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Titanate Nanorods Modified with Nanocrystalline ZnS Particles and Their Photocatalytic Activity on Pollutant Removal

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Journal of Materials Science & Technology 2016年第11期32卷 1122-1128页

作者： g.Naudin T.Entradas B.Barrocas o.c.Monteiro Faculte de chimie Universite Pierre et Marie Curie (UPMC) Batiment F 3e etage 4 placeJussieu 75005 Paris France centro de Quimica e Bioquimica Faculdade de Ciencias Universidade de Lisboa 1749-016 Lisboa Portugal

Aiming to produce materials with enhanced photocatalytic properties, the synthesis of new crystalline nanocomposites by combining titanate nanorods（TNR） with ZnS nanocrystallites is described in this *** TNR modification was accomplished by an in situ nucleation and growth process of ZnS *** diethyldithiocarbamate was used as the metal chalcogenide precursor. The prepared materials were structural, morphological and optical characterized by X-ray diffraction, transmission electron microscopy and high resolution transmission electron microscopy, energy dispersive spectroscopy and powder diffuse reflectance spectra. crystalline Zn S nanoparticles were obtained as a homogeneous and continuous layer, covering completely the TNR surface. The application of these new nanocomposite materials on photocatalytic degradation of pollutants was investigated. First, the evaluation of hydroxyl radical formation, using the terephthalic acid as probe, was studied. Afterwards, the adsorption and photodegradation of safranine-T, used here as a model pollutant molecule, was investigated. The obtained data indicate that the prepared nanocomposites have potential to be used as photocatalysts for organic pollutant *** best removal results（97% removal） were obtained using the 0.01 Zn S/HTNR sample as catalyst（0.2 g/L; 10 ppm safranin-T solution） with a combination of a low dye adsorption（20%） and a high dye photocatalytic degradation（77%）.

关键词： Nanocomposite materials Surface modification Photocatalysis Adsorption ability optical properties

Neutrino masses,cosmological inflation and dark matter in a variant U(1)B-L model with type II seesaw mechanism

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chinese Physics c 2021年第2期45卷 621-630页

作者： J.g.Rodrigues A.c.o.Santos J.g.Ferreira Jr c.A.de S.Pires Departamento de Física Universidade Federal da ParaíbaCaixa Postal 500858051-970João PessoaPBBrasil Departamento de Física Universidade Federal do Rio Grande do Norte59078-970NatalRNBrasil

In this study,we implemented the type Ⅱ seesaw mechanism into the framework of the U(l)B-L gauge *** achieve this,we added a scalar triplet,A,to the canonical particle content of the U(l)B-Lgauge *** imposing that the U(l)B-L gauge symmetry be spontaneously broken at TeV scale,we show that the type Ⅱ seesaw mechanism is realized at an intermediate energy scale,more precisely,at approximately 109 *** prevent heavy right-handed neutrinos from disturbing the mechanism,we evoke a Z2 discrete ***,as a result,we have standard neutrinos with mass around eV scale and right-handed neutrinos with mass in TeV scale,with the lightest one fulfilling the condition of dark *** developed all of these in this *** addition,we show that the neutral component of Δ may perform unproblematic non-minimal inflation with loss of unitarity.

关键词： models beyond the standard model particle-theory and field-theory models of the early universe neutrino mass and mixing

on the calibration of the parameters governing the PWRI distributed hydrological model for flood prediction

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Journal of Safety Science and Resilience 2020年第2期1卷 80-90页

作者： Amaly Fong Lee adan Vega Saenz Yoshiaki Kawata Zoartech consulting INc Panama CityPanama Panama Maritime Authority Panama CityPanama Kansai University OsakaJapan

The Public Works Research Institute Distributed Hydrological(PWRI-DH)for flood modeling is a combination of the tank model and the kinematic wave *** the PWRI-DH model,fitting the required parameters plays a fundamental *** developers of the PWRI-DH model have introduced the capability of obtaining parameters automatically using the baseline parameters;however,the results are not always the expected results because they depend on several factors and must be calibrated *** last issue has limited the interest of researchers regarding in the usage of the PWRI-DH *** this paper,we present a methodology to obtain the parameters required for the PWRI-DH model that enables to focusing only on the key ***,a parametric study is performed by identifying the influence of each parameter in the *** this study,we found that only four parameters play a fundamental role in the flood modeling using the PWRI-DH *** flood events in the Upper Aikawa River basin are used to calibrate the *** results showed that the proposed methodology is suitable and improve the efficient on the flood simulation of Aikawa River and similar rivers,when using the PWRI-DH model.

