On June 12, 2024, Tianyan's intellectual property information showed that Longbai Group Co., Ltd. applied for a project titled "A Preparation Method of Environmentally Friendly Titanium Dioxide" with the public number CN202311848127.4, and the application date is December 2023.

The patent abstract shows that the present application discloses a preparation method of environmentally friendly titanium dioxide, which comprises the following steps: taking molten salt, mixing well with fully ground titanium dioxide raw product, manganese salt and cerium salt, and then calcining at 300 - 400℃, removing excess molten salt after post-treatment, and obtaining environmentally friendly titanium dioxide rich in asymmetric oxygen vacancies; The addition ratios of the manganese salt and the cerium salt are 2 - 5% and 0.05 - 0.25% of the raw titanium dioxide product in terms of moles. The environmentally friendly titanium dioxide prepared by this method is rich in asymmetric oxygen vacancies, which makes the environmentally friendly titanium dioxide have lasting stability and reactivity.