Enhanced through-plane thermal conductivity in Polymer nanocomposites by constructing graphene-supported BN nanotubes

Li, Xu; Li, Ya; Alam, Mofasserul; Miao, Jibin; Chen, Peng; Xia, Ru; Wu, Bin; Qian, Jiasheng

doi:10.1039/d0tc01871f

Cited by 31 publications

(20 citation statements)

References 44 publications

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“…The magnifying spectrum of S 2p (Figure c) was deconvoluted into two peaks at 164 and 169.5 eV, and the obtained peaks were corresponding to the 2p 3/2 and 2p 1/2 energy states . The high-resolution C 1s spectrum (Figure d) resolved into two peaks at 284.5 and 285.7 eV, which confirm the presence of C–C and C–O–C in the nanocomposite …”

Section: Resultsmentioning

confidence: 65%

Highly Selective Electrochemical Sensor Based on Gadolinium Sulfide Rod-Embedded RGO for the Sensing of Carbofuran

Mariyappan

Keerthi

Chen

2021

J. Agric. Food Chem.

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Nowadays, a lot of pesticides have been used in the agriculture field due to the global demand for food production. Carbofuran (CF) is the most commonly used carbamate compound that is responsible for the highest toxicity to humans compared to any other pesticide used in agricultural settings. Thus, rapid, portable, and low-cost sensors are needed for the detection of CF in the environment and food samples. Herein, we have successfully developed an electrochemical sensor using a glassy carbon electrode (GCE) modified with gadolinium sulfide (Gd 2 S 3 ) and reduced graphene oxide (RGO) composite for the detection of carbofuran (CF). A novel Gd 2 S 3 /RGO composite was prepared by the facile hydrothermal route and confirmed by morphological and structural analyses such as field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), energy-dispersive X-ray (EDX), powder X-ray diffraction (XRD), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS), and also the formation mechanism of Gd 2 S 3 /RGO composite was discussed. The desired electrical conductivity of Gd 2 S 3 was enhanced by the RGO, which was estimated from the electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). Electrochemical studies demonstrated that the developed Gd 2 S 3 /RGO sensor was highly sensitive and selective to CF. In addition, the Gd 2 S 3 /RGO sensor exhibits a low detection limit (LOD) and the linear ranges were 0.0128 and 0.001−1381 μM, respectively, for CF detection under optimized experimental conditions. Moreover, we also investigated the practical applicability of the sensor for CF detection in the environment and food samples.

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Section: Resultsmentioning

confidence: 65%

Highly Selective Electrochemical Sensor Based on Gadolinium Sulfide Rod-Embedded RGO for the Sensing of Carbofuran

Mariyappan

Keerthi

Chen

2021

J. Agric. Food Chem.

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“…Then, GO nanosheets can be interconnected to each other and form a continuous and robust heat-conduction network in the PS matrix when a suitable amount of GO is introduced. For instance, upon increasing the GO content from 1 to 3 wt %, PS nanospheres are anchored uniformly and tightly on the surface of the interconnected GO nanosheets (Figure d and Figure S2), which can significantly reduce the ITR and offer high-flux heat conduction . When the GO content is over 3 wt %, the entanglements of GO nanosheets in GO-4@PS and GO-5@PS composites are observed in Figure e and Figure f, respectively.…”

Section: Results and Discussionmentioning

confidence: 97%

Directly Grown Polystyrene Nanospheres on Graphene Oxide Enable Efficient Thermal Management

Han

et al. 2021

Ind. Eng. Chem. Res.

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Polymer-based composites with high heat dissipation performance are significant for the thermal management of modern electronic devices. However, it is still a challenge to improve polymer matrix/thermal conductive filler interfacial incompatibility. Here, a onepot in situ growth strategy is adopted to directly grow polystyrene (PS) on the surface of graphene oxide (GO) nanosheets to improve their interfacial adhesion. The as-obtained GO@PS composite shows a low contact thermal resistance and a high-flux heat conduction. As a result, the thermal conductivity (TC) of the GO@PS composite containing 5 wt % GO is 1.582 W/mK. Compared to the neat PS matrix, the TC enhancement efficiency at per 1 wt % GO addition achieves 151%, which is superior to the reported results of PS-based composites. Meanwhile, the GO@PS composite has a rapid response of surface temperature and excellent thermal stability. Therefore, this work can be a general method for addressing the interface challenges of conventional polymer composites, which provide a guided thought for the establishment of the polymer-based composite with a satisfactory TC enhancement coefficient.

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“…E‐G‐BNNT was found to be an ideal thermal conductive filler for enhancing the TC of the PVDF matrix. [ 85 ] TC of the composite reached 3.12 W m −1 K −1 with a loading of 15 wt% of the filler. The interfacial thermal resistance of the graphene layer was decreased due to the formation of CN covalent bond at the BNNT and E‐G interface that gave a phonon conductive pathway for heat transfer between graphene layers.…”

Section: Polymer Nanocomposites Based On Bnnt Hybrid Fillersmentioning

confidence: 99%

“…Li et al. [ 85 ] demonstrated the synthesis and exfoliation of graphene (E‐G)‐boron nitride nanotube (E‐G‐BNNT) hierarchical structures by the in situ covalent growth of BNNT on the E‐G surface. The E‐G‐BNNT hybrid was obtained by the 5 h stirring of urea and boric acid aqueous solution with ultrasonicated E‐G aqueous dispersion.…”

Section: Synthesis Of Bn Hybrid Nanofillersmentioning

confidence: 99%

Recent Advances in Boron Nitride Based Hybrid Polymer Nanocomposites

Aparna

Sethulekshmi

Jayan

et al. 2021

Macro Materials & Eng

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Boron nitride (BN) is an eminent inorganic compound having many interesting characteristics such as improved oxidation resistance, mechanical strength, good thermal conductivity (TC), higher bandgap, high chemical stability, thermal stability, high hydrophobicity, and electrical insulation. The use of BN as a filler in polymers is a well‐established strategy to tailor the properties of polymer composites. Recent studies depict an interesting urge to reap the synergistic effect of various nanofillers with BN in the form of hybrids. Hence the consolidation of the works on BN based hybrid fillers would definitely attract researchers so that these new filler systems could be transformed into useful polymer nanocomposites in future. This review article focuses on the synthesis and characterization of various boron nitride based hybrids in detail. Moreover, the review also throws light on different BN hybrid reinforced polymer nanocomposites (PNCs) and their thermal, electrical, electronic as well as biomedical applications in a detailed manner. Thus the review anticipates serving as a tool toward understanding the recent trends in the field of boron nitride hybrid based ternary polymer composites.

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Enhanced through-plane thermal conductivity in Polymer nanocomposites by constructing graphene-supported BN nanotubes

Abstract: A graphene-supported BNNT filler is fabricated via the in situ implanting of BNNTs on graphene, with the formation of high thermal conductivity nanocomposites via hot-pressing.

Cited by 31 publications

References 44 publications

Highly Selective Electrochemical Sensor Based on Gadolinium Sulfide Rod-Embedded RGO for the Sensing of Carbofuran

Highly Selective Electrochemical Sensor Based on Gadolinium Sulfide Rod-Embedded RGO for the Sensing of Carbofuran

Directly Grown Polystyrene Nanospheres on Graphene Oxide Enable Efficient Thermal Management

Recent Advances in Boron Nitride Based Hybrid Polymer Nanocomposites

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