Hauv txoj kev tshawb no, peb tau tshawb xyuas Cu/Ni nanoparticles synthesized nyob rau hauv microcarbon qhov chaw thaum lub sij hawm co-deposition los ntawm RF sputtering thiab RF-PECVD, raws li zoo raws li nyob rau hauv lub cheeb tsam deg plasmon resonance rau nrhiav pom CO gas siv Cu / Ni nanoparticles.Morphology ntawm hais.Surface morphology tau kawm los ntawm kev tshuaj xyuas 3D atomic force micrographs siv cov duab ua thiab fractal / multifractal tsom xam cov tswv yim.Kev txheeb xyuas txheeb cais tau ua tiav siv MountainsMap® Premium software nrog ob txoj kev tsom xam ntawm qhov sib txawv (ANOVA) thiab qhov ntsuas qhov sib txawv tsawg kawg.Surface nanostructures muaj kev faib tawm hauv zos thiab thoob ntiaj teb.Qhov kev sim thiab simulated Rutherford backscattering spectra tau lees paub qhov zoo ntawm nanoparticles.Cov qauv tshiab uas tau npaj tshiab tau raug xa mus rau cov pa roj carbon dioxide chimney thiab lawv siv los ua cov pa roj carbon monoxide raug tshawb xyuas los ntawm kev siv cov txheej txheem ntawm thaj chaw plasmon resonance.Qhov sib ntxiv ntawm ib txheej npib tsib xee rau saum txheej tooj liab tau nthuav tawm cov txiaj ntsig zoo ntawm ob qho tib si ntawm morphology thiab kev tshawb nrhiav roj.Kev sib xyaw ua ke ntawm kev soj ntsuam lub tso suab siab ntawm nyias zaj duab xis saum npoo av nrog Rutherford backscattering spectroscopy thiab spectroscopic tsom xam yog qhov tshwj xeeb hauv daim teb no.
Cov huab cua ceev ceev nyob rau ob peb lub xyoo dhau los, tshwj xeeb tshaj yog vim muaj kev lag luam sai, tau ua rau cov kws tshawb fawb kom paub ntau ntxiv txog qhov tseem ceeb ntawm kev kuaj cov pa roj.Hlau nanoparticles (NPs) tau pom tias yog cov ntaub ntawv cog lus rau cov pa roj sensors1,2,3,4 txawm tias piv rau cov hlau nyias nyias muaj peev xwm ntawm thaj chaw hauv cheeb tsam plasmon resonance (LSPR), uas yog ib yam khoom uas muaj zog thiab tsis muaj zog electromagnetic. nqe 5,6,7,8.Raws li tus nqi pheej yig, tsis tshua muaj tshuaj lom, thiab muaj ntau yam kev hloov pauv hlau, tooj liab yog suav tias yog ib qho tseem ceeb ntawm cov kws tshawb fawb thiab kev lag luam, tshwj xeeb tshaj yog cov tuam txhab sensor9.Ntawm qhov tod tes, nickel hloov pauv hlau catalysts ua tau zoo dua li lwm cov catalysts10.Daim ntawv thov paub zoo ntawm Cu / Ni ntawm nanoscale ua rau lawv tseem ceeb dua, tshwj xeeb tshaj yog vim lawv cov yam ntxwv tsis hloov tom qab fusion11,12.
Thaum cov hlau nanoparticles thiab lawv cov kev cuam tshuam nrog cov dielectric nruab nrab pom cov kev hloov pauv tseem ceeb hauv thaj chaw plasmon resonances, lawv tau raug siv los ua lub tsev thaiv rau kev tshawb nrhiav roj 13.Thaum lub nqus spectrum hloov, qhov no txhais tau hais tias peb yam ntawm resonant wavelength thiab / los yog nqus ncov siab siv thiab / los yog FWHM tuaj yeem hloov tau los ntawm 1, 2, 3, 4. Ntawm nanostructured nto, uas ncaj qha ntsig txog particle loj, thaj chaw hauv cheeb tsam. plasmon resonance nyob rau hauv nanoparticles, es tsis yog nyob rau hauv nyias zaj duab xis, yog ib qho tseem ceeb rau kev txheeb xyuas molecular absorption14, raws li kuj tau taw qhia los ntawm Ruiz li al.qhia txog kev sib raug zoo ntawm cov khoom zoo thiab nrhiav kom tau efficiency15.