关键词： Flood prediction PWRI-DH model Discharge modeling Parameters calibration

A ship navigation information service system for the Arctic Northeast Passage using 3D gIS based on big Earth data

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Big Earth Data 2022年第4期6卷 453-479页

作者： adan Wu Tao che Xin Li Xiaowen Zhu Key Laboratory of Remote Sensing of gansu Province Heihe Remote Sensing Experimental Research StationNorthwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhouChina University of chinese Academy of Sciences BeijingChina cAS center for Excellence in Tibetan Plateau Earth Sciences BeijingChina Institute of Tibetan Plateau Research Chinese Academy of SciencesBeijingChina School of geodesy and geomatics Gansu Forestry PolytechnicTianshuiChina

Research on Arctic passages has mainly focused on navigation policies,sea ice extraction models,and navigation of Arctic sea *** is difficult to quantitatively address the specific problems encountered by ships sailing in the Arctic in real time through traditional manual ***,existing sea ice information service systems focus on data sharing and lack online calculation and analysis capabil-ities,making it difficult for decision-makers to derive valuable informa-tion from massive amounts of *** improve navigation analysis through intelligent information service,we built an advanced Ship Navigation Information Service System(SNISS)using a 3D geographic information system(gIS)based on big Earth *** SNISS includes two main features:(1)heuristic algorithms were developed to identify the optimal navigation route of the Arctic Northeast Passage(NEP)from a macroscale perspective for the past 10 years to the next 100 years,and(2)for key sea straits along the NEP,online local seaice images can be retrieved to provide a fully automatic sea ice data processing workflow,solving the problems of poor flexibility and low availability of real sea ice remote sensing data *** work can potentially enhance the safety of shipping navigation along the NEP.

关键词： Arctic Northeast Passage sea ice shipping information service system 3D gIS

Synthesis and Some Properties of Metal organic chemical Vapour Deposited Molybdenum oxysulphide Thin Films

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Journal of Materials Science & Technology 2010年第6期26卷 552-557页

作者： B.olofinjana g.o.Egharevba M.A.Eleruja c.Jeynes A.V.Adedeji o.o.Akinwunmi B.A.Taleatu c.U.Mordi E.o.B.Ajayi Department of Physics Obafemi Awolowo UniversityIle-IfeNigeria Department of chemistry Obafemi Awolowo UniversityIle-IfeNigeria Department of Electronic and Electrical Engineering University of SurreyGuildfordSurrey GU2 5XHUK Department of chemistry and Physics Elizabeth City State UniversityElizabeth CityNC 27909USA

Molybdenum oxodithiocarbamate was prepared as thin films which were deposited on sodalime glass a single solid source precursor for molybdenum oxysulphide substrates using metal organic chemical vapour deposition （MocVD） technique at a temperature of 420~c. Rutherford backscattering spectroscopy （RBS） was used to determine the elemental composition of the film which showed that the films contained large amounts of oxygen. The large amount of oxygen was attributed to the large abundance of oxygen in the starting material. A direct optical energy gap of 3.31 eV was obtained from the analysis of the absorption spectrum. The scanning electron microscopy （SEM） micrographs of the films showed that the films were continuous and porous. An estimated average size of the grains was below 5 #m. X-ray diffraction （XRD） showed that the deposited films were crystalline in nature.

关键词： Molybdenum oxodithiocarbamate Molybdenum oxysulphide Metal organic chemical vapour deposition (MocVD) Thin film

Ultra‑Transparent and Multifunctional IZVo Mesh Electrodes for Next‑generation Flexible optoelectronics

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Nano-Micro Letters 2025年第1期17卷 293-309页

作者： Kiran A.Nirmal Tukaram D.Dongale Atul c.Khot chenjie Yao Nahyun Kim Tae geun Kim School of Electrical Engineering Korea UniversityAnam‑ro 145Seongbuk‑guSeoulRepublic of Korea computational Electronics and Nanoscience Research Laboratory School of Nanoscience and BiotechnologyShivaji UniversityKolhapur 416004India

Mechanically durable transparent electrodes are essential for achieving long-term stability in flexible optoelectronic ***,they are crucial for applications in the fields of energy,display,healthcare,and soft *** meshes represent a promising alternative to traditional,brittle,metal oxide conductors due to their high electrical conductivity,optical transparency,and enhanced mechanical *** this paper,we present a simple method for fabricating an ultra-transparent conducting metal oxide mesh electrode using selfcracking-assisted *** this method,we produced an electrode with ultra-transparency(97.39%),high conductance(Rs=21.24Ωsq^(−1)),elevated work function(5.16 eV),and good mechanical *** also evaluated the effectiveness of the fabricated electrodes by integrating them into organic photovoltaics,organic light-emitting diodes,and flexible transparent memristor devices for neuromorphic computing,resulting in exceptional device *** addition,the unique porous structure of the vanadium-doped indium zinc oxide mesh electrodes provided excellent flexibility,rendering them a promising option for application in flexible optoelectronics.

