One-step electrodeposition of ZnO/graphene composite film as photoanode for dye-sensitised solar cells

Sha, Simiao; Lü, Hui; Yang, Shaolin; Li, Tong; Wu, Jiandong; Ma, Jingtan; Wang, Kang; Hou, Chunping; Sheng, Zhilin; Li, Yingchun

doi:10.1016/j.colsurfa.2021.127491

Cited by 15 publications

(6 citation statements)

References 29 publications

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“…The new peaks at 2920 and 2850 cm –1 are generated by the C–H stretching vibration of the alkyl chain methylene . The absorption peak located at 1718 cm –1 is assigned to the CO bond . Simultaneously, new peaks that emerged at around 1464 cm –1 are ascribed to the −CH 2 – or −CH 3 group, resulting from the formation of stearate .…”

Section: Resultsmentioning

confidence: 97%

Hierarchical Fusiform ZnO-Constructed Nanoflowers Electrodeposited on Stainless-Steel Mesh with Switchable Wettability for On-Demand Separation of Oil–Water Emulsion and Photocatalytic Degradation for Water-Soluble Pollutants

Yang,

Li,

Wang

et al. 2024

ACS Sustainable Chem. Eng.

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Hierarchical zinc oxide (ZnO) micronano structures have attracted plenty of research interests, which are extensively applied in emulsion separation and photocatalysis. In this study, fusiform ZnO-constructed nanoflowers were coated on a stainless-steel mesh (SSM) via an easy one-step electrodeposition approach. The ZnO@SSM membrane exhibited excellent superhydrophilicity with a water contact angle (WCA) of approximately 0° and underwater superoleophobicity with an underwater–oil contact angle (UOCA) of 164.3°. Reversible wettability transformation of the ZnO@SSM membrane between superhydrophilicity/underwater superoleophobicity and superhydrophobicity/superoleophilicity was quickly achieved by the alternate treatment on the membrane with stearic acid (SA) ethanol solution and NaOH solution. The designed membrane can synchronously possess considerable oil–water emulsion separation capacity and efficient photocatalytic degradation for a water-soluble pollutant. The separation efficiency (SE) of surfactant-stabilized emulsion was greater than 99.0%, along with fast permission fluxes up to 489.4 L·m–2·h–1 (oil-in-water) and 676.0 L·m–2·h–1 (water-in-oil). The maximum degradation efficiency for methylene blue (MB) solution was up to 99.0% under visible-light irradiation in 90 min. This novel, sustainable, and multifunctional membrane with a hierarchical structure of fusiform ZnO-constructed nanoflowers has a wide application prospect in the treatment of practically emulsified wastewater.

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Section: Resultsmentioning

confidence: 97%

Hierarchical Fusiform ZnO-Constructed Nanoflowers Electrodeposited on Stainless-Steel Mesh with Switchable Wettability for On-Demand Separation of Oil–Water Emulsion and Photocatalytic Degradation for Water-Soluble Pollutants

Yang,

Li,

Wang

et al. 2024

ACS Sustainable Chem. Eng.

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“…The working electrode is coupled with the counter electrode that serves as a reduction catalyst. In between, an electrolyte that functions as a redox couple is injected [ 20 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis, characterization and optimization of TiO2 nanoparticles by novel marine halophilic Halomonas sp. RAM2: application of natural dye-sensitized solar cells

et al. 2023

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Background Metal oxide nanoparticles (NPs) are becoming valuable due to their novel applications. The green synthesis of TiO2 NPs is more popular as a flexible and eco-friendly method compared to traditional chemical synthesis methods. TiO2 NPs are the most commonly used semiconductor in dye-sensitized solar cells (DSSCs). Results The biogenic TiO2 NPs were produced extracellularly by the marine halophilic bacterium Halomonas sp. RAM2. Response surface methodology (RSM) was used to optimize the biosynthesis process, resulting in a starting TiO2 concentration of 0.031 M and a pH of 5 for 92 min (⁓15 nm). TiO2 NPs were well-characterized after the calcination process at different temperatures of 500, 600, 700 and 800 °C. Anatase TiO2 NPs (calcined at 500 °C) with a smaller surface area and a wider bandgap were nominated for use in natural dye-sensitized solar cells (NDSSCs). The natural dye used as a photosensitizer is a mixture of three carotenoids extracted from the marine bacterium Kocuria sp. RAM1. NDSSCs were evaluated under standard illumination. After optimization of the counter electrode, NDSSCBio(10) (10 layers) demonstrated the highest photoelectric conversion efficiency (η) of 0.44%, which was almost as good as NDSSCP25 (0.55%). Conclusion The obtained results confirmed the successful green synthesis of TiO2 NPs and suggested a novel use in combination with bacterial carotenoids in DSSC fabrication, which represents an initial step for further efficiency enhancement studies.

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“…The ZnO structure can be made into nanofibers [5], nanorods, nanowires, and nanoflowers [6]. ZnO with nanofiber structure has advantages compared to other forms.…”

Section: Introductionmentioning

confidence: 99%

Growth of Nanofibers Zinc Oxide on Porous Silicon Substrates using Electrospinning Method: Effect of Temperatures

Suryana,

Mustofa,

Diantoro

2023

J. Phys.: Conf. Ser.

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Electrospinning successfully grew zinc oxide (ZnO) nanofibers onto porous silicon (PSi). The ZnO sprayed solution was prepared from the mixture of zinc acetate hydrate dissolved in distilled water and polyvinyl alcohol (PVA) precursor with a ratio of 1:3 wt. %. The obtained ZnO fibers sample was subsequently annealed at RT, 100°C, 200°C, and 300°C. ZnO polycrystal with hexagonal wurtzite structure formed on PSi substrates at the orientation of (002), (102), and (110). SEM characterization revealed that the average diameter of fibers decreased with the increased annealing temperature due to the decomposition of the PVA and acetate groups. The ATR-FTIR spectral showed the presence of a metal oxide bond group owing to ZnO characteristics on the PSi surface.

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One-step electrodeposition of ZnO/graphene composite film as photoanode for dye-sensitised solar cells

Cited by 15 publications

References 29 publications

Hierarchical Fusiform ZnO-Constructed Nanoflowers Electrodeposited on Stainless-Steel Mesh with Switchable Wettability for On-Demand Separation of Oil–Water Emulsion and Photocatalytic Degradation for Water-Soluble Pollutants

Hierarchical Fusiform ZnO-Constructed Nanoflowers Electrodeposited on Stainless-Steel Mesh with Switchable Wettability for On-Demand Separation of Oil–Water Emulsion and Photocatalytic Degradation for Water-Soluble Pollutants

Biosynthesis, characterization and optimization of TiO2 nanoparticles by novel marine halophilic Halomonas sp. RAM2: application of natural dye-sensitized solar cells

Growth of Nanofibers Zinc Oxide on Porous Silicon Substrates using Electrospinning Method: Effect of Temperatures

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