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Electrospinning Ag-TiO2 Nanorod-Loaded Air Treatment Filters and Their Applications in Air Purification

机译：静电纺丝AG-TiO2纳米棒的空气处理过滤器及其在空气净化中的应用

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The efficient treatment of the problem of air pollution is a practical issue related to human health. The development of multi-functional air treatment filters, which can remove various kinds of pollutants, including particulate matter (PM) and organic gases, is a tireless pursuit aiming to address the actual needs of humans. Advanced materials and nano-manufacturing technology have brought about the opportunity to change conventional air filters for practical demands, with the aim of achieving the high-efficiency utilization of photons, a strong catalytic ability, and the synergetic degradation of multi-pollutants. In this work, visible-responding photocatalytic air treatment filters were prepared and combined with a fast and cost-effective electrospinning process. Firstly, we synthesized Ag-loaded TiO nanorod composites with a controlled size and number of loaded Ag nanoparticles. Then, multi-functional air treatment filters were designed by loading catalysts on electrospinning nanofibers combined with a programmable brush. We found that such Ag-TiO nanorod composite-loaded nanofibers displayed prominent PM filtration (~90%) and the degradation of organic pollutants (above 90%). The superior performance of purification could be demonstrated in two aspects. One was the improvement of the adsorption of pollutants derived from the increase of the specific surface area after the loading of catalysts, and the other was the plasmonic hot carriers, which induced a broadening of the optical absorption in the visible light range, meaning that many more photons were utilized effectively. The designed air treatment filters with synergistic effects for eliminating both PM and organic pollutants have promising potential for the future design and application of novel air treatment devices.
机译：高效处理空气污染问题是与人类健康有关的实际问题。多功能空气处理过滤器的开发，可去除各种污染物，包括颗粒物质（PM）和有机气体，是一种不懈的追求，旨在解决人类的实际需求。先进的材料和纳米制造技术带来了改变传统空气过滤器的实践需求的机会，目的是实现光子的高效利用，强烈的催化能力和多污染物的协同降解。在这项工作中，制备可见光响应的光催化空气处理过滤器并结合快速且经济高效的静电纺丝过程。首先，我们合成了具有受控尺寸和负载Ag纳米颗粒的受控尺寸和数量的Ag加载的TiO纳米棒复合材料。然后，通过在静电纺丝纳米纤维上加载催化剂与可编程刷加载催化剂来设计多功能空气处理过滤器。我们发现，这种AG-TiO纳米棒复合纳米纤维显示出突出的PM过滤（〜90％）和有机污染物的降解（高于90％）。可以在两个方面上证明纯化的优异性能。一个是在催化剂负载后，改善污染物衍生自特定表面积增加的污染物，另一个是等离子体热载体，其诱导了可见光范围内的光学吸收，这意味着许多有效地利用了更多的光子。设计的空气处理过滤器具有协同效应，用于消除PM和有机污染物的未来设计和应用的有希望的潜力。

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