Kulolu cwaningo, siphenye ama-Cu/Ni nanoparticles ahlanganiswe emithonjeni ye-microcarbon ngesikhathi sokubekwa ngokubambisana yi-RF sputtering kanye ne-RF-PECVD, kanye ne-plasmon resonance yasendaweni ukuze kutholwe igesi ye-CO kusetshenziswa i-Cu/Ni nanoparticles.I-morphology yezinhlayiya.I-Surface morphology yacwaningwa ngokuhlaziya ama-micrographs e-3D athomic force kusetshenziswa ukucubungula izithombe kanye namasu okuhlaziya ama-fractal/multifractal.Ukuhlaziywa kwezibalo kwenziwe kusetshenziswa isofthiwe ye-MountainsMap® Premium enokuhlaziywa okukabili kokuhluka (ANOVA) kanye nokuhlola umehluko obalulekile.I-Surface nanostructures inokusabalalisa okuqondile kwendawo kanye nomhlaba jikelele.I-spectra yokusakazwa kwe-backscattering ka-Rutherford yokuhlola futhi eyenziwe yaqinisekisa ikhwalithi yama-nanoparticles.Amasampula asanda kulungiswa abe esevezwa kushimula we-carbon dioxide futhi ukusetshenziswa kwawo njengenzwa yegesi kwaphenywa kusetshenziswa indlela yendawo yendawo ye-plasmon resonance.Ukwengezwa kongqimba lwe-nickel phezu kongqimba lwethusi kubonise imiphumela ethokozisayo kokubili ngokwendlela yokuma nokutholwa kwegesi.Inhlanganisela yokuhlaziywa kwe-stereo okuthuthukisiwe kwefilimu ezacile yendawo yefilimu ene-Rutherford backscattering spectroscopy kanye nokuhlaziywa kwe-spectroscopic ihlukile kulo mkhakha.
Ukungcoliswa komoya okusheshayo emashumini ambalwa eminyaka adlule, ikakhulukazi ngenxa yokukhula ngokushesha kwezimboni, kuye kwashukumisela abacwaningi ukuba bafunde okwengeziwe ngokubaluleka kokuthola amagesi.I-Metal nanoparticles (NPs) ikhonjiswe njengezinto ezithembisayo zezinzwa zegesi1,2,3,4 ngisho noma iqhathaniswa namafilimu ensimbi azacile akwazi ukwenza i-surface plasmon resonance (LSPR), okuwuketshezi oluzwana ne-electromagnetic enamandla futhi elinganiselwe ngokunamandla. izinkambu5,6,7,8.Njengensimbi engabizi, enobuthi obuphansi, futhi eguquguqukayo, ithusi lithathwa njengento ebalulekile ngososayensi nezimboni, ikakhulukazi abakhiqizi bezinzwa9.Ngakolunye uhlangothi, ama-catalysts we-nickel transition metal enza kangcono kunamanye ama-catalysts10.Ukusetshenziswa okwaziwayo kwe-Cu/Ni ku-nanoscale kubenza babaluleke nakakhulu, ikakhulukazi ngoba izakhiwo zabo zesakhiwo azishintshi ngemva kokuhlanganiswa11,12.
Nakuba ama-nanoparticles ensimbi kanye nokuxhumana kwawo ne-dielectric medium kubonisa izinguquko eziphawulekayo kuma-resonances e-plasmon asendaweni, asetshenziswe njengezivimbi zokwakha zokutholwa kwegesi13.Uma i-spectrum yokumuncwa ishintsha, lokhu kusho ukuthi izici ezintathu ze-wavelength ezwakalayo kanye/noma ukuqina kokumunca kanye/noma i-FWHM ingashintsha ngo-1, 2, 3, 4. Ezindaweni ezine-nanostructured, ezihlobene ngokuqondile nosayizi wezinhlayiyana, indawo eyenziwe yasendaweni. i-plasmon resonance kuma-nanoparticles, kunokuba kumafilimu amancane, iyisici esisebenzayo sokuhlonza ukumuncwa kwamangqamuzana14, njengoba kuphinde kwaphawulwa nguRuiz et al.ibonise ubudlelwano phakathi kwezinhlayiya ezinhle kanye nokusebenza kahle kokutholwa15.
