Efficient photocatalytic degradation of dyes using photo-deposited Ag nanoparticles on ZnO structures: simple morphological control of ZnO

Lim, Hadyanto; Yusuf, Mohammad; Song, Sehwan; Park, Sungkyun; Park, Kang Hyun

doi:10.1039/d0ra10945b

Cited by 42 publications

(18 citation statements)

References 63 publications

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“…Due to the advantages of the photocatalytic process, a review paper was recently published on the selection of suitable methods for the preparation of photocatalysts to obtain the desired size of ZnO nanostructures, which were attempted to improve their photoreaction. Undoubtedly, ZnO has aroused worldwide research interest due to its low toxicity, biocompatibility, and a variety of morphologies. − Morphologically diverse ZnO nanostructures allow a wide area of application due to the fact that the behavior of ZnO is related to their morphology. Wiesmann et al reported a significant role of ZnO nanoparticles (NPs) as innovative agents for medical applications for therapeutic purposes in cancer medicine.…”

Section: Introductionmentioning

confidence: 99%

Insight into the Growth Mechanism and Photocatalytic Behavior of Tubular Hierarchical ZnO Structures: An Integrated Experimental and Theoretical Approach

et al. 2022

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The hydrothermal synthesis of zinc oxide (ZnO) particles from zinc acetylacetonate monohydrate in “pure” aqueous solution and in aqueous NaOH solution at 90 °C is reported. The structural and morphological properties of ZnO particles were investigated by powder X-ray diffraction, X-ray absorption spectroscopy (XAS), field emission scanning electron microscopy, and transmission electron microscopy. The effect of NaOH on the growth mechanism and photocatalytic performance of hierarchical ZnO structures was investigated. The experimental findings, supported by results of quantum chemical calculations at the level of density functional theory, were used to propose the mechanism of nucleation and preferential growth of finely tuned hollow and nonhollow ZnO structures and their effects on the photocatalytic activity. The calculations indicate that the process of ZnO nucleation in “pure” aqueous solution mainly proceeds by the reaction of small monomers, while tetramers play a crucial role in aqueous NaOH solution. Both the preferred ZnO nanostructure and microstructure growth processes are driven by O–H···O hydrogen bonds as controlling elements. The calculated values of the E O···H interaction indicate a stronger interaction via O–H···O hydrogen bonds in “pure” aqueous media (E O···H = −11.73 kcal mol–1) compared to those obtained in aqueous NaOH solution (E O···H = −8.41 kcal mol–1). The specific structural motif of the (ZnO–H2O)12 dodecamers with calculated negative ΔG*INT free release energy indicates that the formation of anisotropic nanocrystalline ZnO with the c-axis as the primary growth direction is spontaneous and accelerated exclusively in “pure” aqueous solution, whereas it is an unfavorable endergonic process in aqueous NaOH solution (ΔG*INT > 0). Efforts have been made to determine the photocatalytic efficiency of the ZnO samples based on the XAS measurements. ZnO particles obtained in “pure” aqueous solution show the highest photocatalytic activity due to the presence of a larger amount of oxygen vacancies.

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Section: Introductionmentioning

confidence: 99%

Insight into the Growth Mechanism and Photocatalytic Behavior of Tubular Hierarchical ZnO Structures: An Integrated Experimental and Theoretical Approach

et al. 2022

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“…For example, Rania et.al reported the preparation of the ZnO nanoparticles by co-precipitation method for solar-driven photodegradation of Congo red dye [18], Mohd Farhan Khan. et.al reported by sol-gel method for antimicrobial activities [19], Hyeonhan Lim et.al reported by hydrothermal method photodegradation studies [20], Mosalagae. et.al reported by ultrasonic spray pyrolysis method [21], Anh Thi Le.et.al reported by solid precipitation method for removal of heavy metal ions [22], Yan Xiu Liu et.al reported microwave-assisted zinc oxide nanoparticles for photodegradation of CTMAB [23], Dapeng Wu et.al. prepared by the solvothermal method for dye-sensitized solar cells [24], Jen-Chieh Lin et.al synthesized by microemulsion technique for dye-sensitized solar cells [25], Raghu and Ram synthesized by supercritical water method [26] and Giri.…”

Section: Introductionmentioning

confidence: 99%

Saussurea lappa plant rhizome extract-based zinc oxide nanoparticles: synthesis, characterization and its antibacterial, antifungal activities and cytotoxic studies against Chinese Hamster Ovary (CHO) cell lines

