Huyen Tran Thi Thuong, Chi Tran Thi Kim, Dung Nguyen Duc, Kosslick Hendrik, Liem Nguyen Quang
Institute of Materials Science (IMS), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam.
Institute of Chemistry, Department of Inorganic Chemistry, University of Rostock, Albert-Einstein-Str. 3a, Rostock 18051, Germany.
Nanomaterials (Basel). 2018 Apr 25;8(5):276. doi: 10.3390/nano8050276.
Rutile TiO₂ with highly active facets has attracted much attention owing to its enhanced activity during the photocatalytic degradation of pollutants such as pharmaceuticals in wastewater. However, it is difficult to obtain by controlling the synthetic conditions. This paper reports a simple hydrothermal synthesis of rutile TiO₂ nanorods with highly exposed {110} facets. The obtained rutile was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM), and Raman spectroscopy. The main contribution to the photocatalytic activity comes from rutile nanorods with highly dominant active {110} facets, which were studied in the photodegradation of reactive cinnamic acid and more recalcitrant ibuprofen. The contribution of active species was also investigated. The present work further confirmed the hydrothermal synthesis route for controlling the preparation of highly crystalline and active rutile nanocrystals.
具有高活性晶面的金红石型二氧化钛因其在光催化降解废水中的药物等污染物过程中活性增强而备受关注。然而，通过控制合成条件来获得它却很困难。本文报道了一种简单的水热合成法，可制备出具有高度暴露{110}晶面的金红石型二氧化钛纳米棒。通过X射线衍射（XRD）、扫描电子显微镜（SEM）、高分辨率透射电子显微镜（HR-TEM）和拉曼光谱对所得金红石进行了表征。光催化活性的主要贡献来自具有高度占主导地位的活性{110}晶面的金红石纳米棒，这在活性肉桂酸和更难降解的布洛芬的光降解中得到了研究。还研究了活性物种的贡献。目前的工作进一步证实了水热合成路线可用于控制制备高结晶度和活性的金红石纳米晶体。
