Abstract: A fastener structure comprising a connection member, a fastener and a rotation member. The connection member has an active portion having a first magnetic member, the fastener has a housing having one end thereof provided with a limit portion, and the rotation member is rotatably pivotally connected to another end of the housing. The rotation member has a fourth magnetic member, when a connection portion of the connection member is engaged with and fastened in the limit portion for fixing, the rotation member rotates and enables the fourth magnetic member to be magnetically attached and fixed to the first magnetic member.

Abstract: A carbon-separated ultrafine nano WC material and a method of preparing the same as well as a use thereof, wherein the carbon-separated ultrafine nano WC material is prepared by a method comprising the following steps: (1) a solution of a tungsten source in deionized water is added into a solution prepared from ethanol, concentrated ammonia and a surfactant, wherein the tungsten source is ammonium metatungstate, sodium tungstate or tungsten chloride, and the surfactant is sodium dodecyl benzene sulfonate, ammonium hexadecyl trimethyl bromide or P123; resorcinol is added after intimate agitation; formaldehyde is then added after intimate agitation; and then agitation at room temperature is continued for 8-28 h to produce a mixed solution; (2) the mixed solution is subjected to hydrothermal reaction, and a mixed polymer is obtained after drying; and (3) the mixed polymer is carburized at a high temperature in CO atmosphere to produce the carbon-separated ultrafine nano WC material.

Abstract: Disclosed are WC/CNT, WC/CNT/Pt composite material and preparation process therefor and use thereof. The WC/CNT/Pt composite material comprises mesoporous spherical tungsten carbide with diameter of 1-5 microns, carbon nanotubes and platinum nanoparticles, with the carbon nanotubes growing on the surface of the mesoporous spherical tungsten carbide and expanding outward, and the platinum nanoparticles growing on the surfaces of the mesoporous spherical tungsten carbide and carbon nanotubes. The WC/CNT composite material comprises mesoporous spherical tungsten carbide with diameter of 1-5 microns, and carbon nanotubes growing on the surface of the mesoporous spherical tungsten carbide and expanding outward. The WC/CNT/Pt composite material can be used as an electro-catalyst in a methanol flue battery, significantly improving the catalytic conversion rate and the service life of the catalyst.

Abstract: Disclosed are WC/CNT, WC/CNT/Pt composite material and preparation process therefor and use thereof. The WC/CNT/Pt composite material comprises mesoporous spherical tungsten carbide with diameter of 1-5 microns, carbon nanotubes and platinum nanoparticles, with the carbon nanotubes growing on the surface of the mesoporous spherical tungsten carbide and expanding outward, and the platinum nanoparticles growing on the surfaces of the mesoporous spherical tungsten carbide and carbon nanotubes. The WC/CNT composite material comprises mesoporous spherical tungsten carbide with diameter of 1-5 microns, and carbon nanotubes growing on the surface of the mesoporous spherical tungsten carbide and expanding outward. The WC/CNT/Pt composite material can be used as an electro-catalyst in a methanol flue battery, significantly improving the catalytic conversion rate and the service life of the catalyst.