Enhanced photocatalytic degradation of rhodamine 6G (R6G) using ZnO–Ag nanoparticles synthesized by pulsed laser ablation in liquid (PLAL)

Yudasari, Nurfina; Anugrahwidya, Rahma; Tahir, Dahlang; Suliyanti, Maria Margaretha; Herbani, Yuliati; Imawan, Cuk; Khalil, Munawar; Djuhana, Dede

doi:10.1016/j.jallcom.2021.161291

Cited by 49 publications

(30 citation statements)

References 69 publications

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“…Jain et al 2007 reported that photocatalytic degradation of R-B using TiO 2 in electron acceptor H 2 O 2 also showed a decline in the percentage degradation with the increase in the dye concentration [53]. Similar findings were obtained in the photocatalytic removal of R-6G using ZnO-Ag nanoparticles prepared by pulsed laser ablation in liquid (PLAL) [54]. The photocatalytic degradation of Rhodamine B was studied using thin film Fe 2 O 3 /TiO 2 under 10 W of 365 nm LED black light blue (BLB) irradiation at room temperature.…”

Section: Effect Of Concentrationmentioning

confidence: 65%

Novel nanocomposite thin films for efficient degradation of Rhodamine B and Rhodamine 6G under visible light irradiation: Reaction Mechanism and Pathway studies

Vanlalhmingmawia¹,

Sreenivasa²,

Tiwari³

et al. 2022

Environmental Engineering Research

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The present investigation aims to synthesize the novel nanocomposite thin film and utilize the material to remove emerging dyes efficiently (i.e., Rhodamine B (R-B) and Rhodamine 6G (R-6G)), in an aqueous solution using LED visible light and UV-A light. A facile synthetic route was adopted to obtain the TiO2-supported bentonite and <i>in situ</i> decorated with Au nanoparticles (NPs) thin film. The advanced analytical techniques characterizes the materials. The laboratory scale reactor was utilized for efficient degradation of R-B and R-6G using thin film catalysts. The percentage removal of R-B was 54.13% (visible light) and 76.26% (UV-A light) and the R-6G, was removed 60.37% (visible light) and 84.68% (UV-A light) at the initial pollutant concentration of 0.5 mg/L and at pH 6.0 using the thin film photocatalyst. The parametric studies demonstrated the insights of degradation mechanisms in photocatalytic operations. A significant mineralization of these dyes is achieved, and the repeated use in reactor operations indicated the catalysts

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Section: Effect Of Concentrationmentioning

confidence: 65%

Novel nanocomposite thin films for efficient degradation of Rhodamine B and Rhodamine 6G under visible light irradiation: Reaction Mechanism and Pathway studies

Vanlalhmingmawia¹,

Sreenivasa²,

Tiwari³

et al. 2022

Environmental Engineering Research

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“…Therefore, luminescent quenching will be strongly observed. The generation of radicals is one of the main reasons for luminescent quenching and degradation of the dye R6G …”

Section: Results and Discussionmentioning

confidence: 99%

“…Photocatalytic performances of TiO 2 , rGO, and the obtained rGO/TiO 2 nanocomposites were determined by studying the dye degradation profile under UV irradiation (λ = 352 nm) for 4 h with rhodamine 6G (R6G) as the dye model. Briefly, six different samples, namely, R6G, rGO, TiO 2 , composite A, composite B, and composite C, were prepared by mixing 500 mL of R6G solution with 25 mL of catalyst solutions containing DI water, rGO, TiO 2 , composite A, composite B, and composite C, respectively.…”

Section: Methodsmentioning

confidence: 99%

Facile and Green Fabrication of Microwave-Assisted Reduced Graphene Oxide/Titanium Dioxide Nanocomposites as Photocatalysts for Rhodamine 6G Degradation

et al. 2021

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Organic pollutants, such as synthetic dyes, are treated to prevent them from contaminating natural water sources. One of the treatment methods is advanced oxidation process using a photocatalyst material as the active agent. However, many photocatalysts are hindered by their production cost and efficiency. In this study, nanocomposites consisting of reduced graphene oxide and titanium dioxide (rGO/TiO2) were prepared by a simple and green approach using the microwave-assisted method, and we utilized a graphene oxide (GO) precursor that was fabricated through the Tour method. The ratios of rGO/TiO2 in nanocomposites were varied (2:1, 1:1, and 1:2) to know the influence of rGO on the photocatalytic performance of the nanocomposites for rhodamine 6G degradation. Transmission electron microscopy (TEM) observation revealed that a transparent particle with a sheetlike morphology was detected in the rGO sample, suggesting that a very thin film of a few layers of GO or rGO was successfully formed. Based on scanning electron microscopy (SEM) observation, the rGO/TiO2 nanocomposites had a wrinkled and layered rGO structure decorated by TiO2 nanoparticles with average diameters of 125.9 ± 40.6 nm, implying that rGO layers are able to prevent TiO2 from agglomeration. The synthesized product contained only rGO and TiO2 in the anatase form without impurities that were proven by Raman spectra and X-ray diffraction (XRD). The nanocomposite with rGO/TiO2 ratio 1:2 (composite C) was found to be the best composition in this study, and it was able to degrade 82.9 ± 2.4% of the rhodamine 6G after UV irradiation for 4 h. Based on a time-resolved photoluminescence study at wavelength emission 500 nm, the average decay lifetime of R6G-rGO/TiO2 composites (2.91 ns) was found to be longer than that of the R6G-TiO2 sample (2.05 ns), implying that the presence of rGO in rGO/TiO2 composites successfully suppressed the electron–hole recombination process in TiO2 and significantly improved their photocatalytic performance. This study showed that the rGO/TiO2 nanocomposites synthesized through relatively simple and eco-friendly processes display promising prospects for photocatalytic degradation of dyes and other recalcitrant pollutants in a water stream.

