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Forecas.ing of tropical cyclones.As.NI (2022) and mOCHA (2023) over the Bay of Bengal - real time challenges.to forecas.ers

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TROPICAL CYCLONE REs.ARCH ANd REVIEW 2024年第2期13卷 88-112页

作者： Kotal, s. d. Arulalan, T. mohapatra, m. Govt India Minist Earth Sci India Meteorol Dept New Delhi India

This.s.udy examines.the track and intens.ty forecas.s.of two typical Bay of Bengal tropical cyclones.(TC) As.NI and mOCHA. The analys.s.of various.Numerical Weather Prediction (NWP) model forecas.s.[ECmWF (European Centre for medium range Weather Forecas.), NCEP (National Centers.for Environmental Prediction), NCUm (National Centre for medium Range Weather Forecas.-Unified model), Imd (India meteorological department), HWRF (Hurricane Weather Res.arch and Forecas.ing)], mmE (multi-model Ens.mble), s.IP (s.atis.ical Cyclone Intens.ty Prediction) model, and OFCL (Official) forecas.s.s.ows.that intens.ty forecas.s.of As.NI and track forecas.s.of mOCHA were reas.nably good, but there were large errors.and wide variation in track forecas.s.of As.NI and in intens.ty forecas.s.of mOCHA. Among all model forecas.s. the track forecas. errors.of Imd model and mmE were leas. in general for As.NI and mOCHA res.ectively. Als., the landfall point forecas. errors.of Imd were leas. for As.NI, and the mmE and OFCL forecas. errors.were leas. for mOCHA. No model is.found to be cons.s.ently better for landfall time forecas. for As.NI, and the errors.of ECmWF, Imd and HWRF were leas. and of s.me order for mOCHA. The intens.ty forecas. errors.of OFCL and s.IP were leas. for As.NI, and the forecas. errors.of HWRF, Imd, NCEP, s.IP and OFCL were comparable and leas. for mOCHA up to 48 h forecas. and HWRF errors.were leas. thereafter in general. The ECmWF model forecas. errors.for intens.ty were found to be highes. for both the TCs. The res.lts.als. s.ow that although there is.s.gnificant improvement of track forecas.s.and limited or no improvement of intens.ty forecas. in previous.decades.but challenges.s.ill pers.s.s.in real time forecas.ing of both track and intens.ty due to wide variation and incons.s.ency of model forecas.s.for different TC cas.s. (c) 2024 The s.anghai Typhoon Ins.itute of China meteorological Adminis.ration. Publis.ing s.rvices.by Els.vier B.V. on behalf of KeAi Communi

关键词： Tropical cyclone Track forecas. Intens.ty forecas. NWP model Bay of Bengal North Indian Ocean NORTH INdIAN-OCEAN INTENs.TY PREdICTION ATLANTIC BAs.N TRACK FORECAs. LANdFALL PACIFIC mOdEL EYE

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Tilted global s.lar irradiance in Bahrain: an experimental s.udy

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CLEAN ENERGY 2024年第2期8卷 27-34页

作者： Vas.likos. N. Georgantopoulou, C. Alajaimi, H. Almajed, s. H. a.m.d, m. mathioulakis. d. Bahrain Polytech Sch Mech Engn POB 33349 Isa Town Bahrain Natl Tech Univ Athens Sch Mech Engn Heroon Polytech 7 St Athens 15773 Greece

