Colorimetric Detection of Copper Ions Based on Surface Modification of Silver/Platinum Cluster Nanozyme

Wu, Liangliang; Qian, Zhijuan; Xie, Zhengjun; Zhang, Yingying; Peng, Chifang

doi:10.1016/s1872-2040(17)61004-1

Cited by 31 publications

(3 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nanozymes, as a collection of nanomaterials with enzyme-like activities, have been on the cutting edge in the field of biosensors and used for signal generation and amplification in an enzyme-mimicking catalytic manner. − Because of the sensitive colorimetric reactions that can be read by the naked eye, peroxidase (POD) and oxidase (OD) mimics such as noble metal nanomaterials have exhibited great potential in the detection of inorganic ions, mycotoxins, and bacterial contamination in aquatic environments. − Via the cooperation of Hg 2+ -mediated surface chemistry with catalytic activities of noble metal nanostructures, many high-performance colorimetric mercury sensors based on the Hg 2+ -enhanced or -inhibited catalysis of noble metal (Au, Ag, Pt, Pd, etc.) nanozymes have been developed. − Compared with traditional morphological approaches, ,, such nanozyme detection techniques involve accurately controlling catalytic colored reactions by Hg 2+ ions and exhibit excellent detection sensitivity, specificity, and anti-interference ability for Hg 2+ detection in complicated systems.…”

Section: Introductionmentioning

confidence: 99%

Portable Colorimetric Detection of Mercury(II) Based on a Non-Noble Metal Nanozyme with Tunable Activity

et al. 2019

View full text Add to dashboard Cite

The nanozyme-based strategy is currently one of the frontiers in the detection of toxic heavy metal ions. However, the utilization of noble metal free nanozymes to construct an economically and environmentally sustainable methodology remains largely unknown. Here, chitosan-functionalized molybdenum(IV) selenide nanosheets (CS-MoSe 2 NS), greenly synthesized by an ionic liquid-assisted grinding method, were exploited for the colorimetric sensing of mercury ions (Hg 2+ ). The sensing principle was based on the activating effect of Hg 2+ on CS-MoSe 2 NS nanozyme activities, triggered by the in situ reduction of chitosan-captured Hg 2+ ions on a MoSe 2 NS surface. Using 3,3′,5,5′-tetramethylbenzidine (TMB) as a colorimetric indicator, the concentrations of activator-like Hg 2+ ions could be quantitatively and selectively monitored, reaching a limit of detection of 3.5 nM with the ultraviolet−visible spectrophotometer. In addition, the integration system of CS-MoSe 2 NS with a smartphone achieved a portable detection limit as low as 8.4 nM Hg 2+ within 15 min and showed high specificity and anti-interfering ability over other ions and great practicability in real water and serum samples. The eco-friendly properties of such sensing system were also confirmed. This work emphasizes the rational portable assembly of biocompatible nanozymes like CS-MoSe 2 NS for the field detection of Hg 2+ in food, biological, and environmental samples.

show abstract

Section: Introductionmentioning

confidence: 99%

Portable Colorimetric Detection of Mercury(II) Based on a Non-Noble Metal Nanozyme with Tunable Activity

et al. 2019

View full text Add to dashboard Cite

show abstract

“…This offers a promising avenue for the application of NMNCs in optical sensing. The inclusion of Pt enhances the catalytic activity of monometallic nanoclusters; consequently, Au/PtNCs and Ag/PtNCs are frequently employed in colorimetric sensing (Bagheri pebdeni & Hosseini, 2020; Wu et al., 2017). However, relatively limited research has been conducted on the synthesis and sensing of bimetallic nanoclusters.…”

Section: Applications In the Detection Of Food Contaminantsmentioning

confidence: 99%

Optical nanosensors based on noble metal nanoclusters for detecting food contaminants: A review

