Photocatalytic degradation using TiO₂ is one of the most effective techniques for treating residual emerging compounds present in water. However, practical applications are limited since it only absorbs ultraviolet irradiation. Nitrogen and sulfur (N, S) co-doped TiO₂ nanomaterials (N,S-TiO₂) were prepared by a controlled sol–gel method; the characterization and photocatalytic activity have been studied for the removal of ciprofloxacin antibiotic under UV–Visible light. The interstitial doping of nitrogen and sulfur substitute oxygen and titanium into the TiO₂ lattice, which increases the valence band and decreases the conduction band, respectively. The lowest value band-gap of 2.5 eV and the crystallite size of 5.13 nm compared to other available synthesis methods was observed on N,S-TiO₂ which allowed to broaden the light absorption to the visible region. The low level electron and hole recombination was related by the N, S doping. The optimal ciprofloxacin removal was obtained at pH 5.5, a dosage of 0.05 g, initial concentration of 30 mg L⁻¹ with a removal efficiency of 78.7%. A comparison of the effectiveness of antibiotic treatment of N,S-TiO₂ with synthetic TiO₂ and commercial TiO₂ was also made, taking the potential for regeneration into account. The photocatalytic degradation of ciprofloxacin catalyzed by N,S-TiO₂ was described by pseudo-first-order kinetics.

使用TiO _2进行光催化降解是处理水中残留的新兴化合物的最有效技术之一。但是，由于其仅吸收紫外线辐射，因此实际应用受到限制。氮和硫（N，S）共掺杂的TiO ₂纳米材料（N，S-TiO ₂）是通过可控的溶胶-凝胶法制备的。已经研究了在紫外可见光下去除环丙沙星抗生素的特性和光催化活性。氮和硫的间隙掺杂将氧和钛掺杂到TiO _2中晶格，分别增加价带和减小导带。与其他可用的合成方法相比，在N，S-TiO ₂上观察到最低的带隙值为2.5 eV，微晶尺寸为5.13 nm，这使光吸收范围扩大到可见区。低水平的电子和空穴复合与N，S掺杂有关。在pH 5.5，剂量为0.05 g，初始浓度为30 mg L ^-1时，环丙沙星的最佳去除效果为78.7％。合成TiO ₂与市售TiO ₂对N，S-TiO ₂的抗生素治疗效果比较还考虑了再生的潜力。用拟一级动力学描述了N，S-TiO ₂催化环丙沙星的光催化降解。