Zn doped CdO nanoparticles: Structural, morphological, optical, photocatalytic and anti-bacterial properties

Gupta, Vinod Kumar; Fakhri, Ali; Tahami, Shiva; Agarwal, Shilpi

doi:10.1016/j.jcis.2017.05.026

Cited by 75 publications

(8 citation statements)

References 33 publications

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“…Studies have shown that doping Zn to nanoparticles can show better antibacterial activity against E. coli (G − ) and S. aureus (G + ) than original materials. 35 However, Zn-MCSNs showed no obvious antibiofilm activity in this study. On the contrary, Zn-MCSNs showed an enrichment effect on E. faecalis and seem to encourage E. faecalis to form biofilms.…”

Section: Discussioncontrasting

confidence: 54%

<p>The Antibiofilm Activity and Mechanism of Nanosilver- and Nanozinc-Incorporated Mesoporous Calcium-Silicate Nanoparticles</p>

Leng¹,

Li²,

Zhu³

et al. 2020

IJN

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Background: Mesoporous calcium-silicate nanoparticles (MCSNs) have good prospects in the medical field due to their great physicochemical characteristics, antibacterial activity and drug delivery capacity. This study was to analyze the antibiofilm activity and mechanisms of silver (Ag) and zinc (Zn) incorporated MCSNs (Ag/Zn-MCSNs) with different percentages of Ag and Zn. Methods: Ag/Zn(1:9, molar ratio)-MCSNs and Ag/Zn(9:1, molar ratio)-MCSNs were prepared and characterized. Endocytosis of nanoparticles by Enterococcus faecalis (E. faecalis) treated with Ag/Zn-MCSNs was observed using TEM to explore the antibacterial mechanisms. The antibiofilm activity of Ag/Zn-MCSNs with different ratios of Ag and Zn was tested by E. faecalis biofilm model in human roots. The human roots pretreated by different Ag/Zn-MCSNs were cultured with E. faecalis. Then, SEM and CLSM were used to observe the survival of E. faecalis on the root canal wall. Cytotoxicity of the nanoparticles was tested by CCK8 kits. Results: The Ag/Zn-MCSNs release Ag + and destroy the cell membranes to kill bacteria. The MCSNs containing Ag showed antibacterial activity against E. faecalis biofilms in different degrees, and they can adhere to dentin surfaces to get a continuous antibacterial effect. However, MTA, MCSNs and Zn-MCSNs could not disrupt the bacterial biofilms obviously. MCSNs, Ag/Zn(1:1, molar ratio)-MCSNs and Ag/Zn(1:9)-MCSNs showed no obvious cytotoxicity, while Ag-MCSNs and Ag/Zn(9:1)-MCSNs showed cytotoxicity. Zn-MCSNs can slightly promote cell proliferation. Conclusion: Ag/Zn-MCSNs have good antibiofilm activity. They might achieve an appropriate balance between the antibacterial activity and cytotoxicity by adjusting the ratio of Ag and Zn. Ag/Zn-MCSNs are expected to be a new type of root canal disinfectant or sealer for root canal treatment.

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Section: Discussioncontrasting

confidence: 54%

<p>The Antibiofilm Activity and Mechanism of Nanosilver- and Nanozinc-Incorporated Mesoporous Calcium-Silicate Nanoparticles</p>

Leng¹,

Li²,

Zhu³

et al. 2020

IJN

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“…Cadmium oxide is a pretty toxic by inhalation, oral, and dermal materials but we use it giving to its various applications and different features. Thin films deposition methods have been reported to doped undoped, doped, and co-loaded CdO thin films containing chemical bath coating [2] [3], vacuum evaporation [4,5], successive ionic layers adsorption, and reaction technique [6], sol gel technique [7], magnetron sputter [8], organic chemical vapor deposition system [9], chemical spray pyrolysis [10] and pulsed laser deposition, [11], Doping of CdO thin films including several materials for example Al [1,12], F [13], In [14], Sn [15,16], Pt [17], Uranium [18], Ga [19], Pb [20], Mn [21], Co [22], Zn [23], and yttrium(Y) [24]. have already been studied.…”

Section: Introductionmentioning

confidence: 99%

Effect of copper on physical properties of CdO thin films and n-CdO: Cu / p-Si heterojunction

Hussein¹,

Hassun²,

Maiyaly³

et al. 2022

JOR

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Transition metal Copper doped Cadmium oxide and (Cu: CdO and n-CdO: Cu / p-Si) thin films were prepared onto glass and p-type single crystal (111) Si substrates at temperature 300 K by thermal evaporation technique with thickness (400±30) nm. The effects of different Cu ratios on the CdO thin films and heterojunction of n-CdO / p-Si.. The X-ray diffraction analysis approves the CdO films are polycrystalline and cubic structure with lattice parameter of 0.4689 nm. The optical transmittance exhibits excellent optical absorption for 6% Cu doping. Decreased of optical band gap from 2.1 to 1.8 eV. Hall measurement approves that CdO material n type with a maximum carrier mobility of 144.6 (cm2 /Vs) with resistivity of 0.107991 (Ω.cm) were achieved for 6% Copper (Cu) doping. The I-V characteristics of heterojunction prepared under illumination was carried out by(100 mW/cm2) incident power density at different Cu doping.

