Rapid microwave-assisted synthesis of nitrogen-functionalized hollow carbon spheres with high monodispersity

Arif, Aditya Farhan; Kobayashi, Yuma; Balgis, Ratna; Ogi, Takashi; Iwasaki, Hideharu; Okuyama, Kikuo

doi:10.1016/j.carbon.2016.05.048

Cited by 43 publications

(45 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As shown in Fig. 6f and Additional file 1 : Table S2, the NMCSs-600-based SSD has a great advantages compared with other CSs based supercapacitor devices, such as core-shell ultramicroporous@microporous carbon nanospheres [ 23 ], N-doped carbon nanospheres [ 37 – 39 ], N and O co-doped carbon microspheres [ 40 ], hollow CSs [ 41 ], graphitic hollow CSs [ 42 ], N-doped hollow CSs [ 43 , 44 ] and nitrogen-phosphorus co-doped hollow carbon microspheres [ 15 ]. Furthermore, two as-fabricated NMCSs-600-based SSDs are connected in series could power a red light emitting diode (inset of Fig.…”

Section: Resultsmentioning

confidence: 99%

Facile Synthesis of Nitrogen-Doped Microporous Carbon Spheres for High Performance Symmetric Supercapacitors

et al. 2018

View full text Add to dashboard Cite

Nitrogen-doped microporous carbon spheres (NMCSs) are successfully prepared via carbonization and KOH activation of phenol-formaldehyde resin polymer spheres synthesized by a facile and time-saving one-step hydrothermal strategy using triblock copolymer Pluronic F108 as a soft template under the Stöber-like method condition. The influence of the ethanol/water volume ratios and carbonation temperatures on the morphologies, pore structures and electrochemical performances of the prepared NMCSs are investigated systematically. The optimal NMCSs have a large specific surface area of 1517 m2 g− 1 with a pore volume of 0.8 cm3 g− 1. The X-ray photo-electron spectroscopy analysis reveals a suitable nitrogen-doped content of 2.6 at.%. The as-prepared NMCSs used as supercapacitor electrode materials exhibit an outstanding specific capacitance of 416 F g− 1 at a current density of 0.2 A g− 1, also it shows an excellent charge/discharge cycling stability with 96.9% capacitance retention after 10,000 cycles. The constructed symmetric supercapacitors using PVA/KOH as the gel electrolyte can deliver a specific capacitance of 60.6 F g− 1 at current density of 1 A g− 1. A maximum energy density of 21.5 Wh kg− 1 can be achieved at a power density of 800 W kg− 1, and the energy density still maintains 13.3 Wh kg− 1 even at a high power density of 16 kW kg− 1. The results suggest that this work can open up a facile and effective way to synthesize the NMCSs for electrode materials of high performance energy storage devices.Electronic supplementary materialThe online version of this article (10.1186/s11671-018-2713-0) contains supplementary material, which is available to authorized users.

show abstract

Section: Resultsmentioning

confidence: 99%

Facile Synthesis of Nitrogen-Doped Microporous Carbon Spheres for High Performance Symmetric Supercapacitors

et al. 2018

View full text Add to dashboard Cite

show abstract

“…fullerenes, graphite, graphene and carbon nanostructures have been used for different advanced applications such as batteries, energy and hydrogen storage systems, catalyst, sensors, membranes, etc. [24][25][26][27][28][29]. Carbon hollow spheres (CHSs) represent a new class of carbon nanostructures attracting substantial attention due to its exceptional characteristics such as excellent mechanical strength and thermal conductivity as well as tunable shell structure, porosity, thickness and size [29,30], making them excellent candidates for high-tech applications such as supercapacitors [31], lithiumsulfur batteries [32,33], fuel cells, solar cells and nanoelectrodes [8,[34][35][36][37].…”

Section: Incorporation Of the Organic Inhibitors In Protective Overlamentioning

confidence: 99%

Fabrication and characterization of graphene-based carbon hollow spheres for encapsulation of organic corrosion inhibitors

Haddadi

Ramazani

Mahdavian

et al. 2018

Chemical Engineering Journal

109

View full text Add to dashboard Cite

In this work, we synthesized carbon hollow spheres (CHSs) using the silica templating method, encapsulated 2-mercaptobenzimidazole (MBI) inhibitor in the CHSs and evaluated their corrosion inhibition performance upon exposure of mild steel to a saline solution containing the released inhibitor. The effects of silica template surface modification on the CHS structure was evaluated, while the structure and morphology of the synthesized CHS was analyzed using field emission scanning electron microscope (FE-SEM), transmission electron microscope (TEM), Raman spectroscopy and X-ray diffraction (XRD) spectroscopy. Furthermore, thermogravimetric analysis (TGA), energy-dispersive X-ray spectroscopy mapping (EDS-mapping) and UV-vis were employed to evaluate the MBI release from carbon capsules at different pH values. Corrosion protection performance of the doped CHS was evaluated using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. The results showed tunability of the shell structure between an amorphous carbon and graphene structure using surface modification of the silica templates. Moreover, the MBI release from the CHSs showed to be pH-dependent allowing smart protection of mild steel when exposed to corrosive conditions.

show abstract

“…The fabrication of nano‐resoles typically requires a reaction period of at least 24 h. To improve the synthesis efficiency, Pol and co‐workers reported an ultrafast synthesis of monodisperse RF nanospheres within 5 min (Figure , VI), Ultrasonic irradiation was utilized to initiate the polymerization and accelerate the gelation speed of RF precursors. This finding is significant in improving the fabrication efficiency of RF nanospheres and opens the door, if its efficacy could be further demonstrated at a larger scale, for industrial applications of resole/resole‐derived nanomaterials …”

Section: Development Of Nano‐resolesmentioning

confidence: 90%

“…This finding is significant in improving the fabrication efficiencyo fR Fn anospheres and opens the door,i fi ts efficacy could be further demonstrated at al arger scale, for industrial applicationso fr esole/resole-derived nanomaterials. [29]…”

Section: Development Of Nano-resolesmentioning

confidence: 99%

Nano‐resoles‐Enabled Elegant Nanostructured Materials

Zhang

Yang

2018

Chemistry A European J

View full text Add to dashboard Cite

Since the extension of the Stöber method traditionally used in the synthesis of silica nanoparticles into the fabrication of resorcinol-formaldehyde nanospheres in 2011, significant progresses have been achieved in this exiting area of nano-resole-enabled synthesis of elegant nanostructures with versatile compositions and promising applications in various fields. To date, there are few reviews focused on this topic. In this minireview, we aim to provide an overview on recent developments, with the emphasis on nano-resoles as an enabling strategy in the synthesis of innovative materials. The history of nano-resoles and their distinct roles classified into four functions will be introduced. Clear understanding into this research field is vital for achieving rational design and controllable synthesis of a new generation of nano-resoles and their derived nanostructures.

show abstract

Rapid microwave-assisted synthesis of nitrogen-functionalized hollow carbon spheres with high monodispersity

Cited by 43 publications

References 33 publications

Facile Synthesis of Nitrogen-Doped Microporous Carbon Spheres for High Performance Symmetric Supercapacitors

Facile Synthesis of Nitrogen-Doped Microporous Carbon Spheres for High Performance Symmetric Supercapacitors

Fabrication and characterization of graphene-based carbon hollow spheres for encapsulation of organic corrosion inhibitors

Nano‐resoles‐Enabled Elegant Nanostructured Materials

Contact Info

Product

Resources

About