Large-scale integrated graphene oxide power generator arrays on paper have been fabricated by direct screen printing and provide a high enough electrical output to electronic devices.

The development of photocatalysts with continuous electron extraction and rapid proton transfer could kinetically accelerate the artificial photosynthesis, but remains a challenge. Herein, we report topology-guided synthesis high-crystalline triazine covalent organic framework (COF) decorated by uniformly distributed polar oxygen functional groups (sulfonic group or carboxyl) as strong electron/proton extractor for efficient photocatalytic H

Winging it: The natural micro- and nanostructures that exist on the wings of cicadas (see image) are used as a new type nanoimprinting lithography (NIL) stamp. NIL is to fabricate nanowell arrays structures transferred silicon substrate by reactive ion etching. Patterned PMMA (poly(methyl methacrylate)) also mold hexagonal gold pillar mimick cicada wings. This work demonstrates use much cheaper method abundant easy obtain. Supporting information for this article available WWW under...

Graphene quantum dots (GQDs) have been successfully deposited onto the three-dimensional graphene (3DG) by a benign electrochemical method and ordered 3DG structure remains intact after uniform deposition of GQDs. In addition, capacitive properties as-formed GQD-3DG composites are evaluated in symmetrical supercapacitors. It is found that supercapacitor fabricated from composite highly stable exhibits high specific capacitance 268 F g(-1), representing more than 90% improvement over made...

A facile one-step approach has been developed to fabricate partially reduced graphene oxide–polypyrrole (prGO-PPy) film via self-oxidation–reduction strategy, in which oxide acts as the oxidant polymerize pyrrole into PPy leading spontaneous partial reduction of GO and cross-linking between prGO π–π interaction. With convenient preparation method, a well controlled designed asymmetric actuator based on (or G)/prGO-PPy with excellent humidity electrochemical responses achieved for versatile...

Abstract The constructing of 3D materials with optimal performance is urgently needed to meet the growing demand advanced in high‐tech sector. A distinctive graphene (3DG) designed based on a repeated rebirth strategy obtain better body and after each round rebirth, as if it Phoenix Nirvana. properties reborn graphene, namely 3DG Nirvana (NvG), has been dramatically upgraded compared 3DG, including high density (3.36 times) together porosity, well electrical conductivity (1.41 times),...

The pure natural cotton provides a low-cost material platform for the facile assembly of all-cotton-derived electrochemical supercapacitors (allC-ECs) with remarkable character arbitrary foldability and high response rate, which can be bent, rolled-up, fully folded without loss high-rate (<50 ms) capacitive performance.

Graphene quantum dots (GQDs) have been successfully deposited onto aligned carbon nanotubes (CNTs) by a benign electrochemical method and the capacitive properties of as-formed GQD/CNT hybrid arrays were evaluated in symmetrical supercapacitors. It was found that supercapacitors fabricated from exhibited high capacitance 44 mF cm(-2), representing more than 200% improvement over bare CNT electrodes.

Versatile graphene oxide putty-like material (GOP) with excellent processability is developed by mediating a suspension aniline. Arbitrarily predesigned architectures on both microscopic and macroscopic scales can be molded easily. GOP cannot only used as starting for direct 3D printing of particular configurations, but also tailored into the patterned structures various substrates large-scale production device arrays. As service to our authors readers, this journal provides supporting...

Pore-rich graphene networks hold great promise as advanced supporting materials of metals and metal oxides for high electrochemical performance. In this work, a dual substrate-assisted reduction assembly (DSARA) process has been devised demonstrated general approach the spontaneous oxide, well-organized reduced oxide into three-dimensional porous networks, simultaneous functionalization graphenes with metal-based nanocomponents on demand, including metals, oxides, metal/metal hybrids or...

Capacitive deionization (CDI), which is based on ion electrosorption the surface of electrically charged electrodes, has attracted widespread attention as a novel, cost-effective and environment-friendly desalination technology. Carbon materials are widely used CDI electrodes due to their high specific area (SSA), superior conductivity, better stability. Many research efforts have been made further enhance performance carbon materials. In this review, performance-enhancing strategies various...

Redox-labeled self-assembled monolayers (SAMs) on gold are excellent model systems for the study of long-range electron transfer processes at electrolyte–electrode interfaces, particularly distance and reorganization energy dependences. In this work, we have shown that intermolecular interaction among redox centers is in fact a crucial factor overall, nonideal electrochemical response ferrocenylalkanethiolate SAMs gold. both single-component high-ratio binary 11-ferrocenyl-1-undecanethiol...

Micro/nanopatterned magnetic thin films boost the electromagnetic interference resistance of electromagnetically compatible devices by controlling spin‐wave propagation. The dynamic response is directly influenced their texture. However, lack direct observations inhomogeneous texture evolution hinders understanding complex ferromagnetic resonance (FMR) mechanisms. This study introduces two types one‐dimensional magnonic crystals, permalloy microstrip arrays, and alternating permalloy‐SiO 2...

Graphene-quantum-dot microspheres (GQDSs) have been prepared by assembly of graphene quantum dots (GQDs) via a water-in-oil (W/O) emulsion technique without the addition any surfactants. Although made quantum-sized dots, as-formed GQDSs are solid and remain intact after slight ultrasonication. The versatile W/O method allows in situ intercalation functional nanocomponents into for specific applications. As exemplified Fe3O4-containing GQDSs, Fe3O4–GQDSs exhibit large magnetic response....

3D graphene interconnected frameworks homogeneously connected with a few-layer film (3DG/FLG) constitute novel hierarchical hybrid structure for anodes in lithium-ion batteries. The pore-rich network is favorable Li+ diffusion and electron transport, the FLG non-metallic current collector that effectively collects/transports charge carriers from/to provides an excellent scaffold to support 3DG.

Ferrocenylalkanethiols are excellent probes to study the structure and properties of mixed self-assembled monolayers (SAMs) on gold; in this paper, molecular heterogeneity binary redox-active SAMs gold prepared via postassembly exchange coadsorption processes is revealed electrochemically. The process single-component 11-ferrocenyl-1-undecanethiolate (FcC11S–Au) with 1-undecanethiol (C11SH) first investigated; it shown that a single pair redox peaks can be obtained upon prolonged immersion...

ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTEvaluation of the Tunneling Constant for Long Range Electron Transfer in Azobenzene Self-Assembled Monolayers on GoldH. Z. Yu, H. B. Shao, Y. Luo, L. Zhang, and F. LiuView Author Information Center Intelligent Materials Research (CIMR), College Chemistry Molecular Engineering, Peking University, Beijing 100871, China Cite this: Langmuir 1997, 13, 21, 5774–5778Publication Date (Web):October 15, 1997Publication History Received3 February 1997Revised1...

Quantification of the amount intermolecular hydrogen bonding between ferrocenemethanol and 3-mercaptopropanoic acid on gold was performed by cyclic voltammetry as well finite element simulation, displaying a proof-of-concept that slight changes features are used potentially for interpreting weak molecular interactions. Ferrocenemethanol at bulk concentration level 0.5 mM adsorbs surface bonding, with fractional coverage ranging from 0% to 14% monolayer in accordance which explored...

The redox behavior and ion-pairing thermodynamics of ferrocene its derivatives (dimethylferrocene decamethylferrocene) in a nitrobenzene (NB) thin film imposed between graphite electrode an aqueous electrolyte solution have been studied. We shown that the presence supporting electrolytes organic phase complicates their behavior, i.e., both oxidation potential peak area change significantly with time. In absence NB phase, molecules also shifts when concentration (NaClO4 or HClO4) varies. It...