Mayelana nokutholwa kokubonwa kwegesi ye-CO, ezinye izinto eziyinhlanganisela ezifana ne-AuCo3O416, Au-CuO17 kanye ne-Au-YSZ18 zibikiwe ezincwadini.Singacabanga ngegolide njengensimbi ehloniphekile ehlanganiswe nama-oxide ensimbi ukuze ibone amangqamuzana egesi akhangiswe ngamakhemikhali endaweni eyinhlanganisela, kodwa inkinga enkulu ngezinzwa ukusabela kwazo ekamelweni, okuzenza zingafinyeleleki.
Emashumini ambalwa eminyaka adlule, i-atomic force microscopy (AFM) iye yasetshenziswa njengendlela ethuthukisiwe ukuze ibonise i-micromorphology ye-three-dimensional surface nanoscale resolution19,20,21,22.Ukwengeza, i-stereo, fractal/multifractal analysis23,24,25,26, power spectral density (PSD)27 kanye neMinkowski28 functionals angamathuluzi esimanjemanje okukhombisa indawo engaphezulu yamafilimu azacile.
Kulolu cwaningo, ngokusekelwe ekumunceni kwe-plasmon resonance (LSPR) yendawo yendawo, imikhondo ye-acetylene (C2H2) Cu/Ni NP yafakwa endaweni yokushisa yegumbi ukuze isetshenziswe njengezinzwa zegesi ye-CO.I-Rutherford backscatter spectroscopy (RBS) yasetshenziselwa ukuhlaziya ukwakheka kanye nokumila kwemvelo okuvela ezithombeni ze-AFM, futhi amamephu we-topographic ye-3D acutshungulwa kusetshenziswa isofthiwe ye-MountainsMap® Premium ukuze kufundwe i-surface isotropy kanye nayo yonke imingcele ye-micromorphological eyengeziwe yama-microtextures angaphezulu.Ngakolunye uhlangothi, imiphumela emisha yesayensi iyaboniswa engasetshenziswa ezinqubweni zezimboni futhi inentshisekelo enkulu ekufakweni kwezicelo zokutholwa kwegesi yamakhemikhali (CO).Izincwadi zibika ngokokuqala ngqa ukuhlanganiswa, ukuhlukaniswa kwezinhlamvu kanye nokusetshenziswa kwale nanoparticle.
Ifilimu elincanyana le-Cu/Ni nanoparticles lilungiswe yi-RF sputtering kanye ne-RF-PECVD co-deposition ne-13.56 MHz power supply.Indlela isekelwe ku-reactor enama-electrode amabili ezinto ezihlukene nosayizi.Encane iyinsimbi njenge-electrode enamandla, futhi enkulu isekelwe ekamelweni lensimbi engagqwali ebangeni elingu-5 cm ukusuka kwelinye.Beka i-substrate ye-SiO 2 kanye nethagethi ye-Cu ekamelweni, bese ukhipha ikamelo liye ku-103 N/m 2 njengengcindezi yesisekelo ekamelweni lokushisa, faka igesi ye-acetylene ekamelweni, bese ucindezela ukucindezela okuzungezile.Kunezizathu ezimbili eziyinhloko zokusebenzisa igesi ye-acetylene kulesi sinyathelo: okokuqala, isebenza njengegesi elithwala ukukhiqizwa kwe-plasma, futhi okwesibili, ukulungiselela ama-nanoparticles ngamanani omkhondo wekhabhoni.Inqubo yokubeka yenziwe amaminithi angu-30 ekucindezelweni kwegesi kokuqala kanye namandla e-RF angu-3.5 N/m2 no-80 W, ngokulandelanayo.Bese wephula i-vacuum bese ushintsha ilitshe ku-Ni.Inqubo yokubeka iphindwe ngomfutho wegesi wokuqala kanye namandla e-RF angu-2.5 N/m2 no-150 W, ngokulandelanayo.Ekugcineni, ama-nanoparticles ethusi ne-nickel afakwe emkhathini we-acetylene enza ama-nanostructures ethusi/nickel.Bheka Ithebula 1 ukuze uthole amalungiselelo esampula nezihlonzi.
