Remarkable surface wettability transition occurs with an inducement of ultraviolet (UV) for aligned ZnO nanorod films. The inorganic oxide films, which show super-hydrophobicity (left), become super-hydrophilic (right) when exposed to UV illumination. After the films are placed in dark, evolves back super-hydrophobicity. This reversible effect is ascribed cooperation photosensitivity and nanostructure. Such special property will greatly extend applications

Asymmetric supercapacitors with high energy density are fabricated using a self‐assembled reduced graphene oxide (RGO)/MnO 2 (GrMnO ) composite as positive electrode and RGO/MoO 3 (GrMoO negative in safe aqueous Na SO 4 electrolyte. The operation voltage is maximized by choosing two metal oxides the largest work function difference. Because of synergistic effects highly conductive pseudocapacitive oxides, hybrid nanostructure electrodes exhibit better charge transport cycling stability....

Silicon has been touted as one of the most promising anode materials for next generation lithium ion batteries. Yet, how to build energetic silicon-based electrode architectures by addressing structural and interfacial stability issues facing silicon anodes still remains a big challenge. Here, we develop novel kind self-supporting binder-free via encapsulation nanowires (SiNWs) with dual adaptable apparels (overlapped graphene (G) sheaths reduced oxide (RGO) overcoats). In resulted...

We report the facile fabrication of a functional nanoporous multilayer film with wettability that is reversibly tunable between superhydrophobicity and superhydrophilicity UV/visible irradiation. Our approach controls surface roughness an electrostatic self-assembly process makes use photoresponsive molecular switching fluorinated azobenzene molecules. Selective UV irradiation onto nanostructured substrate was used to realize substrates erasable rewritable patterns extreme wetting...

Abstract Summary: Rough polydimethylsiloxane (PDMS) surface containing micro‐, submicro‐ and nano‐composite structures was fabricated using a facile one‐step laser etching method. Such shows super‐hydrophobic character with contact angle higher than 160° sliding lower 5°, i.e. self‐cleaning effect like lotus leaf. The wettabilities of the rough PDMS surfaces can be tunable by simply controlling size etched microstructures. adhesive force between water droplet is evaluated, structure deduced...

We have investigated the electronic structure of graphite oxide using X-ray absorption spectroscopy at carbon and oxygen K-edges. The unoccupied π* σ* states associated with sp2 hybridization in graphite, are also apparent oxide, which indicates that it has a graphitic even though experiences oxidation annealing. Additional not present its precursor, ascribed to functional groups such as epoxide, carboxyl, hydroxyl groups.

Graphite oxide was synthesized using various oxidation times and characterized by its physical chemical properties. The degree of the graphite systematically controlled via time up to 24h. Three phases interlayer distances were identified x-ray diffraction: pristine (3.4A), intermediate (4A) fully expanded (6A) phases. These distinguished an atomic ratio O/C, which occurred from different compositions epoxide, carboxyl hydroxyl groups. band gap oxides also tuned time, resulting in direct...

Abstract An ultrathin V 2 O 5 layer was electrodeposited by cyclic voltammetry on a self‐standing carbon‐nanofiber paper, which obtained stabilization and heat‐treatment of an electrospun polyacrylonitrile (PAN)‐based nanofiber paper. A very‐high capacitance 1308 F g −1 in M KCl electrolyte when the contribution from 3 nm thick vanadium oxide considered alone, contributing to over 90% total (214 ) despite low weight percentage (15 wt%). The high is attributed large external surface area...

Nanofibers and microbumps intertwined in 3D networked 1H,1H,2H,2H-perfluorodecyltrichlorosilane (FTS)-derived surfaces are synthesized by a phase separation reaction. The shows super-amphiphobicity air super-oleophilicity under water. special wettablity of the surface is well retained, even after repeated use flushing. successfully used to capture collect oil droplets Detailed facts importance specialist readers published as ”Supporting Information”. Such documents peer-reviewed, but not...

A novel high performance electrode material for supercapacitor applications, terephthalonitrile-derived nitrogen-rich network (TNN), is developed successfully via temperature-dependent cross-linking of terephthalonitrile monomers. This work opens up a new window seeing versatile modular toolbox derived from various aromatic nitrile monomers developing better materials in the future.

We propose a new material for high power and density supercapacitors with excellent cycle stability. Graphite oxide (PSS−GO) intercalated poly(sodium 4-styrensulfonate) showed performance of electric double layer capacitance (EDLC) compared to that the pristine graphite oxide. Specific PSS−GO reached 190 F/g, energy was much improved 38 Wh/kg 61 W/kg. Cycle test specific decreased by only 12% after 14860 cycles, providing cyclic The EDLC composite attributed wide interlayer distance simple...