Pang,

Pi,

Zhao

et al. 2024

Comp Rev Food Sci Food Safe

View full text Add to dashboard Cite

Food contaminants present a significant threat to public health. In response to escalating global concerns regarding food safety, there is a growing demand for straightforward, rapid, and sensitive detection technologies. Noble metal nanoclusters (NMNCs) have garnered considerable attention due to their superior attributes compared to other optical materials. These attributes include high catalytic activity, excellent biocompatibility, and outstanding photoluminescence properties. These features render NMNCs promising candidates for crafting nanosensors for food contaminant detection, offering the potential for the development of uncomplicated, swift, sensitive, user‐friendly, and cost‐effective detection approaches. This review investigates optical nanosensors based on NMNCs, including the synthesis methodologies of NMNCs, sensing strategies, and their applications in detecting food contaminants. Furthermore, it involves a comparative assessment of the applications of NMNCs in optical sensing and their performance. Ultimately, this paper imparts fresh perspectives on the forthcoming challenges. Hitherto, optical (particularly fluorescent) nanosensors founded on NMNCs have demonstrated exceptional sensing capabilities in the realm of food contaminant detection. To enhance sensing performance, future research should prioritize atomically precise NMNCs synthesis, augmentation of catalytic activity and optical properties, development of high‐throughput and multimode sensing, integration of NMNCs with microfluidic devices, and the optimization of NMNCs storage, shelf life, and transportation conditions.

show abstract

“…[ 82 ] However, some studies used non‐functionalized Ag NPs to show that unfolded ssDNA has a high binding affinity towards them, but dsDNA does not. [ 83–85 ] These studies have opened up new pathways for further research to be conducted using free‐standing Ag NPs.…”

Section: Catalytic Properties Of Ag Npsmentioning

confidence: 99%

Recent Advances in Silver nanozymes: Concept, Mechanism, and Applications in Detection

Mishra

Abdal‐hay

Rather

et al. 2022

Adv Materials Inter

View full text Add to dashboard Cite

physicochemical properties that are entirely different from those of their bulk counterparts. They have been exploited vigorously for numerous applications, including in medical and nonmedical fields. However, one must not realize it to be a novel technology, as its roots can be traced centuries ago. For instance, copper and silver (Ag) NPs can be dated back to the 9 th century, when they were used to shine the ceramic artifacts. [1] One of the earlier and renowned examples is the Lycurgus cup, made by the Romans in the 4 th century using Au-Ag alloy NPs to produce greenish-red color. [2] Even though the use of NPs could be found in many such old works of literature; their real potential was not completely understood until 1959, when Richard Feynman delivered the renowned lecture "There's Plenty of Room at the Bottom: An Invitation to Enter a New Field of Physics. [3] This brought in a stream of exceptional studies, and researchers were able to assign quantum size effects as the reason for a change of properties when moving from bulk to nano regime. As things became more and more precise, nanomaterials began to find their extensive role in varied applications. One of the significant applications was their role as enzyme mimetics due to their excellent catalytic properties.The metabolic reactions in our body are catalyzed by the protein molecules called enzymes. It was James B Sumner who, in 1926, established the first enzyme, urease, to be a protein, which won him a Nobel Prize for this discovery in 1946. [4] All the enzymes have been considered protein molecules ever since. However, due to their high production cost and rapid denaturation under variable pH and temperature settings, they have limited their industrial applications. [5] Therefore, a need was felt to develop enzyme mimicking materials, more precisely termed "artificial enzymes" by Robert Breslow. [6] These catalytically active molecules can be anything from polymers, cyclodextrins to supramolecules and dendrimers, showing enzyme-like activity. [7][8][9][10] Recently, the discovery of dismutaselike activity of fullerene derivatives [11,12] and peroxidase-mimicking catalysis of Fe 3 O 4 NPs [13,14] enunciated the promising career of NPs in the field of biomimetics. The importance and broad prospect of nanozymes can be understood in Figure 1. This shows the increasing number of publications each year on nanozymes. These nanozymes have been majorly used Natural enzymes accelerate substrate-specific reactions making them of exquisite interest for various applications. However, their appeal is lost in a practical setting due to low stability and high preparation expenses. This is the primary reason behind the flourishing in the research of nanozyme, i.e., artificial enzymes, in the past decade. Their unique physicochemical properties make them a promising candidate for various applications, especially in diagnostics and detection. They possess an enzyme-like activity and can overcome the drawbacks of natural protein-based enzymes. Nanozymes are nanomateri...

show abstract

Colorimetric Detection of Copper Ions Based on Surface Modification of Silver/Platinum Cluster Nanozyme

Cited by 31 publications

References 31 publications

Portable Colorimetric Detection of Mercury(II) Based on a Non-Noble Metal Nanozyme with Tunable Activity

Portable Colorimetric Detection of Mercury(II) Based on a Non-Noble Metal Nanozyme with Tunable Activity

Optical nanosensors based on noble metal nanoclusters for detecting food contaminants: A review

Recent Advances in Silver nanozymes: Concept, Mechanism, and Applications in Detection

Contact Info

Product

Resources

About