Growth of ZnO nanorods via low temperature hydrothermal method and their application for Hydrogen production

Phromyothin, Darinee; Phatban, Poosuda; Jessadaluk, Sukittaya; Khemasiri, Narathon; Kowong, Rattanachai; Vuttivong, Sirajit; Pornthreeraphat, Supanit; Chananonnawathorn, Chanunthorn; Horphathum, Mati

doi:10.1016/j.matpr.2017.06.134

Cited by 10 publications

(6 citation statements)

References 11 publications

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“…This study also found that controlled growth of nanorods ranging from a thinner to a larger diameter can be realized by appropriate choice of the initial precursor concentration and deposition time. The hexagonal ZnO nanorods formation via hydrothermal method also in agreement with Phromyothin findings ( Figure 6(d and e)) [38]. Similarly, this study also discovered that as the precursor concentration increased, the average diameter of ZnO nanorods will enlarge.…”

Section: Zno Nanorodssupporting

confidence: 89%

Nanomaterials: An Overview of Nanorods Synthesis and Optimization

Ghassan¹,

Mijan²,

Taufiq‐Yap³

2020

Nanorods and Nanocomposites

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Nanorods are nanostructures that are the object of fundamental and applied research. They may be prepared from carbon, gold, zinc oxide, and many other materials. They are bigger than individual atoms (measured in angstroms, 1Å=10 À10 m) and also than small molecules. The turning point for nanomaterials research was the discovery of carbon nanotubes in 1991. Their mechanical, electrical, and optical properties depend upon their size, allowing for multiple applications. Also, nanorods may be functionalized for different applications. In this Chapter, the methods of synthesis and analysis, and the applications of carbon, zinc oxide, gold, and magnetic nanorods are reviewed.

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Section: Zno Nanorodssupporting

confidence: 89%

Nanomaterials: An Overview of Nanorods Synthesis and Optimization

Ghassan¹,

Mijan²,

Taufiq‐Yap³

2020

Nanorods and Nanocomposites

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“…Figure 2 shows that the length of the ZnO NRs increases exponentially with the increase in HMT molar concentration. The first regime of growth belongs to an early random growth along the fast growth axis of the NRs, based on the fact that a large number of very short rods with a random growth orientation and shape lie at the base near the seeded surface [17,26,27]. The random growth is then followed by an aligned growth arising from the space constraints imposed on the growing rods owing to the dense packing of the seeds.…”

Section: Resultsmentioning

confidence: 99%

Modulating the ZnO NR shape to enhance the luminescence efficiency for optoelectronic applications

Bano

Hussain

El-Naggar

et al. 2020

Mater. Res. Express

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It is essential to control the size of zinc oxide (ZnO) nanorods (NRs) for the improvement of tunable optoelectronic applications. In this paper, we present the results of a systematic and extensive study that explored the effect of growth parameters on the morphology and optoelectronic properties of ZnO NRs. We found that the length and width of ZnO NRs can be efficiently tuned by carefully controlling the growth parameters and by modulating the ZnO seed with reduced graphene (rGO). These results could give us a better understanding of the growth behavior of ZnO NRs and could contribute to the control of the morphology of these NRs for nano-device applications. Moreover, the effect of growth parameters on the optoelectronic properties of ZnO NRs was thoroughly investigated by fabricating light-emitting diodes (LEDs) with different morphologies of the ZnO NRs and the correlation between the morphology and the luminescence efficiency of ZnO was established. These investigations illustrate a viable and highly promising approach to enhance the luminescence intensity of ZnO NR-based LEDs by 500 times. The present work will guide researchers in the production of low-temperature, size-controlled, and aligned ZnO NRs for tunable highly luminescent optoelectronic applications.

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“…If preparation can occur at room temperature and atmospheric pressure, it would allow for fabrication on polymer substrates and reduce costs. In many applications of ZnO NRs as the photoanode in DSSCs, a single-step growth method (using only one type of chemical solution for the growth reaction) is commonly employed. − Although this method can obtain longer NRs with larger dye adsorption, it is usually limited by the insufficient reactants in a single chemical solution, which affects the growth of NRs . Therefore, this paper utilizes the chemical solution method (CSM) to grow ZnO NRs as photoelectrodes and adopts the multiple growth technique (i.e., replacing the chemical solution and continuing the growth of ZnO NRs before the reactants are completely consumed) to investigate the effect of surface morphology changes on solar cell characteristics.…”

Section: Introductionmentioning

confidence: 99%

Enhancing DSSC Performance through Manipulation of the Size of ZnO Nanorods

Lai,

Yang,

Hsu

et al. 2023

ACS Omega

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The synthesis of one-dimensional zinc oxide nanorod photoelectrodes through a chemical solution method and their application in dye-sensitized solar cells are described in this paper. A multiple growth approach was used to fabricate zinc oxide nanorods with varying length-to-diameter ratios, and their dye adsorption properties were characterized using ultraviolet−visible spectroscopy. The zinc oxide photoelectrodes with different length-to-diameter ratios were subsequently incorporated into dye-sensitized solar cells, and their performance and carrier lifetime were analyzed using a solar simulator, monochromatic incident photon-to-electron conversion efficiency, and electrochemical impedance spectroscopy. The highest efficiency achieved was 0.74%. The results indicate that the quality of the zinc oxide nanorods synthesized through the multiple growth approach is consistent, with the uniformity and morphology of the nanorods having the greatest impact on device efficiency.

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Growth of ZnO nanorods via low temperature hydrothermal method and their application for Hydrogen production

Cited by 10 publications

References 11 publications

Nanomaterials: An Overview of Nanorods Synthesis and Optimization

Nanomaterials: An Overview of Nanorods Synthesis and Optimization

Modulating the ZnO NR shape to enhance the luminescence efficiency for optoelectronic applications

Enhancing DSSC Performance through Manipulation of the Size of ZnO Nanorods

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