Abstract
In this paper, we synthesized a chain-like organic cation structure directing agent L·Cl(2) by reacting triethylenediamine with 1,2-bis(2-chloroethoxy)ethane. We then used a room temperature volatilization method to react L·Cl(2) with inorganic metal salts to synthesize five organic-inorganic hybrid supramolecules: {[L][HgI(4)]} (1), {[L][CdI(4)]} (2), {[(L)(Cu(2)I(3))]·[CuI(2)]CH(3)CN}(n) (3) {[L][CoCl(3)](2)} (4), and {[L][Ce(NO(3))(5)·(H(2)O)(2)]} (5) (L=1,1'-((ethane-1,2-diylbis(oxy))bis(ethane-2,1-diyl))bis(1,4-diazabicyclo [2.2.2]octan-1-ium) chloride). The compounds were characterized by X-ray diffraction, infrared spectroscopy, elemental analysis, and thermogravimetric analysis. Compounds 1, 2, and 5 are mononuclear anion compounds, while compound 3 is a 1D chain, and 4 is a binuclear anion compound. The results showed that 10 mg of compound 3 achieved 92.22% of tetracycline degradation efficiency in the initial TC solution pH = 7. The optimal conditions such as solution pH, catalyst dosage, and solution temperature for the photocatalytic degradation of TC wastewater by compound 3 were explored. Moreover, the photocatalytic degradation efficiency of compound 3 was above 86% each time after four cycles, indicating a good recyclability. The mechanism of photocatalytic degradation was also discussed.