Hais txog qhov kho qhov muag ntawm CO gas, qee cov ntaub ntawv sib xyaw xws li AuCo3O416, Au-CuO17 thiab Au-YSZ18 tau tshaj tawm hauv cov ntaub ntawv.Peb tuaj yeem xav txog kub ua cov hlau zoo sib sau ua ke nrog cov hlau oxides kom pom cov roj molecules chemically adsorbed rau saum npoo ntawm cov khoom sib xyaw, tab sis qhov teeb meem tseem ceeb ntawm cov sensors yog lawv cov tshuaj tiv thaiv ntawm chav tsev kub, ua rau lawv nkag tsis tau.
Ob peb xyoos dhau los, atomic force microscopy (AFM) tau siv los ua cov txheej txheem siab heev los ua tus yam ntxwv ntawm peb-dimensional deg micromorphology ntawm siab nanoscale daws teeb meem19,20,21,22.Tsis tas li ntawd, lub tso suab, fractal / multifractal tsom xam 23,24,25,26, lub zog spectral ntom (PSD) 27 thiab Minkowski28 functionals yog cov cuab yeej zoo tshaj plaws rau kev qhia qhov chaw saum npoo ntawm cov yeeb yaj kiab nyias.
Nyob rau hauv txoj kev tshawb no, raws li nyob rau hauv lub localized nto plasmon resonance (LSPR) absorption, acetylene (C2H2) Cu/Ni NP kab raug muab tso rau ntawm chav tsev kub rau siv raws li CO gas sensors.Rutherford backscatter spectroscopy (RBS) tau siv los txheeb xyuas qhov muaj pes tsawg leeg thiab morphology los ntawm AFM cov duab, thiab 3D topographic maps tau ua tiav siv MountainsMap® Hwm software los kawm txog qhov chaw isotropy thiab tag nrho cov micromorphological tsis ntxiv ntawm microtextures.Ntawm qhov tod tes, cov txiaj ntsig kev tshawb fawb tshiab tau pom tias tuaj yeem siv rau cov txheej txheem kev lag luam thiab muaj kev txaus siab rau kev siv tshuaj lom neeg tshawb nrhiav (CO).Cov ntaub ntawv tshaj tawm thawj zaug ntawm kev sib txuas, kev ua haujlwm thiab kev siv ntawm no nanoparticle.
Ib zaj duab xis nyias ntawm Cu / Ni nanoparticles tau npaj los ntawm RF sputtering thiab RF-PECVD co-deposition nrog 13.56 MHz fais fab mov.Cov txheej txheem yog ua raws li lub reactor nrog ob lub electrodes ntawm cov khoom sib txawv thiab qhov ntau thiab tsawg.Qhov me me yog hlau raws li lub zog hluav taws xob, thiab qhov loj dua yog grounded los ntawm stainless hlau chamber ntawm qhov deb ntawm 5 cm ntawm ib leeg.Muab SiO 2 substrate thiab Cu lub hom phiaj mus rau hauv lub chamber, ces tshem tawm lub chamber mus rau 103 N / m 2 raws li lub hauv paus siab ntawm chav tsev kub, qhia acetylene roj rau hauv chamber, thiab ces pressurize rau ambient siab.Muaj ob lub laj thawj tseem ceeb rau kev siv cov roj acetylene hauv cov kauj ruam no: thawj zaug, nws ua haujlwm ua cov pa roj carbon monoxide rau kev tsim cov ntshav ntshav, thiab thib ob, rau kev npaj cov nanoparticles hauv cov pa roj carbon ntau.Cov txheej txheem tso tawm tau ua tiav rau 30 min ntawm qhov pib roj siab thiab RF lub zog ntawm 3.5 N / m2 thiab 80 W, feem.Tom qab ntawd rhuav tshem lub tshuab nqus tsev thiab hloov lub hom phiaj rau Ni.Cov txheej txheem tso tawm tau rov ua dua ntawm qhov pib roj siab thiab RF lub zog ntawm 2.5 N / m2 thiab 150 W, feem.Thaum kawg, tooj liab thiab npib tsib xee nanoparticles tso rau hauv ib qho chaw acetylene daim ntawv tooj liab / npib tsib xee nanostructures.Saib Table 1 rau kev npaj ua qauv thiab cov cim qhia.