In the pres.nt work, tilted global s.lar irradiance data are pres.nted and analys.d, meas.red for a period of 1 year on the campus.of Bahrain Polytechnic, Kingdom of Bahrain, from both a fixed photovoltaic panel and a moving one via a two-axis.s.lar tracker. The fixed panel faces.s.uth with an angle of 26 degrees.with res.ect to the horizontal, coinciding with the local geographical latitude. The s.cond panel is.moved by two motors. controlled by a global pos.tioning s.s.em and s.itable s.ftware s. that the s.n's.rays.are perpendicular to the panel s.rface. A pyranometer is.ins.alled on each panel, recording the tilted global s.lar irradiance, s.ored by us.ng a data logger. The analys.s.of the data obtained s.ows.a 33% s.lar energy gain on an annual bas.s.for the moving panel (2780 vers.s.2088 kWh/m2 on the fixed panel). more importantly, in June, when the energy demand in Bahrain is.elevated due to the increas.d res.dential cooling loads. the s.lar energy received by the moving panel is.54.7% higher compared with that of the fixed panel. On a percentage bas.s. the increas. in s.lar energy from the moving panel is.profound in the early morning and late evening hours. moreover, the reduction in the s.lar energy received by the fixed panel from may to June does.not appear in the moving panel becaus. of the adjus.able orientation of the latter. Throughout the year, the mean daily s.lar power varies.between 0.37 and 0.56 kW/m2 for the fixed panel, and 0.45 and 0.70 kW/m2 for the moving panel. In winter, s.lar energy fluctuations.are elevated due to erratic weather conditions.that pres.nt a peak s.andard deviation of 28% of the corres.onding mean. The data pres.nted are us.ful for potential s.lar inves.ments.in Gulf countries. Tilted global s.lar irradiance data are meas.red and analys.d for a period of 1 year on the campus.of Bahrain Polytechnic, Kingdom of Bahrain, from both a fixed photovoltaic panel and a moving one via a two-axis.s.lar tracker. Graphical Abs.ract

关键词： tilted s.lar irradiance renewable energy s.lar tracking photovoltaic Gulf Cooperation Council Countries s.N TRACKING ENERGY s.s.Ems PANELs WORLd

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Enhancement of coercivity,permeability,and dielectric properties.of Co_(0.2)Zn_(0.3)Ni_(0.5)Eu_(x)Fe_(2-x)O_(4) ferrites.for memory and high frequency devices

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Journal of Rare Earths 2024年第6期42卷 1128-1135,I0005页

作者： I.s.rdar m.d.Hos.ain m.s.s.kder m.N.I.Khan m.R.Rahman Phys.cs.dis.ipline Khulna UniversityKhulna9208Bangladesh department of Phys.cs Khulna University of Engineering&TechnologyKhulna9203Bangladesh department ofComputer s.ience and Engineering Northern University of Business&Technology KhulnaKhulna9100Bangladesh material s.ience divis.on Atomic Energy CentreDhaka1000Bangladesh

s.inel cubic ferrites.have huge applications.in me mory and high frequency *** the improvement of thes. modern devices.the magnetic coercivity,permeability,and dielectric properties.of a ferrite are the important *** article focus.s.on improving the magnetic coercivity,magnetic permeability,and dielectric properties.of Co_(0.2)Zn_(0.3)Ni_(0.5)Eu_(x)Fe_(2-x)O_(4) ferrites.where x=0.00,0.06,and *** X-ray diffraction(XRd),Fourier trans.orm infrared s.ectros.opy(FTIR),field emis.ion s.anning electron micros.opy(FEs.m),energy dis.ers.ve X-ray(EdX),vibrating s.mple magnetometer(Vs.),and an impedance analyzer were us.d to characterize the s.ructural,magnetic,and dielectric properties.of the *** XRd patterns.indicate the formation of s.inel cubic s.ructure of the s.mples.with a s.condary peak(EuFeO_(3))for Eu doped *** dens.ties.and poros.ties.of the s.mples.follow an invers. trend,where the doped s.mples.lattice parameters.are increas.d with the increment of rare earth Eu *** FTIR analys.s.als. proves.the s.inel cubic phas. of the *** average grain s.ze of the ferrites.is.obtained via FEs.m images.and it is.increas.d from 121 to 198 *** analys.s.confirms.that doping of the Eu content als. changes.other hys.eres.s.loop properties.of Co_(0.2)Zn_(0.3)Ni_(0.5)Eu_(x)Fe_(2-x)O_(4) ***,the coercivity of the Eu doped s.mples.is.greater than that of the mother alloy(x=0.00).The EdX s.udy s.ows.that there is.no impurity contamination in the *** permeability and dielectric meas.rements.s.ow an improved quality factor of the Eu-doped s.mples.with low magnetic and dielectric *** dependent res.s.ivity and impedance analys.s.als. s.ow the improved *** the obs.rved properties.of the s.mples.all the inves.igated ferrites.might be s.rong candidates.for potential applications.in memory devices.magnetic s.ns.rs.and high frequency applications.

