Synthesis of Discrete and Dispersible Hollow Carbon Nanospheres with High Uniformity by Using Confined Nanospace Pyrolysis

Abstract

Kern‐Schale‐Schale: Die stufenweise Oberflächenbeschichtung monodisperser Polystyrol(PS)‐Nanokügelchen mit einem phenolhaltigen Polymer (PF) und mit Siliciumdioxid resultiert in dualen PS@PF@SiO2‐Kern‐Schale‐Strukturen (siehe Bild), deren Pyrolyse einheitliche, diskrete und dispergierbare hohle Kohlenstoff‐Nanokügelchen (HCSs) ergibt. Die äußere Siliciumdioxidschale wirkt als Nanoreaktor, der das Verkleben und Zusammenbacken der Polymer‐ und Kohlenstoffpartikel verhindert.

Uniform fibrous-structured hollow mesoporous carbon spheres for high-performance supercapacitor electrodes

“…In the past few years, ZnO, Ni(OH)2, sepiolite, zeolite and silica have been widely used as hard templates [30][31][32][33]. Also, various types of carbon precursors have been developed due to their readily carbonizable properties, such as sucrose, furfuryl alcohol and phenol formaldehyde resin [34,35]. However, hollow carbon spheres with unique structure and textural properties which are potential for achieving good conductivity and high capacitance are still scarce, it is therefore promising to develop facile and cheap routes to prepare this kind of materials.…”

Dual-template synthesis of novel pomegranate-like hollow carbon nanoparticles with improved electrochemical performance for Li-ion batteries

“…Various hard templates are infiltrated or deposited with carbon precursors and then carbonized at a high temperature under inert atmosphere followed by etching the templates and then generating HSCNs [18e20]. To avoid the complex synthesis route of the hard template method, soft template synthesis routes have been reported [14,21], in which hollow polymeric spheres act as both template and carbon sources [21], or the F127 block copolymers as template and acyclodextrin as carbon source [14]. However, as most of the hard and soft templates are inactive, HSCNs do not possess graphitic shells, which hinders the improvement of electron transfer and structural stability.…”

Hierarchically porous SiO2/C hollow microspheres: a highly efficient adsorbent for Congo Red removal

“…For instance, uniform HPCHMs were synthesized using a hard template and conned nanospace pyrolysis method. 1 Recently, monodispersed mesoporous carbon hollow spheres were successfully prepared by a facile one-step method. 6 The synthesized hollow carbon spheres possessed a high specic surface area of 2106-2225 m 2 g À1 and large pore volume of 1.95-2.53 cm 3 g À1 with an open interconnected mesoporous shell, which are benecial for effective diffusion and adsorption of molecules as well as loading active guest species.…”

“…[1][2][3][4] HPCHMs as a promising material can be widely used in many elds such as adsorption, 1 catalysis, 3 fuel cells 4 and nano devices. 5 Many strategies have been developed to design and prepare HPCHMs.…”

“…5 Many strategies have been developed to design and prepare HPCHMs. [1][2][3][4][5][6][7] Among them, hard-template and so-template methods have been widely adopted to fabricate HPCHMs. For instance, uniform HPCHMs were synthesized using a hard template and conned nanospace pyrolysis method.…”