3D cov duab ntawm cov qauv tshiab tau sau tseg hauv 1 μm × 1 μm square scan cheeb tsam siv nanometer multimode atomic force microscope (Digital Instruments, Santa Barbara, CA) hauv hom tsis sib cuag ntawm scanning ceev ntawm 10-20 μm / min .Nrog.MountainsMap® Hwm software tau siv los ua 3D AFM daim duab qhia chaw.Raws li ISO 25178-2: 2012 29,30,31, ntau qhov kev ntsuas morphological tau sau tseg thiab sib tham, qhov siab, qhov tseem ceeb, ntim, tus cwj pwm, kev ua haujlwm, qhov chaw thiab kev sib xyaw ua ke raug txhais.
Qhov tuab thiab muaj pes tsawg leeg ntawm cov qauv npaj tshiab tau kwv yees ntawm qhov kev txiav txim ntawm MeV siv lub zog siab Rutherford backscattering spectroscopy (RBS).Nyob rau hauv cov ntaub ntawv ntawm kev soj ntsuam roj, LSPR spectroscopy tau siv los ntawm UV-Vis spectrometer nyob rau hauv lub wavelength ntawm 350 mus rau 850 nm, thaum ib tug neeg sawv cev qauv nyob rau hauv ib tug kaw stainless hlau cuvette nrog ib txoj kab uas hla ntawm 5.2 cm thiab ib qhov siab ntawm 13.8 cm. ntawm purity ntawm 99.9% CO gas flow rate (raws li Arian Gas Co. IRSQ tus qauv, 1.6 txog 16 l / h rau 180 vib nas this thiab 600 vib nas this).Cov kauj ruam no tau ua nyob rau hauv chav tsev kub, ambient humidity 19% thiab fume hood.
Rutherford backscattering spectroscopy raws li cov txheej txheem ion scattering yuav raug siv los tshuaj xyuas qhov muaj pes tsawg leeg ntawm cov yeeb yaj kiab nyias.Txoj kev tshwj xeeb no tso cai rau kom muaj nuj nqis yam tsis muaj kev siv tus qauv siv.RBS tsom xam ntsuas lub zog siab (He2+ ions, piv txwv li alpha hais) ntawm qhov kev txiav txim ntawm MeV ntawm tus qauv thiab He2+ ions backscattered ntawm lub kaum sab xis muab.Lub SIMNRA code yog qhov muaj txiaj ntsig zoo hauv kev ua qauv ntawm cov kab ncaj thiab nkhaus, thiab nws cov ntawv xa mus rau qhov kev sim RBS spectra qhia qhov zoo ntawm cov qauv npaj.RBS spectrum ntawm Cu / Ni NP qauv yog qhia hauv daim duab 1, qhov twg cov kab liab yog qhov kev sim RBS spectrum, thiab cov kab xiav yog qhov simulation ntawm SIMNRA program, nws tuaj yeem pom tias ob kab spectral zoo. kev pom zoo.Ib qho teeb meem beam nrog lub zog ntawm 1985 keV tau siv los txheeb xyuas cov ntsiab lus hauv cov qauv.Lub thickness ntawm txheej sab sauv yog hais txog 40 1E15Atom / cm2 muaj 86% Ni, 0.10% O2, 0.02% C thiab 0.02% Fe.Fe yog txuam nrog impurities hauv Ni lub hom phiaj thaum sputtering.Peaks ntawm lub hauv paus Cu thiab Ni yog pom ntawm 1500 keV, raws li, thiab peaks ntawm C thiab O2 ntawm 426 keV thiab 582 keV, feem.Cov kauj ruam Na, Si, thiab Fe yog 870 keV, 983 keV, 1340 keV, thiab 1823 keV, feem.
