2016
DOI: 10.1021/acssensors.5b00241
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Ultrasensitive Mercury Ion Detection Using DNA-Functionalized Molybdenum Disulfide Nanosheet/Gold Nanoparticle Hybrid Field-Effect Transistor Device

Abstract: Mercury, one of the most harmful pollutants in water, has a significant negative impact on human health. The molybdenum disulfide (MoS2) nanosheet, due to its unique electronic properties, is a promising candidate for high-performance sensing materials. Here, we report a DNA-functionalized MoS2 nanosheet/gold nanoparticle hybrid field-effect transistor (FET) sensor for the ultrasensitive detection of Hg2+ in an aqueous environment. Specific DNA was used in the hybrid structure as the capture probe for the labe… Show more

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Cited by 112 publications
(61 citation statements)
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“…The sensitivity of the probes was found to be comparable (Jeevika and Shankaran 2016) or one order better (Ma et al 2016;Rithesh Raj et al 2016) compared to the recently developed various nanoanalytical methods. Although the sensitivity was observed to be relatively less compared to the electrochemical sensor, this relies on sensor matrices consisting of sensitive and costly DNA/imprinted polymer/ other complex nanohybrid structures (Zhou et al 2016;Bahrami et al 2015), which limit their field deployability. In addition, the present approach offers the advantages of shorter assay time, low cost, user-friendliness as it does not require any pre-treatment or additional reagents during the assay.…”
Section: Mechanism Of Hg 21 Sensingmentioning
confidence: 99%
“…The sensitivity of the probes was found to be comparable (Jeevika and Shankaran 2016) or one order better (Ma et al 2016;Rithesh Raj et al 2016) compared to the recently developed various nanoanalytical methods. Although the sensitivity was observed to be relatively less compared to the electrochemical sensor, this relies on sensor matrices consisting of sensitive and costly DNA/imprinted polymer/ other complex nanohybrid structures (Zhou et al 2016;Bahrami et al 2015), which limit their field deployability. In addition, the present approach offers the advantages of shorter assay time, low cost, user-friendliness as it does not require any pre-treatment or additional reagents during the assay.…”
Section: Mechanism Of Hg 21 Sensingmentioning
confidence: 99%
“…Compared with the previous works about Hg 2+ detection based on DNA3738394041424344 (Table 2) and/or rhodamine derivatives4546, the proposed method is much simpler, the designed ssDNA probe doesn’t require fluorescent labelling and all the detection processes of Hg 2+ can be accomplished at RT within 1 min in one step without additional incubation. As can be seen, the developed method avoids a time-consuming derivatization step, especially compared with surface-enhanced Raman spectroscopy40, chemiluminescence detection44 and fluorescent chemodosimeter based on the rhodamine spirolactam derivative4546, etc.…”
Section: Discussionmentioning
confidence: 99%
“…[10][11][12][13] Excitingly, the aptamer sensors could detect not only biological molecules, but also metal ions , and Zn 2+ . [14][15][16][17] For example, Cui et al 18 presented an efficient electrochemical sensor for Pb 2+ detection using functionalized iron-porphyrinic metal-organic framework as probe. Meanwhile, a variety of aptamer biosensors have been fabricated based on the chelation between Hg 2+ and thymine (T).…”
Section: +mentioning
confidence: 99%