Shao Qi, Liu Jiaqi, Chen Qiwang, Yu Jing, Luo Zhongbao, Guan Rongqiang, Lin Zichen, Li Mingxuan, Li Yi, Liu Cong, Li Yan
School of Electrical and Information, Jilin Engineering Normal University, Changchun 130052, China.
School of Metallurgy, Northeastern University, Shenyang 110819, China.
Materials (Basel). 2025 Jan 5;18(1):202. doi: 10.3390/ma18010202.
Phthalocyanine-sensitized TiO significantly enhances photocatalytic performance, but the method of phthalocyanine immobilization also plays a crucial role in its performance. In order to investigate the effect of the binding strategy of phthalocyanine and TiO on photocatalytic performance, a dual-pathway study has been conducted. On the one hand, zinc-tetra (-carbonylacrylic) aminephthalocyanine (Pc) was directly grafted onto the surface of FeO@SiO@TiO (FST). On the other hand, Pc was immobilized on a silane coupling agent ((3-aminopropyl) triethoxysilane) grafted onto the surface of the FST. Through photocatalytic experiments on the two types of composite materials synthesized, the results showed that the photocatalyst obtained by directly sensitizing Pc (FSTP) exhibited better performance on rhodamine B(RhB) removal than did the other photocatalyst using the silane coupling agent (FSTAP). Further mechanistic studies showed that directly sensitized FSTP exhibited more efficient photogenerated electron-hole pair separation, whereas FSTAP linked by a silane coupling agent created an additional transport distance that might greatly affect the photogenerated electron transport. Therefore, the dual-pathway research in this work provides new guidance for efficiently constructing phthalocyanine-sensitized TiO photocatalysts.
酞菁敏化的二氧化钛显著提高了光催化性能，但酞菁的固定方法对其性能也起着关键作用。为了研究酞菁与二氧化钛的结合策略对光催化性能的影响，进行了一项双途径研究。一方面，将四（羰基丙烯酸）胺基锌酞菁（Pc）直接接枝到FeO@SiO@TiO（FST）的表面。另一方面，将Pc固定在接枝到FST表面的硅烷偶联剂（（3-氨丙基）三乙氧基硅烷）上。通过对合成的两种复合材料进行光催化实验，结果表明，直接敏化Pc得到的光催化剂（FSTP）在去除罗丹明B（RhB）方面比使用硅烷偶联剂的另一种光催化剂（FSTAP）表现出更好的性能。进一步的机理研究表明，直接敏化的FSTP表现出更有效的光生电子-空穴对分离，而通过硅烷偶联剂连接的FSTAP产生了额外的传输距离，这可能会极大地影响光生电子的传输。因此，这项工作中的双途径研究为高效构建酞菁敏化的二氧化钛光催化剂提供了新的指导。