Square 3D topographic AFM dluab ntawm Cu thiab Cu/Ni NP zaj duab xis nto yog qhia nyob rau hauv daim duab.2. Tsis tas li ntawd, 2D topography uas tau nthuav tawm hauv txhua daim duab qhia tau hais tias NPs tau pom nyob rau hauv zaj duab xis nto coalesce mus rau hauv cov duab kheej kheej, thiab cov morphology no zoo ib yam li cov uas tau piav los ntawm Godselahi thiab Armand32 thiab Armand li al.33.Txawm li cas los xij, peb cov Cu NPs tsis tau agglomerated, thiab cov qauv uas muaj Cu tsuas pom ib tug smoother nto nrog finer peaks tshaj cov rougher sawv daws yuav (Fig. 2a).Ntawm qhov tsis sib xws, qhov qhib peaks ntawm CuNi15 thiab CuNi20 cov qauv muaj qhov pom tseeb kheej kheej thiab siv ntau dua, raws li pom los ntawm qhov siab piv hauv daim duab 2a thiab b.Qhov kev hloov pauv hauv zaj duab xis morphology qhia tau hais tias qhov chaw muaj qhov sib txawv topographical spatial qauv, uas cuam tshuam los ntawm nickel deposition sij hawm.
AFM cov duab ntawm Cu (a), CuNi15 (b), thiab CuNi20 (c) nyias zaj duab xis.Tsim nyog 2D daim duab qhia chaw, qhov siab faib thiab Abbott Firestone nkhaus yog kos rau hauv txhua daim duab.
Qhov nruab nrab grain loj ntawm nanoparticles tau kwv yees los ntawm txoj kab uas hla tis histogram tau los ntawm kev ntsuas 100 nanoparticles siv Gaussian haum raws li qhia hauv FIG.Nws tuaj yeem pom tau tias Cu thiab CuNi15 muaj tib qhov nruab nrab ntawm cov nplej loj (27.7 thiab 28.8 nm), thaum CuNi20 muaj cov nplej me me (23.2 nm), uas yog ze rau tus nqi qhia los ntawm Godselahi li al.34 (kwv yees 24 nm).Hauv cov tshuab bimetallic, lub ncov ntawm qhov chaw hauv cheeb tsam plasmon resonance tuaj yeem hloov pauv nrog kev hloov pauv ntawm cov nplej loj 35.Hauv qhov no, peb tuaj yeem txiav txim siab tias lub sijhawm ntev Ni deposition cuam tshuam rau qhov chaw plasmonic ntawm Cu / Ni nyias zaj duab xis ntawm peb lub cev.
Qhov loj me ntawm cov khoom faib ntawm (a) Cu, (b) CuNi15, thiab (c) CuNi20 nyias zaj duab xis tau los ntawm AFM topography.
Bulk morphology tseem ua lub luag haujlwm tseem ceeb hauv kev teeb tsa spatial ntawm cov qauv saum toj kawg nkaus hauv cov yeeb yaj kiab nyias.Table 2 teev qhov siab-raws li topographic tsis cuam tshuam nrog AFM daim ntawv qhia, uas tuaj yeem piav qhia los ntawm lub sijhawm qhov tseem ceeb ntawm qhov kev ntxhib los mos (Sa), skewness (Ssk), thiab kurtosis (Sku).Cov txiaj ntsig Sa yog 1.12 (Cu), 3.17 (CuNi15) thiab 5.34 nm (CuNi20), raws li kev lees paub tias cov yeeb yaj kiab ua rougher nrog nce Ni deposition sij hawm.Cov txiaj ntsig no yog piv rau cov uas tau tshaj tawm yav dhau los los ntawm Arman et al.33 (1–4 nm), Godselahi li al.34 (1–1.05 nm) thiab Zelu et al.36 (1.91–6.32 nm), qhov zoo sib xws sputtering tau ua los ntawm cov txheej txheem no los tso cov yeeb yaj kiab ntawm Cu / Ni NPs.Txawm li cas los xij, Ghosh et al.37 tso Cu/Ni multilayers los ntawm electrodeposition thiab tshaj tawm cov nqi roughness ntau dua, thaj tsam ntawm 13.8 txog 36 nm.Nws yuav tsum raug sau tseg tias qhov sib txawv ntawm kinetics ntawm qhov chaw tsim los ntawm cov txheej txheem sib txawv tuaj yeem ua rau muaj qhov sib txawv ntawm qhov sib txawv.Txawm li cas los xij, nws tuaj yeem pom tau tias RF-PECVD txoj kev siv tau zoo rau kev tau txais cov yeeb yaj kiab ntawm Cu / Ni NPs nrog qhov roughness tsis tshaj 6.32 nm.