关键词： Self-cracking template Vanadium-doped indium zinc oxide mesh organic solar cells organic light-emitting diodes Flexible transparent memory

Status and accuracy of the Monte carlo generators for luminosity measurements

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chinese Physics c 2010年第6期34卷 883-888页

作者： g.Montagna g.Balossini c.Bignamini c.M.carloni calame o.Nicrosini F.Piccinini Dipartimento di Fisica Nucleare e Teorica Università di Pavia Istituto Nazionale di Fisica Nucleare School of Physics & Astronomy University of Southampton

The status and accuracy of the precision Monte carlo generators used for luminosity measurements at flavour factories is reviewed. It is shown that, thanks to a considerable, long-term effort in tuned comparisons between the predictions of independent programs, as well as in the validation of the generators against the presently available calculations of the next-to-next-to-leading order QED corrections to Bhabha scattering, the theoretical accuracy reached by the most precise tools is of about one per mille. This error estimate is valid for realistic experimental cuts, appears to be quite robust and is already sufficient for very accurate luminosity measurements. However, recent progress and possible advances to further improve it are also discussed.

关键词： Luminosity QED Bhabha scattering radiative corrections Monte carlo NNLo calculations

Machine learning empowers efficient design of ternary organic solar cells with PM6 donor

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Journal of Energy chemistry 2025年第1期100卷 337-347页

作者： Kiran A.Nirmal Tukaram D.Dongale Santosh S.Sutar Atul c.Khot Tae geun Kim School of Electrical Engineering Korea University computational Electronics and Nanoscience Research Laboratory School of Nanoscience and Biotechnology Shivaji University Yashwantrao chavan School of Rural Development Shivaji University

organic solar cells(oScs) hold great potential as a photovoltaic technology for practical ***, the traditional experimental trial-and-error method for designing and engineering oScs can be complex, expensive, and time-consuming. Machine learning(ML) techniques enable the proficient extraction of information from datasets, allowing the development of realistic models that are capable of predicting the efficacy of materials with commendable accuracy. The PM6 donor has great potential for high-performance oScs. However, it is crucial for the rational design of a ternary blend to accurately forecast the power conversion efficiency(PcE) of ternary oScs(ToScs) based on a PM6 ***, we collected the device parameters of PM6-based ToScs and evaluated the feature importance of their molecule descriptors to develop predictive models. In this study, we used five different ML algorithms for analysis and prediction. For the analysis, the classification and regression tree provided different rules, heuristics, and patterns from the heterogeneous dataset. The random forest algorithm outperforms other prediction ML algorithms in predicting the output performance of PM6-based ToScs. Finally, we validated the ML outcomes by fabricating PM6-based ToScs. our study presents a rapid strategy for assessing a high PcE while elucidating the substantial influence of diverse descriptors.

关键词： Random forests

Metal organic chemical Vapour Deposited Thin Films of cobalt oxide Prepared via cobalt Acetylacetonate

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Journal of Materials Science & Technology 2009年第1期25卷 85-89页

作者： c.U. Mordi M.A. Eleruja B.A. Taleatu g.o. Egharevba A.V. Adedeji o.o. Akinwunmi B. olofinjana c. Jeynes E.o.B. Ajayi Department of Physics Obafemi Awolowo University Ile-Ife Nigeria Department of chemistry Obafemi Awolowo University Ile-Ife Nigeria Department of Physics Auburn University Alabama United States Department of Electronics and Electrical Engineering University of Surrey Guildford Surrey GU2 7XH UK

The single solid source precursor, cobalt （Ⅱ） acetylacetonate was prepared and characterized by infrared spectroscopy. Thin films of cobalt oxide were deposited on soda lime glass substrates through the pyrolysis （metal organic chemical vapour deposition （MocVD）） of single solid source precursor, cobalt acetylacetonate, co[c5H7o2]2 at a temperature of 420℃. The compositional characterization carried out by rutherford backscattering spectroscopy and X-ray diffraction （XRD）, showed that the films have a stoichiometry of co2o3 and an average thickness of 227±0.2 nm. A direct energy gap of 2,15±0.01 eV was calculated by the data obtained by optical absorption spectroscopy. The morphology of the films obtained by scanning electron microscopy, showed that the grains were continuous and uniformly distributed at various magnifications, while the average grain size was less than i micron for the deposited thin films of cobalt oxide.

关键词： Precursor Thin film oxide Metal organic chemical vapour deposition (MocVD) Rutherford backscattering spectroscopy (RBS)