Izithombe ze-3D zamasampuli asanda kulungiselelwa zarekhodwa endaweni yokuskena yesikwele engu-1 μm × 1 μm kusetshenziswa isibonakhulu se-nanometer multimode atomic force (I-Digital Instruments, i-Santa Barbara, CA) kwimodi okungeyona yokuxhumana ngesivinini sokuskena esingu-10–20 μm/min. .Nge.Isofthiwe ye-MountainsMap® Premium isetshenziselwe ukucubungula amamephu ebalazwe e-3D AFM.Ngokusho kwe-ISO 25178-2: 2012 29,30,31, imingcele eminingana ye-morphological ibhaliwe futhi kuxoxwa ngayo, ubude, ingqikithi, ivolumu, umlingiswa, umsebenzi, isikhala kanye nenhlanganisela kuchazwa.
Ugqinsi nokwakheka kwamasampula asanda kulungiswa kwalinganiselwa kuhlelo lwe-MeV kusetshenziswa i-Rutherford backscattering spectroscopy (RBS) enamandla amakhulu.Endabeni yokuhlola igesi, i-spectroscopy ye-LSPR yasetshenziswa kusetshenziswa i-spectrometer ye-UV-Vis ebangeni le-wavelength ukusuka ku-350 kuya ku-850 nm, kuyilapho isampula elimele laliku-cuvette yensimbi engagqwali evaliwe enobubanzi obungu-5.2 cm nobude obungu-13.8 cm ekuhlanzekeni okungu-99.9 % izinga lokugeleza kwegesi ye-CO (ngokwezinga le-Arian Gas Co. IRSQ, 1.6 kuya ku-16 l/h imizuzwana engu-180 namasekhondi angu-600).Lesi sinyathelo senziwa ekamelweni lokushisa, umswakama we-ambient 19% kanye ne-fume hood.
I-Rutherford backscattering spectroscopy njengendlela yokusabalalisa i-ion izosetshenziswa ukuhlaziya ukwakheka kwamafilimu amancane.Le ndlela eyingqayizivele ivumela ukulinganisa ngaphandle kokusebenzisa indinganiso yereferensi.Ukuhlaziywa kwe-RBS kulinganisa amandla aphezulu (ama-He2+ ion, okungukuthi izinhlayiya ze-alpha) ngokulandelana kwe-MeV kusampula kanye nama-He2+ ions ahlakazeke emuva nge-engeli ethile.Ikhodi ye-SIMNRA iwusizo ekwenzeni imodeli yemigqa eqondile namajika, futhi ukuxhumana kwayo nombono we-RBS wokuhlola kubonisa ikhwalithi yamasampuli alungisiwe.I-spectrum ye-RBS yesampula ye-Cu/Ni NP iboniswa kuMfanekiso 1, lapho ulayini obomvu kuyi-spectrum ye-RBS yokuhlola, futhi umugqa ohlaza okwesibhakabhaka uwukulingisa kohlelo lwe-SIMNRA, kungabonakala ukuthi imigqa emibili ye-spectral ilungile. isivumelwano.I-beam yesigameko enamandla angu-1985 keV isetshenziswe ukuhlonza ama-elementi kusampula.Ugqinsi longqimba olungaphezulu lungaba ngu-40 1E15Atom/cm2 equkethe u-86% Ni, 0.10% O2, 0.02% C kanye no-0.02% Fe.I-Fe ihlotshaniswa nokungcola ku-Ni target ngesikhathi sokufafaza.Iziqongo ze-Cu ne-Ni ezingaphansi zibonakala ku-1500 keV, ngokulandelana, kanye neziqongo ze-C ne-O2 ku-426 keV kanye no-582 keV, ngokulandelana.Izinyathelo ze-Na, Si, kanye ne-Fe zingu-870 keV, 983 keV, 1340 keV, kanye no-1823 keV ngokulandelanayo.