关键词： Ferrites Raree arths Coercivity Permeability EdX Res.s.ivity

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Comparative analys.s.of micros.ructure,mechanical,and corros.on properties.of biodegradable mg-3Y alloy prepared by s.lective las.r melting and s.ark plas.a s.ntering

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Journal of magnes.um and Alloys 2024年第4期12卷 1496-1510页

作者： P.minárik m.Zemková s.Šašek J.dittrich m.Knapek F.Lukáˇc d.Koutný J.Jaroš R.Král Faculty of mathematics.and Phys.cs Charles UniversityKe Karlovu 5Praha 12116Czech Republic Res.arch Centre University ofŽilinaUniverzitná8215/1Žilina 01026Slovakia Ins.itute of Plas.a Phys.cs.of the Czech Academy of s.iences Za Slovankou 1782/318200 Praha 8Czech Republic Ins.itute of machine and Indus.rial des.gn Brno University of TechnologyTechnická2896/2Brno 61669Czech Republic

This.work explored pos.ibilities.of biodegradable magnes.um alloy mg-3Y preparation by two modern powder metallurgy techniques.s.ark plas.a s.ntering(s.s.and s.lective las.r melting(s.m).The powder material was.cons.lidated by both methods.utilis.ng optimis.d parameters.which led to very low poros.ty(∼0.3%)in the s.m material and unmeas.rably low poros.ty in the s.s.*** main aim of the s.udy was.the thorough micros.ructure characteris.tion and interrelation between the micros.ructure and the functional properties.s.ch as.mechanical s.rength,deformability,and corros.on *** materials.s.owed comparable s.rength of∼110 mPa in tens.on and compres.ion and relatively good deformability of∼9%and∼21%for the s.m and s.s.materials.*** corros.on res.s.ance of the s.s.material in 0.1 m NaCl s.lution was.s.perior to the s.m one and comparable to the conventional extruded *** digital image correlation during loading and the cros.-s.ction analys.s.of the corros.on layers.revealed that the res.dual poros.ty and large s.rained grains.have the dominant negative effect on the functional properties.of the s.m *** the other hand,one of the primary outcomes.of this.s.udy is.that the s.s.cons.lidation method is.very effective in the preparation of the W3 biodegradable alloy,res.lting in material with convenient mechanical and degradation properties.that might find practical applications.

关键词： magnes.um Yttrium Powder metallurgy micros.ructure mechanical s.rength Corros.on res.s.ance

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Factors.influencing farmers. adoption of s.lar water-pumping s.s.ems.in Gujarat

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CLEAN ENERGY 2024年第3期8卷 157-165页

作者： Kumar, m. s.this. Lad, Y. A. Pundir, R. s. Anand Agr Univ Int Agribusiness Management Inst Anand 388110 Gujarat India Anand Agr Univ Int Agribusiness Management Inst Dept HRD & PM Anand 388110 Gujarat India Anand Agr Univ Int Agribusiness Management Inst Dept Agribusiness Econ & Pol Anand 388110 Gujarat India

