Terryloomis4312

Material formation mechanisms and their selective realization must be well understood for the development of new materials for advanced technologies. Since nanomaterials demonstrate higher specific surface energies compared to their corresponding bulk materials, the homoepitaxial growth of nanomaterials on bulk materials is not thermodynamically favorable. We observed the homoepitaxial growth of nanowires with constant outer diameters on bulk materials in two different, solution-based growth systems. We also suggested potential mechanisms of the spontaneous and homoepitaxial growth of the ZnO nanostructures based on the characterization results. The first key factor for favorable growth was the crystal facet stabilization effect of capping agents during the early stages of growth. The second factor was the change in the dominant growth mode during the reaction in a closed system. The spontaneous, homoepitaxial growth of nanomaterials enables the realization of unprecedented, complex, hierarchical, single-crystalline structures required for future technologies.This project studies the relationship between the carbonization temperature and ionic liquid (IL) ([Bmim]Cl and [Bmim]OAC) solution and its impact on the structure, properties and gasification reactivity of the hydrochar obtained from eucalyptus via hydrothermal carbonization (HTC). The structure of hydrochar was analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy while its gasification reactivity with air was measured by thermogravimetric analysis at 340 °C. Results showed that the reactivity of hydrochar prepared in the presence of IL was much higher than that prepared using water. SEM analysis revealed some vesicles on the hydrochar surface during HTC at 220 °C, while Raman and XRD results showed more disordered crystal structure of the hydrochar in the presence of ILs. selleck inhibitor XPS and Raman results revealed that CO contents on the hydrochar surface increased after adding IL which implied that IL can promote opening the loop of aromatic nucleus of biomass. This study provides important information for the preparation of highly active biochar based on IL assisted HTC of eucalyptus for practical applications.The development of functional materials with better flame-retardant and thermal insulation properties has attracted considerable attention for energy storage applications in modern society. Here, we describe a facile approach for the preparation of conjugated microporous polymer hollow spheres (CMP-HSs) by using SiO2 nanoparticles as a template via the Sonogashira-Hagihara cross-coupling reaction. The as-synthesized CMP-HSs have good thermal stability with a thermal decomposition temperature of up to 281 °C, high porosity (the BET specific surface area is measured to be approximately 666 m2 g-1) along with lipophilic and hydrophobic characteristics. To further improve their flame retardancy, CMP-HSs were treated with dimethyl phosphonate (DMMP) though an immersion method to prepare the CMP-HSs composite (CMP-HSs-DMMP) flame-retardants. By introducing CMP-HSs-DMMP into the epoxy resin (EP) matrix, the as-prepared EP composites showed excellent flame-retardant properties, e.g., the peak heat release rate (pHRR) and total heat release (THR) value of EP composites containing only 0.2% CMP-HSs-DMMP flame-retardant were 650.9 kW m-2 and 79.4 MJ m-2 respectively, in the range of 0 °C - 650 °C, which are 19.6 ± 2% and 19.1 ± 5% lower than that of pure EP within the same temperature range. Considering the significant enhancement of its flame retardancy with only a slight dosage of CMP-HSs-DMMP, such CMP hollow sphere-based flame-retardant composites may have great potential as functional bulk materials or coatings in a variety of fireproofing applications.Different from traditional methods, ultrasound sonochemical synthesis can create very special reaction conditions by virtue of the effects of acoustic cavitation. The localized spots in the medium liquids can reach the temperature of ~5000 K, and the pressure of ~1000 bar with the treatment of ultrasonic irradiation. The extreme conditions make it possible to fabricate a series of nanostructured materials with peculiar properties. Herein, we successfully prepared a unique amorphous composite of Sb2S3-graphene via sonochemical method at room temperature. Thanks to the opening frame of ion diffusion channels and higher reversibility in thermodynamics, the amorphous composite displayed superior electrochemical properties in comparison with the crystalline counterpart for sodium-ion batteries. Specifically, the amorphous Sb2S3-graphene composite delivered a first discharge capacity of 1867.1 mAh g-1 and a high reversible capacity of over 880 mAh g-1 after 50 cycles. The nanostructured materials synthesized by ultrasound sonochemical method with unique properties have well prospect in the field of energy storage.The charge recombination on the interfaces of TiO2/quantum dots (QDs)/electrolyte is a key factor limiting the efficiency of quantum dot-sensitized solar cells (QDSSCs). Construction of double-layer barrier structure of ZnS/QDs/ZnS is a vital strategy to suppress the interfacial charge recombination. However, a large lattice mismatch (12%) at CdSe/ZnS interfaces causes CdSe to grow slowly on TiO2/ZnS mesoporous film, weakening the interaction between QDs and mesoporous film, which reducing the efficiency of CdSe QDSSCs with double ZnS barrier layers. Applying a voltage of 2 V in successive ionic layer adsorption reaction (VASILAR) to create an electric field, which assists Cd2+ and SeSO32- ions rapidly diffuse into the TiO2/ZnS mesoporous film to react forming CdSe QDs at room temperature. Optimizing the number of CdSe QDs deposition layers and combine with ZnS double-layer barrier structure, a best PCE of 4.34% for ZnS/CdSe/ZnS QDSSCs is achieved. This study gives a fast and simple approach to inhibit interfacial charge recombination to construct high performance CdSe QDSSCs.

Inguinal hernia is a common surgical problem and different methods are currently used to repair it. In The Lichtenstein technique, the inguinal floor defect is buttressed with a prosthetic mesh and commonly, sutures are used for mesh fixation. N-Hexyl Cyanoacrylate is a gluelike product that can be used for mesh fixation as a substitute with fewer complications. This study was done for comparing therapeutic outcomes of mesh fixation with suture and N-Hexyl cyanoacrylate glue in inguinal hernia repair with the Lichtenstein method.

In a two-arm parallel-group randomised controlled trial with blinded patients, 58 hernia cases who were candidates for hernia repair with the Lichtenstein method entered the study and randomly divided into two groups. In the control group, the mesh that was used for inguinal floor reinforcement was fixed with sutures and in the intervention group with N-Hexyl Cyanoacrylate glue. The results including acute and chronic pain, hospital stay, complications, and recurrence rate after one year were compared.