Size Controllable Synthesis and Characterization of CuO Nanostructure

Candemir, Duygu; Boran, Filiz

doi:10.4028/www.scientific.net/msf.915.98

Cited by 3 publications

(8 citation statements)

References 10 publications

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“…Sentezlenen örneklerin elektriksel iletkenliği, elde edilen numune peletinin, oda sıcaklığında bir Thurlby elektrometresi ile standart iki nokta prob (two point probe) tekniği kullanılarak kapalı test odasına tabi tutulmasıyla ölçüldü. Elde edilen toz ürünlerin peletleri, 3 dakika boyunca 10 t basınçta vakumlu pres altında tutularak hazırlandı [14][15][16]. Düzlem içi elektriksel iletkenlik aşağıdaki formülle hesaplandı:…”

Section: Materyal Ve Metotunclassified

Modifiye MWCNT/CuO Nanokompozitlerinin Optik Özellikleri ve Elektriksel İletkenlikleri Üzerine Non-iyonik Sürfektanın Etkisi

Boran¹

2021

European Journal of Science and Technology

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ÖzÖnceden sentezlenen CuO nanoparçacıklarının ve MWCNT/CuO nanokompozitlerinin yapısal ve optik özellikleri üzerine farklı türev (polietilen glikol metil eter metakrilat) (PEGMEMA) ve moleküler ağırlıklara (Mw: 200, 2000 ve 5000) sahip polietilen glikol (PEG) noniyonik sürfektan kullanılmasının etkisi, X-ışını kırınımı (XRD), Enerji Dağılım X-Işınları analizi (EDS) ve UV-vis spektrofotometre ile kapsamlı bir şekilde araştırıldı. Bu örneklerin elektriksel iletkenlikleri iki nokta prob tekniği kullanılarak ölçüldü. Örneklerin X-ışını kırınım spektroskopisi verilerinden CuO nanoparçacıklarının ve MWCNT/CuO nanokompozitlerinin sırasıyla %36,7-44,6 ve %19,9-20,7 kristaliniteye sahip oldukları belirlendi. UV-vis spektrofotometre ölçümleri, non iyonik sürfektan kullanılması ile CuO nanoparçacıklarının ve MWCNT/CuO nanokompozitlerinin sırasıyla 4,24-4,31 eV ve 4,24-4,35 eV aralıklarında yüksek enerji bant aralıklarına sahip olduklarını göstermektedir. PEGMEMA kullanılması ile CuO nanoparçacıklarının ve MWCNT/CuO nanokompozitlerinin elektriksel iletkenlik değerleri sırasıyla 3,75 x10 -5 'den 7,93 x10 -5 S/cm'e ve 55,75'den 86,25 S/cm'e arttırılarak önemli ölçüde iyileştirildiği söylenebilir.

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Section: Materyal Ve Metotunclassified

Modifiye MWCNT/CuO Nanokompozitlerinin Optik Özellikleri ve Elektriksel İletkenlikleri Üzerine Non-iyonik Sürfektanın Etkisi

Boran¹

2021

European Journal of Science and Technology

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“…CuO nanoparticles were prepared from CuCl2, using the identical procedure defined in our previous publication. The size and morphology of CuO nanoparticles were determined as 5.18 nm flower-like nanostructure in our previous study [11]. Finally, the CuO sample was subjected to freeze-drying processes for 14 h at -45°C.…”

Section: Preparation Of M-cuo Nanoparticlesmentioning

confidence: 99%

“…The x-ray diffraction pattern of m-CuO is presented in Fig. 2 [11,15]. In addition, the mean particle size of CuO nanoparticles was determined as 3.51 nm according to XRD analysis results (Table 1).…”

Section: Xrd Analysis Of M-cuo Nanoparticlesmentioning

confidence: 99%

“…XRD analysis of the synthesized m-CuO nanoparticles was performed at a scanning speed of 2°/min using a Rigaku DMAX IIIC model X-ray diffractometer (35 kW, 15 mA, CuKα, 1.541871 A°). XRD analysis was used to calculate the mean crystallite grain size of m-CuO nanoparticles which were used as ready in the study and determined as 5.18 nm particle size by SEM analysis in our previous study [11]. The mean m-CuO crystallite size was calculated from the Scherrer equation (Eq.…”