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“… Material Morphology Synthesis method Solvent used Laser parameters Application Efficiency Ref. 1 ZnO-MWCNTs Tubes and particles PLAL H 2 O (functionalized CNT solution) Nd:YAG laser, λ = 1064 nm, 7 ns, 10 Hz, 100 mJ-Metal: Zn metal Methylene blue (MB) 80% 241 2 Oxygen-deficient black-ZnO Spherical PLAL Isopropanol Nd: YAG laser, λ = 532 nm, 10 ns, 10 Hz, Metal: Zn powder Rhodamine B (RhB) 90% 153 3 ZnO-Ag nanoparticles Spherical PLAL H 2 O Laser 1064 nm, 30 min, Metal: Zn plate, Ag plate Rhodamine 6G (R6G) 90% 242 4 MWCNTs/Ag nanocomposite Tubes and particles PLAL H 2 O (functionalized MWCNTs solution) Nd:YAG laser, λ = 1064 nm, 7 ns, 10 Hz, 100 mJ- Metal: Ag-metal 4-Nitrophenol (4-NP), MB, methyl orange (MO) 90%, 100%, 100% 243 5 Ag metallic nanoparticles (NPs) and Ag/Au nanocomposites Spherical PLAL H 2 O and chloroauric acid Nd:YAG, λ = 1064 nm, 7 ns, 10 Hz and 60 mJ, Metal: Ag plate 4-NP 100% 244 6 Plasmonic ZnO/Au/g-C 3 N 4 nanocomposites Spherical and sheets PLI H 2 O and methanolic solution of HAuCl 4 ·3H 2 O Q-switched Nd:YAG, λ = 1064 nm, 7 ns, Metal: Zn plate MB 100% 245 ...…”

Section: Photo- and Electrocatalytic Materials: An Overviewmentioning

confidence: 99%

Fundamentals and comprehensive insights on pulsed laser synthesis of advanced materials for diverse photo- and electrocatalytic applications

et al. 2022

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The global energy crisis is increasing the demand for innovative materials with high purity and functionality for the development of clean energy production and storage. The development of novel photo- and electrocatalysts significantly depends on synthetic techniques that facilitate the production of tailored advanced nanomaterials. The emerging use of pulsed laser in liquid synthesis has attracted immense interest as an effective synthetic technology with several advantages over conventional chemical and physical synthetic routes, including the fine-tuning of size, composition, surface, and crystalline structures, and defect densities and is associated with the catalytic, electronic, thermal, optical, and mechanical properties of the produced nanomaterials. Herein, we present an overview of the fundamental understanding and importance of the pulsed laser process, namely various roles and mechanisms involved in the production of various types of nanomaterials, such as metal nanoparticles, oxides, non-oxides, and carbon-based materials. We mainly cover the advancement of photo- and electrocatalytic nanomaterials via pulsed laser-assisted technologies with detailed mechanistic insights and structural optimization along with effective catalytic performances in various energy and environmental remediation processes. Finally, the future directions and challenges of pulsed laser techniques are briefly underlined. This review can exert practical guidance for the future design and fabrication of innovative pulsed laser-induced nanomaterials with fascinating properties for advanced catalysis applications.

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Enhanced photocatalytic degradation of rhodamine 6G (R6G) using ZnO–Ag nanoparticles synthesized by pulsed laser ablation in liquid (PLAL)

Cited by 49 publications

References 69 publications

Novel nanocomposite thin films for efficient degradation of Rhodamine B and Rhodamine 6G under visible light irradiation: Reaction Mechanism and Pathway studies

Novel nanocomposite thin films for efficient degradation of Rhodamine B and Rhodamine 6G under visible light irradiation: Reaction Mechanism and Pathway studies

Facile and Green Fabrication of Microwave-Assisted Reduced Graphene Oxide/Titanium Dioxide Nanocomposites as Photocatalysts for Rhodamine 6G Degradation

Fundamentals and comprehensive insights on pulsed laser synthesis of advanced materials for diverse photo- and electrocatalytic applications

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