In this study, cotton fabrics decorated with Ag/AgCl and Ag/AgBr NPs were produced by a simple hydrothermal treatment using AgCl and AgBr as precursors. Their morphological features as well as, chemical composition and structural and luminescence properties were compared. Their water disinfection aptitude against E. coli and S. aureus was also investigated under solar illumination in batch as well asin dynamic conditions. The highest activity was observed for Cot-Ag/AgCl with a quasi-complete inactivation of E. coli and S. aureus(1.5 × 10⁷cfu mL⁻¹) within 15 min illumination. Disinfection efficiency under continuous flow was also tested using a home-made photoreactor and the cotton fabrics with the most efficient photocatalyst (Ag/AgCl). It has shown to be efficient at least for 10 cycles revealing the robustness of the functionalization. The mechanism of photocatalytic disinfection was explained in terms of the surface plasmon resonance (SPR) induced by the presence of Ag NPs, the resulting holes, h⁺, being one of the most intervenient species in the disinfection mechanism. The difference in the photocatalytic efficiency between AgCl and AgBr functionalized cotton was attributed to differences in the carriers (h⁺and e-) lifetime. This work provides a proof of concept for the potential applicability of Cot-Ag/AgCl or Cot-Ag/AgBr for in-flow potabilization of water under solar illumination.

在这项研究中，以AgCl和AgBr为前体，通过简单的水热处理处理了用Ag / AgCl和Ag / AgBr NPs装饰的棉织物。比较了它们的形态特征，化学组成以及结构和发光性能。还在日光照射下以及在动态条件下研究了它们对大肠杆菌和金黄色葡萄球菌的水消毒能力。观察到Cot-Ag / AgCl的活性最高，大肠杆菌和金黄色葡萄球菌几乎完全失活（1.5×10 ⁷ cfu mL ^-1）在15分钟内照明。还使用自制的光反应器和具有最有效光催化剂（Ag / AgCl）的棉织物测试了连续流动下的消毒效率。它显示出至少10个周期的效率，显示了功能化的鲁棒性。根据Ag NPs的存在引起的表面等离子体共振（SPR）解释了光催化消毒的机理，由此产生的空穴h ⁺是消毒机理中最介入的物种之一。AgCl和AgBr功能化棉之间光催化效率的差异归因于载体的差异（h ⁺和e-）寿命。这项工作为Cot-Ag / AgCl或Cot-Ag / AgBr在太阳光照下对水进行流入碳酸化处理的潜在适用性提供了概念证明。