Raws li rau qhov siab qhov profile, qhov kev txiav txim siab dua lub sijhawm Ssk thiab Sku muaj feem xyuam rau qhov asymmetry thiab normality ntawm qhov siab tis, feem.Tag nrho cov txiaj ntsig Ssk yog qhov zoo (Ssk> 0), qhia qhov ntev txoj cai tail38, uas tuaj yeem lees paub los ntawm qhov siab faib cov phiaj xwm hauv inset 2. Tsis tas li ntawd, txhua qhov siab profile tau ua tiav los ntawm lub ncov siab 39 (Sku> 3) , qhia tau hais tias qhov nkhaus Qhov siab faib yog tsawg dua tiaj tus Gaussian tswb nkhaus.Cov kab liab nyob rau hauv qhov siab faib cov phiaj xwm yog Abbott-Firestone 40 nkhaus, ib txoj hauv kev uas tsim nyog rau kev ntsuam xyuas qhov kev faib tawm ntawm cov ntaub ntawv.Cov kab no tau txais los ntawm qhov sib npaug ntawm qhov siab histogram, qhov chaw siab tshaj plaws thiab qhov tob tshaj plaws yog cuam tshuam nrog lawv qhov tsawg kawg nkaus (0%) thiab qhov siab tshaj plaws (100%).Cov kab nkhaus Abbott-Firestone no muaj tus S-zoo li tus y-axis thiab nyob rau hauv txhua rooj plaub qhia tau hais tias ib tug zuj zus nce nyob rau hauv cov feem pua ntawm cov ntaub ntawv hla dhau cheeb tsam them, pib los ntawm lub roughest thiab feem ntau khaus ncov.Qhov no lees paub cov qauv spatial ntawm qhov chaw, uas feem ntau cuam tshuam los ntawm lub sijhawm nickel deposition.
Table 3 teev qhov tshwj xeeb ISO morphology tsis cuam tshuam nrog txhua qhov chaw tau txais los ntawm AFM cov duab.Nws paub zoo tias thaj tsam rau cov khoom sib piv (Smr) thiab thaj tsam rau cov khoom sib piv (Smc) yog qhov chaw ua haujlwm tsis zoo29.Piv txwv li, peb cov txiaj ntsig tau pom tias thaj av saum toj ntawm lub dav hlau nruab nrab ntawm qhov chaw yog tag nrho cov yeeb yaj kiab (Smr = 100%).Txawm li cas los xij, qhov tseem ceeb ntawm Smr tau txais los ntawm qhov siab sib txawv ntawm qhov sib txawv ntawm qhov sib txawv ntawm cov struts41, txij li qhov parameter Smc paub.Tus cwj pwm ntawm Smc tau piav qhia los ntawm qhov nce hauv roughness ntawm Cu → CuNi20, qhov twg nws tuaj yeem pom tias qhov siab tshaj plaws roughness tus nqi tau rau CuNi20 muab Smc ~ 13 nm, thaum tus nqi rau Cu yog li 8 nm.
