Carbon hybridized halloysite nanotubes for high-performance hydrogen storage capacities

Jin, Jiao; Fu, Liangjie; Yang, Huaming; Ouyang, Jing

doi:10.1038/srep12429

Cited by 80 publications

(53 citation statements)

References 43 publications

(60 reference statements)

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“…The P-doped multilayered graphene shows significantly higher BET surface area and high pore volume than RGO, GO and Graphite powder, thus signifying the important role for the coexistence of phosphoric acid in the synthesis in increasing the surface area and porosity [70] (see Figure 5 and Table 1). The typical HRSEM images of the heteroatom (P) doped multilayered graphene can be seen in Figure 6.…”

Section: Resultsmentioning

confidence: 99%

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Heteroatom Doped Multi-Layered Graphene Material for Hydrogen Storage Application

Ariharan¹,

Viswanathan²,

Nandhakumar³

2016

Graphene

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A variety of distinctive techniques have been developed to produce graphene sheets and their functionalized subsidiaries or composites. The production of graphene sheets by oxidative exfoliation of graphite can be a suitable route for the preparation of high volumes of graphene derivatives. P-substituted graphene material is developed for its application in hydrogen sorption in room temperature. Phosphorous doped graphene material with multi-layers of graphene shows a nearly ~2.2 wt% hydrogen sorption capacity at 298 K and 100 bar. This value is higher than that for reduced graphene oxide (RGO without phosphorous).

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Section: Resultsmentioning

confidence: 99%

“…Heteroatom doping, high surface areas are favorable for promoting hydrogen sorption [47] [51] [70] (see Table 1). The phosphorous-doped graphene material shows enhanced hydrogen sorption capacity compared to their counterpart namely reduced graphitic oxide materials (without P).…”

Section: Resultsmentioning

confidence: 99%

Heteroatom Doped Multi-Layered Graphene Material for Hydrogen Storage Application

Ariharan¹,

Viswanathan²,

Nandhakumar³

2016

Graphene

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“…To improve the properties of MMT, the pillaring process is often performed, which involves exchanging the interlayer cations with organic or inorganic cations. Various mineral composite materials are used widely in catalysis, energy storage, and wastewater treatment together with supporting minerals such as kaolinite [26][27][28], halloysite [29][30][31][32][33][34], attapulgite [35][36][37], talc [38], expanded perlite [39], and tailings [40][41][42]. MoS 2 and most MoS 2 composites are hydrophobic and cannot be dispersed in water.…”

Section: Nano Resmentioning

confidence: 99%

Hierarchical MoS2 intercalated clay hybrid nanosheets with enhanced catalytic activity

et al. 2016

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Emerging hierarchical MoS 2 /pillared-montmorillonite (MoS 2 /PMMT) hybrid nanosheets were successfully prepared through facile in-situ hydrothermal synthesis of MoS 2 within the interlayer of cetyltrimethylammonium bromide PMMT, and their catalytic performance was evaluated by the reduction reaction of 4-nitrophenol (4-NP) using NaBH 4 as a reductant. Microstructure and morphology characterization indicated that MoS 2 /PMMT exhibited hybrid-stacked layered structures with an interlayer spacing of 1.29 nm, and the MoS 2 nanosheets were intercalated within the montmorillonite (MMT) layers, with most of the edges exposed to the outside. The catalytic activity and stability of MoS 2 /PMMT were both enhanced by the MMT. With the MoS 2 /PMMT as the catalyst, the apparent reaction rate constant of the 4-NP reduction was 0.723 min −1 and was maintained at ~0.679 min −1 after five reaction cycles. The structural evolution of MoS 2 /PMMT and the possible catalysis mechanism for the reduction reaction of 4-NP were investigated. The as-prepared MoS 2 /PMMT hybrid nanosheets are promising candidates for catalytic application in the water-treatment and biomedical fields. The strategy developed in this study can provide insights for designing hybrid nanosheets with diverse heterogeneous two-dimensional (2D) nanomaterials.

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“…Significant attention has been focused on the application of halloysite into many fields in these years, such as the applications in chemically blocked and controlled release [16][17][18][19][20][21], biomimetic nanoreactors [22][23][24], medicine carrier and biological antibacterial materials [25][26][27], catalysis supports [28][29][30][31][32], hydrogen storage matrix [33][34][35], food packaging applications [36], mineral templates and other functional materials [37][38][39]. Many reviews have summarized the characters and application fields of Hal minerals [40,41], for example, Yuan et al [42] introduced the main structural features and properties of halloysite, especially focused on the structure and morphology of halloysite and its changes, the formation mechanism of tubular structures, the physico-chemical properties, chemical modification of surfaces, and halloysite-based advanced materials.…”

Section: Introductionmentioning

confidence: 99%

Mineralogy and Physico-Chemical Data of Two Newly Discovered Halloysite in China and Their Contrasts with Some Typical Minerals

Ouyang

Zhang

et al. 2018

Minerals

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Abstract:We report in this article the systematical acquisition of physico-chemical parameters for two newly discovered halloysite (Hal) minerals from Shiyan and Tongling in China. As the comparative reference, the data from Hal in Linfen, Chenxi, and the salt lake in Australia (samples were abbreviated as Hal-AU, Hal-SY, Hal-LF, Hal-CX and Hal-TL, respectively) were also investigated using X-ray diffraction (XRD), scanning electronic microscopy (SEM), transmission electron microscopy (TEM), Fourier transformation infrared spectroscopy (FTIR), differential scanning calorimetry-thermogravimetry (DSC-TG), X-ray fluorescence, surface zeta potential measurements and N 2 adsorption-desorption isotherms. The newly found minerals were probably formed in hydrothermal leaching and sedimentary circumstances. The Hal-SY contains 7 Å-halloysite and dickite, while Hal-TL contains 10 Å-halloysite with some alunite (similar with Hal-CX). Other impurities found in the samples include quartz, gibbsite, iron oxide and anatase. All of them showed tubular morphology with diameter in the range of 30-90 nm and a length of 300-2500 nm, while the Hal-SY has the largest inner diameter to about 150 nm. Specific surface areas varied from 26.0~59.0 m 2 ·g −1 . In addition, maximum CEC (cation exchange capacity) of the newly found Hal was about 40 cmol/kg, while that of Hal-AU was relatively low (8 cmol/kg) due to the sedimentary nature of Salt Lake circumstances. The surface charge was predominantly negative over most of the relevant pH range (>2.0). It can be concluded that the different morphology and impurity content of halloysite will greatly affect the surface area, pore volume, and cationic exchange capacity (CEC) of the minerals.

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Carbon hybridized halloysite nanotubes for high-performance hydrogen storage capacities

Cited by 80 publications

References 43 publications

Heteroatom Doped Multi-Layered Graphene Material for Hydrogen Storage Application

Heteroatom Doped Multi-Layered Graphene Material for Hydrogen Storage Application

Hierarchical MoS2 intercalated clay hybrid nanosheets with enhanced catalytic activity

Mineralogy and Physico-Chemical Data of Two Newly Discovered Halloysite in China and Their Contrasts with Some Typical Minerals

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