In this article, a clean method for the synthesis of PtPd/reduced graphene oxide (RGO) catalysts with different Pt/Pd ratios is reported in which no additional components such as external energy (e.g., high temperature or pressure), surfactants, stabilizing agents are required. The obtained were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution (HRTEM), Raman spectroscopy, photoelectron spectroscopy (XPS), induced coupled plasma atomic emission...

Pd–PEDOT/graphene nanocomposites with hierarchical structure and superior electrocatalytic performance toward ethanol oxidation are fabricated by a facile one-pot method.

Open AccessCCS ChemistryRESEARCH ARTICLE1 Sep 2021Helically Grooved Gold Nanoarrows: Controlled Fabrication, Superhelix, and Transcribed Chiroptical Switching Song Wang, Liheng Zheng, Wenjie Chen, Lukang Ji, Li Zhang, Wensheng Lu, Zheyu Fang, Fucheng Guo, Limin Qi Minghua Liu Wang Beijing National Laboratory for Molecular Science (BNLMS), CAS Key of Colloid, Interface Chemical Thermodynamics, Institute Chemistry, Chinese Academy Sciences, 100190 University the 100049 , Zheng State Mesoscopic...

Abstract The height of 101‐storey Shanghai World Financial Center Tower is 492m above ground making it possible the tallest building in world when completed. Three parallel structural systems including mega‐frame structure, reinforced concrete and braced steel services core outrigger trusses, are combined to resist vertical lateral loads. could be classified as a vertically irregular structure due number stiffened transfer stories building. Complexities related system layout mainly exhibited...

A novel single-chain surfactant with multi-amine headgroups, bis(amidoethyl-carbamoylethyl) octadecylamine (C18N3), was synthesized. Electronmicrographic study showed that in aqueous solution C18N3 formed small micelles (10−20 nm diameter) at pH 2.0 and changed into much larger globule vesicles sized about 0.6−2.0 μm diameter 6.8. At 12.0 to a continued lyotropic lamella structure. = 2, the surface tension (γ)−concentration (C) curve 2 an ordinary one, having one critical micelle...

SUMMARY This paper presents the results of an experimental and analytical/computational study performance multi‐unit particle dampers with MDOF system. A series shaking table tests a three‐storey steel frame damper system were carried out to evaluate verify analysis method. An analytical solution based on discrete element method is also presented. comparison between computational shows that reasonably accurate estimates response primary under earthquake excitations can be obtained. These...

Chiral nanostructure, such as the double helix of DNA and α-helix protein, plays an important role in biochemistry material sciences. In organism system, biological entities always exhibit homochirality show preference toward one specific enantiomer. How opposite enantiomers will affect chirality supramolecular nanostructures their interactions with molecules remains issue. this study, two gelators bearing amphiphilic l-glutamide d- or l-pantolactone (abbreviated DPLG LPLG) were designed,...

Noble metal nanostructures with plasmonic circular dichroism (PCD) have attracted interest, and a modulation of PCD is great importance for their potential applications. Herein, we propose supramolecular strategy achieving dual thermal photoswitchable PCD. When guanosine (G), deoxyguanosine (dG), boric acid modified achiral gold nanorods (GNRs) were coassembled into hydrogel, hybrid nanofibers produced. the hydrogel was heated, nanofiber disassembled disappeared. As thermally reversible,...

MXene is a newly developed two-dimensional energy storage material in recent years, featuring abundant surface functional groups, fast ion transport channels, and sufficient active sites. It has become current research hotspot, with large number of studies emerging years. This paper provides comprehensive review the application materials supercapacitors. First, working principle supercapacitors introduced, key factors affecting their electrochemical performance are analyzed. Then, advantages...

In this paper, a single tree-type multiple-head surfactant, bis (amidoethyl-carbamoylethyl) octadecylamine (C18N3), which functions as both the reducing and capping agent in reaction system, has been used to fabricate gold nano- microplates. The triangle hexagonal plate, polyhedron, sphere morphology of nanoparticles could be easily controlled simply by changing molar ratio C18N3/HAuCl4. Other influences on particles, such Cl− concentration, temperature time, were also studied. At standard...

Abstract This paper presents a study of shake table testing for aseismic design structure systems. Two reinforced concrete models different scales were used first to implement and demonstrate the similitude concept using available equipment. was then applied 33‐story building's scaled model, multidirectional simulated seismic excitations. The test results evaluate modify original design. Some these also verified field after construction completed. Comparison between model full‐scale shows...

For a hydrogel based on zwitterionic dendritic surfactant, we report an apparently unprecedented reversible temperature-induced gel-to-gel phase transition below the melting point of its alkyl chains, where supramolecular self-assembly surfactant molecules underwent dramatic transformation from low-temperature bilayers to high-temperature entangled worm-like micelles.

Earthquake damage to freestanding nonstructural components has occurred in past earthquakes. Ceramic vase is one of the most vulnerable museums, residential, and historical buildings. To investigate seismic performance a vase, shaking table tests were conducted, where four motions, consisting two historic artificial ones, selected generated. The kinetic friction coefficient was acquired with slow-pull test, which used define possible response modes. rocking sliding responses observed by...

Superparamagnetic Fe3O4 nanoparticles were obtained using a hydrolysis product of starch, i.e., α-d-glucose, as the reducing agent and without any additional stabilizer dispersant by facile green method at mild temperature. Magnetic dialdehyde starch (MDASN) successfully synthesized with (DAS) wrapper epichlorohydrin cross-linker coembedding method. Bovine serum albumin (BSA) model drug was immobilized on suface MDASN. The particle size distribution MDASN 50-150 nm, average about 100 nm....