Silicon quantum dots with tunable emission synthesized via one-step hydrothermal method and their application in alkaline phosphatase detection

Zheng, Li; Ren, Xiangling; Hao, Chenxi; Meng, Xianwei; Li, Zenghe

doi:10.1016/j.snb.2017.12.175

Cited by 29 publications

(8 citation statements)

References 26 publications

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“…Fortunately, due to the several silicon sources and rich groups on the surface, silicon quantum dots (SiQDs) present colorful luminescent and absorbent properties by adjusting the groups on SiQDs surface so that they can emit light from blue to red. − Based on their luminescent properties, many applications are possible, such as photostable biological probes, light-emitting diode, alkaline phosphatase detection, etc. But there are no studies on the detailed absorption properties of water-soluble SiQDs with low cost, especially UV absorption and related applications, and their UV absorption mechanism has not been reported to date.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Silicon Quantum Dots with Highly Efficient Full-Band UV Absorption and Their Applications in Antiyellowing and Resistance of Photodegradation

Sun

Xie

et al. 2019

ACS Appl. Mater. Interfaces

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UV absorbers are very effective in the fields of antiyellowing, resistance of photocatalytic degradation, and sunscreen cosmetics. However, commercialized UV absorbers have the drawbacks of toxicity, low absorption efficiency, transparency, etc. Here, we report for the first time silicon quantum dots as full-band UV absorbers. The NH-refunctionalized silicon quantum dots with high-performance UV absorption were successfully synthesized under the synergistic effect of sodium citrate and ethanediamine, and the (NH, OH)-functionalized silicon quantum dots (SiQDs) with full-band UV absorption can be achieved by reregulating −NH2 and −OH groups on the surface. The as-prepared (NH, OH)-functionalized SiQDs exhibited good stability and underwent treatment of varying pH and temperature. Furthermore, experimental results demonstrated that compared to commercial water-soluble organic UV absorbers, the (NH, OH)-functionalized SiQDs showed better antiyellowing performance for polyurethane and resistance of photocatalytic degradation for rhodamine B, and presented huge application potential in sunscreen cosmetics. Finally, the UV absorption mechanism of SiQDs was explained to be mainly related to Γ → Γ direct band gap transition, which absorb UV light and release it as thermal radiation.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Silicon Quantum Dots with Highly Efficient Full-Band UV Absorption and Their Applications in Antiyellowing and Resistance of Photodegradation

Sun

Xie

et al. 2019

ACS Appl. Mater. Interfaces

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“…The obtained Si QDs have a very narrow size distribution of about 4.5 nm. In addition, Si QDs can also be synthesized by other less common methods, such as the hydrothermal method, self‐assembly, the cosputtering method, supercritical fluid preparation, and high‐temperature laser synthesis …”

Section: Classifications Of Nano‐si Materialsmentioning

confidence: 99%

Different Dimensional Nanostructured Silicon Materials: From Synthesis Methodology to Application in High‐Energy Lithium‐Ion Batteries

2019

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Nanostructured silicon is regarded as one of the most promising next‐generation anode materials for lithium‐ion batteries (LIBs) due to its high capacity and proper working voltage. However, the complexity in preparing nanostructured silicon and the large volume change in silicon during lithiation and delithiation impedes its commercial application. Herein, the recent progresses relating to nanostructured Si‐based anode materials are reviewed. The preparation of nanostructured silicon from dimensionality and methodology is mainly focused on, and the impactful works on silicon‐based anodes, as well as the recent research directions in this field, are outlined. Finally, key lessons from the successes so far are reviewed, and further perspectives to enable the application of silicon‐based anodes in practical LIBs are offered.

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“…Over the past two decades, tremendous progress has been made in the fluorescence sensor region of SiNPs for intrinsic nontoxicity, which are deemed to be suitable alternatives to traditional II-VI quantum dots [10,11]. Previous works have reported the successful use of SiNPs for the detection of Cu 2+ [12], Hg 2+ [13], dopamine [14], heparin [15], 2,4,6-trinitrophenol [16], phosphatase [17], glutathione [18], nitrite [19], chromium [20], cysteine [21], chlorogenic acid [22], and tetracycline [23]. However, there are few studies regarding the use of SiNPs as a probe for the detection of F − ion.…”

Section: Introductionmentioning

confidence: 99%

“Switch-Off-On” Detection of Fe3+ and F− Ions Based on Fluorescence Silicon Nanoparticles and Their Application to Food Samples

Zhao

Ren

et al. 2022

Nanomaterials

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An approach to the detection of F− ions in food samples was developed based on a “switch-off-on” fluorescence probe of silicon nanoparticles (SiNPs). The fluorescence of the synthetic SiNPs was gradually quenched in the presence of Fe3+ ion and slightly recovered with the addition of F− ion owing to the formation of a stable and colorless ferric fluoride. The fluorescence recovery exhibited a good linear relationship (R2 = 0.9992) as the concentration of F− ion increased from 0 to 100 μmol·L−1. The detection limit of the established method of F− ion was 0.05 μmol·L−1. The recovery experiments confirmed the accuracy and reliability of the proposed method. The ultraviolet–visible spectra, fluorescence decays, and zeta potentials evidenced the fluorescence quenching mechanism involving the electron transfer between the SiNPs and Fe3+ ion, while the fluorescence recovery resulted from the formation of ferric fluoride. Finally, SiNPs were successfully applied to detect F− ions in tap water, Antarctic krill, and Antarctic krill powder.

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Silicon quantum dots with tunable emission synthesized via one-step hydrothermal method and their application in alkaline phosphatase detection

Cited by 29 publications

References 26 publications

Synthesis of Silicon Quantum Dots with Highly Efficient Full-Band UV Absorption and Their Applications in Antiyellowing and Resistance of Photodegradation

Synthesis of Silicon Quantum Dots with Highly Efficient Full-Band UV Absorption and Their Applications in Antiyellowing and Resistance of Photodegradation

Different Dimensional Nanostructured Silicon Materials: From Synthesis Methodology to Application in High‐Energy Lithium‐Ion Batteries

“Switch-Off-On” Detection of Fe3+ and F− Ions Based on Fluorescence Silicon Nanoparticles and Their Application to Food Samples

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