3D Silver Nanoparticles Decorated Zinc Oxide/Silicon Heterostructured Nanomace Arrays as High-Performance Surface-Enhanced Raman Scattering Substrates

Huang, Jikun; Chen, Feng; Zhang, Qing; Zhan, Yonghua; Ma, Dengke; Xu, Ke; Zhao, Yongxi

doi:10.1021/am507857x

Cited by 92 publications

(56 citation statements)

References 68 publications

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“…Enhancement of the Raman intensity signal from organic molecules, adsorbed on ZnO surface has been observed due to the charge transfer between ZnO and the adsorbed species as reported by Sivashanmugan et al [95] and Wang et al [96]. Application of SERS nanostructures with 3D architecture (Au NP coated ZnO tertapods) has been reported as well [97][98][99]. The developed SERS sensors were studied for apomorphine detection (a component, used for treatment of Parkinson disease) and demonstrated the linear response in the range of concentrations of 1 µM to 100 nM.…”

Section: Sers Based Biosensorsmentioning

confidence: 65%

“…ZnO and ZnO/metal nanostructures are widely used as templates for surface enhanced Raman spectroscopy (SERS) [95,96,97,98,99]. Enhancement of the Raman intensity signal from organic molecules, adsorbed on ZnO surface has been observed due to the charge transfer between ZnO and the adsorbed species as reported by Sivashanmugan et al [95] and Wang et al [96].…”

Section: Sers Based Biosensorsmentioning

confidence: 94%

“…Mostly nanorods (NRs) [36,38,40,43,45,47,48,53,56,74,82,86] and nanowires (NWs) [29,33,42,46,49,75,77,94] were used as a biosensor platform. Nanoparticles (NPs) [35,37,50,83,84,97,98], quantum dots [34,44], other low-dimentional structures [30,32,39,52,70,71,76,79,80,81,85,89,93,95,99] and thin films [31,51,72,73] were also applied. [57], b) SEM images of ZnO nanowires grown on sapphire (0001) substrate 2 …”

Section: Application Of Zno Nanostructures In Biosensorsmentioning

confidence: 99%

“…Various types of ZnO platforms that used as a biosensor basis have been developed [40,41,43,57,63,64,69,73,89,90,92,[94][95][96][97][98][99]. The growth-controlled synthesis of ZnO nanorods in the aqueous phase has been investigated by Balaguera-Gelves et al [40].…”

Section: Novel Trends In Zno Biosensor Platformsmentioning

confidence: 99%

“…Prospects for SERS detection of melamine in milk reported on 3D ZnO nanostructures, decorated with Ag nanoparticles for environmental monitoring and food control have been discussed [95,96,97,98,99]. It was proposed integration of SERS ZnO/Ag 3D nanostructures with microfluidic system.…”

Section: Sers Based Biosensorsmentioning

confidence: 99%

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Optical biosensors based on ZnO nanostructures: advantages and perspectives. A review

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206

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Section: Sers Based Biosensorsmentioning

confidence: 65%

Section: Sers Based Biosensorsmentioning

confidence: 94%

Section: Application Of Zno Nanostructures In Biosensorsmentioning

confidence: 99%

Section: Novel Trends In Zno Biosensor Platformsmentioning

confidence: 99%

Section: Sers Based Biosensorsmentioning

confidence: 99%

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Optical biosensors based on ZnO nanostructures: advantages and perspectives. A review

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Surface Engineering of Nanostructured ZnO Surfaces

