Enhancing the Performance of Dye‐Sensitized Solar Cells with a Gold‐Nanoflowers Box

Zhang, Lu; Wang, Zhongsheng

doi:10.1002/asia.201601228

Cited by 6 publications

(3 citation statements)

References 39 publications

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“…The leaves of the nanoflower can be seen in the images. The selective area electron diffraction (SAED) pattern (Figure 4F) shows the bright spot with concentric rings reveals the high crystallinity of CoNi nanoflower [59,60] …”

Section: Resultsmentioning

confidence: 99%

“…The selective area electron diffraction (SAED) pattern (Figure 4F) shows the bright spot with concentric rings reveals the high crystallinity of CoNi nanoflower. [59,60] Additionally, to check the magnetic property of bimetallic CoNi nanoflower, vibrating sample magnetometer (VSM) studies were performed, and MÀ H loop was recorded at room temperature (Figure 5). The saturation magnetization (M s ) was recorded to be 90.62 emu/g and retentivity (M r ) 2.63 emu/g, and coercivity 61.61 Oe.…”

Section: Chemistryselectmentioning

confidence: 99%

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Bimetallic CoNi Nanoflowers for Catalytic Transfer Hydrogenation of Terminal Alkynes

2022

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The development of bimetallic and magnetic nanomaterials as a catalyst is highly desirable for organic transformations due to their recyclability for the sustainable future of chemical industries. Bimetallic CoNi nanoflowers were developed via the facile liquid‐phase reduction method and were employed for the hydrogenation of terminal alkynes. The structural and morphological studies were analyzed by X‐ray diffraction, Field‐Emission Scanning Electron Microscopy, and High Resolution Transmission Electron Microscopy. The bimetallic CoNi nanoflower exhibited 100 % conversion with ∼100 % selectivity towards alkane products with recyclability up to six cycles. The transfer hydrogenation mechanism was proposed via diimide formation with Co(0)/Ni(0) state, confirmed by X‐ray Photoemission Spectroscopy analysis.

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Section: Resultsmentioning

confidence: 99%

Section: Chemistryselectmentioning

confidence: 99%

Bimetallic CoNi Nanoflowers for Catalytic Transfer Hydrogenation of Terminal Alkynes

2022

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“…Therefore, doping produces trapped states that impede the electron movement in DSSCs. These trapped states play a dual role, sometimes increasing the efficiency and sometimes decreasing the efficiency of the device [ 68 ]. However, all dopant photoanodes have trapped states; therefore, the number of trapped states increases when increasing the number of dopants.…”

Section: Resultsmentioning

confidence: 99%

Photovoltaic Properties of ZnO Films Co-Doped with Mn and La to Enhance Solar Cell Efficiency

et al. 2022

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In the present investigation, ZnO films co-doped with Mn and La were synthesized by the sol–gel technique. XRD analysis revealed that ZnO had a hexagonal structure. Mixed hexagonal and cubic phases appeared in ZnO containing Mn (1%) and La (1.5%). The grain size, d-spacing, unit cell, lattice parameters, atomic packing fraction, volume, strain, crystallinity, and bond length of co-doped ZnO films were determined as a function of doped ion contents. Through UV analysis, it was found that pristine ZnO had Eg = 3.5 eV, and it decreased when increasing the doping concentration, reaching the minimum value for the sample with 1% Mn and 1% La. The optical parameters of the films, such as absorption, transmittance, dielectric constants, and refractive index, were also analyzed. DSSCs were fabricated using the prepared ZnO films. For pure ZnO film, the values were: efficiency = 0.69%, current density = 2.5 mAcm−2, and open-circuit voltage = 0.56 V. When ZnO was co-doped with Mn and La, the efficiency increased significantly. DSSCs with a ZnO photoanode co-doped with 1% Mn and 1% La exhibited maximum values of Jsc = 4.28 mAcm−2, Voc = 0.6 V, and efficiency = 1.89%, which is 174% better than pristine ZnO-based DSSCs. This material is good for the electrode of perovskite solar cells.

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Valence, Size, and Shape Control of Gold Nanoparticles Synthesized by Electron‐Assisted Reduction

Shi

Wang

2020

Chemistry An Asian Journal

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An electron-assisted strategy was developed to prepare gold nanoparticles (AuNPs) at room temperature. Glow discharge plasma as electron source was successfully used to control the valence state, size, and shape of AuNPs. Stable Au(I) was obtained in 3 min by plasma, and Au(I) was reduced to zero valence with the increase in treatment time. An increase in the amount of Au did not induce an increase in particle size. A narrow size distribution was also achieved. The narrowest size distribution was observed at 9 min at 600 V. AuNPs grew slowly under glow discharge plasma, which slightly changed the mean size of AuNPs. Moreover, the average size of AuNPs was smaller under alkaline conditions. The initial pH of the solution can affect the nucleation and growth of AuNPs and further affect their particle size. Spherical AuNPs, hexagonal AuNPs, rectangular AuNPs, flower-shaped AuNPs, and Au nanorods were easily obtained within 30 min by adding different additives. The hexagonal AuNPs exhibited the largest current response toward caffeine and showed a good linear range (0.1-1000 μM) with a low detection limit (0.064 μM), because their high-energy planes can increase the electron transfer rate and improve electrocatalytic activity.

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Enhancing the Performance of Dye‐Sensitized Solar Cells with a Gold‐Nanoflowers Box

Cited by 6 publications

References 39 publications

Bimetallic CoNi Nanoflowers for Catalytic Transfer Hydrogenation of Terminal Alkynes

Bimetallic CoNi Nanoflowers for Catalytic Transfer Hydrogenation of Terminal Alkynes

Photovoltaic Properties of ZnO Films Co-Doped with Mn and La to Enhance Solar Cell Efficiency

Valence, Size, and Shape Control of Gold Nanoparticles Synthesized by Electron‐Assisted Reduction

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