Ag nanoparticles on ZnO nanoplates as a hybrid SERS-active substrate for trace detection of methylene blue

Phạm, Thị Thu Hà; Vu, Xuan Hoa; Dien, Nguyen Dac; Trang, Tran Thu; Kim, Tran Thi; Phuong, Pham Ha; Nghĩa, Nguyễn Trọng

doi:10.1039/d2ra00620k

Cited by 36 publications

(17 citation statements)

References 77 publications

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“…The sizes and shapes of Ag NPs and ZnO NPls are similar to those previously reported. 27 The EDX investigation was also implemented to study the ZnO/Ag hybrid structure (Fig. 1e).…”

Section: Resultsmentioning

confidence: 99%

“…In a typical hydrothermal growth process, ZnO nanoplates (NPls) were fabricated using a method reported previously. 27 ZnO nanoplates decorated with Ag nanoparticles (Ag NPs) were prepared following brief instructions. 60 mg of ZnO NPl powder was dispersed in 20 mL of deionized water in a beaker (50 mL) under moderate magnetic stirring for 15 minutes.…”

Section: Experiments Sectionmentioning

confidence: 99%

“…26 This report indicates great potential for effective SERS substrate stemming from electromagnetic and chemical enhancement mechanisms. Our previous report also used a ZnO nanoplate decorated with silver nanoparticles to probe methylene blue, and the result also revealed great SERS performance, with the limit of detection reaching 10 −9 M. 27 However, most of those workers have neither quantified the SERS mechanism's contribution nor given experimental evidence for their explanation of the SERS mechanism.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Raman scattering based on a ZnO/Ag nanostructured substrate: an in-depth study of the SERS mechanism

Trang

Thi

et al. 2023

Phys. Chem. Chem. Phys.

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“…The sizes and shapes of Ag NPs and ZnO NPls are similar to those previously reported. 27 The EDX investigation was also implemented to study the ZnO/Ag hybrid structure (Fig. 1e).…”

Section: Resultsmentioning

confidence: 99%

Section: Experiments Sectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Enhanced Raman scattering based on a ZnO/Ag nanostructured substrate: an in-depth study of the SERS mechanism

Trang

Thi

et al. 2023

Phys. Chem. Chem. Phys.

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“…A similar dependence of photolysis efficiency on the amount of Ag loading has been documented previously. 26 The photolysis efficiency of Ag/ZnO undergoes the smaller amount of Ag on the ZnO surface. Because of the less accumulation of some small particles, the dispersion of Ag usually decreases with the increase in load.…”

Section: Selectivity Of the Best Photocatalyst Surfacementioning

confidence: 99%

Removal of Pollutants from Aqueous Solutions by using Zinc oxide Nanoparticles

Bedano¹,

Alkaim²

2022

IJPQA

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>This work presents a low-cost method to produce Zinc oxide (ZnO) nanostructured materials for the treatment of water polluted with model organic pollutants (e.g., brilliant green dye). Zinc oxide was prepared using the thermal solvent technique at a temperature of 37°C, at pH 6, and the samples were incinerated for one hour at a temperature of (500°C). Also, silver doped ZnO (Ag-ZnO) was prepared by photo deposition using ultraviolet rays. The photodissociation of Brilliant green dye was studied using ultraviolet rays under different conditions in the presence of Ag-ZnO, studying the effect of some factors, such as the effect of dye concentration and intensity of incident light. The results showed that the smashing efficiency of the zinc oxide surface increased by 92.8% after adding silver. It also showed that the photocatalytic breakdown rate increases with decreasing concentration of Brilliant green dye. Increasing the intensity of the light led to an increase in the rate of photocatalytic breakdown.

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“…In addition, zinc oxide/gold (silver) heterostructures with plasmonic-enhanced photoelectrochemical activity also were used for photoelectrochemical hydrogen generation [ 19 , 20 ]. On the basis of heterodimeric composites, sensor systems were created [ 21 , 22 , 23 , 24 , 25 , 26 ]. Moreover, synthesis of ZnO nanostructures and their functionalization by Au nanoparticles for improved photocatalytic and high performance Li-ion battery anodes were carried out [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

One-Pot Synthesis of Colloidal Hybrid Au (Ag)/ZnO Nanostructures with the Participation of Maleic Acid Copolymers

et al. 2023

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One-pot synthesis of colloidal Au/ZnO and Ag/ZnO nanohybrid structures was carried out. The copolymers of maleic acid—poly(N-vinyl-2-pyrrolidone-alt-maleic acid), poly(ethylene-alt-maleic acid), or poly(styrene-alt-maleic acid) were used as templates for the sorption of cations of metals-precursors and stabilization of the resulting nanoheterostructures. Simultaneous production of two types of nanoparticles has been implemented under mild conditions in an aqueous alkaline medium and without additional reagents. Equimolar ratios of the metal cations and appropriate load on all copolymers were used: molar ratio of maleic acid monomeric units of copolymer/gold (silver)cations/zinc cations was 1/0.15/0.23 (1/0.3/0.15). The process of obtaining the heterostructures was studied using UV-Vis spectroscopy. The kinetics of the formation of heterostructures was influenced by the nature of the maleic acid copolymer and noble metal cations used. A high reaction rate was observed in the case of using zinc and gold cations-precursors and a copolymer of maleic acid with N-vinylpyrrolidone as a stabilizer of nanoparticles. The structure of the synthesized polymer-stabilized heterostructures was studied using instrumental methods of analysis—XPS, FTIR, PXRD, and TEM. Under the conditions used, stable colloidal solutions of heterodimers were obtained, and such structure can be converted to a solid state and back without loss of properties.

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Ag nanoparticles on ZnO nanoplates as a hybrid SERS-active substrate for trace detection of methylene blue

Abstract: Decorating two-dimensional (2D) nanomaterials with nanoparticles provides an effective method to integrate their physicochemical properties.

Cited by 36 publications

References 77 publications

Enhanced Raman scattering based on a ZnO/Ag nanostructured substrate: an in-depth study of the SERS mechanism

Enhanced Raman scattering based on a ZnO/Ag nanostructured substrate: an in-depth study of the SERS mechanism

Removal of Pollutants from Aqueous Solutions by using Zinc oxide Nanoparticles

One-Pot Synthesis of Colloidal Hybrid Au (Ag)/ZnO Nanostructures with the Participation of Maleic Acid Copolymers

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