Izithombe zesikwele se-3D ze-AFM zendawo yefilimu ye-Cu kanye ne-Cu/Ni NP ziboniswa kumakhiwane.2. Ngaphezu kwalokho, i-topography ye-2D evezwe emfanekisweni ngamunye ibonisa ukuthi ama-NP abonwa endaweni yefilimu ayahlangana abe yindilinga, futhi le morphology ifana naleyo echazwe u-Godselahi no-Armand32 kanye no-Armand et al.33.Kodwa-ke, ama-Cu NP ethu awazange ahlanganiswe, futhi isampula equkethe i-Cu kuphela ibonise indawo ebushelelezi kakhulu eneziqongo ezingcono kakhulu kunezinzima (Fig. 2a).Ngokuphambene, iziqongo ezivulekile kumasampula e-CuNi15 kanye ne-CuNi20 anomumo osobala oyindilinga nokuqina okuphezulu, njengoba kuboniswa isilinganiso sobude ku-Fig. 2a no-b.Ushintsho olubonakalayo ku-morphology yefilimu lubonisa ukuthi indawo engaphezulu inezakhiwo ezihlukene ze-topographical, ezithintwa isikhathi sokubeka i-nickel.
Izithombe ze-AFM ze-Cu (a), CuNi15 (b), kanye ne-CuNi20 (c) yamafilimu amancane.Amamephu afanelekile e-2D, ukusatshalaliswa kokuphakama kanye namajika e-Abbott Firestone ashumekwe esithombeni ngasinye.
Isilinganiso sikasayizi wokusanhlamvu wama-nanoparticles silinganiselwa ku-histogram yokusabalalisa ububanzi etholwe ngokulinganisa ama-nanoparticles angu-100 kusetshenziswa ukulingana kwe-Gaussian njengoba kuboniswe ku-FIG.Kungabonakala ukuthi i-Cu ne-CuNi15 inezilinganiso ezifanayo zobukhulu bokusanhlamvu (27.7 no-28.8 nm), kuyilapho i-CuNi20 inezinhlamvu ezincane (23.2 nm), eziseduze nenani elibikwe ngu-Godselahi et al.34 (cishe 24 nm).Kuzinhlelo ze-bimetallic, iziqongo ze-plasmon resonance yendawo yendawo zingashintsha ngoshintsho kusayizi wokusanhlamvu35.Mayelana nalokhu, singaphetha ngokuthi isikhathi eside sokubeka i-Ni sithinta izakhiwo ze-plasmonic zamafilimu amancane we-Cu / Ni wesistimu yethu.
Ukusatshalaliswa kosayizi wengxenye ye-(a) Cu, (b) CuNi15, kanye (c) ne-CuNi20 yamafilimu amancanyana atholwe ku-AFM topography.
I-Bulk morphology nayo idlala indima ebalulekile ekumisweni kwendawo yezakhiwo ze-topographic kumafilimu amancane.Ithebula 2 libala amapharamitha asuselwa kubude asuselwa kubude bendawo ahlotshaniswa nemephu ye-AFM, engachazwa ngamavelu esikhathi we-mean roughness (Sa), u-skewness (Ssk), kanye ne-kurtosis (Sku).Amanani e-Sa angu-1.12 (Cu), 3.17 (CuNi15) kanye no-5.34 nm (CuNi20), ngokulandelana, okuqinisekisa ukuthi amafilimu aba nzima kakhulu ngokukhula kwesikhathi sokufakwa kwe-Ni.Lawa manani aqhathaniswa nalawo abikwe ngaphambilini ngu-Arman et al.33 (1–4 nm), Godselahi et al.34 (1–1.05 nm) kanye noZelu et al.36 (1.91–6.32 nm ), lapho okufanayo i-sputtering yenziwa kusetshenziswa lezi zindlela ukufaka amafilimu e-Cu/Ni NPs.Kodwa-ke, u-Ghosh et al.37 bafake ama-multilayers e-Cu/Ni nge-electrodeposition futhi babike amanani aphezulu okurhabaxa, ngokusobala kububanzi obungu-13.8 kuya ku-36 nm.Kumele kuqashelwe ukuthi umehluko ku-kinetics yokwakheka kwendawo ngezindlela ezahlukene zokubeka kungaholela ekwakhekeni kwezindawo ezinamaphethini ahlukene wendawo.Noma kunjalo, kungase kubonakale ukuthi indlela ye-RF-PECVD iyasebenza ekutholeni amafilimu e-Cu/Ni NPs anoburhalarhume obungekho ngaphezu kuka-6.32 nm.
