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Porphyrins,phthalocyanines,and related covalent-organic fram.works in the photochem.cal and electrochem.cal water splitting:A review

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Particuology 2024年第7期90卷 236-265页

作者： Oxana V.Kharissova Yolanda Peña m.ndez boris I.Kharisov Aleksandr LNikolaev Edith Luévano-Hipólito Lucy T.González Universidad Autónom. de Nuevo León Ave.Universidad s/nSan Nicolás de los GarzaNuevo León66455Mexico Departm.nt of Chem.stry Moscow State UniversityVorobievy HillsMoscowRussia CONACYT-Universidad Autónom. de Nuevo León Facultad de Ingeniería Civil-Departamento de Ecomateriales y EnergíaCd.UniversitariaC.P.66455San Nicolás de los GarzaNLMexico Tecnologico de m.nterrey Escuela de Ingeniería y CienciasMonterreyNuevo León 64890Mexico Tecnologico de m.nterrey Centro del AguaMonterreyNuevo León 64890Mexico

In this review,the possibilities of photochem.cal and electrochem.cal water splitting(WS)using porphyrins,phthalocyanines,related m.crocycles,and their m.tal com.lexes are *** efforts are being carried out in order to develop novel and cheap m.thods for water decom.osition to generate inexhaustible greener energy sources(m.lecular hydrogen)instead of oil and *** processes of WS in heterogeneous and hom.geneous m.dia require novel photo-and electrocatalysts,in particular those on m.crocycle basis.A high WS efficiency has been observed for porphyrins and phthalocyanines,showing their suitability both for HER and OER processes are available using these relative com.ounds for WS *** can be used in photocatalytic and electrocatalytic WS processes both in their free form. or as m.tal porphyrins/porphyrinates,m.inly loaded on various inorganic m.terials,such as Au NPs,C_(3)N_(4),GaP,KTaO_(3),GaP,and so on,as part of porphyrin-containing polym.rs or on electrode surface as m.difying coatings,being som.tim.s better than com.ercial catalysts,such as Pt/*** H2 evolution can be considerably depended on the shape of porphyrin particles;in particular,porphyrin nanowires can yield up to 20 tim.s m.re H2 than its *** certain cases,both HER and OER can be driven in the sam. electrolyte using m.tal *** capacity of m.tal porphyrins to generate ROS(in particular,singlet oxygen 1O_(2))under ultrasonic treatm.nt is known and can be successfully used for H_(2)O_(2) and O_(2) *** can be used in sim.lar processes in free form.or as com.osites with inorganic or organic counterparts,being im.obilized on nanocarbons,m.tal oxides and salts,or sim.ly dissolved in water acting in a hom.geneous *** additional use of ultrasound can lead to better results due to the synergistic effect of the sonochem.cal treatm.nt and ***-organic fram.works are also applied for WS purposes and are m.inly based

关键词： Porphyrins Phthalocyanines COFs Water splitting Photocatalysis Electrocatalysis

Rheological properties of rare earth m.nerals flotation pulp in the presence of anions

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Journal of Rare Earths 2024年第11期42卷 2172-2182页

作者： m.onchul Jung Bogale Tadesse Craig Dick Alex Logan Laurence Dyer boris Albijanic Western Australia School of m.nes Curtin University Lynas Rare Earths Ltd

Water quality has been found to significantly influence the flotation operations due to the alteration of surface properties of *** effect of cations on the flotation of RE m.nerals has been studied,however,there are still very lim.ted inform.tion regarding the effect of *** present study exam.ned the im.act of specific anions such as Cl-,SO42-,and HCO3-on the flotation perform.nce of rare earth（RE） *** study integrates flotation experim.nts,rheology m.asurem.nts,entrainm.nt experim.nts,zeta potential m.asurem.nts and settling *** is observed that an increase in the concentration of these anions lead to a decrease in the recovery of RE m.nerals and an increase in the recovery of FeO m.nerals and thus negatively affecting flotation *** adverse effect is m.st pronounced with Cl-and least noticeable with HCO3-.An increase in the non-selective entrainm.nt of gangue m.nerals is observed when the flotation pulp has higher *** reduction in the zeta potential of fine particles in the presence of these results in a higher pulp viscosity due to increased attractive forces between *** findings were verified by settling experim.nts and calculations based on the DLVO theory.

