Carbonaceous materials with high specific energy capacity are prime candidates for applications in rechargeable lithium batteries. The authors report the synthesis and characterization of ordered mesoporous carbon (CMK‐3), synthesized using silica as a template, reversible good charge–discharge cycle characteristics. performance CMK‐3 is compared that nanotubes, its superiority suggested to be related three‐dimensional structure CMK‐3.

Abstract Graphene oxide is extensively compounded with polymers toward a wide variety of applications. Less studied are few‐layer or multi‐layer highly crystalline graphene, both which herein named as graphene platelets. This article aims to provide the most recent advancements platelets and their polymer composites. A first focus lies on cost‐effective fabrication strategies – intercalation exfoliation work in relative mass scale, e.g., 5.3 g h −1 . As no heavy oxidization involved, have...

Abstract Semiconductor photocatalysis is currently attracting tremendous attention as it holds great potential to address the issues of energy shortage and environmental pollution. 2D materials are excellent candidates for owing their attractive structural electronic properties. However, practical applications still hindered due limitations, such fast electron–hole recombination poor redox ability, both which lead low efficiency photocatalytic reactions. Constructing a heterojunction most...

Abstract The convenience of injectable hydrogels that can provide high loading diverse phototherapy agents and further long‐time retention at the tumor site has attracted tremendous interest in simultaneous photothermal photodynamic cancer therapies. However, to incorporate into hydrogels, complex modifications are generally unavoidable. Moreover, these usually suffer from low efficiency work different irradiation wavelengths outside near infrared windows. Hence, a method for fabrication an...

Abstract The huge consumption of alkali during biomass‐derived porous carbon production leads to pollution and high carbon‐emission. This study employs the concept Fenton chemistry achieve hierarchical biomass materials with a remarkably specific surface area 3440 m 2 g −1 double activation efficiency compared traditional process. optimized electrode demonstrates exceptional capacitance 425.2 F at current density 0.1 A great rate performance (286.1 100 ) in 6 KOH electrolyte. enabled...

A sonochemical method has been successfully used in order to incorporate MnO2 nanoparticles inside the pore channels of CMK-3 ordered mesoporous carbon. Modification intrachannel surfaces make them hydrophilic enables KMnO4 readily penetrate channels. At same time, modification changes surface reactivity, enabling formation pores by reduction metal ions. The resultant structures were characterized X-ray diffraction (XRD), nitrogen adsorption, and transmission electron microscopy (TEM). with...

Nano tungsten oxide (WO3) particles were synthesized on the surface of graphene (GR) sheets by using a simple sonochemical method. The obtained composite, WO3@GR, was characterized X-ray diffraction, N2adsorption/desorption analysis, thermo-gravimetric Raman spectroscopy and UV-vis diffuse reflectance spectra measurements. It found that chemical bonds between nano WO3 GR formed. average particle size evidenced to be around 12 nm sheets. When used as photocatalyst for water splitting, amount...

The design of a delivery system was reported based on stimuli-responsive poly(N-isopropylacrylamide) (PNIPA) inside mesostructured cellular foam (MCF) via atom transfer radical polymerization (ATRP), and the control drug release in response to environmental temperature investigated. successful synthesis PNIPA MCF confirmed by Fourier transform infrared (FT-IR), transmission electron microscopy (TEM) nitrogen adsorption/desorption measurements. Control through porous network performed...

We developed a highly efficient photocatalyst for both H2 and O2 generation under visible-light irradiation by attaching Bi2WO6 (BWO) nanocrystals on graphene nanosheets to produce graphene-Bi2WO6 composite (Gr-BWO-T). The was prepared sonochemical method where oxide (GO) served as the support which BWO formed in situ. nanoparticles with size of 30-40 nm were homogeneously dispersed surface sheets, due their bonding graphene. When used irradiation, production rate reached value up 20.60 μmol...

Poly (3, 4-ethylenedioxythiophene) (denoted PEDOT) already has a brief history of being used as an active material in supercapacitors. It many advantages such low-cost, flexibility, and good electrical conductivity pseudocapacitance. However, the major drawback is low stability, which means obvious capacitance drop after certain number charge–discharge cycles. Another disadvantage its limited this becomes issue for industrial applications. To solve these problems, there are several...

A novel sol–gel method was developed for the fabrication of a C-doped BiVO4 (BVOB@xC) photocatalyst with fine hierarchical structures templated from Papilio paris butterfly wings. The wing BVOB@xC were confirmed by SEM and TEM observations. doped carbon in formed situ biotemplate during calcination process amount doping could be controlled 0.6–2.4 wt% adjusting temperature. It found that sample calcined at 400 °C content 1.5 (BVOB@1.5C) demonstrated best photocatalytic activity both...

Abstract We report a novel method for the preparation of graphitic carbon nitride (g‐C 3 N 4 ) with various morphologies through self‐assembly and calcination, which starts from raw materials melamine, urea, cyanuric acid. The hollow to wormlike g‐C could be readily tailored by adjusting molar ratio melamine urea; increase in 3:1 1:3, morphology transformation was observed. were aggregates hydrogen bonding ionic interactions. Correspondingly, an increased BET surface area 49.6 97.4 m 2 g −1...

Graphene platelets (GnPs) are a class of novel 2D nanomaterials owing to their very small thickness (∼3 nm), high mechanical strength and electric conductivity (1460 S cm−1), good compatibility with most polymers as well cost-effectiveness. In this paper we present low-cost processing technique for producing modified GnPs an investigation the electrical properties resulting composites. After dispersing in solvent N-methyl-2-pyrrolidone, long-chain surfactant (Jeffamine D 2000, denoted J2000)...

A high-performance anode material was prepared from a hierarchically structured activated carbon which contains in situgraphene and nano-graphite. The immersed solution of SnCl2·2H2O subjected to ultrasound. As result, nanoparticles SnO2 were uniformly deposited on the surface carbon. composite then coated with thin layer by soaking it sucrose solution, followed carbonization adsorbed at 500 °C. resulting showed an outstanding high-rate cycling performance that can deliver initial discharge...

Abstract Very recently, wing scales of natural Lepidopterans (butterflies and moths) manifested themselves in providing excellent three dimensional (3D) hierarchical structures for surface‐enhanced Raman scattering (SERS) detection. But the origin observed enormous enhancement analytes on 3D metallic replicas butterfly has not been clarified yet, hindering a full utilization this huge wealth with more than 175 000 morphologies. Herein, sub‐micrometer Cu replicated from are successfully tuned...

Cellulose nanocrystals (CNCs) have attracted much interest due to their unique optical property, rich resource, environment friendliness, and templating potentials. CNCs been reported as novel photonic humidity sensors, which are unfortunately limited by the dissolution unideal moisture absorption of CNCs. We, in this study, developed a high-performance composite sensor that consisted polyacrylamide; chemical bonding was induced between two components using glutaraldehyde bridging agent. The...