling of was...

The crystal chemistry and thermal behavior of Fe-carpholite from the Pollino Massif have been investigated by a multimethodic approach. A combination of optical microscopy, scanning electron microscopy, Raman spectroscopy, thermal analysis, room temperature single-crystal X-Ray diffraction and high-temperature X-Ray powder diffraction was employed....

Nowadays, stabilization/solidification (S/S) applied to the treatment of contaminated marine sediments (CMSs) represents a key technology for the production of new materials for civil engineering. Literature has shown the feasibility of CMSs recycling, although sediment needs pre-treatments for the removal of organic matter and to improve the mecha...

Europium-doped hydroxyapatite Ca10(PO4)6(OH)2 (3% mol) powders were synthesized by an optimized chemical precipitation method at 25 °C, followed by drying at 120 °C and calcination at 450 °C and 900 °C. The obtained nanosized crystallite samples were investigated by means of a combination of inductively coupled plasma (ICP) spectroscopy, powder X-r...

In the present study the Fe-carpholite from the Pollino Massif, southern Apennines (Liguride Complex, Frido Unit) has been investigated by combining Secondary Electron Microscopy (SEM), Single Crystal X-Ray Diffraction (SCXRD), µRaman spectroscopy and in situ High Temperature X-Ray Powder Diffraction (HTXRPD). Fe-Mg carpholite is known as an index...

Asymmetric Schiff base manganese(III) complexes involving salen ligands, N,N'‐bis(salicylidene)2,3‐diaminopyridine, N,N'‐bis(3‐methoxysalicylidene)2,3‐diaminopyridine, N,N'‐bis(3,5‐di‐tert‐butylsalicylidene)2,3‐diaminopyridine and N,N'‐bis(3,5‐di‐chloro‐salicylidene)2,3‐diaminopyridine were prepared and their catalytic activity was investigated in...

Agrellite is a rare inosilicate, having a crystal structure characterized by SiO4-tetrahedral tubes located between continuous wall layers formed by edge-sharing Ca-polyhedra. A detailed crystal chemical and physical study of agrellite specimens is carried out by means of electron probe microanalysis, Fourier transform infrared spectroscopy, electr...

The structural model and chemical composition of vlasovite from the Burpala massif (Russia) have been determined using X-ray diffraction methods and electron probe microanalysis. The crystal structure has been refined in the sp. gr. Cc to R = 1.4% (Rw = 1.8%) with the following unit-cell parameters: a = 11.0396(3) Å, b = 10.1042(2) Å, c = 8.5696(2)...

The antibacterial activity of the S-unsubstituted- and S-benzyl-substituted-2-mercapto-benzothiazoles 1-4 has been evaluated after complexation with Methyl-β-Cyclodextrin (Me-β-CD) or incorporation in solid dispersions based on Pluronic® F-127 and compared with that of the pure compounds. This with the aim to gain further insights on the possible m...

The dehydration process of armstrongite, CaZr[Si6O15]·2H2O, from Khan Bogdo deposit (Gobi, Mongolia) was studied by in-situ High Temperature Single Crystal X-ray Diffraction (HT SCXRD) in air from 25 to 500 °C and in N2 atmosphere from 25 to 375 °C. An abrupt discontinuity in the trend of the a and b parameters and of the unit-cell volume was obser...

The high-pressure behavior of a natural armstrongite [(Ca0.96Ce0.01Yb0.01)Zr0.99Si6O14.97·2.02H2O, a∼14.03 Å b∼14.14 Å c∼7.85 Å β∼109.4° Sp. Gr. C2/m], a microporous heterosilicate, has been studied by single-crystal X-ray diffraction with a diamond-anvil cell up to 8 GPa, using the methanol:ethanol:H2O = 16:3:1 mixture as a pressure-transmitting f...

Biological processes using microorganisms for nanoparticle synthesis are appealing as eco-friendly nanofactories. The response of the photosynthetic bacterium Rhodobacter sphaeroides to gold exposure and its reducing capability of Au(III) to produce stable gold nanoparticles (AuNPs), using metabolically active bacteria and quiescent biomass, is rep...

