ABSTRACT

In this study, we synthesized and modified titanate nanotubes (TNTs) under different conditions of acid rinsing and calcination. The produced materials were then characterized by transmission electron microscopy, X-ray diffraction, ultraviolet–visible spectroscopy, temperature programmed desorption, inductively coupled plasma atomic emission spectroscopy, and Brunauer–Emmett–Teller analysis. The activity of material was evaluated via its application for disinfection of Coliforms and removal of natural organic matters (NOMs) in river water. Results showed that TNTs rinsed at pH 1.6 and calcined at 500°C had the highest removal efficiency for the treatment of Coliforms and NOMs in Sai Gon river water, possibly due to its high surface area, crystallinity, and surface acidity. The application of this TNTs material for the treatment of waters from Dong Nai River and Mekong River also show high removal efficiency, which could meet the quality standard for supply water, suggesting the potential of TNTs for practical drinking water treatment.

摘要

在这项研究中，我们在不同的酸洗和煅烧条件下合成和改性钛酸盐纳米管 (TNT)。然后通过透射电子显微镜、X 射线衍射、紫外-可见光谱、程序升温脱附、电感耦合等离子体原子发射光谱和 Brunauer-Emmett-Teller 分析对生产的材料进行表征。通过其对大肠菌群的消毒和去除河水中天然有机物 (NOM) 的应用来评估材料的活性。结果表明，在 pH 1.6 下冲洗和在 500°C 下煅烧的 TNT 对大肠菌群的处理具有最高的去除效率和西贡河水中的 NOM，可能是由于其高表面积、结晶度和表面酸度。这种 TNTs 材料在处理同奈河和湄公河水体中的应用也表现出很高的去除效率，可以满足供水质量标准，这表明 TNTs 在实际饮用水处理中的潜力。