Xue Zhehua, Wang Ting, Chen Bingdi, Malkoske Tyler, Yu Shuili, Tang Yulin
State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science & Engineering, Tongji University, Shanghai 200092, China.
The Institute for Advanced Materials and Nano Biomedicine, Tongji University, Shanghai 200092, China.
Materials (Basel). 2015 Sep 18;8(9):6360-6378. doi: 10.3390/ma8095310.
BiFeO₃ particles (BFO) were prepared by a simple hydrothermal method and characterized. BFO was pure, with a wide particle size distribution, and was visible light responsive. Tetracycline was chosen as the model pollutant in this study. The pH value was an important factor influencing the degradation efficiency. The total organic carbon (TOC) measurement was emphasized as a potential standard to evaluate the visible light photocatalytic degradation efficiency. The photo-Fenton process showed much better degradation efficiency and a wider pH adaptive range than photocatalysis or the Fenton process solely. The optimal residual TOC concentrations of the photocatalysis, Fenton and photo-Fenton processes were 81%, 65% and 21%, while the rate constants of the three processes under the same condition where the best residual TOC was acquired were 9.7 × 10, 3.2 × 10 and 1.5 × 10 min, respectively. BFO was demonstrated to have excellent stability and reusability. A comparison among different reported advanced oxidation processes removing tetracycline (TC) was also made. Our findings showed that the photo-Fenton process had good potential for antibiotic-containing waste water treatment. It provides a new method to deal with antibiotic pollution.
通过简单的水热法制备并表征了BiFeO₃颗粒（BFO）。BFO纯净，粒径分布较宽，且具有可见光响应性。本研究选择四环素作为模型污染物。pH值是影响降解效率的重要因素。强调将总有机碳（TOC）测量作为评估可见光光催化降解效率的潜在标准。光芬顿过程比单独的光催化或芬顿过程具有更好的降解效率和更宽的pH适应范围。光催化、芬顿和光芬顿过程的最佳残留TOC浓度分别为81%、65%和21%，而在获得最佳残留TOC的相同条件下，这三个过程的速率常数分别为9.7×10⁻³、3.2×10⁻²和1.5×10⁻¹ min⁻¹。证明BFO具有优异的稳定性和可重复使用性。还对不同报道的去除四环素（TC）的高级氧化过程进行了比较。我们的研究结果表明，光芬顿过程在含抗生素废水处理方面具有良好的潜力。它为处理抗生素污染提供了一种新方法。
Zotero 插件
