Construction of Nanocrystalline Cellulose-Based Composite Fiber Films with Excellent Porosity Performances via an Electrospinning Strategy

Ge, Lei; Yin, Juanjuan; Yan, Dan; Hong, Wei; Jiao, Tifeng

doi:10.1021/acsomega.0c06002

Cited by 49 publications

(13 citation statements)

References 49 publications

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“…The result of EIS curves shows that the BPNS-PEI/MB-90 composite film has the smallest semicircular arc, indicating that it had the best conductivity and carrier transfer rate, as shown in Figure c. All the results prove that the obtained BPNS-PEI and dye composite films had high-efficiency charge-transfer ability and showed enhanced photoelectric conversion ability compared with pure MB film and BPNS-PEI film electrodes, showing wide applications in composite materials. − …”

Section: Resultsmentioning

confidence: 78%

Construction of Multifunctional and Adjustable Langmuir–Blodgett Composite Films Containing Black Phosphorus with High Stability for Optically Electrical Applications

Wang

et al. 2021

Langmuir

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Fabrication of composite thin-film materials based on black phosphorus (BP) will greatly broaden the applications of BP in various areas. However, it is still a challenge to prepare a BP-based composite film with good stability and controllable structure. In this work, a series of BP-based composite Langmuir−Blodgett (LB) films are prepared by the selfassembly of polyethyleneimine (PEI)-modified BP nanosheets (BPNSs) (BPNS-PEI) and dye molecules. The presence of PEI greatly improves the stability of BPNSs. As for BPNS-PEI and dye molecules, the electrostatic interactions or π−π stacking interactions ensure the formation of stable composite LB films. Due to the protonation and deprotonation of amino groups, the synthesized BPNS-PEI/dye composite films show a sensitive response to acid and alkali gases, which shows wide application prospects as a highly sensitive gas sensor. Furthermore, surface-enhanced Raman scattering (SERS) proves that the prepared LB films exhibit good reproducibility and obvious Raman enhancement effect on rhodamine 6G molecules. In addition, due to the high carrier transfer rate of the obtained composite films, they possess enhanced photocurrent generation performance than pure BPNS-PEI and pure dye films. The current work demonstrates an effective method for preparing the ordered self-assembled BP-based composite LB films with good SERS and photoelectric conversion performance.

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Section: Resultsmentioning

confidence: 78%

Construction of Multifunctional and Adjustable Langmuir–Blodgett Composite Films Containing Black Phosphorus with High Stability for Optically Electrical Applications

Wang

et al. 2021

Langmuir

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“…The peak at 691 cm –1 corresponds to the bending vibration peak of N–H of amide. According to the results of FTIR, the surface of CPDs contains polar functional groups such as −NH 2 , −COOH, and −OH. ,− …”

Section: Resultsmentioning

confidence: 99%

Simple and Green Synthesis of Carbonized Polymer dots from Nylon 66 Waste Fibers and its Potential Application

Wang

Liu

et al. 2021

ACS Omega

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Carbonized polymer dots (CPDs) have attracted widespread attention owing to their unique properties and are usually prepared from monomers of polymers or polymers. To reduce the waste of high-value petropolymers and environmental pollution, a simple and green method for the preparation of CPDs using a hydrothermal technique based on the cross-linking enhanced emission effect was proposed, in which nylon 66 waste fibers were used as a precursor and glutaraldehyde as a crosslinking agent. The as-prepared CPDs possessed polymer/carbon hybrid structures with a 3.5 nm average diameter, and hydroxyl (−OH), carboxyl (−COOH), and amino (−NH 2 ) groups were present on the surface of CPDs. It can be found that the asprepared CPDs display excitation-dependent photoluminescence emission, which is mainly attributed to the molecular state luminescence center. Because the molecular state fluorescence of CPDs could be affected by the presence of Fe 3+ and the change of pH values, the as-prepared CPDs can be used as a probe for the detection of the concentration of Fe 3+ and the pH variations of solution. The fluorescence intensity of CPDs was selectively quenched by Fe 3+ in the range from 1 to 145 μM. In virtue of the static quenching of CPDs by Fe 3+ , a sensing system was fabricated for the quantitative detection of Fe 3+ , and its limit of detection was 0.1 μM. Based on the electrostatic doping/charging of CPDs, a pH sensor was fabricated. It showed that the fluorescence intensity of CPDs decreased along with the increase of pH from 2.60 to 12.6. What is more, the CPDs were found to be an alternative to traditional fluorescent inks for encryption and information storage.

