Method for preparing lanthanum hydroxide porous hollow nano-fiber and chain-like nano-fiber

• Main Authors: LIU GUIXIA, DONG XIANGTING, CUI QIZHENG, WANG JINXIAN
• Format: Patent
• Language: Chinese; English
• Published: 28.07.2010
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS; NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING; TEXTILES

The invention relates to a method for preparing lanthanum hydroxide porous hollow nano-fiber and chain-like nano-fiber, which belongs to the technical field of preparing one-dimensional inorganic nanometer materials. The method comprises: (1) a step of preparing spinning solution, which is to dissolve lanthanum nitrate and polyvinylpyrrolidone in distilled water to form spinning solution; (2) a step of preparing PVP/La(NO3)3 composite fiber, which is to adopt an electrostatic spinning technique, voltage of 20 to 25 kV, indoor temperature of 20 to 28 DEG C and relative humidity of 50 to 60 percent; (3) a step of preparing La(OH)3 porous hollow nano-fiber and chain-like nano-fiber, which is to perform heat treatment on the composite fiber. The La(OH)3 porous hollow nano-fiber consists of smaller nano-particles while the solid chain-like nano-fiber consists of bigger particles mutually connected, and the fiber is 500 to 800 nanometers in diameter and more than 100 mu m in length and belongs to the series of hexa