Synthesis of ultra-small carbon nanospheres (&lt;50 nm) with uniform tunable sizes by a convenient catalytic emulsion polymerization strategy: superior supercapacitive and sorption performance

Tiwari, Vimal K.; Chen, Zhe; Gao, Fan; Gu, Zhiyong; Sun, Xueliang; Ye, Zhibin

doi:10.1039/c7ta01114h

Cited by 39 publications

(51 citation statements)

References 79 publications

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“…Carbonization of the polymer nanospheres following hydrothermal treatment rendered CNS. 42 Having relatively low specic surface area (524 m 2 g À1 ) and pore volume (0.84 cm 3 g À1 ) as shown below, CNS, directly, was unsuitable as the matrix for iron oxide. CO 2 activation was thus employed to yield A-CNS with dramatically enhanced surface area and pore volume.…”

Section: Synthesis and Characterization Of Carbon Nanosphere Matrixmentioning

confidence: 99%

“…In this article, carbon nanospheres (CNS) having unique hierarchical large meso-/macropore structures 42 are chosen for the rst time as the porous matrix to fabricate iron oxide nanocomposite adsorbents of high arsenic adsorption capacity. Iron oxide has been loaded onto the CNS matrix at different content (7-60 wt% Deionized water was puried by a Barnstead/Synbron Nanopure II purication system.…”

Section: -22mentioning

confidence: 99%

“…42 This technique involves the rst synthesis of highly cross-linked poly(1,3-diethynylbenzene) nanospheres (average size of ca. 24 nm) by catalytic emulsion polymerization of DEB, followed by hydrothermal treatment and subsequent carbonization.…”

Section: Synthesis Of Carbon Nanospheres (Cns) and Co 2 -Activated Camentioning

confidence: 99%

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Carbon nanosphere–iron oxide nanocomposites as high-capacity adsorbents for arsenic removal

Hmidi³

et al. 2017

RSC Adv.

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aIn the design of iron oxide-derived composite adsorbents for arsenic removal, the matrix selected for the encapsulation of iron oxide active material is critical to their arsenic adsorption performance. The ideal matrix should have a high surface area, high pore volume, and large pores that can accommodate the iron oxide nanoparticles while without causing the undesired pore filling or blockage. In this paper, we report the use of carbon nanospheres (size of ca. 28 nm) featuring high surface area, high pore volume, and hierarchical large mesopore/macropore structures resulting from nanosphere packing/aggregation as the matrix for the design of iron oxide composites. Iron oxide has been encapsulated into the carbon nanospheres with different contents (7-60 wt%). The composites have been systematically characterized for their structural, morphological, and textural properties, and investigated for their performance for arsenic adsorption. An optimum iron oxide content of 13 wt% has been established with high adsorption capacities of 416 and 201 mg g À1 achieved for As(III) and As(V), respectively, which are highest (for As(III)) or among the highest (for As(V)) reported thus far for iron oxide-based adsorbents. These are in contrast to the typically low adsorption capacities found with iron oxide composites involving other carbonbased matrices, such as activated carbon, carbon nanotubes, and mesoporous carbons. The results confirm the high potential of this class of composite adsorbents for arsenic removal. Meanwhile, the structure-performance relationship demonstrated herein is also of value to the further design of highperformance arsenic adsorbents.

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Section: Synthesis and Characterization Of Carbon Nanosphere Matrixmentioning

confidence: 99%

Section: -22mentioning

confidence: 99%

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Carbon nanosphere–iron oxide nanocomposites as high-capacity adsorbents for arsenic removal

Hmidi³

et al. 2017

RSC Adv.

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“…[4,5] Typical ASCs incorporate electrodes fabricated with iron-containing oxides (such as Fe 2 O 3 ,F e 3 O 4 ,Z nFe 2 O 4 ,a nd NiFe 2 O 4 )a se lectrode mate-rials, [6][7][8][9] which show high capacitance and energy density values, butthese metal oxidesusually have poor electrical conductivity anda re hydrophobic in nature. [10] Syntheticc arbon based materials, such as carbon nanotubes (CNTs), [11] graphene oxide, [12] graphene, [13] polymerderived carbons, [14][15][16] and metal-organic framework (MOF)-derived carbon, [17] are most studied as promisinge lectrode materials in SC applications. [10] Syntheticc arbon based materials, such as carbon nanotubes (CNTs), [11] graphene oxide, [12] graphene, [13] polymerderived carbons, [14][15][16] and metal-organic framework (MOF)-derived carbon, [17] are most studied as promisinge lectrode materials in SC applications.…”