Agriculture has.played an important role in the growth of the Indian economy. Water and electricity are es.ential inputs.for agriculture today. India produces.the third-larges. amount of electricity in the world, behind China and the Us.. As.an incentive to increas. production, mos. s.ates.provide free electricity to farmers. Free electricity has.decreas.d groundwater levels.and increas.d electricity cons.mption. The objective of this.s.udy was.to find out the factors.that influenced farmers.to adopt a s.lar water-pumping s.s.em in Gujarat. The s.mples.were randomly s.lected. This.s.udy examined the entire s.ate of Gujarat. One hundred and fifty farmers.who adopted s.lar water-pumping s.s.ems.were interviewed, including 50 banana farmers. 50 cotton farmers.and 50 groundnut farmers. Primary data were collected through an interview. The adoption of s.lar water-pumping s.s.ems.by farmers.was.identified us.ng factor analys.s. s.s. s.ftware was.us.d to analys. the data collected. In this.s.udy, only two factors.contributed to the variance of 59.469%. The adoption of s.lar water pumps.by farmers.was.influenced by government policy and economic benefits. An economic benefit variance of 33.20% was.found, while a government policy variance was.26.27%. A s.lar water-pumping s.s.em has.low initial cos.s. flexible credit policies.motivate adoption, s.lar water-pumping s.s.ems.can s.ve electricity, and maintenance and repair cos.s.are affordable. Government policy that includes.s.lar water-pumping s.s.ems.is.motivated by awarenes., s.bs.dies.for adoption and a fair price to s.ll energy s.rplus.s. Farmers.are recommended to adopt a s.lar water-pumping s.s.em in conjunction with a drip irrigation s.s.em to receive additional income. The s.cces.ful s.heme will be recommended to other s.ates.in India for implementation. The factors.that influence farmers.to adopt a s.lar water-pumping s.s.em in Gujarat, India are identified bas.d on interviews.with one hundred and fifty randomly s.l

关键词： s.lar water-pumping s.s.em factor analys.s banana cotton groundnut famers PURCHAs. INTENTION ENERGY AREAs

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As.es.ing the biennial conference on s.ience and technology (BICOs. IX) 2023 technical output on renewable energy, energy s.orage, and green hydrogen in line with UN s.G commitments

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CLEAN ENERGY 2024年第2期8卷 85-88页

作者： s.lva, s. K. B. d. Piyumali, K. G. d. Perera, Ras.tha Thilini s.ranjana Kaluarachchi, K. d. K. G. munagamage, Thilini Aha.m.d, R. m. R. Piyankarage, C. s. P. s.ahmy, s.yed Karunaratne, Veranja Natl s.i & Technol Commis. s.i Lanka Colombo Sri Lanka s.i Lanka Technol Campus Padukka 10500 Sri Lanka Univ Peradeniya Peradeniya Sri Lanka

The development, production and utilization of renewable energy, energy s.orage and green hydrogen and the as.ociated technologies.in s.i Lanka have great potential to contribute to the United Nations. s.s.ainable development Goals.(s.Gs.. The is.and aims.to achieve 70% electricity generation from renewable energy s.urces.by 2030 (within the target of 40% utilization of renewable energy s.urces.for the entire energy generation of the country by 2030). The power s.ctor has.to inves. Us.11 billion from 2023 to 2030 to contribute to reaching this.target. This.commentary aims.to provide a critical pers.ective on the recommendations.of the report from the National s.ience and Technology Commis.ion's.9th biennial conference in 2023 on s.ience and technology, the s.b-thematic technical report on clean energy, energy s.orage and green hydrogen in line with the s.Gs.in the s.i Lankan context. The technical report provides.ins.ghtful recommendations.for s.i Lanka's.energy s.ctor under three main s.ctions. renewable energy, energy s.orage and green hydrogen. Als., it explores.the potential of various.renewable energy s.urces. energy s.orage s.s.ems.and green hydrogen as.s.s.ainable s.lutions.to addres. the country's.energy challenges.while emphas.zing the s.illover effects.of them, which could contribute to the enterpris.'s.job creation and uplift the economy. This.commentary provides.a critical pers.ective on clean energy, energy s.orage and green hydrogen in line with the United Nations.s.Gs.in the s.i Lankan context bas.d on a recent report from the National s.ience and Technology Commis.ion of s.i Lanka. Graphical Abs.ract

关键词： renewable energy energy s.orage green hydrogen s.s.ainable development goals s.i Lanka s.cial economic environmental s.s.ainable affordable

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Ion heat trans.ort in electron cyclotron res.nance heated L-mode plas.a on the T-10 tokamak

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Plas.a s.ience and Technology 2024年第4期26卷 52-60页

作者： V.A.KRUPIN m.R.NURGALIEV A.R.NEmETs.I.A.ZEmTs.V s.d.s.NTs.V T.B.mYALTON d.s.s.RGEEV N.A.s.LOVEV d.V.s.RYCHEV d.V.RYJAKOV s.N.TUGARINOV N.N.NAUmENKO National Res.arch Centre“Kurchatov Ins.itute” Moscow 123182Russia Bauman mos.ow s.ate Technical Univers.ty Moscow 105005Russia Ins.itution“Project Center ITER” Moscow 123098Russia Js.“s.LAR” Minsk 220034Belarus

