High-efficiency nanodelamination of NiCoLDHs with hydroquinone as intercalator in universal solvent and physical treatme
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RESEARCH PAPER
High-efficiency nanodelamination of NiCoLDHs with hydroquinone as intercalator in universal solvent and physical treatments Xinming Wu & Bin Huang & Yang Gao
Received: 18 May 2020 / Accepted: 20 August 2020 # Springer Nature B.V. 2020
Abstract Nanodelamination and controlled stripping of two-dimensional materials are important ways to realize the release of the performance of nano-functional materials. This work shows that hydroquinone (HQ) intercalated nickel-cobalt hydroxides (NiCoLDHs) have been nanodelaminated in different solvents (water, ethanol, ethanol/water, and toluene) and physical treatment (ultrasonic bath, magnetic stirring, and hydrothermal). Scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction techniques (XRD), Fourier transform infrared (FT-IR), thermal analyses (DSC-TGA), and Brunauer-Emmett-Teller (BET) were used to characterize the structures of all the samples. The results show that nanodelamination of the treated NiCoLDHs-HQ samples with three kinds of physical treatment in different solvents reduces the intensity of the characteristic d001 reflections and moves to the smaller angle, indicating that the HQ is an effective nanodelamination intercalation agent. Microstructure and BET analysis also demonstrate that NiCoLDHs achieve high-efficiency nanodelamination driven by HQ in ethanol and ultrasonic bath than that of other in solvents and physical treatment. This significant
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s11051-020-04997-2) contains supplementary material, which is available to authorized users. X. Wu (*) : B. Huang : Y. Gao School of Materials Science and Chemical Engineering, Xi’an Technological University, Xi’an 710032, People’s Republic of China e-mail: [email protected]
delamination effect is mainly attributed to the interaction between hydroquinone and NiCoLDHs or solvent, and this delamination strategy provides a new method for efficient application of 2D material as electrode, catalyst, or polymer/clay nanocomposites.
Keywords Hydroquinone . LDHs . Delamination . Solvent . Physical treatment . Nanocomposites
Introduction Two-dimensional layered materials, such as nickelcobalt double hydroxides (NiCoLDHs), MXene, and graphene, have attracted much attention in the field of application materials due to their high specific surface area, 2D lamellar structure, unique electronic structure, excellent physical-chemical properties, and interlayer controllable modification (Lukatskaya et al. 2013; Chen et al. 2018; Wang et al. 2020; Wu et al. 2019). In recent years, the development of nanomaterial science and nanocomposite technology gives a new opportunity for two-dimensional layered materials. All researches show that the two-dimensional layered materials have unique nanoscale layer spacing and ion adsorption, which endow them with many excellent application characteristics in nanocomposites, transparent electrode materials, and electrochemical storage (Wu et al. 20
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