Mn-TiO2 composite photocatalytic material and preparation method and application thereof

• Main Authors: CHEN DONGBIN, DING JINGYA, WANG BAILIN, CHENG FENG, XU QI
• Format: Patent
• Language: Chinese; English
• Published: 04.09.2020
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention discloses an Mn-TiO2 composite photocatalytic material and a preparation method and application thereof. The Mn-TiO2 composite photocatalytic material is of a rod structure and comprises, by mass, 0.25 wt%-20 wt% of Mn (NO3) 2 and TiO2, and in the rod structure, Mn atoms are evenly loaded on TiO2. The preparation method comprises the following steps: modifying rutile-phase TiO2 to prepare rodlike TiO2, and loading Mn to prepare Mn-TiO2. Compared with rutile-phase TiO2, Mn-TiO2 is fine in structure, rod-shaped and large in specific surface area, Mn is successfully loaded on TiO2,effective separation of photon-generated carriers is facilitated due to the proper catalyst size, sufficient contact with catalyzed substances is facilitated and the catalytic effect is enhanced. 本发明公开了一种Mn-TiO复合光催化材料及其制备方法和应用，该材料的结构为棒状，包括质量比为0.25wt％～20wt％的Mn(NO)和TiO，其中，所述棒状结构中，Mn原子均匀地负载在TiO上。制备方法包括对金红石相的TiO改性制备得棒状TiO以及Mn负载制备Mn-TiO。与金红石相的TiO相比，Mn-TiO结构细碎，呈棒状，比表面积较大，Mn成功负载在TiO上，合适的催化剂尺寸有利于光生载流子的有效分离，且有助于充分与被催化物质接触，增强催化效果。