School of Chemistry and Chemical Engineering, School of Pharmacy, School of Agricultural Equipment Engineering Institute of Agricultural Engineering, Jiangsu University, Zhenjiang, 212013, PR China.
School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, PR China.
Chemosphere. 2022 Nov;307(Pt 3):135909. doi: 10.1016/j.chemosphere.2022.135909. Epub 2022 Aug 5.
The novel BaFeO/BiMoO composite materials were constructed as magnetically recyclable photo-Fenton-like degradation systems. The composite catalyst not only promoted the effective transfer of photo-generated electrons and improved the Mo/Mo cycle consequent, but also activated hydrogen peroxide to generate oxidizing free radicals. BaFeO/BiMoO-0.25 exhibited an outstanding degradation performance for tetracycline hydrochloride it is 1.3 times to BiMoO. The thermal catalytic performance of the BiMoO monomer is similar to that of the BaFeO/BiMoO material without light. However, the removal rate of BaFeO/BiMoO material reaches 84.5% after 60 min with light, far exceeding that of BiMoO material. By way of the contrast experiment with light and without light, it is further demonstrated that interfacial interaction between BaFeO and BiMoO acted a key role in the photocatalytic reaction system. It is also a good advantage that pollutants can be efficiently degraded without adjusting the pH. The characterization of photocurrent and X-ray photoelectron spectroscopy (XPS) also further proved the synergy between the two materials, which is useful to the separation of electrons and holes. The synergy ultimately improves the degradation performance. Besides, BaFeO/BiMoO can be easily separated by an external magnetic field after the photocatalytic activity reaction owing to BaFeO's magnetic properties. It provides a new research idea for the construction and iron-based heterogeneous Fenton-like system for magnetic degradation of antibiotics.
新型 BaFeO/BiMoO 复合材料被构建为可磁回收的类芬顿光催化降解体系。该复合催化剂不仅促进了光生电子的有效转移，提高了 Mo/Mo 循环效率，而且还能激活过氧化氢产生氧化自由基。BaFeO/BiMoO-0.25 对盐酸四环素的降解性能非常优异，是 BiMoO 的 1.3 倍。BiMoO 单体的热催化性能与无光照时的 BaFeO/BiMoO 材料相似。然而，在光照下，BaFeO/BiMoO 材料 60 分钟后的去除率达到 84.5%，远高于 BiMoO 材料。通过有光和无光的对比实验，进一步证明了 BaFeO 和 BiMoO 之间的界面相互作用在光催化反应体系中起着关键作用。另一个优点是无需调节 pH 值即可高效降解污染物。光电流和 X 射线光电子能谱（XPS）的表征也进一步证明了两种材料之间的协同作用，这有助于电子和空穴的分离。协同作用最终提高了降解性能。此外，由于 BaFeO 的磁性，BaFeO/BiMoO 在光催化活性反应后可以很容易地通过外部磁场进行分离。这为构建铁基类芬顿体系和抗生素的磁降解提供了新的研究思路。
