Un-biodegradable pharmaceuticals are one of the major growing threats in the wastewaters. In the current study, TiO₂ thin film photocatalysts were designed by nanocrystal engineering and fabricated for degradation of the acetaminophen (ACE) in a photocatalytic reaction under UV light irradiation in batch and continuous systems. The photocatalyst was prepared by sputtering and then engineered by thermal treatment (annealing at 300°C (T300) and 650°C (T650)). The annealing effects on the crystallinity and photocatalytic activity of the TiO₂ film were completely studied; it was found that annealing at higher temperatures increases the surface roughness and grain size which are favorable for photocatalytic activity due to the reduction in the recombination rate of photo-generated electron-hole pairs. For the continuous system, a flat plate reactor (FPR) was designed and manufactured. The photocatalytic performance was decreased with the increase of flow rate because the higher flow rate caused to form the thicker film of the liquid in the reactor and reduced the UV light received by photocatalyst. The reusability and durability of the samples after 6 h of photocatalytic reaction showed promising performance for the T650 sample (annealed samples in higher temperatures).

不可生物降解的药物是废水中日益严重的威胁之一。在当前的研究中，通过纳米晶体工程设计并制造了TiO ₂薄膜光催化剂，以分批和连续方式在紫外光的光催化反应中降解对乙酰氨基酚（ACE）。通过溅射制备光催化剂，然后通过热处理（在300°C（T300）和650°C（T650）退火）进行工程处理。退火对TiO ₂结晶度和光催化活性的影响电影被完全研究过；已经发现，由于降低了光生电子-空穴对的复合速率，在较高温度下的退火增加了表面粗糙度和晶粒尺寸，这有利于光催化活性。对于连续系统，设计并制造了平板反应器（FPR）。随着流量的增加，光催化性能下降，这是因为较高的流量导致在反应器中形成较厚的液体膜，并减少了光催化剂接收到的紫外线。在光催化反应6小时后，样品的可重复使用性和耐用性显示出T650样品（在较高温度下退火的样品）的良好性能。