The dehydration of armstrongite from Khan Bogdo (Mongolia) was investigated by combining thermal analysis, in situ HT X-ray powder diffraction (XRPD) and Fourier Transform InfraRed (FTIR) spectroscopy. The process starts at ∼380 °C and is completed within few tenths of degrees. It involves a mass loss of 6.1 wt% and a cell volume decrease of 7%. Ar...

Nel Museo di Scienze della Terra dell'Università di Bari è esposto da circa 20 anni lo scheletro incompleto e parzialmente articolato di un rettile cretacico rinvenuto presso Ruvo di Puglia, nelle Murge, in una successione appartenente alla Piattaforma Carbonatica Apula. Solo recentemente, sullo scheletro, e sulla lastra originale che lo contiene,...

An incomplete and partially articulated skeleton of a squamate has been found in an upper Cenomanian succession of the Apulia Carbonate Platform cropping out in the "Ruvo di Puglia" quarry district (Murge, SE Italy). The limestone slab with these remains is exposed in the Earth Science Museum of Bari University (Italy). A multidisciplinary research...

A crystal chemical study of narsarsukite from the Murun alkaline massif, Russia has been carried out combining single-crystal X-ray diffraction, electron microprobe analyses, micro-Fourier transform infrared (FTIR) spectroscopy and X-ray photoelectron spectroscopy (XPS). The narsarsukite single crystals are tetragonal (space group I4/m) with unit-c...

Agrellites from Dara-i-Pioz (Tajikistan) and Murun (Russia) massifs were investigated by means of SCXRD and EPMA methods. The agrellites have a similar composition and common simplifi ed formula: NaCa2[Si4O10]F. The structural data, obtained for the samples, are consistent with the model of the REE-agrellite from Quebec (Canada) and do not match th...

This study presents a cross-correlated surface and near surface investigation of two phlogopite polytypes from Kasenyi kamafugitic rocks (SW Uganda) by means of advanced Atomic Force Microscopy (AFM), confocal microscopy and Raman micro-spectroscopy. AFM revealed comparable nanomorphology and electrostatic surface potential for the two mica polytyp...

A crystal chemical study of narsarsukite from the Murun alkaline massif, Russia has been carried out combining single crystal X-ray diffraction, electron microprobe analyses, micro-Fourier Transform infrared spectroscopy and X-ray photoelectron spectroscopy. The narsarsukite single crystals are tetragonal (space group I4/m) with unit cell parameter...

Khan-Bogdodeposit, armstrongite, elpidite, Zr-silicates, crystal chemistry, crystal structure, modular relationship

A series of indolenine-based croconaines has been synthesized and their molecular structure has been investigated together with their solid state organization. Ambipolar semiconducting properties have been demonstrated in thin-film transistors, suggesting croconaines as a new class of molecular materials for organic electronics.

A suite of Ti-bearing garnets from magmatic, carbonatitic, and metamorphic rocks was studied by electron probe microanalysis (EPMA), X-ray powder diffraction (XRPD), single-crystal X-ray diffraction (SCXRD), Mössbauer spectroscopy, and secondary ion mass spectrometry (SIMS) to better characterize their crystal chemistry. The studied garnets show Ti...

A transmission electron microscopy (TEM) investigation was undertaken in order to elucidate the nature of the structural disorder in a tobelite specimen from the sedimentary rocks of the Armorican sandstones (western France). This structural disorder may be the origin of residual electron-density maxima in difference-Fourier maps reported previousl...

The structures of tokkoite, K2Ca4[Si7O18OH](OH,F) and tinaksite, K2Ca2NaTi[Si7O18OH]O from Murun massif (Russia) were refined from single crystal X-ray diffraction data in the triclinic space group. Average crystallographic data are: a ~ 10.423, b ~ 12.477, c ~ 7.112 Å, ~ 89.92°, β ~ 99.68°, ~ 92.97°, and cell volume ~ 910.5 Å3 for the tokkoite;...

