Sulfonated polyaniline (SPAN) is a self-doped conducting polymer. It has high water solubility and novel pH-dependent DC conductivity that of interest for fundamental science also applications in such areas as rechargeable battery pH control technologies. We report here the extensive characterization details synthesis new form sulfonated (LEB-SPAN) which shows or significantly improved chemical physical properties. LEB-SPAN sulfur to nitrogen ratio (S/N) ∼0.75, 50% larger than previously...

There is a great desire to develop the high-efficient anodes materials for Li batteries, which require not only large capacity but also high stability and mobility. In this work, phosphorene/graphene heterostructure (P/G) was carefully explored based on first-principles calculations. The binding energy of pristine phosphorene relatively weak (within 1.9 eV), whereas can greatly improve (2.6 eV) without affecting mobility within layers. electronic structures show that adsorption fast...

Using a structural search method in combination with first-principles calculations, we found lots of low energy 2D carbon allotropes and examined all possible Dirac points around their Fermi levels. Three amazing have been discovered, named as S-graphene, D-graphene E-graphene. By analyzing the topology correlations among S-, T, net W graphene graphene, that general rule is valuable for constructing are keen to possess cones electronic structures. Based on this rule, successfully designed...

Transition metal chalcogenides have attracted considerable attention for the further development of nanoscale devices, however low carrier mobility seriously prevents its application.

Highly sulfonated polyaniline prepared via a synthetic scheme using leucoemeralding base (LEB−SPAN) has been studied X-ray photoelectron spectroscopy (XPS). A sulfonation level (S/N ratio) as high 0.80 ± 0.10 revealed in XPS analysis, agreeing well with the element chemical analysis results (∼0.78). This contrasts to an S/N ratio of 0.50 for SPAN made earlier reported method. The detailed S 2p and N 1s peak analyses both show that oxidation is ∼50%, implying better thermal stability...

A novel binder-free electrode material of NiMoO4@CoMoO4 hierarchical nanospheres anchored on nickel foam with excellent electrochemical performance has been synthesized via a facile hydrothermal strategy. Microstructures and morphologies samples are characterized by X-ray diffraction (XRD), Raman, scanning electron microscopy (SEM), transmission (TEM), energy dispersive spectroscopy (EDS) photoelectron (XPS). Besides, the effect Ni/Co molar ratios raw materials behaviors is also investigated...

Here, a graphene-based aerogel embedded with two types of functional nanoparticles shaped in three-dimensional (3D) cylindrical architecture was prepared by facile one-pot hydrothermal process. During the reaction, uniformly dispersed TiO2 (P25) and CdS were loaded on graphene sheets, resulting composites self-assembled into 3D interconnected network. It is shown that hydrogel are appropriate robust hosts for anchoring different nanostructured particles. The outstanding synergistic effect...

The pristine and defect-containing phosphorene as promising anode materials for Li-ion batteries (LIBs) have been systematically investigated by first-principles calculations.

Developing an efficient electrocatalyst with the desired architectural and electronic properties is paramount for water splitting. Here, we apply theoretical calculations to experimental studies uncover influence of structure engineering (quantizing support coupling) on HER catalytic activity develop optimized C3N4 hybrid catalyst. Impressively, atom-thick quantum dots graphene (CNQDs@G) has been successfully obtained achieves performance low overpotential (110 mV) at 10 mA cm–2, large...

Rational nanoscale surface engineering of electroactive nanoarchitecture is highly desirable, since it can both secure high surface‐controlled energy storage and sustain the structural integrity for long‐time high‐rate cycling. Herein, ultrasmall MoS 2 quantum dots (QDs) are exploited as sensitizers to boost electrochemical properties Li 4 Ti 5 O 12 (LTO). The LTO/MoS composite prepared by anchoring 2D LTO nanosheets with QDs using a simple effective assembly technique. Impressively, such...

A novel two-dimensional carbon allotrope, rectangular graphyne (R-graphyne) with tetra-rings and acetylenic linkages, is proposed by first-principles calculations. Although the bulk R-graphyne exhibits metallic property, nanoribbons of show distinct electronic structures from bulk. The most intriguing feature that band gaps oscillate between semiconductor states as a function width. Particularly, zigzag edge half-integer repeating unit cell exhibit unexpected Dirac-like fermions in...

A facile strategy has been developed to fabricate Ni3S2 nanoparticles wrapped with in situ generated N-doped graphene sheets (Ni3S2@N-G). In this strategy, the nitrogen and sulfur-containing resin is introduced as a sulfur source form provide of carbon grow coating on their surface. As an anode material lithium-ion batteries (LIBs), Ni3S2@N-G exhibits highly improved reversible capacity, well excellent cycling performance rate performance. It delivers discharge capacity up 809 mA h g−1 150th...

A novel composite of reduced graphene oxide (RGO) and FeS₂ microparticles self-assembled from small size cubes as a high-performance anode material for lithium-ion batteries (LIBs) has been prepared <italic>via</italic> facile one-pot hydrothermal method.

Herein, a new nanocomposite consisting of up-conversion (UC) material (YF3:Yb3+,Tm3+), TiO2 (P25) and graphene (GR) has been prepared shown to be an advanced sunlight activated photocatalyst. During the facile hydrothermal method, reduction oxide loading YF3:Yb3+,Tm3+ P25 were achieved simultaneously, functionalities each part integrated together. The as-prepared ternary UC–P25–GR photocatalyst exhibited great adsorptivity dyes, significantly extended light absorption range, efficient charge...

Graphyne, a new allotrope of carbon, is current topic focus in the nanomaterial research community. We investigate thermal transport property graphyne nanoribbons (GYNRs) by using nonequilibrium Green's-function method. The conductance GYNRs only approximately 40$%$ that graphene nanoribbons. A distinct width dependence observed as well. armchair-edged (A-GYNRs) shows linear dependence, while steplike displayed zigzag-edged (Z-GYNRs). Moreover, an A-GYNR larger than Z-GYNR same width,...

Abstract Two-dimensional silicon phononic crystals have attracted extensive research interest for thermoelectric applications due to their reproducible low thermal conductivity and sufficiently good electrical properties. For devices in high-temperature environment, the coherent phonon interference is strongly suppressed; therefore transport incoherent regime critically important manipulating conductivity. On basis of perturbation theory, we present herein a novel scattering process from...

We investigate the size and edge roughness dependence on thermal conductivity of monolayer MoS2 (MLMoS2) by phonon Boltzmann transport equation combined with relaxation time approximation. The relative contribution spectral phonons to is explored, we compared characteristics those in single layer graphene (SLG), which a representative two-dimensional material. Quite different from SLG, because ultra-short intrinsic mean free path, MLMoS2 ribbons insensitive. LA have major MLMoS2, ZA high...

We have carried out first-principles calculations and theoretical analysis to explore the structural electronic properties of MoS2/n-h-BN heterostructures consisting monolayer MoS2 on top h-BN substrates with one five layers. find that show indirect bandgap features both CBM (in K point) VBM Γ localized MoS2. Difference charge density surface bands indicate there is no obvious exchange in heterostructure systems. changes from a direct free-stranding an induced by strain. Moreover, we...