No abstract

These supernormal natures endow AMC nanoparticles with indispensable function ranging from biomedicine, drug loading, and release to gas storage and catalytic conversion, playing a key role in guiding the construction of sophisticated superstructures, nanodevices, and biomedical carrier. [7][8][9][10][11][12] To date, a series of mesoporous carbon (MC) nanoparticles with diverse morphologies, i.e., Janus structure, solid sphere, honeycombed, bowl-shaped, red cell-like, onion-like, flask-like, nanoring, etc., have been reported, which show potential application for drug loading and delivery, energy storage, and conversion as well as electrocatalysis. [13][14][15][16][17][18][19][20] Apart from the outer morphology variation, the internal porechannel structural embellishment of MC nanoparticles is also crucial for strengthening the corresponding performance determined by the structures, thereby further satisfying the requirements for real-world applications. [21][22][23][24][25][26] Therefore, MC nanoparticles with advanced interior structural modules, i.e., internal gridded, core-shell, internal anisotropic, multichambered, multicored, and hollow structure, [27][28][29][30][31][32][33] or with different pore structures such as orderly arranged, hierarchical, dendritic and radial, dual-mesoporous and channel connected structure, [34][35][36][37][38] etc., have clear internal cavities and pore structures. They can be employed as the devices for micro storages and biomedical carriers, which can not only activate various guest molecules such as electroactive components and catalysts but also enhance the adsorption and drug loading capacity. [39][40][41] Recently, a remarkable one-pot solution method for the fabrication of diverse AMC nanoparticles is the template-guided emulsion strategy. The oil/water (O/W) microemulsion can not only furnish the assembly interface acting as a template to control the particle morphology but also provide the stable reaction space to affect the particle size. [3,4,42] Furthermore, to fabricate various particles with tunable structures, surface textures, and different sizes, scientists have been devoting to controllable regulation of the synthesis parameters to adjust the interfacial tension of emulsions (e.g., solvent polarity, surfactant types, polymerization temperature, etc.). [43,44] In addition, the Anisotropic mesoporous carbon (AMC) nanoparticles with asymmetric external morphologies, topological internal structure, and superior performance of carbon species are attracting great attention because of their seductive features differentiating them from symmetric nanoparticles. However, a bewildering challenge but crucial desire remains to endow them with flexibly tunable morphology and pore structure. Herein, a dual/triple-templating evolved emulsion strategy for tunable fabrication of AMC nanoparticles with distinctive defined structure by interface-energy-induced self-assembly is first reported based on a brand-new mechanism. It describes the possible formation process of the conc...

The preparation of mesoporous carbonaceous materials with particularly adjustable morphology is currently a hot area of research in mesoporous materials. Herein, a novel approach is reported for the construction of N-doped multicavity mesoporous carbon nanoparticles (NMMCNs) based on the “emulsion swelling–acid curing mechanism” using a nanoemulsion assembly method under a high-speed shearing force. Intriguingly, this approach adopted a novel acid (HCl) curing procedure. Impressively, the morphology evolution from an internal multicavity to a single cavity and then to a non-cavity interior structure could be accomplished by simply varying the synthesis parameters. Additionally, this synthesis approach ingeniously overcame the following problems: (i) technically, the employment of high temperatures and high pressures in traditional hydrothermal reaction curing environments is avoided; (ii) this approach removes the requirement for silicon coating, which provides a limited pyrolysis condition, to obtain a multi-chamber structure. Resveratrol (Res) is an insoluble natural medicine and was successfully loaded into NMMCNs, thereby the Res–NMMCNs delivery system was constructed. Importantly, the Res–NMMCNs delivery system could still retain the antitumor and antioxidant activity of Res in vitro.