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“…Saf CdO' da 33.06 ο , 38.36 ο , 55.36 ο , 65.99 ο ve 69.30 ο , 2θ derecelerine karşılık gelen yüksek pikler sırasıyla (111), ( 200), ( 220), (311) ve (222) düzlemlerine karşılık gelmektedir. Bu pikler saf CdO' nun karakteristik pikleridir [2,5,13]. La katkılı nanoparçacıkların tepe pozisyonları ve yoğunlukları, La katkılama oranına göre farklılık göstermekle beraber yine JCPDS no.78-0653 ile mükemmel şekilde eşleşmektedir.…”

Section: Yapısal öZelliklerunclassified

“…Bu yarı iletken metal oksit nanoparçacıkları arasında CdO kafes noktalarında yer alan Cd ve O atomları ile NaCl kristal yapısına sahip önemli bir n-tipi yarı iletkenlerdendir. CdO diğer metal oksit yarı iletkenlere göre düşük maliyeti, kimyasal kararlılığı, geniş bant aralığı, düşük elektrik direnci ve görünür bölgede yüksek iletimi gibi üstün özelliklerinden dolayı oldukça ilgi çekicidir [4][5][6].…”

Section: Introductionunclassified

Sol-Jel Yöntemi ile Sentezlenen La katkılı CdO Nanoparçacıkların, Yapısal Karakterizasyonu ve Dielektriksel Özelliklerinin Belirlenmesi

GÜRGENÇ

Di̇ki̇ci̇

Biryan

et al. 2022

Fırat Üniversitesi Mühendislik Bilimleri Dergisi

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Öz: Bu çalışmada, saf ve nadir toprak elementlerinden olan Lantan (La) katkılı kadmiyum oksit (CdO) nanoparçacıkları soljel yöntemi ile sentezlendi. Katkılama farklı mol yüzdelerinde (1%, 3%, 5% ve 7%) gerçekleştirildi. Sentezlenen nanoparçacıklar FE-SEM, EDX, XRD ve FT-IR analizleri ile karakterize edildi. Farklı oranlardaki La katkılı CdO nanoparçacıkların dielektrik sabiti, dielektrik kayıp faktörü ve ac iletkenlik değerleri oda sıcaklığında frekansın bir fonksiyonu olarak empedans analizör cihazı ile belirlendi. La katkılı nanoparçacıklar sol-jel yöntemi ile başarılı bir şekilde sentezlenmiştir. Sentezlenen nanoparçacıklar küre benzeri formdadır ve La katkılı nanoparçacıkların boyutları saf CdO' ya göre daha yüksektir. Frekansın artması ile birlikte dielektrik özelliklerinde azalma olmuş ve daha yüksek frekanslarda sabit bir değere yaklaşmıştır. 1% La katkısı ile 6.87 olan dielektrik sabiti 7% La katkısı ile 28.15'e yükselmiştir. Dielektrik kayıp değerleri La katkısı ile azalma göstermiştir. 1% La katkısı ile 9.799x10 -5 S/cm olan iletkenlik değeri 7% La katkısı ile 6.110 x10 -7 S/cm olarak ölçülmüştür.

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Zn doped CdO nanoparticles: Structural, morphological, optical, photocatalytic and anti-bacterial properties

Cited by 75 publications

References 33 publications

<p>The Antibiofilm Activity and Mechanism of Nanosilver- and Nanozinc-Incorporated Mesoporous Calcium-Silicate Nanoparticles</p>

<p>The Antibiofilm Activity and Mechanism of Nanosilver- and Nanozinc-Incorporated Mesoporous Calcium-Silicate Nanoparticles</p>

Effect of copper on physical properties of CdO thin films and n-CdO: Cu / p-Si heterojunction

Sol-Jel Yöntemi ile Sentezlenen La katkılı CdO Nanoparçacıkların, Yapısal Karakterizasyonu ve Dielektriksel Özelliklerinin Belirlenmesi

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