Adala Amina, Debbache Nadra, Sehili Tahar
Department of Chemistry, Mentouri Brothers University, Constantine 1, Constantine 25017, Algeria.
Laboratory of Sciences and Technologies of Environment, BP, 325, Ain El Bey Town, Constantine 25017, Algeria.
ACS Omega. 2022 Mar 14;7(11):9276-9290. doi: 10.1021/acsomega.1c06049. eCollection 2022 Mar 22.
Two coordination polymers CP1 {[Zn(II)(BIPY)(Pht)] } and CP2 {[Zn(HYD)(Pht)] } (BIPY = 4,4'-bipyridine, Pht = terephthalic acid, and HYD = 8-hydroxyquinoline) have been successfully synthesized by a hydrothermal process using zinc aqueous solution. The so-prepared compounds were characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, UV-visible spectroscopy, thermogravimetric analysis (TGA), and cyclic voltammetry. XRD pointed to a crystalline phase for CP1, while CP2 required recrystallization, FTIR spectroscopy established the presence of characteristic bands for all the ligands, and TGA showed thermal stability up to 100 °C. The electrochemical study showed a good charge transfer between the ligands and Zn metal for both materials. The UV-vis spectra displayed a strong absorption band spreading over a wide wavelength range, encompassing UV and visible light, with a band gap of 2.69 eV for CP1 and 2.56 eV for CP2, both of which are smaller than that of ZnO. This provides an advantageous alternative to using ZnO. The 5 × 10 mol L ibuprofen decomposition kinetics under solar and UV light were studied under different irradiation conditions. Good photocatalytic properties were observed due to their high surface area.
通过使用锌水溶液的水热法成功合成了两种配位聚合物CP1 {[Zn(II)(联吡啶)(对苯二甲酸)] }和CP2 {[Zn(8-羟基喹啉)(对苯二甲酸)] }（联吡啶 = 4,4'-联吡啶，对苯二甲酸 = 对苯二甲酸，8-羟基喹啉 = 8-羟基喹啉）。通过X射线衍射（XRD）、傅里叶变换红外（FTIR）光谱、紫外可见光谱、热重分析（TGA）和循环伏安法对如此制备的化合物进行了表征。XRD表明CP1为晶相，而CP2需要重结晶，FTIR光谱确定了所有配体的特征谱带的存在，TGA显示在高达100°C时具有热稳定性。电化学研究表明两种材料的配体与锌金属之间都有良好的电荷转移。紫外可见光谱显示在宽波长范围内有一个强吸收带，涵盖紫外光和可见光，CP1的带隙为2.69 eV，CP2的带隙为2.56 eV，两者均小于ZnO的带隙。这为使用ZnO提供了一种有利的替代方案。研究了在不同辐照条件下5×10 mol L布洛芬在太阳光和紫外光下的分解动力学。由于它们的高表面积，观察到了良好的光催化性能。