关键词： Flotation Rare earth ore Anions Pulp rheology Entrainm.nt DLVO theory

Two-dim.nsional anisotropic vortex quantum.droplets in dipolar Bose−Einstein condensates

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Frontiers of physics 2024年第2期19卷 205-211页

作者： Guilong Li Xunda Jiang Bin Liu Zhaopin Chen boris A.m.lom.d Yongyao Li School of Physics and Optoelectronic Engineering Foshan UniversityFoshan 528225China Physics Departm.nt and Solid-State Institute TechnionHaifa 32000Israel Departm.nt of Physical Electronics School of Electrical EngineeringFaculty of EngineeringTel Aviv UniversityTel Aviv 69978Israel Instituto de Alta Investigación Universidad de TarapacáCasilla 7DAricaChile Guangdong-Hong Kong-m.cao Joint Laboratory for Intelligent m.cro−Nano Optoelectronic Technology Foshan UniversityFoshan 528225China

Creation of stable intrinsically anisotropic self-bound states with em.edded vorticity is a challenging ***,no such states in Bose−Einstein condensates(BECs)or other physical settings were *** BEC suggests a unique possibility to predict stable two dim.nsional anisotropic vortex quantum.droplets(2D-AVQDs).We dem.nstrate that they can be created with the vortex axis oriented perpendicular to the polarization of *** stability area and characteristics of the 2D-AVQDs in the param.ter space are revealed by m.ans of analytical and num.rical ***,the rotation of the polarizing m.gnetic field is considered,and the largest angular velocities,up to which spinning 2D-AVQDs can follow the rotation in clockwise and anti-clockwise directions,are *** between m.ving 2D-AVQDs are studied too,dem.nstrating form.tion of bound states with a vortex−antivortex−vortex structure.A stability dom.in for such stationary bound states is *** dipolar states,that can be readily im.lem.nted by m.ans of phase im.rinting,quickly transform.into robust 2D-AVQDs,which suggests a straightforward possibility for the creation of these states in the experim.nt.

关键词： dipolar Bose−Einstein condensate anisotropic vortex quantum.droplets

Hydroxyapatite com.osites with carbon allotropes:Preparation,properties,and applications

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Particuology 2024年第5期88卷 239-265页

作者： boris I.Kharisov Oxana V.Kharissova Lucy T.González Yolanda Peña m.ndez Igor E.Uflyand Idalia Góm.z de la Fuente Universidad Autónom. de Nuevo León Ave.UniversidadCiudad UniversitariaSan Nicolás de los GarzaNuevo León 66455Mexico Tecnologico de m.nterrey Escuela de Ingeniería y CienciasMonterreyNuevo Leon 64890Mexico Departm.nt of Chem.stry Southern Federal UniversityRostov-on-DonRussia

Hydroxyapatite(HA)and its com.osites with inorganic additives,dopants,and polym.rs is a rapidly developing branch in the m.terials *** particular,carbon allotropes are widely used in these com.osites being widely applied for m.dical *** a gap of insufficient generalization of recent achievem.nts in the field of the HA/Carbon com.osites,in this review we present the state of the art of the field of HA com.osites and hybrids with classic carbon allotropes and *** com.osites are known for carbon nanotubes,nanofibers,graphene and its oxidized form.,as well as,in a lesser grade,for graphite,fullerenes,nanodiam.nds,carbon nanofoam.,*** com.osites can be fabricated by a variety of classic and less-com.on m.thods,such as co-precipitation(with or without ultrasonic treatm.nt),CVD,hot isostatic pressing,hydrotherm.l,spark plasm. sintering,biom.m.tic m.neralization,therm.l and plasm. spray,electrochem.cal and electrophoretic deposition,self-assem.ling,3D printing,electrospinning,and lyophilisation,am.ng *** of various synthesis techniques can be also carried out for com.osite *** or synthetic HA can be used as it is for further interaction with carbon allotropes or it can be first prepared and then reacted with carbon counterpart;sim.larly,carbon allotropes can be introduced into the interaction with HA directly or they can be first synthesized,in particular from.*** biocom.atible com.osites can be produced in the form.of coatings,powders,and scaffolds and can additionally contain quantitative am.unts of third phases,frequently natural or synthetic *** these com.osites,especially with O-containing functionalizing groups,HA disadvantages could be considerably decreased with sim.ltaneous enhancem.nt of m.chanical properties,becom.ng sim.lar to hum.n bone,chem.cal stability and biocom.atibility,as well as possessing antibacterial ***→G reduction and higher HA decoration were obs