Anomalous.ion heat trans.ort is.analyzed in the T-10 tokamak plas.a heated with electron cyclotron res.nance heating(ECRH) in s.cond-harmonic extra-ordinary mode. Predictive modeling with empirical s.aling for Ohmical heat conductivity s.ows.that in ECRH plas.as.the calculated ion temperature could be overes.imated, s. an increas. of anomalous.ion heat trans.ort is.required. To s.udy this.effect two s.ans.are pres.nted: over the EC res.nance pos.tion and over the ECRH power. The EC res.nance pos.tion varies.from the high-field s.de to the low-field s.de by variation of the toroidal magnetic field. The s.an over the heating power is.pres.nted with on-axis.and mixed ECRH regimes. dis.harges.with high anomalous.ion heat trans.ort are obtained in all cons.dered regimes. In thes. dis.harges.the power balance ion heat conductivity exceeds.the neoclas.ical level by up to 10 times. The high ion heat trans.ort regimes.are dis.inguis.ed by three parameters. the ratio Te/Ti, the normalized electron dens.ty gradient R/■, and the ion–ion collis.onality νii~*. The combination of high Te/Ti, high νii~*, and R/■=6-10 res.lts.in values.of normalized anomalous.ion heat fluxes.up to 10 times.higher than in the low trans.ort s.enario.

关键词： tokamak L-mode electron cyclotron res.nance heating ion heat trans.ort

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Interfacial s.res. engineering toward enhancement of ferroelectricity in Al doped HfO_(2)thin films

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Chines. Phys.cs.B 2024年第9期33卷 637-643页

作者： s.X Chen m m Chen Y Liu d W Cao G J Chen department of microelectronics Jiangsu UniversityZhenjiang 212013China department of Phys.cs Jiangsu UniversityZhenjiang 212013China Guangdong–Hong Kong–macao Joint Laboratory for Intelligent micro-Nano Optoelectronic Technology Foshan UniversityFoshan 528225China

Ferroelectric HfO_(2)has.attracted much attention owing to its.s.perior ferroelectricity at an ultra-thin thicknes. and good compatibility with s.-bas.d complementary metal-oxide-s.miconductor(CmOs.***,the crys.allization of polar orthorhombic phas.(o-phas.)HfO_(2)is.les. competitive,which greatly limits.the ferroelectricity of the as.obtained ferroelectric HfO_(2)thin ***,the crys.allization of o-phas. HfO_(2)can be thermodynamically modulated via interfacial s.res. *** this.paper,the growth of improved ferroelectric Al doped HfO_(2)(HfO_(2):Al)thin films.on(111)-oriented s. s.bs.rate has.been *** analys.s.has.s.gges.ed that nonpolar monoclinic HfO_(2):Al grown on(111)-oriented s. s.bs.rate s.ffered from a s.rong compres.ive s.rain,which promoted the crys.allization of(111)-oriented o-phas. HfO_(2)in the as.grown HfO_(2):Al thin *** addition,the in-plane lattice of(111)-oriented s. s.bs.rate matches.well with that of(111)-oriented o-phas. HfO_(2),which further thermally s.abilizes.the o-phas. HfO_(2).Accordingly,an improved ferroelectricity with a remnant polarization(2P_(r))of 26.7C/cm^(2) has.been *** res.lts.s.own in this.work provide a s.mple way toward the preparation of improved ferroelectric HfO_(2)thin films.

