Highly sensitive and selective SERS substrates with 3D hot spot buildings for rapid mercury ion detection

Li, Jingya; Wei, Peng; Wang, An; Wan, Mingjie; Zhou, Yiming; Zhang, Xia‐Guang; Jin, Shangzhong; Zhang, Fan‐Li

doi:10.1039/d3an00827d

Cited by 10 publications

(3 citation statements)

References 40 publications

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“…For instance, in biomedical research, SERS has been applied for label-free detection of biomolecules, − imaging of cellular processes, − and even in vivo diagnostics . Additionally, SERS has also made significant strides in environmental monitoring, finding applications in the detection of pollutants, contaminants, and hazardous substances. − Its high sensitivity and specificity make it a powerful tool for rapid and accurate analysis in environmental science and related disciplines.…”

Section: Introductionmentioning

confidence: 99%

Quantitative Analysis of Trace Analytes with Highly Sensitive SERS Tags on Hydrophobic Interface

Huang,

Wang,

Wang

et al. 2024

ACS Appl. Mater. Interfaces

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Surface-enhanced Raman scattering (SERS) presents a promising avenue for trace matter detection by using plasmonic nanostructures. To tackle the challenges of quantitatively analyzing trace substances in SERS, such as poor enrichment efficiency and signal reproducibility, this study proposes a novel approach using Au@internal standard@Au nanospheres (Au@IS@Au NSs) for realizing the high sensitivity and stability in SERS substrates. To verify the feasibility and stability of the SERS performances, the SERS substrates have exhibited exceptional sensitivity for detecting methyl blue molecules in aqueous solutions within the concentration range from 10 −4 M to 10 −13 M. Additionally, this strategy also provides a feasible way of quantitative detection of antibiotic in the range of 10 −4 M to 10 −10 M. Trace antibiotic residue on the surface of shrimp in aquaculture waters was successfully conducted, achieving a remarkably low detection limit of 10 −9 M. The innovative approach has great potential for the rapid and quantitative detection of trace substances, which marks a noteworthy step forward in environmental detection and analytical methods by SERS.

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Section: Introductionmentioning

confidence: 99%

Quantitative Analysis of Trace Analytes with Highly Sensitive SERS Tags on Hydrophobic Interface

Huang,

Wang,

Wang

et al. 2024

ACS Appl. Mater. Interfaces

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“…[3][4][5] Mercury ions cannot be eliminated from the body through their metabolism and may cause damage to the immune system, nervous system, heart, and kidneys. 6,7 According to the World Health Organization, the maximum concentration limit of Hg 2+ in drinking water is 30 nM. 8 Therefore, the identication and determination of Hg 2+ in water is extremely crucial for evaluating its toxicity and health risk.…”

Section: Introductionmentioning

confidence: 99%

Colorimetric detection of Hg²⁺ based on the enhanced oxidase-mimic activity of CuO/Au@Cu₃(BTC)₂ triggered by Hg²⁺

Yang,

Wang,

Xue

et al. 2024

RSC Adv.

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“…Several quantitative ways have been widely used for Hg 2+ detection since developed, such as atomic absorption/emission spectroscopy, cold vapor atomic absorption spectroscopy, gas chromatography analysis, inductively coupled plasma mass spectrometry (ICP–MS), colorimetry, fluorescence sensing, electrochemical detection, and so forth. − Even though these methods are successful in selectivity and sensitivity to detect Hg 2+ , most techniques require complex prelab work, expensive equipment, and well-trained lab operators. To overcome these issues, we developed a straightforward, fast, simple, and efficient way to detect Hg 2+ .…”

Section: Introductionmentioning

confidence: 99%

Colorimetric Sensing Platform for Detecting Mercury Ions Based on Self-Assembly of a Two-Dimensional Au Nanoparticle Layer

Liu,

Shen,

et al. 2023

ACS Appl. Nano Mater.

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Mercury poses a significant threat to human health and the environment, and the United States Environmental Protection Agency has set a drinking water threshold of mercury (10 nM). Therefore, developing an environmentally friendly, on-site mercury ion (Hg2+) detection is highly desirable. Based on the synergetic catalysis of gold nanoparticles (AuNPs) and mercury, a simple and ultrasensitive colorimetric method for the determination of Hg2+ was established. The innovation of this work is to propose a strategy based on the self-assembly of two-dimensional (2D) AuNPs for colorimetric detection of Hg2+. The AuNPs are self-assembled into a densely arranged 2D AuNP layer at the liquid/liquid interface between dimethyl carbonate and water, which converts from the disordered distribution of AuNPs in 3D space to an orderly 2D AuNP layer distribution. This avoids the shortcomings of poor repeatability and weak detection signals caused by the uneven sampling before and greatly plays the catalytic role of each AuNP. In this work, gold amalgam catalyzes colorless 3,3′,5,5′-tetramethylbenzidine (TMB) and hydrogen peroxide (H2O2) to yield blue-green oxidized TMB (oxTMB), realizing the colorimetric quantitative detection of Hg2+ in water systems. In this process, the formation of gold amalgam greatly improves the catalytic ability of AuNPs, and the detection limit of mercury ions is as low as 0.021 nM. The practical application of this sensor in the determination of Hg2+ in tap water samples has also been successfully verified, providing an effective method for environmental monitoring.

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Highly sensitive and selective SERS substrates with 3D hot spot buildings for rapid mercury ion detection

Abstract: Heavy metal ions, over-emitted from industrial production pose a major threat to the ecological environment and human beings. Among the present detection technologies, it remains a challenge to achieve rapid...

Cited by 10 publications

References 40 publications

Quantitative Analysis of Trace Analytes with Highly Sensitive SERS Tags on Hydrophobic Interface

Quantitative Analysis of Trace Analytes with Highly Sensitive SERS Tags on Hydrophobic Interface

Colorimetric detection of Hg²⁺ based on the enhanced oxidase-mimic activity of CuO/Au@Cu₃(BTC)₂ triggered by Hg²⁺

Colorimetric Sensing Platform for Detecting Mercury Ions Based on Self-Assembly of a Two-Dimensional Au Nanoparticle Layer

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Highly sensitive and selective SERS substrates with 3D hot spot buildings for rapid mercury ion detection

Abstract: Heavy metal ions, over-emitted from industrial production pose a major threat to the ecological environment and human beings. Among the present detection technologies, it remains a challenge to achieve rapid...

Cited by 10 publications

References 40 publications

Quantitative Analysis of Trace Analytes with Highly Sensitive SERS Tags on Hydrophobic Interface

Quantitative Analysis of Trace Analytes with Highly Sensitive SERS Tags on Hydrophobic Interface

Colorimetric detection of Hg2+ based on the enhanced oxidase-mimic activity of CuO/Au@Cu3(BTC)2 triggered by Hg2+

Colorimetric Sensing Platform for Detecting Mercury Ions Based on Self-Assembly of a Two-Dimensional Au Nanoparticle Layer

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Colorimetric detection of Hg²⁺ based on the enhanced oxidase-mimic activity of CuO/Au@Cu₃(BTC)₂ triggered by Hg²⁺