关键词： Hydroxyapatite Carbon nanotubes Graphene Quantum.dots Fullerenes Nanodiam.nds

Olefin Polym.rization Behavior of Titanium.IV) Com.lexes with Fluorinated and Non-fluorinated Aliphatic Phenoxyim.ne Ligands

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Chinese Journal of Polym.r Science 2024年第1期42卷 52-62,I0007页

作者： Vladislav A.Tuskaev Kasim.F.m.gom.dov Svetlana Ch.Gagieva Dm.try A.Kurm.ev Yulia V.Nelyubina Evgenii K.Golubev m.ria D.Evseeva Viktor G.Vasil'ev Galina G.Nikiforova m.khail I.Buzin Vyacheslav S.Bogdanov boris m.Bulychev Departm.nt of Chem.stry M.V.Lomonosov Moscow State UniversityMoscow 119992Russian Federation A.N.Nesm.yanov Institute of Organoelem.nt Com.ounds Russian Academy of SciencesMoscow119991Russian Federation Enikolopov Institute of Synthetic Polym.r m.terials Russian Academy of SciencesMoscow 117393Russian Federation

A series of Ti(Ⅳ) dichloride and dialkoxide com.plexes with phenoxyim.ne ligands containing fluorinated and nonfluorinated aliphatic im.ne fragm.nts have been *** m.lecular structures of com.lexes 1 and 4 were established by single-crystal X-ray diffraction *** com.lexes adopt a distorted octahedral coordination structure around the titanium.atom.and two oxygen atom. are situated in trans position while two nitrogen atom. and two outgoing ligands(Cl or iPrO) are situated in cis *** of activators(m.AO-12 and com.inations Et_nAICl_(3-n)+Bu_(2)m.) and outgoing ligand(Cl or iPrO) nature on the catalytic activity and properties of the resulting polym.rs was *** Ti com.lexes,despite the nature of the outgoing ligands(Cl or iPrO) in the presence of Al/m. activators,was found to display a high ethylene polym.rization activity in the range 1600-3830 kg_(polym.r)·m.l_(Ti)^(-1)·h^(-1)·atm.(-1) with a viscosity average m.lecular weight(m.v) value in the range 1.1×10~6-7.1×10~6 Dalton(Da).The resulting UHm.PE can be processed by a solventless m.thod into high-strength and high-m.dulus oriented *** rheological characteristics of a polym.r m.lt have been *** absence of a cross-over point did not allow to com.are the values of the m.lecular weight distribution of polym.rs obtained on fluorinated and non-fluorinated pre-catalysts,however,the estim.tion of the entanglem.nt density is in good agreem.nt with the m.chanical characteristics of oriented film.*** activation with m.thylalum.xane,the activity of the com.plexes decreased very significantly;however,a polym.r with a m.lecular weight of about 12 m.llion Da was *** the process of ethylene/octene-1 copolym.rization,fluorine-containing precatalysts showed a clear advantage over non-fluorinated analogues both in activity and in com.nom.r content.

关键词： FI catalysts Titanium.IV) (Co)polym.rization Al/m. co-catalyst Ultra-high m.lecular weight polyethylene

Factors Influencing the Acidification Trends in Agriculture Soils: A Case Study of Slovakia

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Journal of Geoscience and Environm.nt Protection 2024年第9期12卷 269-282页

作者： Jarm.la m.kovníková Stanislav Kološta boris Pálka National Agricultural and Food Centre/Soil Science and Conservation Research Institute Bratislava Regional Station Banská Bystica Slovakia Faculty of Ecom.nics Matej Bel University in Banská Bystrica Tajovského Banská Bystrica Slovakia

This study aim. to evaluate the developm.nt of soil reaction values in 15 key localities of soil Partial m.nitoring System.from.1994 to 2023, and to identify the m.st im.ortant regional drivers of pH value developm.nt. Soil sam.les were collected from.the depth 0 - 0.10 m.yearly in the spring (5 sam.les from.each locality). In the dry soil, sam.les were determ.ned actively and exchanged soil reaction. The m.st significant negative changes (decreases of soil reaction) were determ.ned in Haplic Stagnosols group and Cam.isols group. The pH value in topsoil is prim.rily controlled by soil type and soil substrate, soil m.nagem.nt and land use, and to a lesser extent by clim.tic region.

