insight into the electrolysis of water on basal and edge (fullerene C) surfaces of 4 Å single-walled carbon nanotubes.

The extreme surface reactivity of 4 Å single-walled carbon nanotubes (SWCNTs) makes for a very promising catalytic material, however, controlling it experimentally has been found to be challenging. Here, we employ calculations to investigate the extent of surface reactivity and functionalization of 4 Å SWCNTs. We study the kinetics of water dissociation and adsorption on the surface of 4 Å SWCNTs with three different configurations: armchair (3,3), chiral (4,2) and zigzag (5,0).

Interactions of sub-five-nanometer diameter colloidal palladium nanoparticles in solution investigated liquid cell transmission electron microscopy.

Inter-particle interactions play important roles in controlling the structures, dispersion state and chemo-physical properties of colloidal nanoparticles (NPs) in liquid media. In this work, we prepared palladium (Pd) NPs with an average diameter of ∼4.6 nm inside the liquid cell, and investigated their coupled diffusion and aggregation behaviors through liquid cell transmission electron microscopy (LCTEM).

Facile synthesis of a BCN nanofiber and its ultrafast adsorption performance.

Boron carbonitride (BCN) nanofibers with rapid and efficient adsorption performance were prepared by electrospinning technology. TEM, XRD, XPS and N adsorption-desorption isotherms were performed to study the microstructure of the nanofibers. The results showed that the BCN fibers synthesized at 1000 °C (BCN-1000) have good crystallinity and high specific surface areas (403 m g).

Two-dimensional polar metals in KNbO/BaTiO superlattices: first-principle calculations.

Polar metals, commonly defined by the coexistence of polar structure and metallicity, are thought to be scarce because free carriers eliminate internal dipoles that may arise owing to asymmetric charge distributions. By using first-principle electronic structure calculations, we explored the possibility of producing metallic states in the polar/nonpolar KNbO/BaTiO superlattice (SL) composed of two prototypical ferroelectric materials: BaTiO (BTO) and KNbO (KNO). Two types of polar/nonpolar interfaces, p-type (KO)/(TiO) and n-type (NbO)/(BaO), which can be constituted into two symmetric NbO/BaO-NbO/BaO (NN-type) and KO/TiO-KO/TiO (PP-type) SL, as well as one asymmetric KO/TiO-NbO/BaO (PN-type) SL.

A univariate ternary logic and three-valued multiplier implemented in a nano-columnar crystalline zinc oxide memristor.

Memristors, which feature small sizes, fast speeds, low power, CMOS compatibility and nonvolatile modulation of device resistance, are promising candidates for next-generation data storage and in-memory computing paradigms. Compared to the binary logics enabled by memristor devices, ternary logics with larger information-carrying capacity can provide higher computation efficiency with simple operation schemes, reduced circuit complexity and smaller chip areas. In this study, we report the fabrication of memristor devices based on nano-columnar crystalline ZnO thin films; they show symmetric and reliable multi-level resistive switching characteristics over three hundred cycles, which benefits the implementation of univariate ternary logic operations.

A magnetic molecularly imprinted optical chemical sensor for specific recognition of trace quantities of virus.

A magnetic resonance light scattering (RLS) sensor based on the molecularly imprinted polymer (MIP) technique was developed for specific recognition of trace quantities of hepatitis A virus (HAV). Through a surface imprinting technique, the virus-magnetic-MIPs (virus-MMIPs) were prepared as the specific identification element, which was based on the effective synthesis of biomimetic polydopamine (PDA) inspired by mussels on the surface of FeO magnetic nanoparticles. The preparation process of the virus-magnetic-MIPs was simple and rapid under an applied magnetic field.

The industrial feasibility of low temperature DeNO in the presence of SO : a project case in a medium coking plant.

Catalyst poisoning by SO has hindered the industrial application of selective catalytic reduction (SCR) technology for the DeNO of low temperature flue gas for many decades. The current engineering process of placing the SCR unit after the desulphurization and dedusting units can lead to high project and operational costs owing to low DeNO efficiency at low temperatures. Based on our previous pilot results, a DeNO project case was built before the desulfurization unit in a medium coking plant to explore the industrial feasibility of low temperature DeNO in the presence of SO .