Tailor-made porous polymer and silica monolithic designs as probe anchoring templates for the solid-state naked eye sensing and preconcentration of hexavalent chromium

Chromoionophoric probe‐anchored mesoporous silica nanospheres for rapid and reliable naked‐eye detection of Ni(II) ions in petroleum products and removal from electroplating wastewater

“…The solid‐state CPAMHP sensor is reusable over repeated cycles, making it a promising candidate for industrial applications. Overall, the results of this study highlight the potential of MSNs and CPAMHP as a solid‐state chemosensor for the efficient identification of Ni(II) ions in petroleum products and removal of Ni(II) ions from electroplating wastewater with efficiency up to 96.8% as the proposed sensor has excellent advantages such as the fast response time, stability over time, high selectivity and reusability and its usages in different applications 46‐54 …”

“…In this study, the surface of the mesoporous silica nanospheres (MSNs) was utilized and it showed promising results for detecting petroleum products and removing Ni(II) ions from electroplating wastewater. The high surface area and interconnected platform of mesoporous networks in the silica nanospheres allow for the effective incorporation of the organic chromophore molecules onto the nanosphere base, resulting in an efficient solid‐state ocular chemosensor (CPAMHP sensor) for Ni(II) detection and removal 37‐58 . To achieve high‐performance ion‐sensing effectiveness for ultra‐trace concentrations of Ni(II) ions recognition in the oil samples and to maximize the adsorption capacity and removal of nickel ions from the electroplating wastewater samples, experimental parameters including solution pH, target ion concentration, sensor amount, and foreign ions interference were optimized.…”

An ion imprinting technology-assisted rotational microfluidic hybrid chip for the fluorescence detection of hexavalent chromium ions

“…33 Besides, the sensitivity of the analytical method is closely related to the sensing mechanism and material. 34,35,[38][39][40] Obviously, ion imprinting technology is conducive to an improved analytical performance. 36,37,41 On the whole, the performance of the developed ion imprinting technology-assisted rotational microfluidic hybrid chip is comparable with that of previously reported sensors with user friendliness.…”

Colorimetric Sensor for Cr(VI) Ion Detection in Tap Water Using a Combination of AuNPs and AgNPs

“…Cr­(VI) can easily contaminate water by forming various highly soluble complexes including chromic acid, chromates, polychromates, and dichromates, which elevate the problem of environmental water pollution . The World Health Organization (WHO) and Environmental Protection Agency (EPA) reported the maximum contamination level of Cr­(VI) at about 0.01 ppm (0.2 μM) in drinking water . Moreover, the acceptable total chromium contents in drinking water issued by WHO and EPA were about 0.1 and 0.05 ppm, respectively .…”