Ce4+-doped zinc oxide was prepared by Ionic liquid assisted sol - gel method using oxalic acid and zinc acetate as starting material for the first time. And rhodamine B as the target material to study ionic liquid assisted preparation of Ce4+-doped ZnO photocatalytic performance. ZnO was determined by SEM and XRD for introduction of ionic liquids and Ce4+ derived from nano-ZnO surface morphology and crystal before and after. The results show that the Ce4+-doped nano-ZnO crystal structure of a rod. In ionic liquids based on the Ce4+-doped photocatalytic properties of ZnO better. The degradation of rhodamine B 30min when the degradation rate of 90%.

Anodic oxidation in situ preparation of titanium matrix TiO2 nanotube and optimize the preparation process parameters. With the help of X-ray diffraction (XRD) analysis and scanning electron microscopy (SEM) technology we characterized the light catalyst that we have prepared. By oxidation degrading methylene blue, we tested its light catalytic activity. The result showed that the TiO2 nanotube maded at 20 V anodizing voltage, ionic liquids (2 ml), ammonium fluoride (0.684 g), ethylene glycol volume (200 ml) and water volume (6 ml)after 20 h, after dried for 30 min under 105 oC and annealed for 1 h under 500 oC in air became anatase phase, and the ratio of rutile phase is very low. The TiO2 nanotube arrays we made under the above condition for the degradation of methylene blue are good. The average diameter of a nanotube is about 90 nm, and the average thickness of a nanotube’s rampart is about 10 nm.

Graphene material has ideal lattice structure and unique electrical, optical and other properties. In the electronics, composite materials, and other fields it has a broad application prospect. In this paper, using the Hummers method, to prepare oxidized graphite and graphene , to optimize the conditions of the preparation of graphite oxide. With two kinds of reductors, glucose and hydrazine hydrate, reduction graphite oxide, and dropped silver ions in the process of reduction. Using XRD, SEM and Raman spectra to character and analyze the products. The result showed that the graphite and silver ions in the oxidation reaction process were both restored by glucose, hydrazine hydrate. This structure that silver nanoparticles are uniformly distributed in the graphene sheet layers, can effectively prevent the reunion of graphene layers, and also upset the rules of the pile of the graphene layers.

Aimed at the high dynamics and uncertainty of road traffic, we propose a method combine BDD (binary decision diagram)-Based heuristic algorithm which used to do the initial path planning with BDD-Based incremental to solve the route replanning problem. In order to get the optimal path set, BDD-Based heuristic Search is firstly used for global planning. BDD is a compact data structure, the BDD-Based heuristic Search use this characteristic to represent state space and compress the search space through heuristic information at the same time; when the road network information changes, incremental replanning was used in difference type of congestion and the optimum path set again. The simulation results show that the BDD-Based heuristic Search and incremental replanning method has high efficiency and practicability in solving vehicle routing problem under dynamic and uncertain environment.

In order to study the influence of explosion dispersion of submunition on the dispersion velocity and pressure characteristics of subunits, the experimental study of explosive dispersion of the central tube was carried out when the explosives with low detonation velocity were applied in central tube as the main charge. In addition, the explosion dispersion test process was recorded by high-speed photography. RDX-based aluminized explosive samples with low detonation velocity were prepared and tested, and the low detonation velocity performance changes under different charge diameters and densities were obtained. Based on the explosive dispersion test of the central tube of the submunition, the physical model and three-dimensional axisymmetric finite element model of the central tube, subunit and aluminium alloy shell with prefabricated grooves are established. The fluid-structure coupling calculation method is used to simulate the explosive dispersion process. The simulation results are compared with the test results, and the pressure distribution characteristics of the subunit and the variation law of the dispersion velocity are analyzed. The effectiveness of the engineering calculation method of JWL equation model parameters is verified. The results show that using RDX based aluminized low detonation velocity explosive as the main charge of the central tube structure can achieve the design goal of the explosive dispersion for submunition, and the explosion dispersion model of submunition can accurately describe the dispersion characteristics of the subunit. The research results can be used to guide the structural design of submunition warhead.