3D printed, plastic photocatalytic flow reactors for water purification
3D printed, plastic photocatalytic flow reactors for water purification
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DOI：
10.1007/s43630-022-00242-y
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发表时间：
2022-05
影响因子：
3.1
通讯作者：
Ruicheng Zhou;R. Han;M. Bingham;C. O’Rourke;A. Mills
中科院分区：
文献类型：
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作者：
Ruicheng Zhou;R. Han;M. Bingham;C. O’Rourke;A. Mills
3D打印被认为是一种快速，廉价，可重复的原型生产方法，但也很快被认为是一种可扩展的先进制造工艺。描述了两种类型的实验室规模的3D打印塑料、固定膜、流通式光催化反应器，这两种反应器都是正弦形状的，不同之处在于一种没有挡板，反应器A，而另一种有反应器B。两个反应器都衬有P25 TiO 2/聚乳酸（PLA）涂层，其在UVA预处理后用于光催化漂白亚甲蓝（MB）或苯酚（PhOH）的循环水溶液，可重复进行，而没有任何明显的活性损失。MB的光催化漂白率表现出的reactorB比reactorA显示出低得多的依赖于流速，由于挡板产生的层流流的更大的横向混合。反应器A的光催化漂白MB和PhOH的光子效率分别为0.025%和0.052%，光催化时空产率（PSTY）分别为0.98 × 10− 4和1.49 × 10− 4 m3反应溶液·m− 3反应器体积·天-1.kW −1。这是全塑料3D打印光催化反应器的第一个例子，展示了3D打印用于原型制作的优势。鉴于3D打印是一个可扩展的过程，简要讨论了可能的潜在应用领域。图形摘要
3D printing is known as a fast, inexpensive, reproducible method for producing prototypes but is also fast becoming recognised as a scalable, advanced manufacture process. Two types of lab-scale, 3D printed plastic, fixed-film, flow-through photocatalytic reactors are described, both of which are sinusoidal in shape, and only differ in that one has no baffles, reactorA, whereas the other has, reactorB. Both reactors are lined with a P25 TiO2/polylactic acid (PLA) coating, which, after UVA pre-conditioning, is used to photocatalyse the bleaching of circulating aqueous solutions of either methylene blue, MB, or phenol, PhOH, repeatably, without any obvious loss of activity. The rate of the photocatalysed bleaching of MB exhibited by reactorBshows a much lower dependence upon flow rate than reactorA, due to the greater lateral mixing of the laminar flow streams produced by the baffles. The photonic efficiencies of reactorAfor the photocatalysed bleaching of MB and PhOH were determined to be 0.025% and 0.052%, respectively, and the photocatalytic space-time yields (PSTY) to be 0.98 × 10−4and 1.49 × 10−4m3of reaction solution.m−3reactor volume.day−1.kW−1, respectively. This is the first example of an all plastic, 3D printed photocatalytic reactor and demonstrates the advantages of 3D printing for prototyping. Given the 3D printing is a scalable process, possible potential areas of application are discussed briefly.Graphical abstract