Fabrication of ZnO-RGO nanorods by electrospinning assisted hydrothermal method with enhanced photocatalytic activity

Ramos, Pierre G.; Flores, Edson; Luyo, Clemente; Sánchez, Luis A.; Rodríguez, Juan Rodríguez

doi:10.1016/j.mtcomm.2019.03.010

Cited by 36 publications

(23 citation statements)

References 48 publications

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“…In addition, the highest photocatalytic activity was obtained for the ZnO/rGO NRs prepared with 0.4 mg/mL concentration of rGO deposited in the surface of single ZnO NRs. The MO degradation process was further investigated by the first-order reaction kinetic model [23]. The rate expression is: 𝑙𝑛(𝐶 0 𝐶 𝑡 ⁄ ) = 𝑘𝑡.…”

Section: Resultsmentioning

confidence: 99%

“…It can be inferred that the photocatalytic activity of the ZnO NRs is greatly improved by the GO and rGO adhered to the ZnO surface. The improvement of photocatalytic performance of ZnO/GO and ZnO/rGO NRs as compared to pristine ZnO NRs is must be attributed to the fact that the carbonaceous materials (rGO or GO) can act as electron transporters phases hindering the recombination of the electron-hole pair [23,24].…”

Section: Resultsmentioning

confidence: 99%

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Enhanced Photocatalytic Activity of ZnO Nanorods/(Graphene Oxide, Reduced Graphene Oxide) for Degradation of Methyl Orange Dye

Sánchez

Huayta

Ramos

et al. 2022

J. Phys.: Conf. Ser.

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ZnO has been well-known as a significant photocatalyst material due to its high surface area, efficient charge transport, and superior photosensitivity. Even though photocatalysis using bare ZnO NRs is useful in pollutant remediation, two main drawbacks scale down their performance as photocatalysts. First, ZnO NRs absorb mainly the UV light, which compromises a small portion of the solar spectrum, and second, the high recombination rate in the ZnO NRs prevents the path of electron-hole outward and then reduces the photocatalysis efficiency. In this work, ZnO-NRs, ZnO-NRs/Graphene Oxide (GO), and ZnO-NRs/Reduced Graphene Oxide (rGO) array composites were vertically grown on conductive glass substrates of SnO2:F (FTO). The films were synthesized by hydrothermal method using ZnO seed layers deposited by spray pyrolysis technique. The nanosheets of GO and rGO were anchored onto the surface of the as-prepared ZnO-NRs by using the spray deposition technique (SDT). The photocatalytic activity of these materials was studied by analyzing the degradation of methylene orange (MO) in an aqueous solution under ultraviolet light, and we found that the decoration of ZnO-NRs with nanosheets of GO and rGO resulted in a significant enhancement of the photocatalytic degradation efficiency, where ZnO-NRs/rGO are more efficient than ZnO-NRs/GO and the latter better than pure ZnO-NRs.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Enhanced Photocatalytic Activity of ZnO Nanorods/(Graphene Oxide, Reduced Graphene Oxide) for Degradation of Methyl Orange Dye

Sánchez

Huayta

Ramos

et al. 2022

J. Phys.: Conf. Ser.

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“…Natural biopolymers, including silk fibroin, chitosan, and collagen, are also widely used in electrospinning research. When nanoscale components such as nanoparticles [140][141][142], nanotubes [143][144][145], nanowires [146,147], or nanorods [148][149][150] are incorporated into the polymer solutions, electrospun nanocomposites that combine the properties of both components can be generated. Figure 8.…”

Section: Polymer Parametersmentioning

confidence: 99%

Electrospun Conducting Polymers: Approaches and Applications

2022

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Inherently conductive polymers (CPs) can generally be switched between two or more stable oxidation states, giving rise to changes in properties including conductivity, color, and volume. The ability to prepare CP nanofibers could lead to applications including water purification, sensors, separations, nerve regeneration, wound healing, wearable electronic devices, and flexible energy storage. Electrospinning is a relatively inexpensive, simple process that is used to produce polymer nanofibers from solution. The nanofibers have many desirable qualities including high surface area per unit mass, high porosity, and low weight. Unfortunately, the low molecular weight and rigid rod nature of most CPs cannot yield enough chain entanglement for electrospinning, instead yielding polymer nanoparticles via an electrospraying process. Common workarounds include co-extruding with an insulating carrier polymer, coaxial electrospinning, and coating insulating electrospun polymer nanofibers with CPs. This review explores the benefits and drawbacks of these methods, as well as the use of these materials in sensing, biomedical, electronic, separation, purification, and energy conversion and storage applications.

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“…[28][29][30][31][32][33] In addition, carbonaceous materials like g-C 3 N 4 , carbon nanotubes, reduced graphene oxide, carbon nanobers were also combined with ZnO. [34][35][36] Due to the higher conductivity, chemical durability, and specic surface area, rGO is a preferred choice for ZnO to improve its photocatalytic activity. A variety of synthetic approaches like hydrothermal, coprecipitation, combustion synthesis, etc.…”

Section: Introductionmentioning

confidence: 99%

Reduced graphene oxide supported ZnO quantum dots for visible light-induced simultaneous removal of tetracycline and hexavalent chromium

et al. 2020

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Fabrication of ZnO-RGO nanorods by electrospinning assisted hydrothermal method with enhanced photocatalytic activity

Cited by 36 publications

References 48 publications

Enhanced Photocatalytic Activity of ZnO Nanorods/(Graphene Oxide, Reduced Graphene Oxide) for Degradation of Methyl Orange Dye

Enhanced Photocatalytic Activity of ZnO Nanorods/(Graphene Oxide, Reduced Graphene Oxide) for Degradation of Methyl Orange Dye

Electrospun Conducting Polymers: Approaches and Applications

Reduced graphene oxide supported ZnO quantum dots for visible light-induced simultaneous removal of tetracycline and hexavalent chromium

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