A novel ion-responsive photonic hydrogel sensor for portable visual detection and timely removal of lead ions in water

Peng, Zhuo; Yu, Hai-Rong; Wen, Jing-Ya; Wang, Yan-Lin; Liang, Ting; Cheng, Chang-Jing

doi:10.1039/d2ma00232a

Cited by 15 publications

(10 citation statements)

References 64 publications

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“…Pb 2+ adsorption onto the MCNC occurs mainly on the heterogeneous surface or surface support positions with different affinities. The Freundlich constant n is larger than 1, indicating the high adsorption intensity of the MCNC toward Pb 2+ [12]. This is a multilayer adsorbent material.…”

Section: Effect Of the Initial Concentration Of Pb 2+ On The Adsorpti...mentioning

confidence: 95%

Synthesis of Ferromagnetic Nanocomposites from Nanocrystalline Cellulose and Characterization as an Adsorbent to Remove Lead in the Water

Pham

Ngoc

Dinh

et al. 2023

Preprint

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This research presented a method to synthesize magnetic nanocrystalline cellulose-based nanocomposites using in-situ co-precipitation technique to produce ferromagnetic oxide particles (Fe3O4) that were grafted on the surface of cellulose nanocrystals (CNCs). The synthesized material was used to remove lead ions from aqueous solutions. Different physicochemical analyst techniques such as XRD, FTIR, SEM, and TEM were used to characterize the structure of the material upon the different ratios of cellulose nanocrystals/ Fe3O4. The XRD analysis showed that CNC/Fe3O4 nanocomposite has characteristic diffraction peaks corresponding to Fe3O4 and cellulose nanocrystals. The FTIR spectrum indicated the specific functional groups of Fe3O4 and CNC in the nanocomposite materials. The size of nanoparticles produced in this work were less than 15 nm with Fe3O4 and roughly 25 nm with CNC via image SEM and TEM. According to these studies, with the same Pb2+ concentration in water of 200 ppm, the best condition for homogenous materials was the 1:1 ratio (cellulose nanocrystals: Fe3O4) and the adsorption capacity at time balance (qe) was 113.2 mg/g. The lead adsorption of material was evaluated by the ICP-OES fitted the Freundlich isotherm model better than the Langmuir isotherm model. The new adsorbent can help removing 60 % of Pb2+ from the solution, and can be magnetically separated from the continuous phase.

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Section: Effect Of the Initial Concentration Of Pb 2+ On The Adsorpti...mentioning

confidence: 95%

Synthesis of Ferromagnetic Nanocomposites from Nanocrystalline Cellulose and Characterization as an Adsorbent to Remove Lead in the Water

Pham

Ngoc

Dinh

et al. 2023

Preprint

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“…[88] Cheng et al reported an ion-responsive photonic hydrogel sensor for visual detection. [89] The 18-crown-6 unit in the hydrogel backbone acts as a Pb 2+ -responsive acceptor and forms a host-guest inclusion complex with Pb 2+ in water. In this case, the hydrogel undergoes a hydrophobic to hydrophilic transition and gradually absorbs water and swells, which causes an increase in the lattice spacing of embedded Fe 3 O 4 CNCs and a gradual red shift of the structural color (Figure 19a).…”

Section: Sensorsmentioning

confidence: 99%

Stimuli‐responsive photonic actuators for integrated biomimetic and intelligent systems

Gao

Tang

Martella

et al. 2023

Responsive Materials

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Photonic actuators, serving as an emerging kind of intelligent stimuli‐responsive material, can exhibit the abilities to change their structural colors/fluorescence and shapes under specific external stimuli, which have demonstrated essential applications in the fields of intelligent soft robotics, sensors, bionics, information storage, anti‐counterfeiting, and energy harvesting. In this review, we reported the state‐of‐the‐art research progress of stimuli‐responsive photonic actuators classified on the basis of the material type and focusing on the actuation mechanisms, design principles, and processing techniques. We also broadly summarized the relative applications of photonic actuators in bionics, intelligent robots, sensors, and so on. Finally, a vision for the challenges in the area and future promising directions of stimuli‐responsive photonic actuators is presented.

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“…The significant advantages of RPCHs with a non-fading nature, high stability, and bright colors make them applicable as colorimetric detection devices. − Through the development of an ion-responsive photonic hydrogel sensor composed of poly( N -isopropylacrylamide- co -benzo-18-crown-6-acrylamide), Shen et al achieved the colorimetric detection of Pb 2+ manually . Additionally, the linear detection of Cu(II) ions was achieved by using carbon dot-based inverse opal hydrogels with photoluminescence to achieve the dual-mode detection of solvents and metal ions .…”

Section: Introductionmentioning

confidence: 99%

Portable Comestible-Liquid Quality Test Enabled by Stretchable and Reusable Ion-Detection Photonic Papers

Zhou

Chen

et al. 2023

ACS Appl. Mater. Interfaces

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Currently, there have been widespread investigation conducted into responsive photonic crystal hydrogels (RPCHs) characterized by high selectivity and sensitivity for colorimetric indicators and physical/chemical sensors. In spite of this, it remains challenging to use RPCHs for sensing due to their limited mechanical property and molding capability. In the present study, a double-network structure is proposed to design highly stretchable, sensitive, and reusable ion-detection photonic papers (IDPPs) for assessing the quality of visual and portable comestible liquids (e.g., soy sauce). It is constructed by integrating polyacrylamide and polymethacryloxyethyl trimethyl ammonium chloride with highly ordered polystyrene microspheres. The double-network structure improves the mechanical properties of IDPPs with their elongation at break increasing from 110 to 1600%. Meanwhile, the optical properties of photonic crystals are retained. The IDPPs achieve a fast ion response by applying control on the swelling behavior of the hydration radius of the counter ions through ion exchange. Given a certain concentration range (0.01−0.10 M), chloride ions can be detected fast (3−30 s) by exchanging ions with a small hydration radius through an IDPP, which is clearly observable. Due to the improvement of mechanical properties and the reversible exchange of ions derived from IDPPs, their reusability is significantly enhanced (>30 times). Characterized by a simple operation, high durability, and excellent sustainability, these IDPPs are promising for practical application in food security and human health assessment.

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A novel ion-responsive photonic hydrogel sensor for portable visual detection and timely removal of lead ions in water

Abstract: Lead ion (Pb2+) contamination is a worldwide serious environment problem. Although various methods have been developed for detection or removal of Pb2+ in water environment, possessing both highly-selective, visual monitoring...

Cited by 15 publications

References 64 publications

Synthesis of Ferromagnetic Nanocomposites from Nanocrystalline Cellulose and Characterization as an Adsorbent to Remove Lead in the Water

Synthesis of Ferromagnetic Nanocomposites from Nanocrystalline Cellulose and Characterization as an Adsorbent to Remove Lead in the Water

Stimuli‐responsive photonic actuators for integrated biomimetic and intelligent systems

Portable Comestible-Liquid Quality Test Enabled by Stretchable and Reusable Ion-Detection Photonic Papers

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