Abstract
Abstract A facile novel green methodology is presented for the synthesis of highly stable and well-dispersed copper oxide nanoparticles using aqueous wheat seed extract. Under optimal reaction conditions, the wheat seed extract-derived electron-rich biomolecules were functioned as a reducing and capping/ stabilizing agent. The ultraviolet-visible absorption peak at 300 nm was confirmed the formation of copper oxide nanoparticles. Fourier-transform infrared spectroscopy analysis determined Cu–O bonds in nanosample, indicating the active role of functional groups in the wheat seed extract in bio-reduction of Cu cations. X-ray diffraction pattern results demonstrated the monoclinic structure of highly pure biosynthesized copper oxide nanoparticles with a crystallite size of 20.76 nm. The stability of copper oxide nanoparticles was confirmed after 3 months’ storage of product with no sedimentation or suspension. Transmission electron microscopy results showed the spherical shape of nano-particle with an average size of 22 ± 1.5 nm. X-ray photo-electron spectroscopy analyses revealed only copper and oxygen elements in the sample, confirming the purity of copper oxide nanoparticles. Bio-assisted copper oxide nanoparticles demonstrated significant catalytic efficiency and reusability toward 4-nitrophenol removal by an average of 97.6% from aqueous solutions after successive 5 days’ exposure to UV irradiation.
Highlights
(wagging) bands, respectively (Figure 2b) [47]. These results indicate an electrostatic interaction between electron-rich amino, ketonic C=O and alcoholic OH groups present in wheat seed extract and Cu ions which in turn leads to biosynthesize of CuO NPs [2]
Copper oxide nanoparticles were obtained under optimal reaction conditions of neutral pH and short time of 25 min at a temperature of 70°C
All standard techniques including UV-vis, Fourier-transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), scanning electron microscope (SEM), and transmission electron microscope (TEM) confirmed the formation of well dispersed CuO nanoparticle
Summary
In the X-ray dwifhferaacttsioepLeneadtpieraFxAtttred,areAcnnt∗roienotsefbudialotisa- geol1ndaalIinnzdatbrleloet dFV-uldicneetnaioortemnaapvseoctnorVs,peaacceh over F with of which acts nite positive dim on an eigenbasis demonstrated the monoclinic structure oifrhreigdhulcyipbuleretrbiidoi-agonal fashion. Such a pair is called a Leonard pair Transamteisdsiwonithelaenctirrorneduicnibdleemmaonddualendfowr tihdeelTyearwppillliiegderaarelgaefborramoifstcheellhanypeoeurcsube (see [4, Co microscopy results showed the sphericaLlesohnaapredopfaniarnoof-Kraawptpclhicoautikontyspien(rseecee[n1t0y, eDaers.nPitrieosnen6.t1ly]),;a(iicio)nthsiedLeeraobnlaerd pair associa peolxaeyrctgtierconlenewslepitmehcetanrnotssacivoneprtyahgeaensasailmzyespeolsef,r2ec2voe±naf1lie.r5mdmbnionrmonagdl.y(tXushc-eleroeeappfy[pou1per,rrhitTthoyahtneooedTf-oererwnppmraui]elrm,lstii[egbc3neel,etrrTesadholwgeftioeotpbrhefhramadybsiosrfiiffcc4eaaa.rl1etd,enia5sttn.th5sda]ehn);accvp(heaiev-rerim)oeaaugnicnusdalatlasyprippzpgeerrros.oacDppoerfhedisuantprhtaieenatsleytoshtwnchaoeaesrlrieemra sapliiznemd otodteallliyn copper oxide nanoparticles. Bio-assist(esdeeco[1p1p,eLremoxmidae 14.p8o]p);u(lva)ritthy,e Ltheoeynaradrepahirigchoncsoissttinagnodf aonftyentwocoonftaaimn odular Leonar nanoparticles demonstrated significantDecatnailtyitoicn e1.f4fi]c)i;- (vit)otxhice Lmeoatneariradlspa(ier.gc.onssoislvtienngt,ofthaeparierdoufcionpgpoasgietentg,enerators for t ency and reusability toward 4-nitrophenborlar,eamcotvinagl boynaann eavcailduaatniodnbmasoedruelaeg(esnetes)[5w, Phricohpopsoitteionntia9.l2ly]).exTphoeseextahme ple (i) is a spec average of 97.6% from aqueous solutionesxaaftmerpsluecsc(eisiis)i,ve(iv)eanrveisropnemcieanl tctaosesseroiofu(vs)h. Bio-assist(esdeeco[1p1p,eLremoxmidae 14.p8o]p);u(lva)ritthy,e Ltheoeynaradrepahirigchoncsoissttinagnodf aonftyentwocoonftaaimn odular Leonar nanoparticles demonstrated significantDecatnailtyitoicn e1.f4fi]c)i;- (vit)otxhice Lmeoatneariradlspa(ier.gc.onssoislvtienngt,ofthaeparierdoufcionpgpoasgietentg,enerators for t ency and reusability toward 4-nitrophenborlar,eamcotvinagl boynaann eavcailduaatniodnbmasoedruelaeg(esnetes)[5w, Phricohpopsoitteionntia9.l2ly]).exTphoeseextahme ple (i) is a spec average of 97.6% from aqueous solutionesxaaftmerpsluecsc(eisiis)i,ve(iv)eanrveisropnemcieanl tctaosesseroiofu(vs)h. ealth hazards; so that restricts
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