Fluorine-, boron-, and magnesium-rich metamorphosed xenoliths occur in the Campanian Ignimbrite (CI) deposits at Fiano(southern Italy), at about 50 km northeast of the sourced volcanic area. These rocks originated from Mesozoic limestones of the Campanian Apennines, embedded in a fluid flow. The studied Fiano xenoliths consist of ten fluorophlogopi...

Two mineral clays of the montmorillonite group were tested as sorbents for the removal of Rare Earths (REs) from liquid solutions. Lanthanum and neodymium model solutions were used to perform uptake tests in order to: (a) verify the clays sorption capability, (b) investigate the sorption mechanisms and (c) optimize the experimental parameters, such...

Two mineral clays of the montmorillonite group were tested as sorbents for the removal of Rare Earths (REs) from liquid solutions. Lanthanum and neodymium model solutions were used to perform uptake tests in order to: (a) verify the clays sorption capability, (b) investigate the sorption mechanisms and (c) optimize the experimental parameters, such...

Narsarsukite, [Na2(Ti,Fe)Si4(O,F)11], is a rare titanosilicate mineral usually found in alkali pegmatitic rocks in Narsarsuk, Greenland. Titanosilicate minerals represent excellent materials for selective recovery of valuable ions from waste (Su & Balmer, 2000). They also exhibit exceptional catalytic activities and selective for oxidation reaction...

Orange and green phosphorescent heteroleptic iridium complexes 1 and 2 [(1): iridium(III)bis[2-(5′-benzylsulfonyl)phenylpyridinato-N,C2′](2,4-decanedionate) and (2): iridium(III)bis[2-(5′-benzylsulfonyl-3′,6′-difluoro)phenylpyridinato-N,C2′](2,4-decanedionate)] are used as dopant emitters in solution processed organic light-emitting diodes. These e...

Gold nanoparticles stabilized on metal oxide supports have found a wide range of applications especially in heterogeneous catalysis and gas sensing. A facile methodology for the in situ electrodecoration of gold nanoparticles on metal oxide supports is presented herein. Metal oxides such as indium oxide (In2O3) and zirconia (ZrO2) nanoparticles are...

This study reports a petrographic and crystal chemical analysis of three types of micas (yangzhumingite, light brown phlogopite and dark brown phlogopite) found in a lamproitic dyke at the Kvaløya Island (North Norway). The study was carried out integrating different analytical techniques: electron microprobe, single crystal X-ray diffraction, indu...

The results of a combined electron probe microanalysis, single-crystal X-ray diffraction, and Fourier transform infrared study of a crystal of armstrongite from Khan Bogdo deposit (Gobi, Mongolia) are reported. Major element analysis provided (wt%): CaO 9.2(1), ZrO2 20.9(2), and SiO2 62.5(2). Significant concentrations of REE (0.45 wt%) were also d...

A general method to synthesize conjugated molecules with a benzofulvene core is reported. Up to four conjugated substituents have been introduced via a three-step sequence including (1) synthesis of 1,2-bis(arylethynyl)benzenes; (2) exo-dig electrophilic cyclization promoted by iodine; and (3) cross-coupling reaction of the resulting bis-iodobenzof...

Muscovite, KAl2[AlSi3O10](OH)2, is a common rock-forming mineral in igneous and metamorphic-rocks, sediments, hydrothermal alteration and ore deposits. The site between two adjacent T-O-T (tetrahedral-octahedral-tetrahedral) layers is shared between K and NH4 in all proportions leading to the building of the "ammonium micas". In this work three tob...

The determination of the oxidation state and structural role of transition metals in minerals is a crucial challenge. XPS has proven to have a great potential in probing the site distribution and chemical states of Fe and Ti transition elements, provided that the right method to process the spectra is used. XPS spectra of these elements have the 2p...

The structure, structural disorder and chemistry of miserite from the charoite-bearing rocks of the Murun massif (Russia) and from alkaline-syenite pegmatitic rocks of the Dara-i-Pioz massif (Tajikistan) were investigated employing a combination of electron microprobe, single crystal diffraction and micro-Fourier transform infrared spectroscopy ana...

