N,S-GQDs mixed with CdTe quantum dots for ratiometric fluorescence visual detection and quantitative analysis of malachite green in fish

Facile fabrication of Ag@C@C8 nanoparticles as a SERS substrate and their environmental applications

“…To evaluate the recovery rate, fish water samples were prepared with three different concentrations (1 μM, 0.5 μM, and 0.1 μM), which covered the range of environmentally relevant concentration levels as well as concentrations that are hazardous to human health (0.2–0.5 mg L −1 , equivalent to 0.54–1.35 μM). 29–32 The recovery rates for all measured water samples ranged between 90% and 110%. These results indicate that Ag@C@C8 nanoparticles can be employed to detect malachite green in real-world water samples.…”

The construction of dual-emissive ratiometric fluorescent probes based on fluorescent nanoparticles for the detection of metal ions and small molecules

“…67 The target can also induce the quenching of two mixed FNPs with different sensitivity. [68][69][70] For instance, Shi's group 69 mixed blue emission MoS 2 QDs with CdTe QDs for the detection of TCs. With the addition of TCs, both the emission of the MoS 2 QDs and CdTe QDs was quenched by PET, while the fluorescence of CdTe QDs was quenched more obvious than MoS 2 QDs.…”

A recyclable Eu3+-functionalized dual-emissive metal–organic framework for portable, rapid detection and efficient removal of malachite green

“…13 However, their high costs, complicated pretreatment procedures, time-consuming processes, poor electrocatalytic activity, and the requirement of sophisticated instrumentation and skilled operators highly limit their applications. [14][15][16] On the other hand, fluorescence analytical methods have gained much attention due to their numerous merits, 17,18 including high selectivity and sensitivity, rapid processes, easy operation, and particularly the possibility to be read by the naked eye under a simple ultraviolet (UV) lamp. 19,20 Recently, several fluorescence sensors based on carbon dots and CdTe quantum dots have been employed for monitoring MG; 21,22 however, portable, visual, and rapid fluorescence assays for MG are still limited.…”