Flavor Enhancer,Food Enhancer,Sodium Acetate For Ph Adjusting Agent Henan Hongze Environmental Protection Technology Co., Ltd , https://www.pampacyy.com
Due to its uniform shape and size, monodisperse micro-nanoparticles play an important role in the study of the shape and size-dependent properties of materials. At the same time, these monodisperse structures are also ideal building blocks for the assembly of micro-nano ordered arrays with macro functions. The self-assembled monodisperse micro-nanoparticles have higher structural repeatability and superior functional stability than irregularly shaped particulate films. Therefore, the synthesis and assembly of monodisperse micro/nanoparticles has always been the focus of materials science research. In recent years, scientists have developed a variety of methods for the self-assembly of monodisperse particles, and obtained different patterns of the structure array, three-dimensional superstructure, etc., such as Langmuir-Blodette (LB) method, spin coating method, vertical Deposition method, water/oil interface assembly method, etc. Compared with the traditional micro-nano processing technology of the etching method, the nano-structured array films obtained through these self-assembling methods can greatly reduce the production cost and have good practicality. However, the existing reported self-assembly methods have advantages and disadvantages and limitations. Therefore, the development of a simple self-assembling method that is simple, rapid, uniform, and has a controllable structure parameter of monodisperse micro-nanoparticles film is still expected.
Recently, the Li Yue Group of the Solid Institute of Hefei Research Institute and Zhou Yong of the School of Physics of Nanjing University have made new advances in the synthesis of monodisperse micro/nanoparticles and the self-assembly at the interface of large-area uniform thin films. They first synthesized monodisperse Nb2O5 microspheres using one-step hydrothermal method using antimony pentachloride and TBA as raw materials; then, based on the n-butanol assisted gas/water interfacial assembly method, they can obtain large areas quickly (~3 minutes). (Square cm) Uniformly densely packed monolayer Nb2O5 microsphere film. By stacking layers, this method can also be used to make thin layers with controllable layers. In order to further improve its gas sensing performance, researchers have newly developed a gas/solution interfacial assembly method to assemble Nb2O5 microsphere films at the interface of metal salt (M) solutions, transferring them to gas-sensitive substrates and annealing them. A composite film of MOx/Nb2O5 microspheres was obtained. By adjusting the composition of the solution, different types of metal oxide/Nb2O5 microsphere heterojunction films can be obtained. It was found that the obtained In2O3 / Nb2O5 heterostructure array exhibited better gas-sensing properties, which provided a new idea for the design and development of high-performance heterojunction devices. The relevant research results were published in the Advanced Materials Interfaces magazine and were selected as the current cover.
Related work has been funded by the Ministry of Science and Technology's "973" program, the National Natural Science Foundation, the "Yang Thousand Talent Plan" of the Central Organization Department, and the "crossover and innovation team" of the Chinese Academy of Sciences.
Monodisperse particle preparation research progress
Recently, Li Yue Group, a researcher of the Department of Micro-nano Technology and Devices of the Institute of Solid State Physics, Chinese Academy of Sciences, and Professor Zhou Yong of Nanjing University, cooperated with Professor Zhou Yong of the Institute of Solid State Physics, Chinese Academy of Sciences, to obtain new monodisperse particle preparation and controllable self-assembled functional devices. Progress, relevant results were published in Advanced Materials Interfaces, 2015, 2, 1500167 by John Wiley Publishing.