Recent development of noble metal-based bimetallic nanoparticles for colorimetric sensing

Green synthesis of iron-doped graphene quantum dots: an efficient nanozyme for glucose sensing

“…For instance, many reported single-atom nanozymes rely on expensive noble metals such as Au and Pt as reaction sites. 25,26 These noble metals are not biodegradable and may cause adverse effects as they accumulate in living organisms. Moreover, during the synthesis process, complex techniques are often employed to prevent metal overoxidation and cluster over-aggregation, 27 which not only complicates production but also hinders large-scale manufacturing.…”

“…Moreover, during the synthesis process, complex techniques are often employed to prevent metal overoxidation and cluster over-aggregation, 27 which not only complicates production but also hinders large-scale manufacturing. 26,28 Furthermore, the heavy-metal-based materials could release toxic ions, and raise their concerns about potential toxicity in biomedical applicationss. 26–28 As a result, there is a growing interest in using more sustainable and environmentally friendly materials, such as Fe, to synthesize nanozymes.…”

“…26,28 Furthermore, the heavy-metal-based materials could release toxic ions, and raise their concerns about potential toxicity in biomedical applicationss. 26–28 As a result, there is a growing interest in using more sustainable and environmentally friendly materials, such as Fe, to synthesize nanozymes.…”

Sensitivity improvement of Au-nanoparticle-based colorimetric probes via surface decoration of carbon quantum dots

“…Recently, localized surface plasmon resonance that is mediated with noble metal nanoparticles (NPs) 8–14 has allowed the strong localization of illuminated fields around metal NP-based probes. This enables the instant display of color change that can be directly observed by the naked eye.…”