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[IEEE 2018 19th International Conference on Electronic Packaging Technology (ICEPT) - Shanghai (2018.8.8-2018.8.11)] 2018 19th International Conference on Electronic Packaging Technology (ICEPT) - Facile Preparation of Silver Nanoparticles Decorated Boron Nitride Nanotube Hybrids
摘要： Blending polymer with thermally conductivity Metal nanoparticles-fillers, which can reducing ITR at a high fillers contents, have recently attracted intense attention. The interfacial thermal resistance (ITR) between fillers at a high filler doping contents causes a limited improvement of thermal conductivity. Fortunately, silver nanoparticles decorated fillers have potential to improve thermally conductivity by reducing ITR between fillers at a high filler content. However, how to fabricate pony-size silver nanoparticles decorated fillers hybrids simply is still a challenge. Herein, we report a facile synthesis of decorating boron nitride nanotube (BNNT) hybrids with AgNP (10-20 nm) by replacing between the Ag+ and -OH on the defect sites of BNNT. This strategy is a viable way to prepare metal nanoparticles-fillers which can be used in highly thermal conductivity.
关键词： boron nitride nanotube,thermal conductivity,hybrids,silver nanoparticles,interfacial thermal resistance
更新于2025-09-09 09:28:46
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Synthesis and characterization of MnWO4/TmVO4 ternary nano-hybrids by an ultrasonic method for enhanced photocatalytic activity in the degradation of organic dyes
摘要： In this study, novel MnWO4/TmVO4 ternary nano-hybrids were synthesized effectively via a simple sonochemical method. The products were characterized in detail with the use of modern analytical techniques including XRD, EDX, TEM, DRS, BET, PL, and VSM. To the authors’ best knowledge, this is the first report on the synthesis and photocatalytic performance of MnWO4/TmVO4 ternary nano-hybrids in the degradation of rhodamine B (Rh B), 2-naphthol (Na), phenol red (Ph R), and eosin Y (EY) under visible light. Based on the degradation results, MnWO4/TmVO4 is shown to have higher photodegradation ability than pure TmVO4 or MnWO4 nanoparticles. It was also found that maximum degradation (99.2%) is achieved in the case of Rh B dye.
关键词： Semiconductors,MnWO4/TmVO4,Ternary nano-hybrids,Photocatalysis,Luminescence
更新于2025-09-04 15:30:14
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The First 2D Hybrid Perovskite Ferroelectric Showing Broadband White-Light Emission with High Color Rendering Index
摘要： Luminescent ferroelectrics have attracted considerable attention in terms of integrated photoelectronic devices, most of which are focused on the multicomponent systems of rare-earth doping ferroelectric ceramics. However, bulk ferroelectricity with coexistence of strong white-light emission, especially in the single-component system, remains quite rare. Here, a new organic–inorganic hybrid ferroelectric of (C4H9NH3)2PbCl4 (1) is reported, adopting a 2D layered perovskite architecture, which exhibits an unprecedented coexistence of notable ferroelectricity and intrinsic white-light emission. Decent above-room-temperature spontaneous polarization of ≈2.1 μC cm?2 is confirmed for 1. Particularly, it also exhibits brilliant broadband white-light emission with a high color-rendering-index up to 86 under UV excitation. Structural analyses indicate that ferroelectricity of 1 originates from molecular reorientation of dynamic organic cations, as well as significant structural distortion of PbCl6 octahedra that also contribute to its white-light emission. This work paves an avenue to design new hybrid ferroelectrics for multifunctional application in the photoelectronic field.
关键词： organic–inorganic hybrids,ferroelectrics,white-light emissions,perovskites,2D materials
更新于2025-09-04 15:30:14
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Humidity-Driven Mechanical and Electrical Response of Graphene/Cloisite Hybrid Films
摘要： Humidity-driven and electrically responsive graphene/cloisite hybrid films are obtained by casting water dispersions of graphene oxide and cloisite Na+. Coupling hydrophilicity and a high water vapor barrier in a homogenous film enables to realize humidity-driven actuators which exploit the water gradient generated across the film section under asymmetric exposure to humidity. The hybrid films are self-standing, flexible, and exhibit fast humidity-triggered bidirectional bending up to 75°, which is tuned by varying the relative amount of the two components. Up to 60% of the bending angle can be preserved at the steady state, providing a large and reliable response to humidity. Moreover, thermal treatment results in the reduction of graphene oxide, endowing the films with humidity-dependent electrical conductivity, which increases from 1.5 × 10?6 S at 20% relative humidity (RH) up to 2.7 × 10?5 S at 90% RH. The films are used to realize a humidity-sensitive electrical switching system in which the reversible actuation is due to water desorption induced by the Joule effect. Due to their ease of preparation and tunable properties, this new class of graphene-based materials is suitable for the realization of humidity-driven and electrically responsive actuators and sensors.
关键词： graphene/cloisite hybrids,humidity sensing,humidity-triggered actuators,reversible bending
更新于2025-09-04 15:30:14
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Facile Production of Mesoporous WO3-rGO Hybrids for High-Performance Supercapacitor Electrodes: An Experimental and Computational Study
摘要： This work explored a promising supercapacitor electrode material (WO3-rGO hybrids) synthesized by simplistic one-pot hydrothermal synthesis route. Various analytical studies (X-ray diffraction study, Raman spectroscopy, field emission scanning electron microscopy, transmission electron microscopy, X-ray photo-electron spectroscopy, Brunauer-Emmett-Teller analysis) were employed in furtherance to explore the structural, morphological, compositional and surface areal property of the prepared materials. The enhancement in electrochemical supercapacitive properties were evaluated from pure hexagonal phased WO3 to the various hybrids depending upon the concentration of GO introduced into it, using cyclic voltammetry, galvanostatic charge/discharge and electrochemical impedance spectroscopy. The WG-80 composite revealed the high-rise in capacitance value of 801.6 F/g overcoming the individual capacitance of rGO (71.11 F/g) and WO3 (94.22 F/g) at a current density of 4 A/g with a good cycling stability (75.7 %) over 5000 cycles. We have presented quantum capacitance from ab-initio calculations and provided theoretical explanation from the orbital interactions.
关键词： WO3-rGO hybrids,Density functional theory,Hydrothermal method,Supercapacitor
更新于2025-09-04 15:30:14