Hollow transition metal hydroxide octahedral microcages for single particle surface-enhanced Raman spectroscopy

Gao, Ming; Miao, Peng; Han, Xijiang; Sun, Cheng; Ma, Yan; Gao, Yali; Xu, Ping

doi:10.1039/c9qi00579j

Cited by 27 publications

(17 citation statements)

References 47 publications

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“…Some prototype amorphous semiconductor substrates have been studied, including amorphous TiO2 64 (Fig. 3a), ZnO 65 , Rh3S6 66 , HxMoO3 67 and metal hydroxide (M(OH)x) nanostructures 68 . The promoted SERS activities in amorphous structures are predominantly due to enhanced surface adsorption and promoted interfacial CT, resulting from abundant surface defect sites.…”

Section: Lattice Disordersmentioning

confidence: 99%

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Defect engineering in semiconductor-based SERS

2022

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Section: Lattice Disordersmentioning

confidence: 99%

“… 67 ) and metal hydroxide (M(OH) x ) nanostructures. 68 The promoted SERS activities in amorphous structures are predominantly due to enhanced surface adsorption and promoted interfacial CT, resulting from abundant surface defect sites.…”

Section: Defect Engineering Strategies For Sers-active Semiconductorsmentioning

confidence: 99%

Defect engineering in semiconductor-based SERS

2022

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“…After our reports on the remarkable SERS activity of amorphous semiconductors, several groups observed the SERS activity of amorphous nanostructures as well. [29] As an example, Li et al developed a facile method to modulate the plasmon resonance of semiconductors by using amorphous H x MoO 3 quantum dots. These amorphous H x MoO 3 quantum dots exhibited a tunable plasmon resonance from the visible to the near-infrared region of light.…”

Section: Methodsmentioning

confidence: 99%

SERS Activity of Semiconductors: Crystalline and Amorphous Nanomaterials

Wang

Guo

2019

Angewandte Chemie

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Surface‐enhanced Raman scattering (SERS) spectroscopy on semiconductors has attracted increasing attention due to its high spectral reproducibility and unique selectively to target molecules. Recently, endeavors have been made in fabricating novel SERS‐active semiconductor substrates and exploring new enhancement mechanisms to improve the sensitivity of semiconductor substrates. This Minireview explains the enhancement mechanism of the semiconductor SERS effect in a brief tutorial and summarize recent developments of novel semiconductor substrates, in particular with regard to the remarkable SERS activity of amorphous semiconductor nanomaterials. Potential applications of semiconductor SERS are also a key issue of concern. We discuss a variety of promising applications of semiconductor SERS in the fields of in situ analytical chemistry, spectroelectrochemical analysis, biological sensing, and trace detection.

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“…M(OH) x (M = Fe, Co, Ni and Zn) [147,148], Nb 2 O 5 [149]. However, for the future development of amorphous material-based SERS substrates, there are still some obstacles to be settled.…”

Section: Amorphization Treatmentmentioning

confidence: 99%

The origin of ultrasensitive SERS sensing beyond plasmonics

et al. 2021

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Plasmon-free surface-enhanced Raman scattering (SERS) substrates have attracted tremendous attention for their abundant sources, excellent chemical stability, superior biocompatibility, good signal uniformity, and unique selectivity to target molecules.Recently, researchers have made great progress in fabricating novel plasmon-free SERS substrates and exploring new enhancement strategies to improve the sensitivity of plasmon-free SERS substrates. This review summarizes the recent developments of plasmon-free SERS substrates and specially focuses on the enhancement mechanisms and the enhancement strategies. Furthermore, the promising applications of plasmon-free SERS substrates in biomedical diagnosis, metal ions and organic pollutants sensing, chemical and biochemical reactions monitoring, and photoelectric characterization are introduced. Finally, the current challenges and future research opportunities in plasmon-free SERS substrates are briefly discussed.

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Hollow transition metal hydroxide octahedral microcages for single particle surface-enhanced Raman spectroscopy

Abstract: Single M(OH)x (M = Fe, Co, Ni) hollow octahedral microcage particles are explored as novel SERS-active substrates for sensitive dye molecule detection.

Cited by 27 publications

References 47 publications

Defect engineering in semiconductor-based SERS

Defect engineering in semiconductor-based SERS

SERS Activity of Semiconductors: Crystalline and Amorphous Nanomaterials

The origin of ultrasensitive SERS sensing beyond plasmonics

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