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“…In a study, for example, a composite of self-assembled monolayers from chitosan, carbon nanotubes, and octa-amino polyhedral oligomeric silsesquioxanes has been developed for the isolation of Congo red and methyl orange dyes. 7 The other composites in the same category include the natural adsorbents manufactured from nanofibers containing the cellulose nanocrystals, 8 graphene oxide-polyethyleneimine hydrogels, 9 and Fe 3 O 4 /poly(allylamine)/carboxylate graphene oxide sheets formed from layer-by-layer self-assembly-mediated formation, 10 to name a few. Polyaniline (PANI) is an excellent conductive polymer as it contains the −NH groups in addition to the aromatic unsaturation in its structure, and it is widely used in the manufacturing of printed circuit boards, antistatic coatings, and also as the corrosion protector.…”

Section: Introductionmentioning

confidence: 99%

Surface-Enhanced Biocompatibility and Adsorption Capacity of a Zirconium Phosphate-Coated Polyaniline Composite

et al. 2021

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The present study deals with the synthesis, characterization, and testing of a novel composite, zirconium(IV) phosphate-coated polyaniline (ZrPO 4 @PANI), toward the adsorption- and surface-controlled toxicity applications. Following the synthesis of the ZrPO 4 @PANI composite using the sol–gel route, various characterization techniques such as Fourier transform infrared spectroscopy, scanning electron microscopy, and powder X-ray diffraction were employed to confirm its surface functionality, morphology and agglomeration, and crystallinity and crystal nature, respectively. The composite was found to be effective toward the adsorptive removal of the methylene blue dye (an organic pollutant) as against the changes in the dye concentration, dose, pH, and so forth. Also, to understand the MB adsorption kinetics, the experimental data were evaluated using the Langmuir and Freundlich models and the results were described in accordance with the Langmuir isotherm model (an adsorption capacity of 120.48 mg/g at ambient temperature). In addition, the tests conducted using pseudo-first- and pseudo-second-order kinetic models confirmed the existence of pseudo-second-order rates. Furthermore, the calculation of thermodynamic parameters for the MB adsorption, namely, changes in enthalpy, entropy, and Gibbs’ free energy, exhibited a spontaneous, feasible, and exothermic nature. Finally, the comparative studies of in vitro toxicity and flow cytometry confirmed that the copresence of ZrPO 4 along with PANI significantly improved the biocompatibility. The outcome of the experimental results implies that the composite is capable enough of serving as the safe and low-cost adsorbent, in addition to supporting the effective capping of the surface toxicity of PANI.

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Construction of Nanocrystalline Cellulose-Based Composite Fiber Films with Excellent Porosity Performances via an Electrospinning Strategy

Cited by 49 publications

References 49 publications

Construction of Multifunctional and Adjustable Langmuir–Blodgett Composite Films Containing Black Phosphorus with High Stability for Optically Electrical Applications

Construction of Multifunctional and Adjustable Langmuir–Blodgett Composite Films Containing Black Phosphorus with High Stability for Optically Electrical Applications

Simple and Green Synthesis of Carbonized Polymer dots from Nylon 66 Waste Fibers and its Potential Application

Surface-Enhanced Biocompatibility and Adsorption Capacity of a Zirconium Phosphate-Coated Polyaniline Composite

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