Preparation, characterization and oxygen sensing properties of luminescent carbon dots assembled mesoporous silica microspheres

Wang, Li; Zhang, Haoran; Zhou, Xiaohua; Liu, Yingliang; Lei, Bingfu

doi:10.1016/j.jcis.2016.06.026

Cited by 38 publications

(21 citation statements)

References 30 publications

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“…CD-HMSMs have higher quenching response than CD-MSMs due to their higher crystallinity and specific surface area, ordered cylindrical pores in the shell and larger pore volume for flow of target gas molecules but had a longer response and recovery time compared to CD-MSMs. 92 Luminescence quenching of (7%) CDs/SBA-15 in homogeneous media exhibited a non-linear dependence due to different adsorption sites as shown in Fig. 13b and is explained by several models.…”

Section: Sensors and Diagnosticsmentioning

confidence: 92%

Recent development in carbon dot-based gas sensors

Swathilakshmi

Anandhan

2022

Sens. Diagn.

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Section: Sensors and Diagnosticsmentioning

confidence: 92%

Recent development in carbon dot-based gas sensors

Swathilakshmi

Anandhan

2022

Sens. Diagn.

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“…In addition to the known application value in the field of medical drug loading, it also has important application prospects in the field of loading phosphors. Li Wang et al [68] mixed up CDs with hollow mesoporous silica microspheres with good photochemical stability which can be used for oxygen detection in the whole range. Mesoporous structure makes them unique.…”

Section: Synthetic Methods Of Lsnsmentioning

confidence: 99%

Classification, Synthesis, and Application of Luminescent Silica Nanoparticles: a Review

Wang

Tang

et al. 2019

Nanoscale Res Lett

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Luminescent materials are of worldwide interest because of their unique optical properties. Silica, which is transparent to light, is an ideal matrix for luminescent materials. Luminescent silica nanoparticles (LSNs) have broad applications because of their enhanced chemical and thermal stability. Silica spheres of various sizes could be synthesized by different methods to satisfy specific requirements. Diverse luminescent dyes have potential for different applications. Subject to many factors such as quenchers, their performance was not quite satisfying. This review thus discusses the development of LSNs including their classification, synthesis, and application. It is the highlight that how silica improves the properties of luminescent dye and what role silica plays in the system. Further, their applications in biology, display, and sensors are also described.

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“…Ordered mesoporous materials allow the effective hosting of diverse molecules. For example, Wang et al [ 190 ] obtained a feasible oxygen sensor by grafting CDs in hollow mesoporous silica microspheres (HMSMs), as well as in mesoporous silica microspheres (MSMs). Briefly, anhydrous citric acid and the silane coupler KH-602 were used as precursors for the formation of CDs through the pyrolysis method [ 190 ].…”

Section: Carbon Dot–silica Nanoparticle Synthesis and Applicationsmentioning

confidence: 99%

“…For example, Wang et al [ 190 ] obtained a feasible oxygen sensor by grafting CDs in hollow mesoporous silica microspheres (HMSMs), as well as in mesoporous silica microspheres (MSMs). Briefly, anhydrous citric acid and the silane coupler KH-602 were used as precursors for the formation of CDs through the pyrolysis method [ 190 ]. On the other hand, MSMs were synthesized by using the surfactants CTAB, tetradecyltrimethylammonium bromide (TTAB), stearyltrimethylammonium bromide (STAB), and triethanolamine (TEA) as cotemplates and TEOS as a polymerizing agent.…”

Section: Carbon Dot–silica Nanoparticle Synthesis and Applicationsmentioning

confidence: 99%

A Brief Review of Carbon Dots–Silica Nanoparticles Synthesis and their Potential Use as Biosensing and Theragnostic Applications

Ornelas-Hernández¹,

Garduno-Robles²,

Zepeda‐Moreno

2022

Nanoscale Res Lett

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Carbon dots (CDs) are carbon nanoparticles with sizes below 10 nm and have attracted attention due to their relatively low toxicity, great biocompatibility, water solubility, facile synthesis, and exceptional photoluminescence properties. Accordingly, CDs have been widely exploited in different sensing and biomedical applications, for example, metal sensing, catalysis, biosensing, bioimaging, drug and gene delivery, and theragnostic applications. Similarly, the well-known properties of silica, such as facile surface functionalization, good biocompatibility, high surface area, and tunable pore volume, have allowed the loading of diverse inorganic and organic moieties and nanoparticles, creating complex hybrid nanostructures that exploit distinct properties (optical, magnetic, metallic, mesoporous, etc.) for sensing, biosensing, bioimaging, diagnosis, and gene and drug delivery. In this context, CDs have been successfully grafted into diverse silica nanostructures through various synthesis methods (e.g., solgel chemistry, inverse microemulsion, surfactant templating, and molecular imprinting technology (MIT)), imparting hybrid nanostructures with multimodal properties for distinct objectives. This review discusses the recently employed synthesis methods for CDs and silica nanoparticles and their typical applications. Then, we focus on combined synthesis techniques of CD–silica nanostructures and their promising biosensing operations. Finally, we overview the most recent potential applications of these materials as innovative smart hybrid nanocarriers and theragnostic agents for the nanomedical field. Graphical abstract

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Preparation, characterization and oxygen sensing properties of luminescent carbon dots assembled mesoporous silica microspheres

Cited by 38 publications

References 30 publications

Recent development in carbon dot-based gas sensors

Recent development in carbon dot-based gas sensors

Classification, Synthesis, and Application of Luminescent Silica Nanoparticles: a Review

A Brief Review of Carbon Dots–Silica Nanoparticles Synthesis and their Potential Use as Biosensing and Theragnostic Applications

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