A novel [email protected]2 supercapacitor is presented. The sophisticated core–shell architecture combining an Au nanomesh core with a MnO2 shell on flexible polymeric substrate demonstrated as electrode for high performance transparent supercapacitors (TFSCs). Due to their unique structure, areal/gravimetric capacitance and rate capability TFSCs are achieved. As service our authors readers, this journal provides supporting information supplied by the authors. Such materials peer reviewed...

Pristine graphene oxide thin film field effect transistors were fabricated on Si substrates without an additional reduction process. Graphene with optical band gap of 1.7 eV showed p-type semiconducting behaviour in air and ambipolarity under vacuum. The temperature dependence conductance confirmed these characteristics. I–V characteristics well fitted to a variable range hopping model 2 + 3 dimensionality, good contrast the 2D fitting reduced oxide.

We describe the low-temperature thermal exfoliation of graphite oxide to obtain functionalized graphene sheets (FGSs). Graphite oxide, which is highly oxidized produced by a modified Brodie method, further exfoliated simple heat treatment at 270–275 °C under ambient Ar. The FGSs that are generated have fewer defects and less oxygen content than in commercial (GSs) prepared high temperatures (>900 °C). X-ray photoelectron spectroscopy demonstrates clear π-plasmon peak type seen precursor...

Abstract A physical route is proposed to obtain highly crystalline graphene sheets with minimal oxygen content similar the precursor graphite. The functional obtained from graphite oxide by low temperature thermal exfoliation are annealed at high (1900 °C) in a vacuum (10 −6 torr). D band intensity Raman spectroscopy reduced significantly, while G recovered, level of No appreciable observed X‐ray photoelectron and an electrical conductivity ∼56 500 S m −1 obtained, comparable 100 900

A new synthesis route of a solution-processed highly conductive self-standing graphite membrane from reassembled graphene oxide (GO) has become one the intensive research focus, because its immense application opportunities. Previously demonstrated techniques were limited by unstable reduced (RGO) dispersion and agglomeration during chemical reduction without any surfactant. This results in poor packing morphology low electrical conductivity RGO membrane. Here, we report novel concentrated...

A facile roll-to-roll method is developed for fabricating reduced graphene oxide (rGO)-based flexible transparent conductive films. Sn2+ /ethanol reduction system and a rationally designed fast coating-drying-washing technique are proven to be highly efficient low-cost continuous production of large-area rGO films patterned films, extremely beneficial toward the manufacture photoelectronic devices.

Abstract Terahertz metamaterial absorbers (TMAs) can efficiently absorb electromagnetic wave in the range of 0.1–10 THz based on tunable properties artificially designed unit cells. TMAs achieve perfect absorption, as well broad band absorption. Specifically, break thickness limit a device at quarter wavelength, realizing ultra‐thin devices so to facilitate integration with other systems. Accordingly, have high application value communication, imaging, detection, security inspection, and...

The interesting oil-wetting behavior to a superamphiphobic surface in water has been investigated. We demonstrated that the trapped air can tune underwater wettability of surface, changing from superoleophilic superoleophobic. grooves cause significant change three-phase contact line (TCL).

In this work, the hydrogen-induced effects on CVD growth of high-quality graphene have been systematically studied by regulating parameters mainly related to hydrogen. Experimental results demonstrate that under a high hydrogen flow rate, competitive etching effect during process is more prominent and even shows macroscopic selectivity. Based these understandings, hexagonal domains with diverse edge modalities are controllably synthesized large scale elaborately managing existed formation...

Abstract Various applications of terahertz (THz) radiation and the importance to fundamental science make development THz technology one key areas in modern applied physics. detectors are a component technology, whose performance determines application market. One feasible approach fabricate high is utilize carbon nanomaterials, particularly, nanotubes (CNTs), graphene. Their novel thermal, optical, electronic properties them promising field technology. In this review, based on brief...

Glycosylation profiling of MPXV structural proteins with poly SR.

We report the transformation of electronic structures sp 2 graphene to 3 by UV-light-assisted oxidation. Two distinctive oxidation mechanisms were observed during this metal–insulator transition: (i) At low-oxidation regime, p-doping behavior oxygen species extracting electrons from and (ii) at high-oxidation n-doping electron-hopping via strongly localized oxide states. also found that dominant oxygen-related functional group was an epoxide rather than hydroxyl group, which differed...