Versatile and high performance in-paper flexible SERS chips for simple and in-situ detection of methylene blue in river water and thiram on apple skin

Doan, Mai Quan; Nguyen, Ha Anh; Dinh, Ngo Xuan; Thủy, Nguyễn Thị Thu; Huy, Tran Quang; Thanh, Pham Cong; Pham, Anh-Tuan; Le, Anh‐Tuan

doi:10.1016/j.talanta.2022.124114

Cited by 25 publications

(13 citation statements)

References 36 publications

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“…Consequently, CV is not available to form chemical bonds to SERS substrates. However, its positive net charge still allows it to be easily adsorbed onto citrate-coated e-AgNPs, whose ζ potential was reported to be −52 mV in our previous study, 31 resulting in sharp peaks in the SERS spectra. Fig.…”

Section: Resultsmentioning

confidence: 90%

Ultrasensitive detection of crystal violet using a molybdenum sulfide–silver nanostructure-based sensing platform: roles of the adsorbing semiconductor in SERS signal enhancement

Pham,

Nguyet Nga,

Mai

et al. 2023

Anal. Methods

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Section: Resultsmentioning

confidence: 90%

Ultrasensitive detection of crystal violet using a molybdenum sulfide–silver nanostructure-based sensing platform: roles of the adsorbing semiconductor in SERS signal enhancement

Pham,

Nguyet Nga,

Mai

et al. 2023

Anal. Methods

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“…Subsequently, the concentration of OTC in the samples was calculated based on the fluorescence intensity ratio I 576 /I 436 using the equation in Figure d. The recovery was calculated as r e c o v e r y ( % ) = normals normalp normali normalk normale normald normala normaln normala normall normaly normalt normale normalc normalo normaln normalc normale normalt normalr normala normalt normali normalo normaln ( M ) normalc normala normall normalc normalu normall normala normalt normale normald normala normaln normala normall normaly normalt normale normalc normalo normaln normalc normale normalt normalr normala normalt normali normalo normaln ( M ) × 100 % …”

Section: Resultsmentioning

confidence: 99%

“…Subsequently, the concentration of OTC in the samples was calculated based on the fluorescence intensity ratio I 576 /I 436 using the equation in Figure d. The recovery was calculated as …”

Section: Resultsmentioning

confidence: 99%

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Highly Sensitive Ratiometric Fluorescent Flexible Sensor Based on the RhB@ZIF-8@PVDF Mixed-Matrix Membrane for Broad-Spectrum Antibiotic Detection

Xu,

Tang,

Jiang

et al. 2023

ACS Appl. Mater. Interfaces

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Antibiotics play an essential role in the treatment of various diseases. However, the overuse of antibiotics has led to the pollution of water bodies and food safety, affecting human health. Herein, we report a dual-emission MOF-based flexible sensor for the detection of antibiotics in water, which was prepared by first encapsulating rhodamine B (RhB) by a zeolite imidazolium ester skeleton (ZIF-8) and then blending it with polyvinylidene difluoride (PVDF). The luminescent properties, structural tunability, and flexible porosity of the MOF-based composites were combined with the processability and flexibility of polymers to prepare luminescent membranes. The sensor is capable of dual-emission ratiometric fluorescence sensing of nitrofurantoin (NFT) and oxytetracycline (OTC), exhibiting sensitive detection of fluorescence burst and fluorescence enhancement, respectively, with detection limits of 0.012 μM and 8.9 nM. With the advantages of visual detection, high sensitivity, short detection time, and simplicity, the highly sensitive ratiometric fluorescent flexible sensor has great potential for detecting antibiotics in an aqueous environment. It will further stimulate interest in luminescent MOF-based mixed matrix membranes and their sensing applications.

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“…Kong et al, fabricated silver-decorated cotton swabs by chemical synthesis method to detect R6G, TBZ, and thiram and showed their detection limit to be 1 ng/cm 2 (Kong et al 2020). Mai et al, fabricated paper based flexible SERS substrate by immersing filter paper in electrochemically synthesized AgNPs for 24 hours and used it for the detection of MB in river water and thiram in apple skin (Mai et al 2023).…”

Section: Sers Activity Mainly Depends On Electromagnetic (Em) and Che...mentioning

confidence: 99%

Green synthesized Ag/rGO embedded flexible cotton SERS substrate for detection of methylene blue

Gokulakrishnan

Sekhar

Kamakshi

2023

Preprint

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Ag/rGO nanocomposite SERS substrates are widely used for the detection of contaminations in water and food adulterants. In this work, we prosed a novel green route to synthesize Ag/rGO nanocomposite for SERS-based detection of methylene blue (MB). Ag/rGO nanocomposite is synthesized by simultaneous reduction of AgNO3 and GO with the leaf extract of Jasmine fluminense. Further, the flexible SERS substrate is fabricated by directly coating the synthesized Ag/rGO nanocomposite on cotton fabric and used for SERS-based detection of MB. The SERS studies on MB show a linear response of 0.97 over a wide detection range of 10− 3 to 10− 9 M with a minimum detection limit of 10− 9 M. The enhancement factor for MB at a concentration of 10− 9 M is 5.33 × 105 with a high signal-to-noise ratio of 31.69. This study emphasizes the potential of green synthesized Ag/rGO embedded flexible cotton SERS substrate for the traceable fingerprint detection of MB.

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Versatile and high performance in-paper flexible SERS chips for simple and in-situ detection of methylene blue in river water and thiram on apple skin

Cited by 25 publications

References 36 publications

Ultrasensitive detection of crystal violet using a molybdenum sulfide–silver nanostructure-based sensing platform: roles of the adsorbing semiconductor in SERS signal enhancement

Ultrasensitive detection of crystal violet using a molybdenum sulfide–silver nanostructure-based sensing platform: roles of the adsorbing semiconductor in SERS signal enhancement

Highly Sensitive Ratiometric Fluorescent Flexible Sensor Based on the RhB@ZIF-8@PVDF Mixed-Matrix Membrane for Broad-Spectrum Antibiotic Detection

Green synthesized Ag/rGO embedded flexible cotton SERS substrate for detection of methylene blue

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