Significant surface-enhanced Raman scattering effect of Ag-loaded iron hydroxide enabled by coordination effect between Ag and hydroxyl group

Wang, Xiaotian; Meng, Xiangyu; Yu, Jian; Wu, Jingjing; Wang, Yuening; Song, Xin; Zhang, Xu; Li, Anran; Qiu, Lin; Lin, Jie

doi:10.1039/d3qi00312d

Cited by 5 publications

(2 citation statements)

References 35 publications

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“…First, the band gap (E g ) for CoNi-LDH and Fe 0.07 (CoNi) 0.93 -LDH can be obtained through the Kubelka−Munk formula. 32 The amorphous results in a broadened band tail and surface defects, which will reduce the band gap of the semiconductor. 33,34 As shown in Figure 3c, the E g was decreased from 2.23 to 1.85 eV for Fe 0.07 (CoNi) 0.93 -LDH due the localized amorphous of The energy difference between the upper edge of the valence band and the Fermi level can be obtained from the valence band spectra (Figure 3d).…”

Section: Resultsmentioning

confidence: 99%

“…For a comprehensive understanding of the enhancement mechanism of Ag/Fe 0.07 (CoNi) 0.93 -LDH for the 4-ATP molecule, the energy band structure of Fe 0.07 (CoNi) 0.93 -LDH was analyzed. First, the band gap ( E g ) for CoNi-LDH and Fe 0.07 (CoNi) 0.93 -LDH can be obtained through the Kubelka–Munk formula . The amorphous results in a broadened band tail and surface defects, which will reduce the band gap of the semiconductor. , As shown in Figure c, the E g was decreased from 2.23 to 1.85 eV for Fe 0.07 (CoNi) 0.93 -LDH due the localized amorphous of Fe 0.07 (CoNi) 0.93 -LDH, which can be attributed to the doping of Fe 3+ .…”

Section: Resultsmentioning

confidence: 99%

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Ag-Coated Ternary Layered Double Hydroxide as a High-Performance SERS Sensor for Aldehydes

Meng,

Wang,

Song

et al. 2023

ACS Appl. Mater. Interfaces

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Volatile organic compounds (VOCs) are common environmental pollutants and important biomarkers for early diagnosis of lung cancer. However, aldehydes are difficult to detect directly due to their small Raman scattering cross-section and gaseous phase. Here, a Ag-coated ternary layered double hydroxide (LDH) was designed for the detection and identification of various aldehydes. The specific surface area of CoNi-LDH was increased by doping Fe3+, which provides abundant active sites to capture gas molecules. Furthermore, the energy band gap (E g) was decreased due to the local amorphous FeCoNi-LDH with an extended band tail, promoting the excitonic transition of Fe0.07(CoNi)0.93-LDH. In addition, the Fermi level of Ag prevented the recombination of electron–hole pairs of Fe0.07(CoNi)0.93-LDH, providing a new bridge for charge transfer between the substrate and the molecule. Ag/Fe0.07(CoNi)0.93-LDH presented excellent surface-enhanced Raman scattering (SERS) performance for aldehyde VOCs by modification with 4-aminothiophenol (4-ATP) to capture aldehydes and realized the detection of benzaldehyde (BZA) at 10 ppb. The enhancement and Raman shift of the b2 mode indicated the contribution of chemical enhancement to the SERS system, so the substrate presented good uniformity. The recycling of the SERS substrate is realized based on the reversibility of the Schiff base reaction. These results manifested that Ag/FeCoNi-LDH has a wide prospect in the application in the trace detection of aldehydes.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Ag-Coated Ternary Layered Double Hydroxide as a High-Performance SERS Sensor for Aldehydes

Meng,

Wang,

Song

et al. 2023

ACS Appl. Mater. Interfaces

Self Cite

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Innovative Applications and Perspectives of Surface‐Enhanced Raman Spectroscopy Technology in Biomedicine

Xu,

Xie,

Liu

et al. 2024

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Surface‐enhanced Raman spectroscopy (SERS) has become a revolutionary technique in the biomedical field, providing unparalleled sensitivity for the detection and characterization of biological samples. In this review, recent SERS innovations are comprehensively discussed, including advanced substrate materials, different SERS detection strategies, and multimodal approaches that combine SERS with other biotechnologies. Among them, the role of SERS in the accurate diagnosis of tumors is highlighted, which has promoted accurate molecular analysis and real‐time monitoring of treatment effects. In addition, the growing potential of SERS in the treatment of chronic diseases such as cardiovascular disease, diabetes, and neurodegenerative diseases is discussed. Moreover, the integration with microfluidic chip systems for precise single‐cell analysis is presented. To give a forward‐looking view, the key challenges faced by SERS technology are also proposed, and possible solutions to overcome these obstacles are provided.

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Plasmon-enhanced Photoresponsivity and Detectivity of Silver Nanoparticles-incorporated Nanocomposites Flexible Photodetector

Liu,

Chen,

Chang

et al. 2024

Sensors and Actuators A: Physical

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Significant surface-enhanced Raman scattering effect of Ag-loaded iron hydroxide enabled by coordination effect between Ag and hydroxyl group

Abstract: Effective monitoring of trace carcinogens in the environment and daily necessities is very important for human. Here, Ag loaded iron hydroxide (Ag/Fe(OH)3) is designed as an excellent surface-enhanced Raman scattering...

Cited by 5 publications

References 35 publications

Ag-Coated Ternary Layered Double Hydroxide as a High-Performance SERS Sensor for Aldehydes

Ag-Coated Ternary Layered Double Hydroxide as a High-Performance SERS Sensor for Aldehydes

Innovative Applications and Perspectives of Surface‐Enhanced Raman Spectroscopy Technology in Biomedicine

Plasmon-enhanced Photoresponsivity and Detectivity of Silver Nanoparticles-incorporated Nanocomposites Flexible Photodetector

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