Ag-doped ZnO hydrogen sensor grown by the USP method

Sağlam, Hilal Kübra; Sarıtaş, Sevda; İskenderoğlu, Demet; Güney, Harun; Ertuğrul, Mehmet

doi:10.1016/j.optmat.2022.112903

Cited by 3 publications

(18 citation statements)

References 20 publications

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“…ZnO had a uniform nanorod shape, while the surface of Ag-ZnO contained some small nanoparticles loading onto the nanorods of ZnO. The result from SEM analysis confirmed that the silver nanoparticles were loaded over ZnO [13,21,25].…”

Section: Photocatalysts Propertiesmentioning

confidence: 75%

“…The diffraction peak of ZnO displayed with high crystalline of ZnO with 2θ was found at 31.2, 32.9, 34.5, 46.1, 54.8, 61.9, and 70.1 • [10,11,15,18,20]. It can be seen that after loading Ag nanoparticles, the XRD peaks intensity if ZnO were reduced and a new peak at 2θ = 40.8 • appeared, demonstrating that Ag was loaded onto ZnO [13,16,22]. The intensity of the main peaks which belonged to ZnO was decreased by the doping of Ag due to the reduction in crystallinity by the defects that were derived during the modification process.…”

Section: Photocatalysts Propertiesmentioning

confidence: 89%

“…The conversion of CO 2 using catalysts or photocatalysts has been rapidly growing, especially since the conversion of CO 2 into valuable chemicals or fuels attracted scientists from around the world. Photocatalytic conversion of carbon dioxide brings more advantages by utilizing natural solar light and reusing catalysts for a long time [13][14][15]. It could help to reduce to operation cost of the CO 2 conversion process and decrease the negative effect of greenhouse gas emissions [3,6,16].…”

Section: Introductionmentioning

confidence: 99%

“…The hetero-structuralized ZnO is the highest method used for CO 2 reduction at 36%, followed by defect-engineered ZnO (32%), plasmonic metal-loaded ZnO (18%), and 14% assigned to the doped ZnO. Therefore, the development method for doping ZnO is interesting to extend the application of ZnO-based photocatalyst for the conversion of carbon dioxide [11,13,15,18,20,21].…”

Section: Introductionmentioning

confidence: 99%

“…Silver is one of the cheapest, most stable, and non-toxic of the noble metals; with surface plasmon resonance it also can support enhancing light adsorption as well. The doped Ag onto ZnO was determined to improve the photocatalytic decomposition of methylene blue [13,15,25].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Improved the Light Adsorption and Separation of Charge Carriers to Boost Photocatalytic Conversion of CO2 by Using Silver Doped ZnO Photocatalyst

Hoài¹,

Huong²,

Pham

et al. 2022

Catalysts

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This work developed a strategy to enhance the photocatalytic activity of ZnO by doping it with silver nanoparticles (Ag) to improve the light adsorption and separation of charge carriers, which further increases the conversion of CO2. The loading of Ag over ZnO (Ag-ZnO) was confirmed by characterization methods (SEM, XRD, and XPS), and the photocatalytic activities of Ag-ZnO were significantly enhanced. As the result, the production rates of CO and CH4 by doped Ag-ZnO were 9.8 and 2.4 µmol g−1 h−1, respectively. The ZnO that had the production rate of CO was 3.2 µmol g−1 h−1 and it is relatively low for the production of CH4 at around 0.56 µmol g−1 h−1. The doping of Ag over ZnO displayed a high conversion rate for both CO and CH4, which were 3 and 4.2 times higher than that of ZnO. The doped Ag-ZnO photocatalyst also had high stability up to 10 cycles with less than 11% loss in the production of CO and CH4. The improvement of photocatalytic activities of Ag-ZnO was due to the Ag doping, which enhanced the light adsorption (400–500 nm) and narrowed band gap energy (2.5 eV), preventing the charge carrier separation. This work brings an efficient photocatalyst for CO2 conversion in order to reduce carbon dioxide concentration as well as greenhouse gas emissions.

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Section: Photocatalysts Propertiesmentioning

confidence: 75%

Section: Photocatalysts Propertiesmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Improved the Light Adsorption and Separation of Charge Carriers to Boost Photocatalytic Conversion of CO2 by Using Silver Doped ZnO Photocatalyst

Hoài¹,

Huong²,

Pham

et al. 2022

Catalysts

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Aftermath of Ag embedding on structural, optical, and supercapacitor electrode attributes of USP-grown CuO thin films

Güney,

İskenderoğlu,

Güldüren

et al. 2024

Appl. Phys. A

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Here, ultrasonic spray pyrolysis method (USP) was utilized to produce pure and silver doped copper oxide nanostructures on glass substrates. Thereafter, several characterization techniques were conducted on the grown samples to delve into their morphological, structural, electrochemical, and optical aspects. The mentioned analyses were carried out by performing x-ray photoelectron spectroscopy, scanning electron microscope, X-ray diffraction, electrochemical impedance spectroscopy, galvostatic charge-discharge, cyclic voltammetry, and UV–visible spectroscopy measurements. Thus, the impact of silver impurity doping on the relevant aspects of host material were recorded as well as the features of unspoiled copper oxide films. Accordingly, the samples, as indicated by X-ray diffraction results, possessed (002) preferential plane orientation of copper oxide material along with the crystallite sizes ranging from 52.52 nm to 75.02 nm due to the imperfections caused by the silver doping. The scanning electron microscope images exhibited that the silver doping did not form significant modifications in the host material morphology where nanowire-like structures observed. The presence of the suggested materials in the films was verified by the x-ray photoelectron spectroscopy. Also, the UV–visible spectroscopy measurements detected that optical absorbance edge and bandgap energy values red shifted as a result of the impurity doping. The electrochemical supercapacitors performances of the silver doped copper oxide nanostructured thin films were inspected by using the GCD, EIS, and CV. The silver doped copper oxide films demonstrated a specific capacitance value of 66 F/g at a current density of 1 A/g in 1 M KOH electrolyte. From Nyquist plot, Rs, Rcor, Rpo, Ccor and Cc were obtained as 2.327 × 103 Ω.cm2, 43.63 × 103 Ω.cm2, 4.580 × 103 Ω.cm2, 111.5 × 10-6 S*s^a. cm-2 and 101.1 × 10-6 S*s^a. cm-2, respectively. The results indicated that the electrochemically synthesized the silver doped copper oxide electrodes can be obtained and developed as an alternative electrode material for supercapacitors (SCs).

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Effect of Au nanoparticle doped ZnO buffer layer on efficiency in organic solar cells

2023

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Ag-doped ZnO hydrogen sensor grown by the USP method

Cited by 3 publications

References 20 publications

Improved the Light Adsorption and Separation of Charge Carriers to Boost Photocatalytic Conversion of CO2 by Using Silver Doped ZnO Photocatalyst

Improved the Light Adsorption and Separation of Charge Carriers to Boost Photocatalytic Conversion of CO2 by Using Silver Doped ZnO Photocatalyst

Aftermath of Ag embedding on structural, optical, and supercapacitor electrode attributes of USP-grown CuO thin films

Effect of Au nanoparticle doped ZnO buffer layer on efficiency in organic solar cells

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