Raub Aini Ayunni Mohd, Hamidah Ida, Nandiyanto Asep Bayu Dani, Ridwan Jaenudin, Mohamed Mohd Ambri, Buyong Muhamad Ramdzan, Yunas Jumril
Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia (UKM), Bangi 43600, Malaysia.
Faculty of Engineering Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi 207, Bandung 40154, Indonesia.
Polymers (Basel). 2023 Mar 31;15(7):1749. doi: 10.3390/polym15071749.
This paper reports the development of ZnO NRs/rGO-based photocatalysts integrated into a tree-branched polymer-based microfluidic reactor for efficient photodegradation of water contaminants. The reactor system includes a photocatalytic reactor, tree-branched microfluidic channels, and ZnO nanorods (NRs) coated with reduced graphene oxide (rGO) on a glass substrate within an area of 0.6 × 0.6 cm. The ZnO NRs/rGO acts as a photocatalyst layer grown hydrothermally and then spray-coated with rGO. The microfluidic system is made of PDMS and fabricated using soft lithography (micro molding using SU-8 master mold patterned on a silicon wafer). The device geometry is designed using AutoCAD software and the flow properties of the microfluidics are simulated using COMSOL Multiphysics. The microfluidic platform's photocatalytic process aims to bring the nanostructured photocatalyst into very close proximity to the water flow channel, reducing the interaction time and providing effective purification performance. Our functionality test showed that a degradation efficiency of 23.12 %, within the effective residence time of less than 3 s was obtained.
本文报道了一种集成在树枝状聚合物基微流控反应器中的基于ZnO纳米棒/还原氧化石墨烯（rGO）的光催化剂，用于高效光降解水中污染物。该反应器系统包括一个光催化反应器、树枝状微流控通道，以及在面积为0.6×0.6 cm的玻璃基板上涂覆有还原氧化石墨烯（rGO）的ZnO纳米棒（NRs）。ZnO纳米棒/rGO用作通过水热法生长然后喷涂rGO的光催化剂层。微流控系统由聚二甲基硅氧烷（PDMS）制成，并使用软光刻技术（使用在硅晶片上图案化的SU-8主模具进行微成型）制造。使用AutoCAD软件设计器件几何形状，并使用COMSOL Multiphysics模拟微流控的流动特性。微流控平台的光催化过程旨在使纳米结构的光催化剂非常靠近水流通道，减少相互作用时间并提供有效的净化性能。我们的功能测试表明，在有效停留时间小于3秒的情况下，降解效率达到了23.12%。