Mayelana nephrofayili yobude, izikhathi zezibalo ze-Ssk ne-Sku zihlobene ne-asymmetry kanye nokujwayelekile kokusabalalisa kobude, ngokulandelanayo.Wonke amanani e-Ssk alungile (i-Ssk > 0), ekhombisa umsila ongakwesokudla38 omude, ongaqinisekiswa yisakhiwo sokusabalalisa ukuphakama ku-inset 2. Ngaphezu kwalokho, wonke amaphrofayili obude ayebuswe isiqongo esicijile esingu-39 (Sku > 3) , okubonisa ukuthi ijika Ukusatshalaliswa kobude kuphansi kancane kunejika lensimbi ye-Gaussian.Ulayini obomvu esakhiweni sokusabalalisa ukuphakama yijika le-Abbott-Firestone 40, indlela efanelekile yezibalo yokuhlola ukusatshalaliswa okuvamile kwedatha.Lo mugqa utholakala enanini eliqongelelwe ngaphezu kwe-histogram yobude, lapho inani eliphakeme kakhulu kanye nomkhombe ojulile uhlobene nobuncane bawo (0%) namanani aphezulu (100%).Lawa majika e-Abbott-Firestone anomumo oshelelayo we-S ku-axis ka-y futhi kuzo zonke izimo abonisa ukukhula okuqhubekayo kuphesenti lezinto eziwela phezu kwendawo emboziwe, kusukela ekuphakameni okuqinile nokuqine kakhulu.Lokhu kuqinisekisa ukwakheka kwendawo kwendawo, okuthinteka kakhulu isikhathi sokubeka i-nickel.
Ithebula lesi-3 libala amapharamitha athile e-ISO morphology ahlotshaniswa nendawo ngayinye etholwe ezithombeni ze-AFM.Kwaziwa kahle ukuthi isilinganiso sendawo nesezinto ezibonakalayo (Smr) kanye nendawo yokubala nesilinganiso sezinto ezibonakalayo (Smc) ziyimingcele yokusebenza kwendawo29.Isibonelo, imiphumela yethu ibonisa ukuthi isifunda esingenhla kwendiza ephakathi nendawo siphezulu kakhulu kuwo wonke amafilimu (Smr = 100%).Kodwa-ke, amanani e-Smr atholakala ezindaweni eziphakeme ezihlukene ze-coefficient yendawo ethwalayo ye-terrain41, njengoba ipharamitha i-Smc yaziwa.Ukuziphatha kwe-Smc kuchazwa ukwenyuka kokuqina okuvela ku-Cu → CuNi20, lapho kungabonakala khona ukuthi inani eliphakeme kakhulu elitholwe ku-CuNi20 linikeza i-Smc ~ 13 nm, kuyilapho inani le-Cu licishe libe ngu-8 nm.
