化学
光催化
光降解
甲基橙
光化学
间苯二酚
水溶液
罗丹明B
聚合物
超分子化学
高分子化学
晶体结构
结晶学
有机化学
催化作用
作者
Hui Yuan,Ping Shang,Jie Yang,Qing Huang,Ling Song,Xuan-Feng Jiang
出处
期刊:Inorganic Chemistry
[American Chemical Society]
日期:2023-01-31
卷期号:62 (6): 2652-2662
被引量:2
标识
DOI:10.1021/acs.inorgchem.2c03587
摘要
Coordination polymers (CPs) have recently emerged as promising candidates for heterogeneous photocatalysis due to their structural designability and tunable properties. Herein, we developed two novel Ag(I)-calix[4]arene coordination polymers with the formula {[Ag2(μ-NO3)L1]}n (CP 1) and {[AgL1]·PF6}n (CP 2) (L1 = 2-mercapto-5-methyl-1,3,4-thiadiazole resorcinol calix[4]arene). Crystallography revealed that anion coordination and self-inclusion behavior induced the cavitand and silver ions to self-assemble into well-defined CPs 1 and 2 with different topological coordination frameworks, respectively. Furthermore, CPs 1 and 2 display high photocatalytic activity for the photodegradation of rhodamine B (RhB) and methyl orange (MO) in an aqueous solution under mild conditions (WLED and UV irradiation). The comparison results demonstrate that CP 1 exhibited better photocatalytic performance than CP 2, which correlated well with the differences in their molecular structure and HOMO–LUMO energy gaps. The photocatalysis products and possible intermediates were successfully monitored and determined using mass spectrum, gas chromatography, and electron paramagnetic resonance measurements. The rational photocatalysis mechanism was further investigated and proposed.
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