Section: Characterizationmentioning

confidence: 99%

“…2 020), ( 202), (-113), (-311), ( 220), ( 311) and (004) reflection planes of CuO according to JCPDS 97-009-2367, respectively. The XRD spectrum of m-CuO shows that the synthesized m-CuO is in a monoclinic phase without observable impurity peaks [11,15]. In addition, the mean particle size of CuO nanoparticles was determined as 3.51 nm according to XRD analysis results (Table 1).…”

Section: Xrd Analysis Of M-cuo Nanoparticlesmentioning

confidence: 99%

See 2 more Smart Citations

Polyvinyl alcohol/CuO nanocomposite hydrogels: facile synthesis and long-term stability

Boran¹,

Karakaya²

2019

Balıkesir Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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Within this study, Polyvinyl alcohol/CuO nanocomposite hydrogels were synthesized through dispersing CuO nanoparticles in a PVA solution, using the freeze-thawing procedure in order for physically crosslinking. The average particle size of CuO nanoparticles which was added to the hydrogel was determined as 3.51 nm according to the XRD analysis after the ball milling process. The presence of CuO nanoparticles in nanocomposite hydrogels was determined by UV-vis spectroscopy, FESEM, EDS, and FTIR analysis. Also, the rheological properties of neat hydrogel and PVA/CuO nanocomposite hydrogels were examined. The addition of CuO nanoparticles to the polymer structure develops rheological features of PVA hydrogels. The Effect of CuO content of nanocomposite hydrogels on the swelling behavior and long term stability was investigated. These nanocomposite hydrogels demonstrated unique properties for biomedical applications due to their high swellability at pH 2.1 as the pH values of the stomach and long term stability. According to these results, the addition of CuO to the hydrogel structure improved the swelling characteristics of neat PVA hydrogel.

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Preparation of CuO Nanoparticles Film on Cu Substrate by Air Cold Plasma and Its Photoelectrochemical Properties

Zhang

Hou

2022

ACS Appl. Energy Mater.

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CuO nanostructures are optoelectronic materials that are responsive to a wide range of visible light, and they are widely used as photoelectrodes for sunlight-based photoelectrochemical (PEC) applications. We herein introduce a green, efficient plasma-based method for preparing a CuO nanoparticle film with excellent performance in PEC water splitting. The cold plasma was generated on copper foil by dielectric barrier discharge in ambient air. Through the 30 s discharge, an aqueous film was formed on the Cu surface, which had acted as the medium facilitating the reactions between the Cu and the active species from the plasma. The aqueous film was then crystallized into a Cu4(NO3)2(OH)6 nanosheet layer during drying. Finally, a CuO film with a thickness of 360 nm composed of CuO nanoparticles with sizes of 50–100 nm was obtained by calcining the Cu4(NO3)2(OH)6 at 270 °C. Under AM 1.5 G 100 mW cm–2 illumination, the CuO film exhibited a high photocurrent density of −1.2 mA cm–2 at 0.35 V (vs RHE), comparable with the CuO nanostructures on Cu substrate by other methods. The prolonged discharge (240 s) resulted in a thicker film (950 nm), which showed a lower photocurrent density because of the increased charge-transfer resistance. This method for CuO nanoparticles does not need any chemicals and possesses the advantages of low cost and high efficiency. Furthermore, using flexible and conductive Cu as the substrate makes it a competitive technique for fabricating CuO-based photoelectrodes. By adopting a suitable photocorrosion-protection scheme, the CuO film can hopefully be used for PEC hydrogen generation and other photocatalytic applications.

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Size Controllable Synthesis and Characterization of CuO Nanostructure

Cited by 3 publications

References 10 publications

Modifiye MWCNT/CuO Nanokompozitlerinin Optik Özellikleri ve Elektriksel İletkenlikleri Üzerine Non-iyonik Sürfektanın Etkisi

Modifiye MWCNT/CuO Nanokompozitlerinin Optik Özellikleri ve Elektriksel İletkenlikleri Üzerine Non-iyonik Sürfektanın Etkisi

Polyvinyl alcohol/CuO nanocomposite hydrogels: facile synthesis and long-term stability

Preparation of CuO Nanoparticles Film on Cu Substrate by Air Cold Plasma and Its Photoelectrochemical Properties

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