Largely Improved Breakdown Strength and Discharge Efficiency of Layer‐Structured Nanocomposites by Filling with a Small Loading Fraction of 2D Zirconium Phosphate Nanosheets

Liang, Liang; Shi, Zhicheng; Tan, Xueling; Sun, Shengbiao; Chen, Ming; Dastan, Davoud; Dong, Bohua; Cao, Lixin

doi:10.1002/admi.202101646

Cited by 43 publications

(16 citation statements)

References 65 publications

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“…Therefore, it can be concluded that the fabrics were well coated with the TiO 2 nanoparticles. These results are consistent with other studies on TiO 2 nanoparticles ( 29 , 33 – 37 ).…”

Section: Resultssupporting

confidence: 94%

UV protection properties of workwear fabrics coated with TiO2 nanoparticles

Rabiei

Dehghan

Montazer

et al. 2022

Front. Public Health

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The main purpose of this study was to evaluate the ultraviolet protective factor (UPF) of fabrics coated with TiO2 nanoparticles made using an in-situ synthesis method and more accurately assess the intrinsic properties of the textile. The cotton-polyester twill fabric (70–30%) (246.67 g/m2) was coated in-situ with TiO2 nanoparticles. In-situ coating is conducted in 4 steps; washing the fabrics, preparation of nanoparticles, injecting the nanoparticles into fabrics, and drying the fabric after coating. The scanning electron microscope (SEM) and X-ray diffraction (XRD), FTIR spectrometer, dynamic light scattering (DLS) and UV-Vis spectrophotometer were used to analyse the data of the coating and UPF results. Also, four standards such as ASTM D737, ISIRI 8332, ISIRI 4199, and ISIRI 567 were used for analyzing the intrinsic properties of a textile. The results of SEM, XRD and DLS altogether confirmed the in-situ formation of nanoparticles onto textile fibers. Moreover, the UPF value of the uncoated and coated fabrics was 3.67 and 55.82, respectively. It was shown that the in-situ deposition of TiO2 nanoparticles on fabric can provide adequate protection against UVR. Also, the results of analyzing the intrinsic properties of the textile showed that there were no significant differences in the intrinsic properties between the coated and uncoated fabrics. Based on the results, it can be concluded that the UV protective properties of workwear fabrics can be improved by coating TiO2 nanoparticles on them without any effect on the cooling effect of perspiration evaporation.

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“…Therefore, it can be concluded that the fabrics were well coated with the TiO 2 nanoparticles. These results are consistent with other studies on TiO 2 nanoparticles ( 29 , 33 – 37 ).…”

Section: Resultssupporting

confidence: 94%

UV protection properties of workwear fabrics coated with TiO2 nanoparticles

Rabiei

Dehghan

Montazer

et al. 2022

Front. Public Health

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“…This increase in E b can be linked to the following factors: (1) the interfaces between adjacent layers acting to prevent and delay the breakdown of charge carriers, thereby reducing charge migration, and (2) the applied voltage is mainly concentrated in the pure PEI layer with high breakdown strength. 38 The conductivities of the composites were also measured and are shown in Figure S2. The trilayer composites exhibit extremely low conductivity, indicative of their outstanding insulating performance.…”

Section: Resultsmentioning

confidence: 99%

“…This is particularly true for E b of the trilayer films that contain 0.2 wt % RGO@BTO nanosheets (610.8 kV/mm), approximately 143% of pure P(VDF-HFP). This increase in E b can be linked to the following factors: (1) the interfaces between adjacent layers acting to prevent and delay the breakdown of charge carriers, thereby reducing charge migration, and (2) the applied voltage is mainly concentrated in the pure PEI layer with high breakdown strength . The conductivities of the composites were also measured and are shown in Figure S2.…”

Section: Resultsmentioning

confidence: 99%

Improved Dielectric Permittivity and Energy Density of Layered Polymer Composites through the Incorporation of Ultralow Amounts of RGO@BTO Hybrid Nanosheets

Xia

Chen

Yan

et al. 2022

ACS Appl. Electron. Mater.

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Polymer dielectric composites are extensively used in modern electronic devices because of their extremely high power density. However, unfavorable coupling between breakdown strength and dielectric permittivity can make achieving high energy density a challenge. In this study, reduced graphene oxide @ barium titanate (RGO@BTO) hybrid nanosheets have been fabricated and utilized as fillers in the design of RGO@BTO/P(VDF-HFP) single-layer films. An increase in permittivity to 24.8@10 kHz, i.e., equivalent to 253% of the P(VDF-HFP) (∼9.8@10 kHz) matrix, has been achieved with only 1 wt % RGO@BTO nanofillers due to the formation of microcapacitors. Furthermore, the RGO@BTO/P(VDF-HFP) film is hot-pressed with a PEI film and a P(VDF-HFP) film, forming a trilayer structure. Consequently, this trilayer film displays a high breakdown strength of 478 kV/mm, a high energy density of 8.25 J/cm 3 , and a satisfactory efficiency of 64.3%. Thus, this study provides an efficient route for designing polymer composites that combine high energy density with high permittivity.

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“…Figure 9 demonstrates the IR spectrum obtained from the DFT method and experimental analysis. A large peak was obtained in the 3100-3500 cm −1 range due to the stretch band between O-H and N-H [ 79 , 80 , 81 , 82 , 83 , 84 , 85 ]. The peaks are the signals of OH, CH 2 , and C-O [ 74 , 75 , 76 , 77 ].…”

Section: Resultsmentioning

confidence: 99%

Experimental and Theoretical Studies on Optical Properties of Tetra(Imidazole) of Palladium (II) Phthalocyanine

et al. 2022

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In this work, the optical properties of tetra(imidazole) of palladium phthalocyanine (PdPc(Im)4) in solution form and thin films on glass and fluorine-doped tin oxide (FTO) substrates were investigated via the thermal evaporation technique. The optical band gap was evaluated by ultraviolet–visible spectroscopy (UV-Vis). The energy band gap values were determined based on the Tauc graph. In addition, time-dependent density functional theory (TD-DFT) was used to simulate the UV-Vis absorption spectrum of the (PdPc(Im)4) molecule in the Dimethyl Sulfoxide (DMSO) solution phase. A good correlation was found between the DFT results and the experimental optical results. The band gap values between the experimental and DFT-simulated values are presented. The energy band gap of (PdPc(Im)4) obtained from the DFT calculations showed that it can be efficiently regulated. Frontier molecular orbitals and molecular electrostatic potentials were also proposed in this work. The surface study of the layers deposited on FTO was considered by atomic force microscopy (AFM) and scanning electron microscopy (SEM), and the results demonstrated good homogeneity covering the entire surface. The SEM image showed a homogeneous distribution of the grains with some spherical or rod-shaped structures and no agglomeration structures. This work rendered a strategy for regulating the energy band gap and compared the experimental observations obtained with theoretical studies, which provides a fundamental insight into the optical band for optoelectronic and thin-film solar cells.

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Largely Improved Breakdown Strength and Discharge Efficiency of Layer‐Structured Nanocomposites by Filling with a Small Loading Fraction of 2D Zirconium Phosphate Nanosheets

Cited by 43 publications

References 65 publications

UV protection properties of workwear fabrics coated with TiO2 nanoparticles

UV protection properties of workwear fabrics coated with TiO2 nanoparticles

Improved Dielectric Permittivity and Energy Density of Layered Polymer Composites through the Incorporation of Ultralow Amounts of RGO@BTO Hybrid Nanosheets

Experimental and Theoretical Studies on Optical Properties of Tetra(Imidazole) of Palladium (II) Phthalocyanine

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