Imingcele yokuhlanganisa i-RMS gradient (Sdq) kanye nesilinganiso sendawo esibonakalayo esithuthukisiwe (Sdr) amapharamitha ahlobene nobucaba nobunkimbinkimbi.Kusukela ku-Cu → CuNi20, amanani e-Sdq asukela ku-7 kuye ku-21, okubonisa ukuthi ukungahambi kahle kwe-topographic kumafilimu kuyanda lapho ungqimba lwe-Ni lufakwa imizuzu engama-20.Kumele kuqashelwe ukuthi ubuso be-CuNi20 abuyona into eyisicaba njengaleyo ye-Cu.Ngaphezu kwalokho, kutholwe ukuthi inani lepharamitha Sdr, elihlotshaniswa nobunzima be-surface microtexture, likhuphuka lisuka ku-Cu → CuNi20.Ngokusho kocwaningo luka-Kamble et al.42, ubunzima be-surface microtexture buyanda ngokukhula kwe-Sdr, okubonisa ukuthi i-CuNi20 (Sdr = 945%) ine-microstructure engaphezulu eyinkimbinkimbi uma kuqhathaniswa namafilimu e-Cu (Sdr = 229%)..Eqinisweni, uguquko kunkimbinkimbi ye-microscopic yokuthungwa kudlala indima ebalulekile ekusabalaliseni nasekumeni kweziqongo ezimaholoholo, ezingabonwa kusukela kumapharamitha wesici we-peak density (Spd) kanye ne-arithmetic mean peak curvature (Spc).Mayelana nalokhu, i-Spd ikhuphuka isuka ku-Cu → CuNi20, okubonisa ukuthi iziqongo zihleleke ngokuminyene ngokukhula kogqinsi lwe-Ni.Ngaphezu kwalokho, i-Spc iphinde yenyuka isuka ku-Cu→CuNi20, okubonisa ukuthi ukwakheka okuphezulu kobuso besampula ye-Cu kuyindilinga kakhudlwana (Spc = 612), kuyilapho eye-CuNi20 ibukhali (Spc = 925).
Iphrofayili enzima yefilimu ngayinye iphinde ibonise amaphethini ezindawo ahlukene ezindaweni eziphakeme, eziwumgogodla, kanye nezindawo zomkhombe ezingaphezulu.Ukuphakama kwenkango (Sk), ukwehla kwenani eliphakeme (Spk) (ngenhla komgogodla), kanye nomkhombe (i-Svk) (ngezansi kwenkango)31,43 amapharamitha akalwa ngokuhambisana nendawo engaphezulu30 futhi anda esuka ku-Cu → CuNi20 ngenxa ubuhwaqane obungaphezulu Ukwanda okuphawulekayo .Ngokufanayo, i-peak material (Vmp), core material (Vmc), trough void (Vvv), kanye ne-core void volume (Vvc)31 ibonisa inkambiso efanayo njengoba wonke amanani enyuka esuka ku-Cu → CuNi20.Lokhu kuziphatha kubonisa ukuthi i-CuNi20 surface ingabamba uketshezi oluningi kunamanye amasampula, okuhle, okuphakamisa ukuthi le ndawo kulula ukuyigcoba44.Ngakho-ke, kufanele kuqashelwe ukuthi njengoba ukushuba kongqimba lwe-nickel kukhula kusuka ku-CuNi15 → CuNi20, izinguquko kuphrofayela ye-topographic zisalela ngemuva kwezinguquko zemingcele ye-morphological ephakeme, ezithinta i-microtexture engaphezulu kanye nephethini yendawo yefilimu.
Ukuhlolwa kwekhwalithi kokuthungwa okuncane kwendawo yefilimu kutholwe ngokwakha imephu yendawo ye-AFM kusetshenziswa isofthiwe yezohwebo ye-MountainsMap45.Ukunikezwa kuboniswa kuMfanekiso 4, obonisa umsele omele nendawo ezungezile ngokuphathelene nomhlaba.Ithebula lesi-4 libala indawo kanye nezinketho zesikhala.Izithombe zama-grooves zibonisa ukuthi isampula ibuswa isistimu efanayo yamashaneli ane-homogeneity ephinyiselwe yemisele.Nokho, imingcele yakho kokubili ukujula okukhulu kwe-groove (MDF) nokujula kwe-groove okumaphakathi (MDEF) kuyakhuphuka ukusuka ku-Cu kuya ku-CuNi20, okuqinisekisa ukuqaphela kwangaphambilini mayelana namandla okuthambisa kwe-CuNi20.Kumele kuqashelwe ukuthi amasampula e-Cu (Fig. 4a) kanye ne-CuNi15 (Fig. 4b) anezilinganiso ezifanayo zombala, okubonisa ukuthi i-microtexture yendawo yefilimu ye-Cu ayizange ibe nezinguquko eziphawulekayo ngemva kokuba ifilimu ye-Ni ifakwe ku-15. imiz.Ngokuphambene, isampula ye-CuNi20 (Fig. 4c) ibonisa imibimbi enezilinganiso ezihlukene zemibala, ehlobene namanani ayo aphezulu e-MDF kanye ne-MDEF.
