Carboxyl-rich g-C3N4 nanoparticles: Synthesis, characterization and their application for selective fluorescence sensing of Hg2+ and Fe3+ in aqueous media

Shiravand, Ghasem; Badiei, Alireza; Ziarani, Ghodsi Mohammadi

doi:10.1016/j.snb.2016.11.038

Cited by 129 publications

(46 citation statements)

References 74 publications

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“…The peak at 27.6° is indexed as the (002) peak of the stacking peak of aromatic systems . Previous study revealed that the peaks at 12.8° and 27.6° were the representative parameters of thickness and lateral size respectively . As the thickness decreases, the diffraction peak at 12.8° gradually disappears .…”

Section: Resultsmentioning

confidence: 99%

“…22 Previous study revealed that the peaks at 12.8 ∘ and 27.6 ∘ were the representative parameters of thickness and lateral size respectively. 23 As the thickness decreases, the diffraction peak at 12.8 ∘ gradually disappears. 22,24 It is noted that the XRD pattern of -CD/g-C 3 N 4 nanocomplex showed only one peak at 27.6 ∘ which indicated the formation of nanosheet structure.…”

Section: X-ray Diffractionmentioning

confidence: 98%

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β‐cyclodextrin modified g‐C₃N₄ nanosheet: a fluorescent drug carrier with ultrahigh drug loading capacity and pH‐responsive release

Liu

Dong

Zeng

et al. 2018

J of Chemical Tech & Biotech

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Background β‐cyclodextrin modified g‐C3N4 (β‐CD/g‐C3N4) nanosheets were successfully synthesized and developed as a novel drug carrier of doxorubicin hydrochloride (DOX•HCl). The prepared samples were characterized by Fourier transform infrared spectroscopy (FTIR), X‐ray diffraction (XRD) and transmission electron microscopy (TEM). The drug‐loading and drug release was measured by a UV–visible spectrophotometer. Moreover, cell viability tests were carried out to evaluate the inhibition ratio of β‐CD/g‐C3N4‐DOX•HCl and bulk g‐C3N4‐DOX•HCl. Results The FTIR result confirmed that β‐CD and g‐C3N4 are linked by hydrogen bonds. The XRD and TEM results showed that β‐CD/g‐C3N4 has nanosheet structure with size range 150–300 nm. The drug‐loading ratio rises sharply in the first 14 h and reaches a maximum of 93%. Moreover, β‐CD/g‐C3N4 nanocomplex showed a pH‐responsive DOX•HCl release with a release ratio of 80% at pH = 5, which is two times higher than that of bulk g‐C3N4. Cell viability tests demonstrated that the β‐CD/g‐C3N4‐DOX•HCl exhibit a higher inhibition ratio on MG63 cells than bulk g‐C3N4‐DOX•HCl. Conclusion β‐CD/g‐C3N4 nanocomplex achieves an ultrahigh drug‐loading capacity and pH‐responsive release and visualization of the cell phagocytic process. The results indicate that the β‐CD/g‐C3N4 nanocomplex can be developed as a promising luminescence carrier for drug delivery. © 2018 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 99%

Section: X-ray Diffractionmentioning

confidence: 98%

β‐cyclodextrin modified g‐C₃N₄ nanosheet: a fluorescent drug carrier with ultrahigh drug loading capacity and pH‐responsive release

Liu

Dong

Zeng

et al. 2018

J of Chemical Tech & Biotech

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“…According to previous research, when the acidic proton of carboxylic acid is replaced by different cations to form carboxylate salts, the characteristic bands of carboxylic acids disappear . The functional groups of all the samples were investigated by FTIR spectroscopy.…”

Section: Resultsmentioning

confidence: 99%

Modified carbon nitride as an efficient adsorbent for ammonia nitrogen with low concentration

