The syntheses of a family highly ordered mesoporous polymers and carbon frameworks from organic−organic assembly triblock copolymers with soluble, low-molecular-weight phenolic resin precursors (resols) by an evaporation induced self-assembly strategy have been reported in detail. members include two-dimensional hexagonal (space group, p6m), three-dimensional bicontinuous (Ia3̄d), body-centered cubic (Im3̄m), lamellar mesostructures, which are controlled simply adjusting the ratio...

Highly ordered mesoporous polymer−silica and carbon−silica nanocomposites with interpenetrating networks have been successfully synthesized by the evaporation-induced triconstituent co-assembly method, wherein soluble resol polymer is used as an organic precursor, prehydrolyzed TEOS inorganic triblock copolymer F127 a template. It proposed for first time that “reinforced concrete”-structured frameworks. By adjusting initial mass ratios of to resol, we determined obtained possess continuous...

Abstract The detrimental shuttle effect in lithium–sulfur batteries mainly results from the mobility of soluble polysulfide intermediates and their sluggish conversion kinetics. Herein, presented is a multifunctional catalyst with merits strong polysulfides adsorption ability, superior activity, high specific surface area, electron conductivity by situ crafting TiO 2 ‐MXene (Ti 3 C T x ) heterostructures. uniformly distributed on MXene sheets act as capturing centers to immobilize...

We demonstrate, for the first time, application of ordered mesoporous carbons with large pore sizes prepared from surfactant-templating approach in efficient disposal wastewater containing bulky dye molecules. The adsorption amount (methylthionine chloride, fuchsin basic, rhodamine B, brilliant yellow, methyl orange, or Sudan G) is almost twice that activated carbon which mesopores contribute 100% to total surface area and volume. adsorbent has a high rate (>99.9%) low-concentration dyes,...

Supramolecular aggregate's self-assembling approach has derived diverse mesostructured inorganic solids. Recent progresses involve ordered mesoporous carbonaceous frameworks. This review paper summarizes the synthesis of polymers and carbons based on supramolecular aggregates as templates. Block copolymers are mainly introduced here. Both block themselves assembling with thermosetting resins have abilities to organize mesostructures. The understanding is formation arrangement molecules,...

Highly ordered mesoporous carbons and silicas with ultralarge accessible pores have been successfully synthesized by using laboratory-made poly(ethylene oxide)-b-polystyrene (PEO-b-PS) diblock copolymers as templates via the evaporation-induced self-assembly (EISA) approach. Resols tetraethyl orthosilicate (TEOS) serve carbon silica precursors, respectively. Small-angle X-ray scattering (SAXS) transmission electron microscopy (TEM) measurements show that (denoted C-FDU-18) possess face...

On the basis of consideration "host-guest" chemistry, interactions between guest molecules are highlighted in synthesis nonsiliceous mesoporous materials by "soft-template" and "hard-template" approaches. A generalized "acid-base pair" concept is utilized selecting appropriate to prepare highly ordered metal oxides, phosphates, borates with diversified structures. Mesoscopically polymer carbon frameworks uniformly large pore sizes derived from self-assembly an organic surfactant guest....

Array of light: Nanostructured arrays NaMF4 (M=rare earth metal) can be prepared by a hydrothermal method. The consist nanoparticles with well-controlled morphologies (tubes, disks, or rods), phases (cubic hexagonal), and sizes (80–900 nm). Multicolor upconversion fluorescence is realized in NaYF4 codoped Er3+ Yb3+ Tm3+ (see picture). Supporting information for this article available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2007/z702519_s.pdf from author. Please note:...

Heterogeneous palladium catalysts, which are supported on ordered mesoporous silica−carbon nanocomposites, have been applied in water-mediated coupling reactions of chlorobenzene without assistance any phase-transfer catalysts. Characterization by XRD, TEM, N2 sorption, FT-IR, TG, XPS, and H2 chemisorption techniques reveals the highly mesostructure, high surface areas (∼345 m2/g), large pore volumes (∼0.46 cm3/g), uniform mesopore sizes (∼6.3 nm), hybrid silicate carbonaceous compositions,...