Ama-grooves kanye ne-surface isotropy ye-microtextures yamafilimu e-Cu (a), CuNi15 (b), kanye ne-CuNi20 (c) yamafilimu.
Umdwebo we-polar kufig.4 futhi ikhombisa ukuthi i-surface microtexture ihlukile.Kuyaphawuleka ukuthi ukubekwa kongqimba lwe-Ni kushintsha kakhulu iphethini yendawo.I-microtextural isotropy ebaliwe yamasampula yayingu-48% (Cu), 80% (CuNi15), kanye nama-81% (CuNi20).Kungabonakala ukuthi ukufakwa kwe-Ni layer kunomthelela ekwakhekeni kwe-isotropic microtexture eyengeziwe, kuyilapho ifilimu eyodwa ye-Cu ine-anisotropic surface microtexture.Ukwengeza, amafrikhwensi wendawo avelele we-CuNi15 kanye ne-CuNi20 aphansi ngenxa yobude bazo obukhulu bokuzenzela (Sal)44 uma kuqhathaniswa namasampula e-Cu.Lokhu kuphinde kuhlanganiswe nokuma kwezinhlamvu okufanayo okuvezwe yilawa masampuli (Std = 2.5° kanye ne-Std = 3.5°), kuyilapho inani elikhulu kakhulu labhalwa kusampula ye-Cu (Std = 121°).Ngokusekelwe kule miphumela, wonke amafilimu abonisa ukuhlukahluka kwezindawo zebanga elide ngenxa yokuhlukahluka kwe-morphology, amaphrofayili e-topographic, kanye nobulukhuni.Ngakho-ke, le miphumela ibonisa ukuthi isikhathi sokubeka ungqimba lwe-Ni sidlala indima ebalulekile ekubunjweni kwezindawo ze-CuNi bimetallic sputtered.
Ukutadisha ukuziphatha kwe-LSPR kwe-Cu/Ni NPs emoyeni ekamelweni lokushisa kanye nokushintshashintsha kwegesi ye-CO ehlukene, isibuko sokumuncwa kwe-UV-Vis sisetshenziswe ebangeni lamaza angama-350–800 nm, njengoba kukhonjisiwe kuMfanekiso 5 we-CuNi15 kanye ne-CuNi20.Ngokwethula ukuminyana okuhlukile kokugeleza kwegesi ye-CO, isiqongo esisebenzayo se-LSPR CuNi15 sizoba banzi, ukumuncwa kuzoba namandla, futhi inani eliphakeme lizoshintsha (redshift) liye kuma-wavelengths aphezulu, lisuka ku-597.5 nm ekugelezeni komoya liye ku-16 L/h 606.0 nm.I-CO igeleza imizuzwana engu-180, i-606.5 nm, i-CO flow 16 l/h imizuzwana engu-600.Ngakolunye uhlangothi, i-CuNi20 ikhombisa ukuziphatha okuhlukile, ngakho-ke ukwanda kokugeleza kwegesi ye-CO kubangela ukwehla kwe-LSPR peak wavelength position (blueshift) isuka ku-600.0 nm ekugelezeni komoya iye ku-589.5 nm ku-16 l/h CO flow for 180 s. .16 l/h ukugeleza kwe-CO imizuzwana engu-600 ku-589.1 nm.Njengase-CuNi15, singabona ukuphakama okubanzi nokwanda kokuqina kokumunca kwe-CuNi20.Kungalinganiselwa ukuthi ngokukhula kobukhulu be-Ni layer ku-Cu, kanye nokwanda kosayizi kanye nenani le-CuNi20 nanoparticles esikhundleni se-CuNi15, i-Cu ne-Ni izinhlayiya zisondelana, ukuphakama kwama-oscillations kagesi kuyanda. , futhi, ngenxa yalokho, imvamisa iyanda.okusho ukuthi: ubude begagasi buyancipha, ukushintsha okuluhlaza okwesibhakabhaka kwenzeka.
Isikhathi sokuthumela: Aug-16-2023