Blending tsis RMS gradient (Sdq) thiab tsim interface cheeb tsam piv (Sdr) yog cov tsis muaj feem xyuam rau kev ntxhib los mos flatness thiab complexity.Los ntawm Cu → CuNi20, Sdq qhov tseem ceeb yog li ntawm 7 txog 21, qhia tias qhov xwm txheej tsis xwm yeem hauv cov yeeb yaj kiab nce ntxiv thaum Ni txheej tso rau 20 min.Nws yuav tsum raug sau tseg tias qhov chaw ntawm CuNi20 tsis yog tiaj tus li Cu.Tsis tas li ntawd, nws tau pom tias tus nqi ntawm qhov parameter Sdr, txuam nrog qhov nyuaj ntawm qhov chaw microtexture, nce los ntawm Cu → CuNi20.Raws li kev tshawb fawb los ntawm Kamble et al.42, qhov nyuaj ntawm qhov chaw microtexture nce nrog nce Sdr, qhia tau hais tias CuNi20 (Sdr = 945%) muaj qhov nyuaj ntawm qhov chaw microstructure piv rau Cu films (Sdr = 229%)..Qhov tseeb, qhov kev hloov pauv hauv microscopic complexity ntawm kev ntxhib los mos plays lub luag haujlwm tseem ceeb hauv kev faib tawm thiab cov duab ntawm cov peaks ntxhib, uas tuaj yeem pom los ntawm cov yam ntxwv ntawm qhov siab ceev (Spd) thiab cov lej txhais tau tias ncov curvature (Spc).Nyob rau hauv no hais txog, Spd nce los ntawm Cu → CuNi20, qhia tias lub ncov yog ntau densely koom nrog nce Ni txheej thickness.Tsis tas li ntawd, Spc kuj nce los ntawm Cu → CuNi20, qhia tias lub ncov zoo ntawm qhov chaw ntawm Cu qauv yog sib npaug (Spc = 612), thaum lub CuNi20 yog sharper (Spc = 925).
Cov ntaub ntawv ntxhib ntawm txhua zaj duab xis kuj qhia txog cov qauv sib txawv hauv qhov ncov, qhov tseem ceeb, thiab qhov chaw ntawm qhov chaw.Qhov siab ntawm cov tub ntxhais (Sk), txo qis ncov (Spk) (saum lub hauv paus), thiab trough (Svk) (hauv qab cov tub ntxhais) 31,43 yog ntsuas ntsuas perpendicular mus rau saum npoo dav hlau30 thiab nce los ntawm Cu → CuNi20 vim qhov nto roughness Qhov tseem ceeb nce.Ib yam li ntawd, cov khoom siv ncov (Vmp), cov khoom siv tseem ceeb (Vmc), trough void (Vvv), thiab core void volume (Vvc) 31 qhia tib yam li txhua qhov txiaj ntsig nce los ntawm Cu → CuNi20.Qhov kev coj cwj pwm no qhia tau tias CuNi20 nto tuaj yeem tuav cov kua ntau dua li lwm cov qauv, uas yog qhov zoo, qhia tias qhov chaw no yooj yim dua rau smear44.Yog li ntawd, nws yuav tsum tau muab sau tseg tias raws li lub thickness ntawm cov nickel txheej nce los ntawm CuNi15 → CuNi20, cov kev hloov nyob rau hauv lub topographic profile lag tom qab cov kev hloov nyob rau hauv ntau dua-order morphological tsis, cuam tshuam rau lub nto microtexture thiab spatial qauv ntawm zaj duab xis.
Qhov kev ntsuam xyuas zoo ntawm qhov kev ntxhib los mos ntawm lub ntsej muag zaj duab xis tau txais los ntawm kev tsim ib daim ntawv qhia AFM topographic siv lub lag luam MountainsMap45 software.Cov rendering yog qhia nyob rau hauv daim duab 4, uas qhia tau hais tias ib tug sawv cev zawj thiab ib tug polar zaj duab xis hais txog ntawm qhov chaw.Table 4 teev cov qhov thiab qhov chaw xaiv.Cov dluab ntawm cov grooves qhia tau hais tias tus qauv yog dominated los ntawm ib tug zoo xws li system ntawm raws nrog ib tug pronounced homogeneity ntawm cov grooves.Txawm li cas los xij, qhov tsis zoo rau ob qho tib si qhov siab tshaj plaws qhov tob (MDF) thiab qhov nruab nrab qhov tob qhov tob (MDEF) nce los ntawm Cu mus rau CuNi20, lees paub cov kev soj ntsuam yav dhau los txog lub peev xwm lubrication ntawm CuNi20.Nws yuav tsum raug sau tseg tias Cu (Fig. 4a) thiab CuNi15 (Fig. 4b) cov qauv tau xyaum ua tib yam xim, uas qhia tau hais tias lub microtexture ntawm Cu zaj duab xis nto tsis tau hloov pauv tseem ceeb tom qab Ni zaj duab xis tso rau 15. min.Hauv qhov sib piv, cov qauv CuNi20 (Fig. 4c) nthuav tawm wrinkles nrog cov xim sib txawv, uas muaj feem xyuam rau nws cov nqi siab dua MDF thiab MDEF.