Abstract The shuttling of soluble lithium polysulfides between the electrodes leads to serious capacity fading and excess use electrolyte, which severely bottlenecks practical Li‐S batteries. Here, selective catalysis is proposed as a fundamental remedy for consecutive solid‐liquid‐solid sulfur redox reactions. proof‐of‐concept Indium (In)‐based catalyst targetedly decelerates solid‐liquid conversion, dissolution elemental polysulfides, while accelerates liquid‐solid deposition into...

The continual needs for improved performances in applications derived by diversified compositions and mesostructures have pushed forward the development of mesoporous solids. nonionic-surfactant-templating approach has been a critical route this advancement. A large number nonionic surfactants widely used industries featured with low cost, toxicity, bio-degradation ordered microdomains can be utilized as effective templates to design synthesis abundant This feature article provides recent...

Abstract The lithium–sulfur (Li–S) battery is a next generation high energy density battery, but its practical application hindered by the poor cycling stability derived from severe shuttling of lithium polysulfides (LiPSs). Catalysis promising way to solve this problem, rational design relevant catalysts still hard achieve. This paper reports WS 2 –WO 3 heterostructures prepared in situ sulfurization WO , and controlling degree, structure controlled, which balances trapping ability (by )...

A coordination-assisted synthetic approach is reported here for the synthesis of highly active and stable gold nanoparticle catalysts in ordered mesoporous carbon materials using triblock copolymer F127 as a structure-directing agent, thiol-containing silane coordination HAuCl4 source, phenolic resin source. Upon carbonization, precursor becomes reduced to form monodispersed Au nanoparticles ca. 9.0 nm, which are entrapped or confined by "rigid" carbonaceous framework. Nanoparticle...

Abstract Understanding the catalytic mechanism of bimetallic nanocatalysts remains challenging. Here, we adopt an adsorbate mediated thermal reduction approach to yield monodispersed AuPd catalysts with continuous change Pd-Au coordination numbers embedded in a mesoporous carbonaceous matrix. The structure nanoalloys is well-defined, allowing for direct determination structure-property relationship. results show that Pd single atom and dimer are active sites base-free oxidation primary...

Abstract The shuttling of soluble lithium polysulfides (LiPSs) is one the main bottlenecks to practical use Li–S batteries. It reported that in situ synthesized ultrasmall vanadium nitride nanoparticles dispersed on porous nitrogen‐doped graphene (denoted VN@NG) as a catalytic interlayer solves this problem. size VN particles provide ample triple‐phase interfaces (the reactive among nanocatalyst, NG conductive substrate, and electrolyte) for accelerating LiPS conversion Li 2 S deposition,...

The evolution of model catalyst systems has experienced single-crystal surfaces different transition metals and crystal faces, two-dimensional with nanoparticles (NPs) deposited on a flat support surface, three-dimensional NPs loaded into the high-surface-area supports such as ordered mesoporous materials. latter two mimic nanoparticle properties in industrial catalysts. Ordered carbon (OMC) materials play unparalleled roles catalysis, energy storage, adsorption, chromatographic separation,...

A facile dual-templating approach is demonstrated to prepare hierarchically ordered macro-/mesoporous carbons. Monodispersed silica colloidal crystals are used as a hard template, amphiphilic triblock copolymer PEO−PPO−PEO soft and soluble resols carbon source. The procedure involves packing aging of microspheres, evaporation-induced organic−organic assembly mesostructures in the void thermosetting carbonization phenolic formaldehyde (PF), removal scaffolds by HF. obtained porous carbons...

Abstract Highly ordered mesoporous silicon carbide ceramics have been successfully synthesized with yields higher than 75 % via a one‐step nanocasting process using commercial polycarbosilane (PCS) as precursor and silica hard templates. Mesoporous SiC nanowires in two‐dimensional (2D) hexagonal arrays ( p 6 m ) can be easily replicated from SBA‐15 template. Small‐angle X‐ray diffraction (XRD) patterns transmission electron microscopy (TEM) images show that the long‐range regularity over...