Laurenti

Stassi

Canavese

et al. 2016

Adv Materials Inter

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are oriented in one direction and their assembly and stacking produces the wurtzite hexagonal symmetry. The noncentrosymmetric and anisotropic crystalline structure of wurtzite-like ZnO generates very interesting properties such as piezo-and pyro-electricity: the application of an external stimulus, like mechanical stress or temperature, deforms the tetrahedron structure. This deformation results in a separation between the positive and negative centers of charge, inducing the formation of a dipole moment. [7,8] The polar surface and anisotropic structure of ZnO can be usefully exploited to form different kinds of micro and nanostructures from 0D to 3D, [5] including, but not limited to nanowires, [9][10][11][12] nanotubes, [13,14] nanobelts, [15][16][17][18][19] nanorings, [20] flower-like morphologies, [21][22][23][24][25] multipods, [26,27] tetrapods, [28][29][30] sponge-like structures [31][32][33][34] and so on [29,[35][36][37][38][39] (Figure 1). Therefore, several research efforts have been invested in studying various preparation procedures for ZnO micro and nano-materials. Wet chemical approaches, like sol-gel, hydrothermal growths, electrodeposition and template-assisted routes, [40,41] as well as vapor-phase methods, for example chemical vapour deposition (CVD), physical vapour deposition (PVD) including sputtering and evaporation approaches, [42][43][44] and epitaxial growth methods [45] are among the most used ones. The great advantages of the wet chemical approaches are the high synthesis versatility, low temperature employed and low costs. [9] From the other side, dry methods take advantage of the high quality and excellent control over the level of crystallinity of the synthesized ZnO structures, as well as the absence of contamination and high purity of the final material. [46] The combination of different properties with the ease and high versatile synthesis of ZnO material in different micro and nanostructures offers a huge possibility of potential applications.For example, ZnO is already used as an efficient catalyst in the selective oxidation of involving oxygenates (i.e., alcohols, aldehydes, and carboxylic acids) and in methanol synthesis catalysts. It is also largely applied as protective, anti-corrosion layer in galvanized steel products, [49][50][51] as well as in paints and sunscreens as an UV absorber. Its biocompatibility makes this material suitable, in the form of microparticles, for paste formulations in cosmetic applications.The combination of the piezoelectric with the semiconducting properties of ZnO is found to result into new exciting physical properties, [52][53][54] and it has recently opened the research field to energy harvesting application. ZnO nanomaterials can be thus used as nanogenerators, able to convert the mechanical deformation from the surrounding environment into electrical Zinc Oxide (ZnO) nanostructures represent promising substrate materials for numerous applications, ranging from new generation solar cells, to bio-and chemical sensors. This interest is due ...

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Surface Modification of p‐type ZnO Nanorods by Nitrogen Doped SiO₂ Dots as an Efficient Solar Photocatalyst for Degradation of Ciprofloxacin in Water

Cilamkoti,

Dutta

2024

Advanced Sustainable Systems

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A simple two step hydrothermal method is developed for synthesizing p‐type zinc oxide (ZnO) nanorods surface modified with nitrogen doped silicon dioxide dots (ZnO/N‐SiO2). The structure, morphology, and chemical compositions are confirmed by X‐ray diffraction, Raman spectroscopy, Fourier transformed infrared spectroscopy, X‐ray photoelectron spectroscopy, transmission electron microscopy, and by Mott‐Schottky studies. The N‐SiO2 dots on the surface of p‐type ZnO nanorods are formed during hydrothermal treatment at 90 °C (i.e., at 363 K), named as [ZnO/N‐SiO2]363K. While N‐SiO2 dots are embedded in the ZnO nanorods of the batch synthesized at 453 K. The band gap of the batches of ZnO/N‐SiO2 are wider (3.24–3.30 eV) than the pristine ZnO (3.16 eV). The modification of ZnO nanorods by the N‐SiO2 dots is corroborated by changes in the flat band potential, revealed from Mott‐Schottky measurements. The EPR and photoluminescence studies confirm p‐type ZnO attributable to zinc vacancies (VZn). The batch [ZnO/N‐SiO2]363 exhibits maximum photocatalytic degradation of ciprofloxacin in water. The specific rate constant is k′ = 0.97 min−1 g−1, which is nearly three times higher than that exhibited by the irregularly spherical pristine ZnO nanoparticles (k′ = 0.36 min−1 g−1). The enhanced photocatalytic degradation is attributed to holes mediated hydroxyl radical generation. The degradation mechanism is proposed by carrier mobility studies, radical scavenging studies and by identifying the degradation products.

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3D Silver Nanoparticles Decorated Zinc Oxide/Silicon Heterostructured Nanomace Arrays as High-Performance Surface-Enhanced Raman Scattering Substrates

Cited by 92 publications

References 68 publications

Optical biosensors based on ZnO nanostructures: advantages and perspectives. A review

Optical biosensors based on ZnO nanostructures: advantages and perspectives. A review

Surface Engineering of Nanostructured ZnO Surfaces

Surface Modification of p‐type ZnO Nanorods by Nitrogen Doped SiO₂ Dots as an Efficient Solar Photocatalyst for Degradation of Ciprofloxacin in Water

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3D Silver Nanoparticles Decorated Zinc Oxide/Silicon Heterostructured Nanomace Arrays as High-Performance Surface-Enhanced Raman Scattering Substrates

Cited by 92 publications

References 68 publications

Optical biosensors based on ZnO nanostructures: advantages and perspectives. A review

Optical biosensors based on ZnO nanostructures: advantages and perspectives. A review

Surface Engineering of Nanostructured ZnO Surfaces

Surface Modification of p‐type ZnO Nanorods by Nitrogen Doped SiO2 Dots as an Efficient Solar Photocatalyst for Degradation of Ciprofloxacin in Water

Contact Info

Product

Resources

About

Surface Modification of p‐type ZnO Nanorods by Nitrogen Doped SiO₂ Dots as an Efficient Solar Photocatalyst for Degradation of Ciprofloxacin in Water