Fluorometric determination of mercury(II) based on dual-emission metal-organic frameworks incorporating carbon dots and gold nanoclusters

Guo, Minzhe; Chi, Jingtian; Li, Yijing; Waterhouse, Geoffrey I. N.; Ai, Shiyun; Hou, Juying; Li, Xiangyang

doi:10.1007/s00604-020-04508-z

Cited by 29 publications

(15 citation statements)

References 32 publications

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“…The Environmental Protection Agency (EPA) of the USA has set up a drinking water standard to define the maximum allowed limits of Cu 2+ , Pb 2+ , Cd 2+ and Hg 2+ as 1.3 (21 000), 0.015 (72), 0.005 (45) and 0.002 (10) ppm (nmol/L), respectively, for their high toxicity. Thus, selectively and sensitively detecting metal ions in complex environmental and biological samples has great significance, and diverse MOF/AuNCs assemblies have been developed for luminescent sensing of metal ions [ 68 , 105 – 109 ].…”

Section: Luminescence Sensingmentioning

confidence: 99%

“…By fluorescence quenching of AuNCs@UiO-66, the detection of Hg 2+ in real water samples, including tap and river water, could be successfully achieved, with the detection limit of 223 and 193 pmol/L, respectively. In another study, ratiometric fluorescence detection of Hg 2+ was realized by using CDs/AuNCs@ZIF-8, in which carbon dots (CDs) and AuNCs were co-encapsulated within ZIF-8 [ 105 ]. CDs/AuNCs@ZIF-8 inherited the remarkable fluorescence properties of AuNCs and CDs, exhibiting the fluorescence peaks at 640 nm and 440 nm, respectively.…”

Section: Luminescence Sensingmentioning

confidence: 99%

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Metal–Organic Frameworks-Mediated Assembly of Gold Nanoclusters for Sensing Applications

Wang

Tan

et al. 2022

J. Anal. Test.

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Gold nanoclusters (AuNCs) are an emerging type of ultrasmall nanomaterials possessing unique physicochemical characteristics. Metal–organic frameworks (MOFs), a singular kind of porous solid and crystalline material, have attracted tremendous attention in recent years. The combination of AuNCs and MOFs can integrate and improve the prominent properties of both components, such as high catalytic activities, tunable optical properties, good biocompatibility, surface functionality and stability, which make the composites of MOFs and AuNCs promising for sensing applications. This review systematically summarizes the recent progress on the sensing of various analytes via MOFs-mediated AuNCs assemblies based on strategies of luminescence sensing, colorimetric sensing, electrochemiluminescence sensing, and electrochemical and photoelectrochemical sensing. A brief outlook regarding the future development of MOFs-mediated AuNCs assemblies for sensing application is presented as well.

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Section: Luminescence Sensingmentioning

confidence: 99%

Section: Luminescence Sensingmentioning

confidence: 99%

Metal–Organic Frameworks-Mediated Assembly of Gold Nanoclusters for Sensing Applications

Wang

Tan

et al. 2022

J. Anal. Test.

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“…Finally, the probe has good selectivity to Hg 2 + in the range of 0-300 μM, and LOD is 0.12 nM. Guo and co-workers [71] established a dual emission fluorescent probe that encapsulated CDs and gold nanoclusters (AuNCs) into ZIF-8 to detect Hg 2 + in water (Figure 7b). The CDs/ AuNCs@ZIF-8 sensor shows fluorescence emission maxima at 440 nm (CDs) and 640 nm (AuNCs) under 360 nm excitation.…”

Section: Detection Of Ions Pollutantsmentioning

confidence: 99%

“…(b) Synthetic route of CDs/AuNCs@ZIF-8 and its ratiometric fluorescence detection mechanism for Hg 2 + . Adapted from reference [71] with permission, copyright 2018 Elsevier. constructed a recyclable MNPsRhB-CDs@ZIF-8 composites in order to detect the residual ClO À in water in time to protect our water resources (Figure 9a).…”

Section: Detection Of Ions Pollutantsmentioning

confidence: 99%

Recent Advances in the Application and Mechanism of Carbon Dots/Metal‐Organic Frameworks Hybrids in Photocatalysis and the Detection of Environmental Pollutants

Jiang

Xie

et al. 2022

Chemistry An Asian Journal

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Metal-organic frameworks (MOFs) are a class of crystalline porous materials with simple synthesis conditions, large specific surface area, structural diversity, and a wide range of interesting properties. The integration of MOFs with other materials can provide new multifunctional composites that exhibit both component properties and new characteristics. In recent years, the integration of carbon dots (CDs) into MOFs to form composites has shown improved optical properties and fascinating new characteristics. This review focuses on the design and synthesis strategies of CDs@MOFs composites (including pore-confined synthesis, in situ encapsulation, post-synthesis modification and impregnation method) and their recent research progress in photocatalysis and detection of environmental pollutants. Both the achievements and problems are evaluated and proposed, and the opportunities and challenges of CDs@MOF composite are discussed.

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“…The importance of developing methods to detect mercury (II) ion (Hg 2+ ) is evident from its environmental abundance and effects on the CNS and endocrine system. Early design of CNDs allowed Hg 2+ did not allow for sensing in anything but water, which excluded any buffers or electrolytes [43,[103][104][105][106][107][108][109][110]. Hg 2+ nanosensing was further developed by Gao et al with a nanohybrid of red-emission QDs and blue-emission CNDs.…”

Section: Dna Detectionmentioning

confidence: 99%

Recent Advances in Carbon Nanodots: A Promising Nanomaterial for Biomedical Applications

Khan

Dunphy

Anike

et al. 2021

IJMS

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Carbon nanodots (CNDs) are an emerging class of nanomaterials and have generated much interest in the field of biomedicine by way of unique properties, such as superior biocompatibility, stability, excellent photoluminescence, simple green synthesis, and easy surface modification. CNDs have been featured in a host of applications, including bioimaging, biosensing, and therapy. In this review, we summarize the latest research progress of CNDs and discuss key advances in our comprehension of CNDs and their potential as biomedical tools. We highlighted the recent developments in the understanding of the functional tailoring of CNDs by modifying dopants and surface molecules, which have yielded a deeper understanding of their antioxidant behavior and mechanisms of action. The increasing amount of in vitro research regarding CNDs has also spawned interest in in vivo practices. Chief among them, we discuss the emergence of research analyzing CNDs as useful therapeutic agents in various disease states. Each subject is debated with reflection on future studies that may further our grasp of CNDs.

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Fluorometric determination of mercury(II) based on dual-emission metal-organic frameworks incorporating carbon dots and gold nanoclusters

Cited by 29 publications

References 32 publications

Metal–Organic Frameworks-Mediated Assembly of Gold Nanoclusters for Sensing Applications

Metal–Organic Frameworks-Mediated Assembly of Gold Nanoclusters for Sensing Applications

Recent Advances in the Application and Mechanism of Carbon Dots/Metal‐Organic Frameworks Hybrids in Photocatalysis and the Detection of Environmental Pollutants

Recent Advances in Carbon Nanodots: A Promising Nanomaterial for Biomedical Applications

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