Section: Introductionmentioning

confidence: 99%

Utilizing Waste Thermocol Sheets and Rusted Iron Wires to Fabricate Carbon–Fe₃O₄ Nanocomposite‐Based Supercapacitors: Turning Wastes into Value‐Added Materials

Vadiyar

Liu

2018

ChemSusChem

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The synthesis of porous activated carbon (specific surface area=1883 m g ), Fe O nanoparticles, and carbon-Fe O (C-Fe O ) nanocomposites from local waste thermocol sheets and rusted iron wires is demonstrated herein. The resulting carbon, Fe O nanoparticles, and C-Fe O composites are used as electrode materials for supercapacitor applications. In particular, C-Fe O composite electrodes exhibit a high specific capacitance of 1375 F g at 1 A g and longer cyclic stability with 98 % capacitance retention over 10 000 cycles. Subsequently, an asymmetric supercapacitor, namely, C-Fe O ∥Ni(OH) /carbon nanotube device, exhibits a high energy density of 91.1 Wh kg and a remarkable cyclic stability, with 98 % capacitance retention over 10 000 cycles. Thus, this work has important implications not only for the fabrication of low-cost electrodes for high-performance supercapacitors, but also for the recycling of waste thermocol sheets and rusted iron wires for value-added reuse.

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“…Li et al [75] prepared the core-shell nitrogen (N)-doped carbon spheres (@NCS) with good capacitive performances using dopamine and melamine as precursors. Ye et al [76] developed a scalable catalytic emulsion polymerization technique for highly efficient synthesis of ultrasmall carbon nanospheres. The obtained nanospheres possessed uniform tunable sizes ranging from 11 to 38 nm and exhibited outstanding high-rate capacitive performances.…”

Section: Carbon Nanospheresmentioning

confidence: 99%

Recent progress in carbon-based nanoarchitectures for advanced supercapacitors

Ran

Yang

Shao

2018

Adv Compos Hybrid Mater

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Supercapacitors, possessing high power densities, have been supposed to be one of the promising energy storage devices. Among various electrode materials of supercapacitors, carbon materials with porous nanostructure are considered as the emerging and promising candidates. This feature article reviewed the recent advances in different dimensional carbon-based nanoarchitectures for supercapacitors and particularly addressed the novel synthetic strategies to improve the electrochemical performances and corresponding theoretical foundations. The state-of-the-art progress was discussed, and diverse challenges for the electrochemical properties of carbon-based materials were propounded. Furthermore, perspectives for the design and assembly of advanced carbon-based nanoarchitectures for the supercapacitor electrode materials were highlighted.

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Synthesis of ultra-small carbon nanospheres (<50 nm) with uniform tunable sizes by a convenient catalytic emulsion polymerization strategy: superior supercapacitive and sorption performance

Abstract: Ultra-small carbon nanospheres with uniform tunable sizes (10–38 nm) have been synthesized and their superior supercapacitive and sorption properties demonstrated.

Cited by 39 publications

References 79 publications

Carbon nanosphere–iron oxide nanocomposites as high-capacity adsorbents for arsenic removal

Carbon nanosphere–iron oxide nanocomposites as high-capacity adsorbents for arsenic removal

Utilizing Waste Thermocol Sheets and Rusted Iron Wires to Fabricate Carbon–Fe₃O₄ Nanocomposite‐Based Supercapacitors: Turning Wastes into Value‐Added Materials

Recent progress in carbon-based nanoarchitectures for advanced supercapacitors

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Synthesis of ultra-small carbon nanospheres (<50 nm) with uniform tunable sizes by a convenient catalytic emulsion polymerization strategy: superior supercapacitive and sorption performance

Abstract: Ultra-small carbon nanospheres with uniform tunable sizes (10–38 nm) have been synthesized and their superior supercapacitive and sorption properties demonstrated.

Cited by 39 publications

References 79 publications

Carbon nanosphere–iron oxide nanocomposites as high-capacity adsorbents for arsenic removal

Carbon nanosphere–iron oxide nanocomposites as high-capacity adsorbents for arsenic removal

Utilizing Waste Thermocol Sheets and Rusted Iron Wires to Fabricate Carbon–Fe3O4 Nanocomposite‐Based Supercapacitors: Turning Wastes into Value‐Added Materials

Recent progress in carbon-based nanoarchitectures for advanced supercapacitors

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Utilizing Waste Thermocol Sheets and Rusted Iron Wires to Fabricate Carbon–Fe₃O₄ Nanocomposite‐Based Supercapacitors: Turning Wastes into Value‐Added Materials