ZnO NRs/rGO Photocatalyst in a Polymer-Based Microfluidic Platform
Author:
Raub Aini Ayunni Mohd1ORCID, Hamidah Ida2, Nandiyanto Asep Bayu Dani2, Ridwan Jaenudin1, Mohamed Mohd Ambri1ORCID, Buyong Muhamad Ramdzan1ORCID, Yunas Jumril1ORCID
Affiliation:
1. Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia (UKM), Bangi 43600, Malaysia 2. Faculty of Engineering Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi 207, Bandung 40154, Indonesia
Abstract
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 cm2. 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.
Funder
Universiti Kebangsaan Malaysia The Indonesian Ministry of Educational Cultural Research and Technology
Subject
Polymers and Plastics,General Chemistry
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