Kolahalam

Prasad

Krishna

et al. 2021

Heliyon

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The plant extracts are known for their anti-inflammatory, antifungal, antiviral and antibacterial properties. The use of plant extracts in the preparation of bio-materials increases their biological application. In this concern, herein reporting an eco-friendly procedure which is also a simple and cost effective, for the synthesis of Zinc Oxide nanoparticles (ZnONPs) using Saussurea lappa plant root (rhizome) extract as a fuel. The prepared nanoparticles were confirmed using various characterization techniques. The Dynamic light scattering data showed 123.5 nm particle size with -99.9 mv zeta potential which indicates excellent stability of the particles. The peak at 541 cm À1 in the IR spectrum is assigned to the stretching frequency of the zinc-binding to oxygen. The X-ray diffraction peaks confirm the close association with JCPDS Data Card No: 36-1451. The FESEM data revealed a hexagonal wurtzite structure with a hexagonal shape of synthesized ZnO nanoparticles. The antibacterial studies indicate the gram-negative strains showed better inhibition activity than gram-positive strains. Among Fungal strains, Aspergillus niger and flavus, Fusarium oxysporum, and Rhizopus oryzae showed good inhibition activity at higher concentrations. The cytotoxic data indicates the 5 μg/mL of the ZnO particles showed cytotoxicity on the CHO cell line and with IC 50 value 3.164 AE 0.8956 μg/mL.

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“…Organic contaminants, which are mainly employed in processing products such as fabrics, cosmetics, leather, plastic, ceramics, paper, ink-jet printing, pharmaceuticals, etc. [ 2 , 3 , 4 ], are due to the discharge of organic dyes through industrial wastewater. In aquatic life, different pollutants were identified, including textile dyes, surfactants, insecticides, pesticides and heavy metals [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

“…Such defects generate mid-bandgap energy levels which are reported to increase carrier trapping leading to rapid non-radiative recombination of the electron–hole pairs within the semiconducting materials. Although doping can be used to enhance the general efficiency of the photocatalyst, many contributions to a changing performance have to be considered, such as preparation method [ 23 ], particle morphology [ 12 , 24 ], surface properties [ 25 , 26 ] and defects [ 27 ], dopant concentration [ 2 ] as well as the charge transfer dynamics of the discoloration process [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Performance of Undoped and Al-Doped ZnO Nanoparticles in the Degradation of Rhodamine B under UV-Visible Light:The Role of Defects and Morphology

Piras

Olla

Reekmans

et al. 2022

IJMS

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Quasi-spherical undoped ZnO and Al-doped ZnO nanoparticles with different aluminum content, ranging from 0.5 to 5 at% of Al with respect to Zn, were synthesized. These nanoparticles were evaluated as photocatalysts in the photodegradation of the Rhodamine B (RhB) dye aqueous solution under UV-visible light irradiation. The undoped ZnO nanopowder annealed at 400 °C resulted in the highest degradation efficiency of ca. 81% after 4 h under green light irradiation (525 nm), in the presence of 5 mg of catalyst. The samples were characterized using ICP-OES, PXRD, TEM, FT-IR, 27Al-MAS NMR, UV-Vis and steady-state PL. The effect of Al-doping on the phase structure, shape and particle size was also investigated. Additional information arose from the annealed nanomaterials under dynamic N2 at different temperatures (400 and 550 °C). The position of aluminum in the ZnO lattice was identified by means of 27Al-MAS NMR. FT-IR gave further information about the type of tetrahedral sites occupied by aluminum. Photoluminescence showed that the insertion of dopant increases the oxygen vacancies reducing the peroxide-like species responsible for photocatalysis. The annealing temperature helps increase the number of red-emitting centers up to 400 °C, while at 550 °C, the photocatalytic performance drops due to the aggregation tendency.

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Efficient photocatalytic degradation of dyes using photo-deposited Ag nanoparticles on ZnO structures: simple morphological control of ZnO

Abstract: Morphology control of ZnO structures were fabricated by hydrothermal method with simple adjustments of NaOH concentration and Ag–ZnO composite showed superior photoactivity and recyclability for the degradation of MO and RhB.

Cited by 42 publications

References 63 publications

Insight into the Growth Mechanism and Photocatalytic Behavior of Tubular Hierarchical ZnO Structures: An Integrated Experimental and Theoretical Approach

Insight into the Growth Mechanism and Photocatalytic Behavior of Tubular Hierarchical ZnO Structures: An Integrated Experimental and Theoretical Approach

Saussurea lappa plant rhizome extract-based zinc oxide nanoparticles: synthesis, characterization and its antibacterial, antifungal activities and cytotoxic studies against Chinese Hamster Ovary (CHO) cell lines

Photocatalytic Performance of Undoped and Al-Doped ZnO Nanoparticles in the Degradation of Rhodamine B under UV-Visible Light:The Role of Defects and Morphology

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