期刊
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
卷 29, 期 24, 页码 36854-36864出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-022-18661-w
关键词
TiN; Structural optimization; Tetracycline hydrochloride; Photocatalytic degradation
资金
- Huzhou Municipal Science and Technology Bureau Research Project [21606150, 61775139]
- [2021ZD2043]
This study synthesized titanium nitride (TiN) with an advantageous structure and demonstrated its enhanced photocatalytic degradation performance compared to pure phase TiN. The TiN synthesized at a heating rate of 6℃/min showed the best degradation efficiency, achieving a removal rate of 90% after 10 minutes of dark reaction and 90 minutes of photo-degradation.
As a broad-spectrum antibiotic, tetracycline has become a potential ecological hazard. Herein, titanium nitride (TiN), with an advantageous structure, was synthesized by simple heating rate regulation and constructed for tetracycline hydrochloride (TC-HCl) degradation under light irradiation. All the samples were characterized by X-ray diffraction (XRD), N-2-adsorption/ desorption isotherm, ultraviolet-visible diffuse reflectometry (DRS), scanning electron microscopy (SEM), and electrochemical impedance spectroscopy (EIS). The results showed that the as-prepared TiN-x catalysts exhibited obviously enhanced photocatalytic property toward TC-HCl degradation compared with the commercial pure phase TiN (p-TiN). According to the results of photocatalytic degradation, TiN synthesized at 6 degrees C/min heating rate had the best removal rate of TC-HCl (90%) after dark reaction for 10 min and photo-degradation for 90 min. In addition, the trapping experiments have demonstrated that the photogenerated holes -(h(+)) and superoxide radical (center dot O-2(-)) are the main oxidation products of the present system. Strikingly, the reuse experiments showed high stability of TiN.
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