Grooves thiab nto isotropy ntawm microtextures ntawm Cu (a), CuNi15 (b), thiab CuNi20 (c) films.
Polar daim duab hauv daim duab.4 kuj qhia tau hais tias qhov chaw microtexture txawv.Nws yog noteworthy tias lub deposition ntawm Ni txheej ho hloov lub spatial qauv.Kev ntsuas microtextural isotropy ntawm cov qauv yog 48% (Cu), 80% (CuNi15), thiab 81% (CuNi20).Nws tuaj yeem pom tau tias qhov tso tawm ntawm Ni txheej pab txhawb rau kev tsim cov isotropic microtexture ntau dua, thaum ib txheej Cu zaj duab xis muaj ntau dua anisotropic nto microtexture.Tsis tas li ntawd, qhov tseem ceeb spatial zaus ntawm CuNi15 thiab CuNi20 yog qis dua vim lawv qhov loj autocorrelation ntev (Sal)44 piv rau Cu kuaj.Qhov no tseem ua ke nrog cov txiaj ntsig zoo sib xws uas tau nthuav tawm los ntawm cov qauv no (Std = 2.5 ° thiab Std = 3.5 °), thaum tus nqi loj heev tau sau tseg rau tus qauv Cu (Std = 121 °).Raws li cov txiaj ntsig no, tag nrho cov yeeb yaj kiab nthuav tawm qhov ntev ntawm qhov sib txawv ntawm qhov sib txawv ntawm cov morphology, topographic profiles, thiab roughness.Yog li, cov txiaj ntsig no qhia tau tias Ni txheej txheej sijhawm tso tawm lub luag haujlwm tseem ceeb hauv kev tsim cov CuNi bimetallic sputtered nto.
Txhawm rau kawm txog LSPR tus cwj pwm ntawm Cu / Ni NPs hauv huab cua ntawm chav tsev kub thiab ntawm qhov sib txawv CO gas fluxes, UV-Vis absorption spectra tau siv nyob rau hauv lub wavelength ntau ntawm 350-800 nm, raws li qhia hauv daim duab 5 rau CuNi15 thiab CuNi20.Los ntawm kev qhia cov pa roj sib txawv ntawm qhov sib txawv, qhov ua tau zoo LSPR CuNi15 ncov yuav ua kom dav, qhov nqus yuav muaj zog dua, thiab lub ncov yuav hloov (redshift) mus rau siab dua wavelengths, los ntawm 597.5 nm hauv airflow mus rau 16 L / h 606.0 nm.CO txaus rau 180 vib nas this, 606.5 nm, CO ntws 16 l / h rau 600 vib nas this.Ntawm qhov tod tes, CuNi20 nthuav tawm tus cwj pwm txawv, yog li kev nce hauv CO roj ntws ua rau txo qis hauv LSPR peak wavelength txoj hauj lwm (blueshift) los ntawm 600.0 nm ntawm huab cua ntws mus rau 589.5 nm ntawm 16 l / h CO ntws rau 180 s. .16 l / h CO ntws rau 600 vib nas this ntawm 589.1 nm.Raws li nrog CuNi15, peb tuaj yeem pom lub ncov dav dua thiab muaj zog ntxiv rau CuNi20.Nws tuaj yeem kwv yees tias nrog kev nce hauv cov tuab ntawm Ni txheej ntawm Cu, nrog rau kev nce hauv qhov loj thiab tus naj npawb ntawm CuNi20 nanoparticles es tsis txhob CuNi15, Cu thiab Ni hais txog ib leeg, lub amplitude ntawm hluav taws xob oscillations nce. , thiab, yog li ntawd, qhov zaus nce.uas txhais tau tias: lub wavelength txo qis, kev hloov xiav tshwm sim.
Post lub sij hawm: Aug-16-2023