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On The Role of preparative parameters in Growing Nanocrystalline pbS Thin Films by liquid phase Chemical Bath Deposition

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稀有金属材料与工程 2012年第S1期41卷 28-32页

作者： Chattarki A N deshmukh l p Thin Film&Solar Studies Research laboratory Department of Physics&ElectronicsSolapur UniversitySolapur-413255M.SIndia

A liquid phase chemical bath deposition(lpCBD)method for deposition of pbS thin films is *** growth kinetics and reaction mechanism have been *** the deposition,triethanolamine complex of lead acetate was allowed to react with aqueous thiourea *** micro-slides were used as the *** deposition of pbS films was carried out under different growth parameters such as temperature,time,and reaction *** growth rate,under different conditions,was measured in terms of a terminal layer thickness and the possible reaction kinetics and mechanism is *** optimum values of the parameters to produce good quality films are 60 min,80℃and 10.5±*** EDS analysis showed that the film stoichiometry is dependent on the reaction pH and the films tend to be almost stoichiometric in high alkaline environment(>10.5).The pbS deposits appeared smooth,tightly adherent,uniform and reflecting with blackish-grey *** XRD studies showed crystalline cubic type of structure with preferred orientation along(200)*** calculated d-values,intensities of reflections and lattice parameter have excellent match with that of the JCpD *** crystallite size is found to be few tens of *** surface morphology revealed by SEM showed that the crystallites are randomly oriented and are of different shapes and *** of the crystallites appeared smaller and spherical in shape whereas,growth of some elongated irregular crystallites;bit larger in size and differing in shapes,have also been favoured.

关键词： lpCBD preparative parameters XRD SEM nanocrystals surface morphology

On the Optimization of performance of Hg_xCd_(1-x)S Based Electrochemical photosensing Cell

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稀有金属材料与工程 2012年第S1期41卷 43-46页

作者： lendave S Al p pingale p Cl p deshmukh l p Thin Film and Solar Studies Research laboratory Department of Physics(Appli.Elect.)Solapur UniversitySolapur-413255M.S.India

Chemical growth process that favours deposition of semiconductor materials from a liquid phase was used to obtain CdS and HgxCd1-xS(0≤x≤0.25)photosensitive thin film electrodes on the stainless steel *** deposition of these series of thin films was carried out under the optimized conditions of temperature(60℃),time(90 min)and pH(10.8±0.2).These films were then employed as photosensitive electrode in an electrochemical photosensing cell consisting of sulphide/polysulphide redox electrolyte and a graphite counter *** cells were illuminated by an input illumination intensity of 13 mW/cm 2 and the cell characteristic parameters namely photocurrent(Iph),photo voltage(Vph),the quantum conversion efficiency(η%)and fill factor(ff %)have been *** Vph and Iph have been found to be boosted as the electrode composition is *** conversion efficiency and fill factor enhanced from 0.52%to 1.30%and 31.8%to 37.8%,respectively for the change of electrode composition from 0 to *** of junction ideality factor(nd)showed recombination mechanism at the electrode-electrolyte *** height measurements gave pool-Frenkel type conduction *** flat band potentials(Vfb)were determined for all the cells and found to be enhanced with x up to 0.08 and then decreased for further increase in *** lighted junction quality factor(nl)is increased from 1.49 to 2.94 as the photoelectrode composition(x)was varied from 0 to *** barrier heights(B)at the electrode/electrolyte interfaces were also *** is found that B is higher for a cell of electrode composition equal to *** spectral studies on these cells showed the cut off wavelength(λc)shifted from 530 nm to 800 *** transient response studies showed presence of surface states at the interface that causes Fermi-level ***,performance of the electrochemical photosensing cell is found to be improved after Hg-corboration in CdS and is optimum at x= 0.0

关键词： electrochemical cell photosensing fill factor interface states photovoltage photocurrent

Bimetallic Single‑Atom Catalysts for Water Splitting

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Nano-Micro letters 2025年第1期17卷 1-45页

作者： Megha A.deshmukh Aristides Bakandritsos Radek Zbořil Nanotechnology Centre Centre for Energy and Environmental TechnologiesVŠB–Technical University of Ostrava17.listopadu 2172/1570800 Ostrava‑PorubaCzech Republic Regional Centre of Advanced Technologies and Materials Czech Advanced Technology and Research Institute(CATRIN)Palacky University OlomoucŠlechtitelů241/2778371 Olomouc–HoliceCzech Republic

Green hydrogen from water splitting has emerged as a critical energy vector with the potential to spearhead the global transition to a fossil fuel-independent *** field of catalysis has been revolutionized by single-atom catalysts(SACs),which exhibit unique and intricate interactions between atomically dispersed metal atoms and their ***,bimetallic SACs(bimSACs)have garnered significant attention for leveraging the synergistic functions of two metal ions coordinated on appropriately designed *** offer an avenue for rich metal–metal and metal–support cooperativity,potentially addressing current limitations of SACs in effectively furnishing transformations which involve synchronous proton–electron exchanges,substrate activation with reversible redox cycles,simultaneous multi-electron transfer,regulation of spin states,tuning of electronic properties,and cyclic transition states with low activation *** review aims to encapsulate the growing advancements in bimSACs,with an emphasis on their pivotal role in hydrogen generation via water *** subsequently delve into advanced experimental methodologies for the elaborate characterization of SACs,elucidate their electronic properties,and discuss their local coordination ***,we present comprehensive discussion on the deployment of bimSACs in both hydrogen evolution reaction and oxygen evolution reaction,the two half-reactions of the water electrolysis process.