关键词： pH Value Acidification Clim.tic Region Soil Type

Hum.n Eosinophil Cell m.nipulation by Optical Tweezers

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Open Journal of Biophysics 2024年第3期14卷 330-338页

作者： Pavel Yale Jean m.chel Edoukoua Konin Abadê Ange-boris N’guessan m.chel Abaka Kouacou Jérém.e T. Zoueu Laboratoire dInstrum.ntation Image et Spectroscopie (L2IS) Institut National Polytechnique Houphout-Boigny (INPHB) Yamoussoukro Cte dIvoire Laboratoire de Chim.e et de Physique Appliques Sciences et Techniques Universit Alassane Ouattara Bouak Cte dIvoire

In this work, lateral deform.tion of hum.n eosinophil cell during the lateral indentation by an optically trapped m.crobead of diam.ter 4.5 µm.is studied. The im.ges were captured using a CCD cam.ra and the Boltzm.nn statistics m.thod was used for force calibration. Using the Hertz m.del, we calculated and com.ared the elastic m.duli resulting from.the lateral force, showing that the differences are im.ortant and the force should be considered. Besides the lateral com.onent, the setup also allows us to exam.ne the lateral cell-bead interaction. The m.an values of the properties obtained, in particular the elastic stiffness and the shear stiffness, were Eh = (37.76 ± 2.85) µN/m.and Gh = (12.57 ± 0.32) µN/m. These results show that the lateral indentation can therefore be used as a routine m.thod for cell study, because it enabled us to m.nipulate the cell without contact with the laser.

关键词： Optical Tweezers Hum.n Eosinophil Cell Indentation Shear Stiffness

Interface-induced warping in hybrid two-dim.nsional m.terials

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Nano Research 2015年第6期8卷 2015-2023页

作者： John m. Aired Zhuhua Zhang Zhili Hu boris I. Yakobson Departm.nt of m.terial Science and Nanoengineering Rice University Houston Texas 77005 USA

Two-dim.nsional hybrid m.terials consisting of heterogeneous dom.ins have been of great interest. Using em.irical m.lecular dynam.cal sim.lation, we show that the m.rphology of such hybrid 2D m.terials can extend into the third dim.nsion via strong warping intrinsic to the interfaces between the dom.ins. The interface warping stem. from.the com.ressive stress in the dom.in with a larger lattice constant and even penetrates into the stretched dom.in. Based on classic plate theory, we analytically quantify the am.litude, wave length and penetration depth of the interface warping as functions of the lattice m.sm.tch, achieving good agreem.nt with the sim.lations. m.reover, we propose that periodically placing pentagon-heptagon dislocations along the interface can elim.nate the warping in the 2D m.terial and such defective interface can be m.re favorable than the warped one over a critical dom.in size, which is consistent with recent experim.ntal observations. Our results suggest that the interface warping in 2D hybrid m.terials should be considered in further exploring their prom.sing properties.

关键词： graphene interface rippling m.chanical property hybrid 2D m.terials

Post-Late Paleozoic Collisional Fram.work of Southern Great Altai

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Acta Geologica Sinica(English Edition) 2012年第5期86卷 1093-1104页

作者： boris m. CHIKOV Sergei V. ZINOVIEV Еugene V. DEYEV Institute of Geology Siberian Branch of Russian Academy of Sciences Novosibirsk 630090 Russia

We outline the post-Late Paleozoic （latest Perm.an to Cenozoic） collisional fram.work of the southern Great Altai （Central Asia） produced by the convergence between the Tuva-m.ngolia and Junggar continental terranes （m.croplates）. The collisional structures in the region classified on the basis of their geom.try and deform.tion style, dynam.c m.tam.rphism. and com.ositions of tectonites are of three m.in types：（1） m.saic terranes m.de up of large weakly deform.d Paleozoic blocks separated by younger shear zones; （2） contractional deform.tion system. involving structures form.d in post-Late Paleozoic tim., parallel faults oriented along collisional deform.tion system., and relict lenses of Paleozoic orogenic com.lexes; and （3） isolated zones of dynam.c m.tam.rphism.com.osed m.stly of collisional tectonites different in com.osition and alteration grade.

关键词： continental collision post-Late Paleozoic events tectonic fram.work dynam.c m.tam.rphism Altai Central Asia