pH-controlled sensitive and selective detection of Cr(iii) and Mn(ii) by using clove (S. aromaticum) reduced and stabilized silver nanospheres

Abstract

The colorimetric detection of Cr(iii) and Mn(ii) ions based on silver nanospheres (SNSs).

Consistent microplastic ingestion by deep-sea invertebrates over the last four decades (1976–2015), a study from the North East Atlantic

“…Biofilm formation occurs rapidly in the environment (Lobelle and Cunliffe, 2011;Rummel et al, 2017), altering particle density and hydrophobicity and in turn increasing the rate of sinking. Microplastics may form aggregates with phytoplankton (Long et al, 2015) or marine snow (Porter et al, 2018;Zhao et al, 2016), flocculate and adhere to transparent exopolymers (Engel, 2004;Passow et al, 2001;Summers et al, 2018) or be incorporated into faecal pellets (Cole et al, 2016;Katija et al, 2017). In most cases these processes act to reduce the buoyancy of microplastics and thus increase the sinking rate, redistributing microplastics from surface waters to the ocean floor.…”

Label-Free Colorimetric Nanosensor for the Selective On-Site Detection of Aqueous Al3+

“…Nanoparticles, on aggregation, display a visual color change which is useful for analysis without complex instruments . On the basis of aggregation mechanism, our research team reported many sensors by using nanoparticles and nanocomposites. − Recently, we reported a selective and sensitive sensor for the detection of Cr 3+ and Mn 2+ ions, using green synthesized nanoparticles . There are many other reports on the colorimetric detection of metal ions. , However, to date, very limited reports are available for the detection of Al 3+ based on aggregation of AuNPs − and none for the colorimetric detection of Al 3+ by AgNPs in an aqueous medium, to the best of our knowledge.…”

“…18−20 Recently, we reported a selective and sensitive sensor for the detection of Cr 3+ and Mn 2+ ions, using green synthesized nanoparticles. 21 There are many other reports on the colorimetric detection of metal ions. 22,23 However, to date, very limited reports are available for the detection of Al 3+ based on aggregation of AuNPs 24−27 and none for the colorimetric detection of Al 3+ by AgNPs in an aqueous medium, to the best of our knowledge.…”

Synthesis and Characterization of Grewia asiatica-Stabilized Silver Nanoparticle as a Selective Probe for Al+3 in Tap, Deionized, Industrial Waste Water and Human Blood Plasma

“…Nanoparticles of noble metals possess optical, chemical, electrochemical, and mechanical properties that make them ideal for various applications such as biocatalysis cosmetics, coating, and anticancer [9]. Recent developments such as paper-based analytical devices (PAD), colorimetric assays, quantumdots-based photoelectrochemical immune assays, magnetic bead-centered reverse colorimetric sensors, MnO 2 nanofakes with enzyme torrent intensifcation for colorimetric immunoassay, and Fenton reaction-centered colorimetric immunoassay have enabled colorimetric recognition in aqueous systems for metal ions [10][11][12][13][14][15][16][17][18][19][20][21][22]. Te accumulation of NPs induced by the target analyte is central to a graphic color alteration.…”