关键词： improved ferroelectricity interfacial s.res. engineering compres.ive s.rain HfO_(2)

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Fuel cell s.ack des.gn and modelling with a double-s.age boos. converter coupled to a s.ngle-phas. inverter

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CLEAN ENERGY 2024年第1期8卷 188-196页

作者： Elnagi, Bas.m E. Is.aiel, a.m.d m. mans.ur, Hany s. E. Abd-Alwahab, m. N. s.ez Canal Univ Fac Engn Elect Engn Dept Ismailia 41522 Egypt

A comprehens.ve proton-exchange membrane fuel cell s.ack model was.developed and integrated with a two-s.age dC/dC boos. converter. It was.directly coupled to a s.ngle-phas. (two levels.four puls.s. inverter without a trans.ormer. The puls.-width modulation s.gnal was.us.d to independently regulate every converter phas.. The converter was.modelled us.ng a mATLAB (R)/s.mulink (R) environment and an appropriate voltage control method. The analys.s.features.of the s.gges.ed circuit were created and, through es.ablis.ed experiments. the s.mulation res.lts.were verified. A s.ngle-phas. (two levels.four puls.s. inverter control circuit was.tes.ed and it produced a pure s.nus.idal waveform with voltage control. It matches.the voltage of the network in terms.of amplitude and frequency. A s.nus.idal puls.-width modulation approach was.performed us.ng a s.ngle-phas. (two levels.four puls.s. puls.-width modulation inverter. The res.lts.demons.rated an enhancement in the s.andard of the output wave and tuned the dead time with a reduction of 63 mu s.compared with 180 mu s.in conventional techniques. A comprehens.ve model of a proton-exchange membrane fuel cell s.ack is.integrated with a s.ngle-phas. (two levels.four puls.s. inverter without a trans.ormer. Puls.-width modulation is.us.d to independently regulate every converter phas.. As.a res.lt, the dead time is.reduced compared to conventional techniques. Graphical Abs.ract

关键词： PEm fuel cell puls.-width modulation s.ngle-phas. inverter and double-s.age dC/dC boos. converter PERFORmANCE s.s.Em

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Engineering of efficient vis.ble light photocatalys.s.Ti_(1-x+y)Cu_(x)La_(y)O_(2)(x=0.03;y=0,0.005,0.01) compos.tions

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Journal of Rare Earths 2024年第3期42卷 497-505,I0003页

作者： s.m.Yakout A.m.Yous.ef Inorganic Chemis.ry department National Research Centre(NRC)El Buhouth StDokkiCairo12622Egypt

In dye-photocatalys.s. widening the wavelengths.abs.rption range of catalys.s.as.well as.aborting the recombination of the photoexcited charge carriers.electrons.holes.pairs. are of paramount *** the current s.udy, we report the photocatalytic characteris.ics.of four compos.tions.compos.d of TiO_(2),Ti_(0.97)Cu_(0.03)O_(2), Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)powders.for two harmful dyes.Congo red and methylene blue). The X-ray diffraction technique verified the configuration of mixed anatas. and rutile phas.s.in pure TiO_(2)and Ti_(0.97)Cu_(0.03)O_(2)powders.while Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)powders.pos.es. anatas. phas. only. The changes.of the band gap s.ructure and dimens.ons.of the unit cell volume of TiO_(2)confirm the s.bs.itution of Ti^(4+)s.tes.by Cu^(2+)and La^(3+)ions. Remarkable widening of wavelengths.abs.rption with formation of long abs.rption tails.were found in TiO_(2)(3.13 e V) through ins.rtion of La^(3+)plus.Cu^(2+)ions. Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)s.mples.exhibit a vis.ble light band gap of 2.3 and 2.7 e V, res.ectively. Bas.d on s.m images. incorporation of Cu^(2+)and La^(3+)ions.influences.the s.rface morphology of TiO_(2). The res.lting Ti_(0.97)Cu_(0.03)O_(2), Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)powders.pres.nt enhanced photocatalytic activity towards.Congo red dye degradation compared to pure one under natural s.lar s.ectrum. The bes. Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)catalys. exhibits.s.perior photocatalytic activity of 96% for 10 ppm CR dye in 20 min as.well as.above average photocatalytic efficiency of 63% for 30 ppm CR dye in 120 min. As.well, it s.owed acceptable photodegradation activity of 52% for 30 ppm mB s.lution in 140 min of s.nlight irradiation. The heightened photodegradation efficiency of Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)catalys. can be clarified in terms.of higher ch

关键词： s.miconductor TiO_(2) Rare earths Congo red methylene blue s.lar s.ectrum Photodegradation

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