Modified Titanium Dioxide Helps Industry Development

China is a big importer and exporter of titanium dioxide. However, with the development of social economy, in order to solve the shortage of titanium resources in titanium dioxide production, reduce environmental pollution, and increase the utilization of titanium dioxide resources, the traditional single titanium dioxide has been gradually replaced by modified titanium dioxide. How to characterize the composition and structure of modified titanium dioxide has become a real problem that quality inspection departments need to solve.

Difficult to identify the development speed of the development of China's titanium dioxide industry began in the 50s of last century, since 1998, driven by the downstream industries such as construction, coatings, shaping paper, showing rapid development momentum, and become the world's largest titanium dioxide Producer and consumer countries. In 2011, the annual production capacity of titanium dioxide in China has exceeded 2 million tons. It is expected that by the end of the “Twelfth Five-Year Plan”, the annual production capacity of titanium dioxide will increase to 5 million tons.

China's import and export of titanium dioxide is relatively large. In 2010, China imported 269,037 tons of titanium dioxide, and exported 266,380 tons of titanium dioxide in 2010. In 2011, China imported 22,860 tons of titanium dioxide, and in 2011, a total of 398,131 tons of titanium dioxide was exported.

In China's import and export of titanium dioxide products, the proportion of modified titanium dioxide gradually increased. Take Jiangsu Zhenti Chemical Co., Ltd., one of the national large-scale titanium dioxide production backbone enterprises, as an example. In 2011, the company exported inorganic treated modified titanium dioxide and some organically treated modified titanium dioxide to more than 20,000 tons, accounting for the total 68% of the output, titanium dioxide produced by Nanjing Titanium Chemical Co., Ltd. accounts for more than 80% of the total output.

Since February 2012, AQSIQ and the General Administration of Customs have incorporated titanium dioxide into the list of strong inspection commodities. At present, China's existing standards for the detection of titanium dioxide GB/T1706-2006 "Titanium Dioxide Pigment", only the routine testing of titanium dioxide has been stipulated, the performance of the modified characterization of titanium dioxide detection and identification of vacancies.

Focused on the successful development of the subject Researchers synthesized the three most common modified titanium dioxide for research, namely organic surface modified titanium dioxide, ion-doped titanium dioxide, biomass carbon-supported titanium dioxide, including ion-doped titanium dioxide Doped iron and zinc were respectively selected, and each of the doped titanium dioxides had three different concentrations of 0.5%, 5%, and 30%, respectively, and biomass-supported titanium dioxide was also selected at 1%, 5%, and 10%, respectively. 20% of the four concentrations, and four methods X-ray diffraction (XRD), scanning electron microscopy (SEM), electron energy spectrum (EDS), infrared spectroscopy (FTIR) on the internal structure and surface properties of titanium dioxide Systematic analysis and in-depth study of the effects of different ions, different doping levels and loading ratios were carried out to determine the structural differences between nanometer-sized titanium dioxide with different modification technologies and unmodified products. The entire project was conducted a total of hundreds of experiments.

In order to increase the added value of modified titanium dioxide, with the help of the Nanjing Institute of Soil Science, Chinese Academy of Sciences, we have overcome the problem of how ion doping and biomass carbon loading affect the degradation of chloramphenicol pesticide contaminants in water. The application of modified titanium dioxide in purifying the environment and improving the performance of coatings.

The characterization methods of modified titanium dioxide established by the work in the current long-term research project include X-ray diffraction (XRD), scanning electron microscopy (SEM), and electron energy spectroscopy (EDS). Infrared spectroscopy (FTIR) four kinds of test methods, and analysis of the application of each test method in different modification techniques, has a strong theoretical guidance and practicality for the identification of modified titanium dioxide in factories and enterprises. The significance has been promoted and applied in some titanium dioxide production enterprises in Jiangsu; Jiangsu Zhenti Chemical Co., Ltd. has planned to introduce relevant identification technology for the quality control of the modified titanium dioxide production process, which will greatly improve the accuracy of corporate quality control. Sex and reliability.

At present, most of the imported and exported titanium dioxide is modified titanium dioxide, and the price of modified titanium dioxide is often higher than that of unmodified titanium dioxide. The establishment of this identification technology is conducive to the determination of modified titanium dioxide and eliminates the phenomenon of confusion. Wait.

The application of the modified titanium dioxide in the coating and degradation of organic pollutants studied in this topic will help the titanium dioxide enterprise to upgrade and upgrade, increase the added value of titanium dioxide, and expand the application of titanium dioxide. It has strong application guidance. Has a certain social and economic benefits.