2results about How to "Prevent each other" patented technology

This invention discloses a high specific surface area mesoporous tin oxide powder and its preparation method. The method includes: dissolving a tin source in a mixed solvent of alcohol and deionized water, adding a ketone complexing agent and a nonionic dispersant, and stirring to form a tin-based complex precursor solution; then transferring the solution to a hydrothermal reactor for hydrothermal aging treatment, causing the precursor solution to hydrolyze and condense, forming gel particles in situ; after solid-liquid separation, washing with alternating anhydrous ethanol and dilute ammonia water, and drying to obtain the precursor powder; finally, performing staged heating calcination under an air-nitrogen mixed atmosphere, first removing organic components at low temperature, and then completing the crystal phase transformation at high temperature to obtain rutile phase SnO2 powder. The powder has an average particle size of 8–15 nm and a specific surface area of ​​85–110 m² / g. 2 The powder has a pergola size of 3–6 nm and good dispersibility. This invention effectively suppresses grain agglomeration through complexation regulation, hydrothermal-sol-gel coupling, and gradient atmosphere calcination. The prepared powder is suitable for applications such as gas sensors, lithium-ion battery anodes, or transparent conductive films.

This utility model relates to the technical field of clothes drying stands, and in particular to a side-mounted clothes drying stand, comprising a fixed base, a connecting rod, and a clothes drying crossbar. The clothes drying crossbar has protrusions on its upper side, and the protrusions are arranged with multiple hanging gaps. The connecting rod is located at both ends of the clothes drying crossbar, and the rear end of the connecting rod is hinged to the fixed base. A hanging rod is provided on the side of the fixed base that is close to each other. A stopper is provided at the front end of the connecting rod, and the stopper has a collar that fits over the clothes drying crossbar and the protrusions. The fixed base has a connector. The clothes drying crossbar is mounted on the wall via the connecting rod and the fixed base, without occupying ceiling space. Furthermore, it can be folded up close to the wall when not in use, saving space. It is also multifunctional, providing not only a hanging rod for storing clothes hangers, but also preventing clothes from sticking together using the hanging gaps. The protrusions between the gaps can also be used to hang plush toys, shoelaces, etc. The clothes drying crossbar can also be used in conjunction with the hanging rod and the wall for drying shoes.