Fluorescent starch-based hydrogel with cellulose nanofibrils and carbon dots for simultaneous adsorption and detection of Pb(II)

Zhang, Zhixu; Huang, Zhengwu; Qin, Dan; Liu, Dongbo; Guo, Xin; Lin, Haiyan

doi:10.1016/j.carbpol.2023.121427

Cited by 12 publications

(1 citation statement)

References 65 publications

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“…To illustrate the effectiveness of carbon-dot-doped hydrogel, compared with the hydrogel alone, the addition of carbon dots facilitates the stabilization of the structure. Zhang et al 20 found the incorporation of CDs held the potential to enhance the functionality of hydrogels. Amoozadeh et al 21 thought modified carbon quantum dots (CQDs) were useful in the synthesis of curable hydrogels.…”

Section: ■ Introductionmentioning

confidence: 99%

Carbon Dot-Stabilized Hydrogel Composite: A New Adsorbent for Efficient and Sustainable Pb(II) Removal

Wei,

Zhou,

Wei

et al. 2024

Langmuir

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In this paper, a carbon dot hydrogel composite (CDs-Hy) capable of efficiently removing Pb(II) was prepared by hydrogen bonding self-assembly in combination with carbon dots and a hydrogel. CDs-Hy was characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS), and the effect of the adsorption conditions on the adsorption efficiency of CDs-Hy was studied. The results of the study showed that the incorporation of carbon dots, on the one hand, significantly increased the adsorption capacity of the material. On the other hand, it can increase the stability of hydrogels in aqueous solution. The possible adsorption mechanisms were further verified as ion exchange and coordination. CDs-Hy is a novel adsorbent material capable of removing Pb 2+ efficiently, which can be reused several times with high stability.

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Section: ■ Introductionmentioning

confidence: 99%

Carbon Dot-Stabilized Hydrogel Composite: A New Adsorbent for Efficient and Sustainable Pb(II) Removal

Wei,

Zhou,

Wei

et al. 2024

Langmuir

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Use of Interfacial Interactions and Complexation of Carbon Dots to Construct Ultra‐Robust and Efficient Photothermal Film From Micro‐Carbonized Polysaccharides

Ding,

Liu,

Yang

et al. 2024

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Solar energy conversion technologies, particularly solar‐driven photothermal conversion, are both clean and manageable. Although much progress has been made in designing solar‐driven photothermal materials, significant challenges remain, not least the photobleaching of organic dyes. To tackle these issues, micro‐carbonized polysaccharide chains, with carbon dots (CDs) suspended from the chains, are conceived, just like grapes or tomatoes hanging from a vine. Carbonization of sodium carboxymethyl cellulose (CMC) produces just such a structure (termed CMC‐g‐CDs), which is used to produce an ultra‐stable, robust, and efficient solar‐thermal film by interfacial interactions within the CMC‐g‐CDs. The introduction of the CDs into the matrix of the photothermal material effectively avoided the problem of photobleaching. Manipulating the interfacial interactions (such as electrostatic interactions, van der Waals interactions, π–π stacking, and hydrogen bonding) between the CDs and the polymer chains markedly enhances the mechanical properties of the photothermal film. The CMC‐g‐CDs are complexed with Fe3+ to eliminate leakage of the photothermal reagent from the matrix and to solve the problem of poor water resistance. The resulting film (CMC‐g‐CDs‐Fe) has excellent prospects for practical application as a photothermal film.

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Regulating the Surface State of Carbon Dots as Ultrahigh‐Capacity Adsorbents for Water Treatment

Chen,

Li,

Zou

et al. 2024

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Adsorption is one of the most widely researched and highly effective methods for mitigating the environmental threat posed by recalcitrant dyes in aqueous solutions. This paper presents a solvent‐free synthesis method for the rapid and large‐scale production of nitrogen (N) and phosphorus (P) co‐doped carbon dots (N, P‐CDs) which possess specific surface states and outstanding dye adsorption properties. Compared to the undoped CDs, the N, P‐CDs not only exhibit a higher yield of solid‐state luminescence but also endow them with the efficient adsorption and removal of Congo red (CR) from water. Due to the synergistic effects of π–π stacking, hydrogen bonding and electrostatic attraction, the N, P‐CDs exhibit an ultra‐high adsorption capacity (3118.87 mg g−1) and a removal efficiency (97.4%, at 500 mg L−1) for CR, and also display excellent selective adsorption in both single‐dye and dual‐dye systems. This method offers a rational strategy for synthesizing novel CDs‐based adsorbents for CR, which provides a demonstration for future dye adsorption studies and practical wastewater treatment applications of CDs.

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Fluorescent starch-based hydrogel with cellulose nanofibrils and carbon dots for simultaneous adsorption and detection of Pb(II)

Cited by 12 publications

References 65 publications

Carbon Dot-Stabilized Hydrogel Composite: A New Adsorbent for Efficient and Sustainable Pb(II) Removal

Carbon Dot-Stabilized Hydrogel Composite: A New Adsorbent for Efficient and Sustainable Pb(II) Removal

Use of Interfacial Interactions and Complexation of Carbon Dots to Construct Ultra‐Robust and Efficient Photothermal Film From Micro‐Carbonized Polysaccharides

Regulating the Surface State of Carbon Dots as Ultrahigh‐Capacity Adsorbents for Water Treatment

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