Silver nanoplate-pillared mesoporous nano-clays for surface enhanced raman scattering

Gwak, Gyeong‐Hyeon; Yamaguchi, T.; Kim, Minkyu; Park, Jin Kuen; Oh, Jae‐Min

doi:10.1016/j.jiec.2020.05.021

Cited by 5 publications

(10 citation statements)

References 51 publications

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Section: Resultsmentioning

confidence: 99%

“…Another research from Makita et al [ 62 ] suggested that the surface oxidation on AgNP gradually proceeded during the period of exposure in air. We also observed that the Ag nanosheets grown in the nano-clay layer contained partial positive charge, due to the surface oxidation [ 32 ].…”

Section: Resultsmentioning

confidence: 99%

“…The diffractogram of Ag/3-MPA showed well-developed (00l) patterns with d-spacing 13.2 Å ( Figure 1A). According to our previous research, Ag-thiolate complex with 3-MPA moiety formed quasi-hexagonal 2-dimensional layers that were interconnected through dimerization between carboxylic acids from adjacent layers [32]. Considering the thickness of the Ag-S slab of (13-14) Å, chain length of 3-MPA (6.2 Å), and hydrogen bonding between carboxylic acids (~1 Å), the d-spacing value 13.2 Å suggested successful formation of the layered Ag/3-MPA structure.…”

Section: Crystal Strucutre Of Ag@ldomentioning

confidence: 90%

“…Recently, we have suggested a method to grow highly anisotropic Ag nanosheet between clay layers to take advantage of the sharp edges as hotspots [ 31 , 32 ]. As a proof-of-concept, the papers suggested that thin Ag nanosheets could be grown between the clay layers [ 31 ].…”

Section: Introductionmentioning

confidence: 99%

“…As a proof-of-concept, the papers suggested that thin Ag nanosheets could be grown between the clay layers [ 31 ]. In the successive work, the potential application of the prepared AgNP-clay for SERS detection was demonstrated with a probe molecule, rhodamine 6G dye [ 32 ]. However, the previous works focused on the physicochemical characterization on AgNP-clay structure, lacking quantitative data to address how the AgNP-clay activated the SERS performance.…”

Section: Introductionmentioning

confidence: 99%

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Porous Hybrids Structure between Silver Nanoparticle and Layered Double Hydroxide for Surface-Enhanced Raman Spectroscopy

Lee

Paek

2021

Nanomaterials

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Silver nanoparticle (AgNP), in terms of antibacterial, catalytic, electronic, and optical applications, is an attractive material. Especially, when prepared to furnish sharp edge and systematic particle orientation on the substrate, AgNPs can take advantage of surface-enhanced Raman spectroscopy (SERS). In this research, we suggested a synthetic method to immobilize the AgNP on metal oxide by utilizing Ag-thiolate and layered double hydroxide (LDH) as precursor and template, respectively. The layer-by-layer structure of LDH and Ag-thiolate transformed through reductive calcination to metal oxide and AgNP array. Physicochemical characterization, including powder X-ray diffraction, N2 adsorption–desorption, microscopies, and X-ray photoelectron spectroscopy, revealed that the AgNP with sufficient crystallinity and particle gap was obtained at relatively high calcination temperature, ~600 °C. UV-vis diffusion reflectance spectroscopy showed that the calcination temperature affected particle size and electronic structure of AgNP. The prepared materials were subjected to SERS tests toward 4-nitrothiophenol (4-NTP). The sample obtained at 600 °C exhibited 50 times higher substrate enhancement factor (SEF) than the one obtained at 400 °C, suggesting that the calcination temperature was a determining parameter to enhance SERS activity in current synthetic condition.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Crystal Strucutre Of Ag@ldomentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Porous Hybrids Structure between Silver Nanoparticle and Layered Double Hydroxide for Surface-Enhanced Raman Spectroscopy

Lee

Paek

2021

Nanomaterials

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Sensitive, selective and rapid detection of 4,4′-methylenedianiline by surface-enhanced Raman spectroscopy using flower-like gold-silver nanoalloy embedded nickel-cobalt layered double hydroxide composites

Huang

Zhang

et al. 2022

Sensors and Actuators B: Chemical

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Synergistic Inorganic/Inorganic Hybrid Approach for Fabricating a BTX Gas Adsorbent with High Performance and Thermal Stability

Jeong

Lee

Kweon

et al. 2023

ACS Sustainable Chem. Eng.

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Adsorption is an effective strategy for the removal of volatile organic compounds (VOCs), which are among the main sources of severe environmental and health issues, such as global warming and respiratory diseases, respectively. Although carbon-based adsorbents, such as activated carbon, are currently widely adopted as the most promising candidates for the removal of VOCs, their thermal instability and poor recyclability remain major issues. Here, we present the synthesis of the novel hybrid adsorbent, wherein a layered double hydroxide (LDH) is introduced into mesoporous graphene (MG). The inorganic LDH played a critical role in improving the thermal stability of the hybrid LDH@MG material in the adsorption–desorption performance of VOCs. Moreover, it blocked internal micropores that can irreversibly capture VOCs in the carbon struts, resulting in enhanced adsorption recyclability of the hybrid. In the toluene adsorption–desorption cycle experiments at high temperatures, the initial chemisorption capability showed only slight degradation during the three repeated cycles in the hybrid, while it decreased significantly to 30% in the rare MG adsorbent. These results suggest that the hybridization of LDH and MG can be an effective strategy to alleviate the structural and thermal instability of carbon-based absorbents when applied for practical industrial applications.

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Silver nanoplate-pillared mesoporous nano-clays for surface enhanced raman scattering

Cited by 5 publications

References 51 publications

Porous Hybrids Structure between Silver Nanoparticle and Layered Double Hydroxide for Surface-Enhanced Raman Spectroscopy

Porous Hybrids Structure between Silver Nanoparticle and Layered Double Hydroxide for Surface-Enhanced Raman Spectroscopy

Sensitive, selective and rapid detection of 4,4′-methylenedianiline by surface-enhanced Raman spectroscopy using flower-like gold-silver nanoalloy embedded nickel-cobalt layered double hydroxide composites

Synergistic Inorganic/Inorganic Hybrid Approach for Fabricating a BTX Gas Adsorbent with High Performance and Thermal Stability

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