Sun

Wang

et al. 2019

Can J Chem Eng

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The adverse effects of excessive ammonia on aquatic ecosystem have provoked the development of efficient methods for its removal. Here, we present a thermal copolymerization of melamine and sodium hydrogen carbonate and successfully introduce oxygen groups into the structure of g-C 3 N 4 , which is applied to lowconcentration ammonia removal. Oxygen groups are introduced into g-C 3 N 4 and increase its surface electron negativity. When the initial concentration of ammonia nitrogen is 18.74 mg L −1 , the lowest concentration of it after adsorption is 1.43 mg L −1 , and the ammonia nitrogen removal efficiency is 92.3%. The main reason for our material high performance on adsorption ammonium may be ascribed to deprotonated carboxylic acid, which has the ability to adsorb positively charged ammonium ions. K E Y W O R D Sammonia nitrogen adsorption, carbon nitride, near neutral pH

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“…For sensitive sensing with a fast kinetic response, g‐CN with a large surface area, an abundance of active sites and high water dispersity is desirable for the immobilization of recognition elements and the efficient mass transport. In recent years, the creation of g‐CN with morphologies in nanoscale, high water dispersity, and the coupling of nanostructured g‐CN with other substances have improved its sensing capabilities . g‐CN nanoarchitectures include hollow sphere, nanospeherial frameworks, nanosheets, tubes, rods, quantum dots, nanoparticles, nanocomposites, and g‐CN film or self‐standing structures composed of various nanoarchitectures, as shown in Figure .…”

Section: Synthesis Of G‐c3n4 Nanostructures and G‐c3n4‐based Compositmentioning

confidence: 99%

“…These FL sensors in which g‐CN plays dual roles as both recognition elements and signal reporters suffer from poor selectivity. Recently, carboxyl‐rich g‐CN nanoparticles have shown improved specificity toward Hg 2+ assay . Furthermore, an “on–off–on” strategy was introduced to improve sensor selectivity .…”

Section: Using G‐cn Nanostructures and Nanocomposites To Construct Chmentioning

confidence: 99%

Tailored Graphitic Carbon Nitride Nanostructures: Synthesis, Modification, and Sensing Applications

Chen

Song

2017

Adv Funct Materials

164

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donating-driven property (e.g., catalysis and strong affinity to Lewis acid). These unique properties motivated huge activity in sensing applications of g-CN, indicating by the growing collection of publications concerning g-CN-based sensors, as displayed in Figure 3.This article reviews state-of-the-art sensing applications of nanostructured g-CN. We begin with a highlight of the diverse micro/nanostructures and nanocomposites of g-CN that are suitable for sensing applications and summarize the known signaling modes and sensing mechanisms. This is followed by a highlight of several interesting sensing examples. Finally, we also discuss new frontiers in the use of g-CN for sensing applications and identify existing challenges.

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Carboxyl-rich g-C3N4 nanoparticles: Synthesis, characterization and their application for selective fluorescence sensing of Hg2+ and Fe3+ in aqueous media

Cited by 129 publications

References 74 publications

β‐cyclodextrin modified g‐C₃N₄ nanosheet: a fluorescent drug carrier with ultrahigh drug loading capacity and pH‐responsive release

β‐cyclodextrin modified g‐C₃N₄ nanosheet: a fluorescent drug carrier with ultrahigh drug loading capacity and pH‐responsive release

Modified carbon nitride as an efficient adsorbent for ammonia nitrogen with low concentration

Tailored Graphitic Carbon Nitride Nanostructures: Synthesis, Modification, and Sensing Applications

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Carboxyl-rich g-C3N4 nanoparticles: Synthesis, characterization and their application for selective fluorescence sensing of Hg2+ and Fe3+ in aqueous media

Cited by 129 publications

References 74 publications

β‐cyclodextrin modified g‐C3N4 nanosheet: a fluorescent drug carrier with ultrahigh drug loading capacity and pH‐responsive release

β‐cyclodextrin modified g‐C3N4 nanosheet: a fluorescent drug carrier with ultrahigh drug loading capacity and pH‐responsive release

Modified carbon nitride as an efficient adsorbent for ammonia nitrogen with low concentration

Tailored Graphitic Carbon Nitride Nanostructures: Synthesis, Modification, and Sensing Applications

Contact Info

Product

Resources

About

β‐cyclodextrin modified g‐C₃N₄ nanosheet: a fluorescent drug carrier with ultrahigh drug loading capacity and pH‐responsive release

β‐cyclodextrin modified g‐C₃N₄ nanosheet: a fluorescent drug carrier with ultrahigh drug loading capacity and pH‐responsive release