Cation-exchange strategy for a colorimetric paper sensor: Belt-like ZnSe nanoframes toward visual determination of heavy metal ions

Dong, Ren-E; Kang, Peng; Xu, Xiaoliang; Cai, Liu-Xin; Guo, Zheng

doi:10.1016/j.snb.2020.128013

Cited by 20 publications

(9 citation statements)

References 34 publications

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“…Colorimetric detection is the primary technique applied in μPads, because color intensity can be realized easily by an ultraviolet–visible (UV–vis) spectrophotometer. Until now, it is widely applied in analysis of inorganic ions [ 105 – 114 ], biomedicals and proteins [ 115 – 122 ], nucleic acid and drugs [ 123 – 136 ], etc.…”

Section: Optical Detection Methodsmentioning

confidence: 99%

“…Colorimetric detection is the primary technique applied in μPads, because color intensity can be realized easily by an ultraviolet-visible (UV-vis) spectrophotometer. Until now, it is widely applied in analysis of inorganic ions [105][106][107][108][109][110][111][112][113][114], biomedicals and proteins [115][116][117][118][119][120][121][122], nucleic acid and drugs [123][124][125][126][127][128][129][130][131][132][133][134][135][136], etc.…”

Section: Colorimetric Detectionmentioning

confidence: 99%

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Recent Advances and Applications in Paper-Based Devices for Point-of-Care Testing

Hou

Guo

et al. 2022

J. Anal. Test.

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Point-of-care testing (POCT), as a portable and user-friendly technology, can obtain accurate test results immediately at the sampling point. Nowadays, microfluidic paper-based analysis devices (μPads) have attracted the eye of the public and accelerated the development of POCT. A variety of detection methods are combined with μPads to realize precise, rapid and sensitive POCT. This article mainly introduced the development of electrochemistry and optical detection methods on μPads for POCT and their applications on disease analysis, environmental monitoring and food control in the past 5 years. Finally, the challenges and future development prospects of μPads for POCT were discussed.

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Section: Optical Detection Methodsmentioning

confidence: 99%

Section: Colorimetric Detectionmentioning

confidence: 99%

Recent Advances and Applications in Paper-Based Devices for Point-of-Care Testing

Hou

Guo

et al. 2022

J. Anal. Test.

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show abstract

“…Representative applications of PADs and microPADs both using chromogenic/fluorogenic reagents [ 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 ] and nanostructured materials [ 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 ] for the detection of metal ions in environmental samples are shown in Table 1 .…”

Section: Detection Of Metal Ions and Anionic Species By Paper-basementioning

confidence: 99%

“…Dong et al [ 53 ] designed a colorimetric paper sensor which relies on belt-like ZnSe nanoframes consisting of numerous ZnSe nancrystals. The sensing mechanism is based on the cation-exchange characteristic of chalcogenides, allowing the detection of Ag(I), Cu(II), and Hg(II).…”

Section: Detection Of Trace Metals and Anions Using Paper-based Anmentioning

confidence: 99%

Nanomaterial-Integrated Cellulose Platforms for Optical Sensing of Trace Metals and Anionic Species in the Environment

Bendicho

Lavilla

Pena‐Pereira

et al. 2021

Sensors

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The development of disposable sensors that can be easily adapted to every analytical problem is currently a hot topic that is revolutionizing many areas of science and technology. The need for decentralized analytical measurements at real time is increasing for solving problems in areas such as environment pollution, medical diagnostic, food quality assurance, etc., requiring fast action. Despite some current limitations of these devices, such as insufficient detection capability at (ultra)trace level and risk of interferent effects due to matrix, they allow low-cost analysis, portability, low sample consumption, and fast response. In the last years, development of paper-based analytical devices has undergone a dramatic increase for on-site detection of toxic metal ions and other pollutants. Along with the great availability of cellulose substrates, the immobilization of receptors providing enhanced recognition ability, such as a variety of nanomaterials, has driven the design of novel sensing approaches. This review is aimed at describing and discussing the different possibilities arisen with the use of different nanoreceptors (e.g., plasmonic nanoparticles, quantum dots, carbon-based fluorescent nanoparticles, etc.) immobilized onto cellulose-based substrates for trace element detection, their advantages and shortcomings.

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“…These features make paper-based sensors the best candidates for adoption in developing countries. In particular, colorimetric sensors on paper strips are widely used for the determination of many metal ions, either toxic or non-toxic [15,18,19]. Among these, the analysis of Fe ions is of paramount importance because it is an essential element for plants and animals, it plays a vital role in a variety of biochemical processes, and it is one of the necessary micronutrients.…”

Section: Introductionmentioning

confidence: 99%

Compact System for Colorimetric Sensor Arrays Characterization Based on Computer Screen Photo-Assisted Technology

2021

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The detection of the spectral fingerprint of chemical sensors through the combined use of an LCD and a webcam is an alternative approach for chemical sensor characterization. This technique allows the development of more compact, cheap, and user-friendly measurement systems compared to the more classic instruments, such as spectrometers and gas chromatography systems. In the Computer Screen Photo-assisted Technique (CSPT), a display acts as a light source, and a conventional camera (e.g., a webcam) plays the role of a detector. The light from the LCD is reflected (or transmitted) by the chemical sensor, and the camera detects it. In the present contribution, we propose a compact and low-cost platform based on CSPT for the characterization of colorimetric sensor arrays. The system can provide spectral information of both reflected and transmitted light from the sample. Further, a 2.4-inch LCD and three different detector’s (a webcam, an RGB sensor, and a camera module) performances have been evaluated and discussed. The developed system includes a UDOO-based single board computer that makes it a stand-alone measurement system.

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Cation-exchange strategy for a colorimetric paper sensor: Belt-like ZnSe nanoframes toward visual determination of heavy metal ions

Cited by 20 publications

References 34 publications

Recent Advances and Applications in Paper-Based Devices for Point-of-Care Testing

Recent Advances and Applications in Paper-Based Devices for Point-of-Care Testing

Nanomaterial-Integrated Cellulose Platforms for Optical Sensing of Trace Metals and Anionic Species in the Environment

Compact System for Colorimetric Sensor Arrays Characterization Based on Computer Screen Photo-Assisted Technology

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