Muscovite, KAl 2 [AlSi 3 O 10 ](OH) 2 , is a common rock-forming mineral in igneous and metamorphic-rocks, sediments, hydrothermal alteration and ore deposits. The site between two adjacent TO -T (tetrahedral-octahedral-tetrahedral) layers is shared between K and NH 4 in any proportion leading to the building of the " ammonium micas ". Mica with: (...

The title complex, [Ir2(C18H13FNO2S)4Cl2]·C7H8, was crystallized from dichloro­methane solution under a toluene atmos­phere. It is a dimeric complex in which each of the two IrIII centres is octa­hedrally coordinated by two bridging chloride ligands and by two chelating cyclo­metalated 2-(4-benzyl­sulfonyl-2-fluorophenyl)pyridine ligands. The cryst...

A 3T mica polytype from Kasenyi (south west Uganda) kamafugite was studied by Electron Probe Microanalysis (EPMA), Single Crystal X-ray Diffraction (SCXRD), micro-Fourier Transform Infrared Spectoscopy (FTIR) and X-ray Photoelectron Spectroscopy (XPS) in order to characterize its crystal chemistry and the relationships with samples from the same ro...

The crystal structures of 8-phen­oxy­carbonyl-1,8-diaza­bicyclo­[5.4.0]undec-7-enium chloride, C16H21N2O2⁺·Cl⁻, (I), and 8-meth­oxy­carbonyl-1,8-diaza­bicyclo­[5.4.0]undec-7-enium chloride monohydrate, C11H19N2O2⁺·Cl⁻·H2O, (II), recently reported by Carafa, Mesto & Quaranta [Eur. J. Org. Chem. (2011), pp. 2458–2465], are analysed and discussed with...

The existence of a lot of worldwide pentachlorophenol-contaminated sites has induced scientists to concentrate their effort in finding ways to degrade it. Therefore, an effective tool to decompose it from soil mixtures is needed. In this work the efficiency of the phyllomanganate birnessite (KBi) in degrading pentachlorophenol (PCP) through mechano...

The 2M(1)-phlogopite from the potassic gabbronorite (Black Hill, Australia) has been studied by electron microprobe and single-crystal X-ray diffraction analyses. The crystal-chemical formula was (K0.95Na0.01)(Al0.15Mg1.27Fe1.162+Fe0.043+Ti0.384+)(Si2.85Al1.15)O10.76F0.11Cl0.03OH1.10. The structural analysis has shown that the crystal has the cell...

In the present work, crystal chemical variations between 1M and 2M 1 phlogopites coexisting in the same rock sample from kamafugite of Kasenyi (southwest Uganda, west branch of the East African Rift) were explored by electron probe microanalyses, single crystal X-ray diffraction and Mössbauer spectroscopy. Chemical analyses revealed close similarit...

The article was pubblished as Key Research Article on EARTHEMPHASIS - Center for Top Earth and Environmental Science Research (http://earthemphasis.com/key-research-articles/tobelite-and-nh4-rich-muscovite-single-crystals-from-ordovician-armorican-sandstones-brittany-france-structure-and-crystal-chemistry/)

The crystal chemistry of 2M1 micas from Bunyaruguru kamafugite (southwest Uganda) was studied by electron probe microanalysis, single-crystal X-ray diffraction, Mössbauer and Fourier transform infrared spectroscopy. Chemical analyses showed that the studied crystals are Ti-rich, F-poor phlogopites with an annitic component, Fetot/(Fetot + Mg), rang...

The preliminary results of an investigation aimed at the crystal chemical characterization of phlogopite from the Kvaløya lamproite (North Norway) are reported. The investigation was carried out by combining electron probe microanalysis and single crystal X-ray diffraction. The Kvaløya dyke represent the first occurrence of lamproite in Scandinavia...

The aim of this work is to investigate the efficiency of the phyllomanganate birnessite in degrading catechol after mechanochemical treatments. A synthesized birnessite and the organic molecule were grounded together in a high energy mill and the xenobiotic-mineral surface reactions induced by the grinding treatment have been investigated by means...