关键词： Single-atom catalysts Single-atom dimers Hydrogen evolution Oxygen evolution Water splitting

Recent advances in chemical modifications of graphene

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Nano Research 2015年第4期8卷 1039-1074页

作者： Sunil p. lonkar Yogesh S. deshmukh Ahmed A. Abdala Department of Chemical Engineering The Petroleum Institute PO Box 2533 Abu Dhabi UAE Faculty of Humanities and Sciences Maastricht Science Programme Maastricht University Minderbroedersberg 4-6 6211LK Maastricht the Netherlands

Graphene has attracted the interest of chemists, physicists, and materials scientists due to its extraordinary structural, mechanical, and electronic properties. While pristine graphene is desirable for applications that require a high electrical conductivity, many other applications require modified or functionalized forms of graphene, such as graphene oxide, reduced graphene, or other functionalized forms. Structurally modifying graphene through chemical functionalization reveals the numerous possibilities for tuning its structure; several chemical and physical functionalization methods have been explored to improve the stabilization and modification of graphene. In this review, we report recent progress towards the chemical modification of graphene, including both covalent and noncovalent methods, for use in various applications.

关键词： graphene graphene oxide functionalization covalent non-covalent applications

Machine learning techniques for prediction of capacitance and remaining useful life of supercapacitors: A comprehensive review

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Journal of Energy Chemistry 2023年第2期77卷 438-451,I0011页

作者： Vaishali Sawant Rashmi deshmukh Chetan Awati Department of Technology Shivaji UniversityKolhapurMaharashtraIndia

Supercapacitors are appealing energy storage devices for their promising features like high power density,outstanding cycling stability,and a quick charge–discharge *** exceptional life cycle and ultimate power capability of supercapacitors are needed in the transportation and renewable energy generation ***,predicting the capacitance and lifecycle of supercapacitors is significant for selecting the suitable material and planning replacement intervals for *** addition,system failures can be better addressed by accurately forecasting the lifecycle of ***,the use of machine learning for performance prediction of energy storage materials has drawn increasing attention from researchers globally because of its superiority in prediction accuracy,time efficiency,and *** article presents a detailed review of the progress and advancement of Ml techniques for the prediction of capacitance and remaining useful life(RUl)of *** review starts with an introduction to supercapacitor materials and Ml applications in energy storage devices,followed by workflow for Ml model building for supercapacitor ***,the summary of machine learning applications for the prediction of capacitance and RUl of different supercapacitor materials including EDlCs(carbon based materials),pesudocapacitive(oxides and composites)and hybrid materials is ***,the general perspective for future directions is also presented.

关键词： Supercapacitors Energy storage materials Artificial neural network Machine learning Capacitance prediction Remaining useful life

Evaluation of influence of cold atmospheric pressure argon plasma operating parameters on degradation of aqueous solution of Reactive Blue 198(RB-198)

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plasma Science and Technology 2020年第5期22卷 114-125页

作者： K NAVANEETHA pANDIYARAJ D VASU p V A pADMANABHAN M pICHUMANI R R deshmukh V KANDAVElU Research Division of plasma processing(RDpp) Department of PhysicsSri Shakthi Institute of Engineering and TechnologyChinniyam Palayam(post)Coimbatore-641062India Department of Nanoscience and Technology Sri Ramakrishna Engineering CollegeCoimbatore-641022India Department of physics Institute of Chemical TechnologyMatungaMumbai 400019India Department of Chemistry Sri Shakthi Institute of Engineering and TechnologyL&T bypassChinniyam Palayam(post)Coimbatore-641062India

The intention of this work is to remove Reactive Blue 198(RB-198)dye components from simulated water solution using cold atmospheric pressure argon plasma *** solutions of RB-198 dye were treated as a function of various operating parameters such as applied potential,reaction time and distance between the plasma jet and surface of the *** efficiency of the degradation of RB-198 molecules was explored by means of UV-Vis *** reactive species involved during the treatment process were examined by optical emission spectra(OES).The present hydroxyl radicals(OH·radical)and hydrogen peroxide(H2O2)in the plasma-treated aqueous dye solutions were investigated using various spectroscopic *** other parameters such as total organic carbon(TOC),conductivity and p H were also *** toxicity of plasma-treated RB-198 solution was finally studied by diffusion bacterial analysis and by tracking seed germination *** results show that a higher degradation percentage of99.27%was acquired for the RB-198 treated at higher reaction time and applied potential,and shorter distance between the plasma jet and water *** may be due to the formation of various reactive oxygen(OH·radical,atomic oxygen(O)and H2O2)and nitrogen species(nitric oxide(NO)radicals and N2 second positive system(N2 SpS))during the processes as confirmed by OES analysis and other spectroscopy ***(17.7%-81.8%)and pH(7.5-3.4)values of the plasma-treated RB-198 decreased significantly with respect to various operation parameters,which indicates the decomposition of RB-198 molecules in the aqueous ***,the conductivity of plasma-treated RB-198 aqueous solutions was found to have increased linearly during the plasma treatment due to the formation of various ionic species in aqueous *** toxicity analysis clearly exhibits the non-toxic behavior of plasma-treated RB-198 aqueous solution towards the bacterial growth and germination of see

