Visual detection of trace copper ions based on copper-catalyzed reaction of ascorbic acid with oxygen

Nuclear fast red‐based colorimetric sensors for sensitive and selective detection of Ag ions

“…In recent years, colorimetric sensing has drawn increasing attention to decrease experimental cost, simplify the sensing process and determine the target concentration visually. This method has been used for many kinds of target detection with satisfactory results . Significant advances have been made in the development of colorimetric sensors for Ag + detection, however, there is still a need to set up a convenient colorimetric method for Ag + that has a wide detection range, low determination limit, as well as high selectivity.…”