Production technology of nanoscale conductive titanium dioxide

Abstract

The invention relates to a production technology of a nanoscale conductive titanium dioxide and belongs to the technical field of titanium dioxide production. The production technology comprises the following steps: reducing oxidized graphene into graphene, mixing the graphene with titanium dioxide, and finally forming a titanium dioxide-graphene composite material; oxidizing graphite powder with concentrated sulfuric acid and potassium permanganate, and forming the oxidized graphene after centrifugal precipitation; drying and grinding the oxidized graphene into powder, respectively putting the oxidized graphene and titanium dioxide powder into absolute ethyl alcohol, dripping an absolute ethyl alcohol dispersion liquid of the oxidized graphene into the absolute ethyl alcohol dispersion liquid of the titanium dioxide, and adding hydrochloric acid and distilled water to obtain a gel product; and carrying out ageing and ultrasonic cleaning, roasting and grinding the gel product, reducing the oxidized graphene into the graphene, and combining with the titanium dioxide to form conductive titanium dioxide. The nanoscale conductive titanium dioxide is applicable to low-temperature preparation of conductive and antistatic equipment, is also applicable to preparation of a variable-temperature sintered powder material of which the high temperature can reach 1600 DEG C and is applicable to popularization and application in related fields.

Description

technical field [0001] The invention relates to the technical field of titanium dioxide production, in particular to a production process of nanoscale conductive titanium dioxide. Background technique [0002] Conductive titanium dioxide is the surface treatment and semiconductor doping treatment of the prepared nano-titanium dioxide in the production process of nano-titanium dioxide, so that a conductive oxide layer is formed on the surface of the substrate, thereby preparing a new type of electronically conductive functional semiconductor. Pigment or filler, conductive titanium dioxide absorbs less light, has a large scattering ability, and has good optical properties such as gloss, whiteness, decolorization power, and hiding power. It can be made into near-white and other light-colored permanent conductive and anti-static products. , especially suitable for conductive and anti-static products and environments that require high whiteness. Conductive titanium dioxide is non...

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Problems solved by technology

[0003] The existing production process of conductive titanium dioxide mainly adopts physical mixing of titanium dioxide and graphite oxide. The photocatalytic activity of the produced conductive titanium dioxide is limited, and it cannot achieve good optical properties in actual use, and the degradation rate is relatively low. High, cannot well meet the requirements of permanent conductive and anti-static products

[0004] The main principle of the traditional conductive titanium dioxide production method is metal doping modification. For example, the Ceramic Materials Research Office of the Nagoya Institute of Technology, Japan Institute of Industrial Technology has developed a titanium dioxide series of ceramic temperature sensors, thermistors and PTC ceramics. The method Conductive titanium dioxide is prepared by doping niobium and antimony in titanium dioxide under certain conditions. The photocatalytic activity of the prepared conductive titanium dioxide is limited, and it cannot achieve good optical properties in actual use, and the degradation rate is high. Can not meet the requirements of permanent conductivity and anti-static

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