关键词： RB-198 degradation non-toxicity cold atmospheric pressure plasma jet

Geochemical constraints on the tectonic setting of the Sonakhan Greenstone Belt, Bastar Craton, Central India

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Acta Geochimica 2018年第3期37卷 489-499页

作者： S.D.deshmukh K.R.Hari p.Diwan M.p.Manu prasanth Department of Geology Govt. V. Y. T. P G Autonomous College School of Studies in Geology and W.R.M. Pt. Ravishankar Shukla University Department of Applied Geology National Institute of TechnologyRaipur India

The Neo-Archean Sonakhan Greenstone Belt(SGB) located in the north-eastern fringes of Bastar craton,Central India, is dominated by Basalts, Andesites, Dacites and Rhyolites association. partial melting modeling on the SGB metabasalts indicates that these rocks were derived by20% melting of spinel peridotite. Fractional crystallisation modeling with REE reveal that the most evolved samples represent the product of fractional crystallization of least evolved magma with 35% plagioclase, 35% clinopyroxene,20% olivine, 5% magnetite and 5% ilmenite as fractionating minerals with 40% remaining magma. Depletion of HFSE with reference to the lIlE and lREE/HFSE ratios and Nb, Zr anomalies in the multi-element diagram of the mafic rocks of SGB indicate Island arc magmatic *** enriched Th/Yb values further substantiate that the mantle arrays were modified by subduction-related fluids or melts. The general conclusions drawn indicate that the metabasalts from the SGB were formed as a result of subduction of an intraoceanic lithosphere in a fore-arc suprasubduction zone environment.

关键词： Supra-subduction Neo-Archean SonakhanGreenstone terrain Bastar craton

Beginning from the end:the presynaptic terminal as a pathomechanism hub in frontotemporal dementia and amyotrophic lateral sclerosis

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Neural Regeneration Research 2025年第11期20卷 3217-3218页

作者： laura Huggon Emma l.Clayton UK Dementia Research Institute at King’s College london LondonUK Department of Basic and Clinical Neuroscience Institute of Psychiatry Psychology&NeuroscienceKing’s College LondonLondonUK

Frontotemporal dementia and amyotrophic lateral sclerosis:Frontotemporal dementia(F T D)and amyo t rophic lateral sclerosis(AlS)are neurodegenerative diseases with significant overlapping *** these neurodegenerative diseases affect different neuronal populations(with FTD affecting neurons of the frontal and temporal lobes,and AlS affecting upper and lower motor neurons),these two diseases are complexly *** and AlS exist on a disease spectrum,with shared genetic causes,clinical presentations,and pathologies.

关键词： diseases amyotrophic sclerosis

Effect of alkaline metal ions on the photoluminescence properties of Eu^(3+)-doped Ca_3Al_2O_6 phosphors

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Journal of Rare Earths 2016年第12期34卷 1193-1198页

作者： Kyeongsoon park Joon Woo pi deshmukh Abdul Hakeem Faculty of Nanotechnology and Advanced Materials Engineering Sejong University

Ca3–xAl2O6：x Eu^3＋（0.02≤x≤0.10） and Ca（2.92）Al2O6：0.04Eu^3＋,0.04M^＋（M^＋=li^＋, Na^＋, and K^＋） phosphors were prepared by sol-gel method and their photoluminescence properties were investigated. The crystal structure of the annealed Ca3–xAl2O6：x Eu^3＋ and Ca（2.92）Al2O6：0.04Eu^3＋,0.04M^＋ phosphors was analyzed with X-ray diffraction（XRD）. The size and morphological characteristics of the annealed phosphors were investigated with a field emission scanning electron microscope（FE-SEM）. The photoluminescence properties were evaluated with a spectrofluorometer. The phosphors were effectively excited by the light of 396 nm and showed intense red emission at 616 nm, which originated from the 5D0→7F2 transition of Eu^3＋. Among the prepared phosphors, the Ca（2.96）Al2O6：0.04Eu^3＋ phosphor showed the strongest emission intensity and the highest color purity. The addition of alkaline metal ions（li^＋, Na^＋, and K^＋） to Ca（2.96）Al2O6：0.04Eu^3＋ phosphor degraded the emission intensity and color purity.

关键词： phosphor photoluminescence emission sol-gel method Eu3+ rare earths