Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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A Study on the Photocatalytic Decomposition of Organic Dyes by Porous Polyethersulfone/TiO2 Composite Membrane

기공형 polyethersulfone/TiO2 복합체 멤브레인의 유기염료분해 반응에 대한 광촉매 특성 연구

  • Chang Hyeon, Song (Department of Polymer Engineering, Pukyong National University) ;
  • Youngeup, Jin (Department of Industrial Chemistry, Pukyong National University) ;
  • Won Ki, Lee (Department of Polymer Engineering, Pukyong National University) ;
  • Seong Il, Yoo (Department of Polymer Engineering, Pukyong National University)
  • 송창현 (부경대학교 고분자공학과) ;
  • 진영읍 (부경대학교 공업화학과) ;
  • 이원기 (부경대학교 고분자공학과) ;
  • 유성일 (부경대학교 고분자공학과)
  • Received : 2022.12.08
  • Accepted : 2023.01.09
  • Published : 2023.02.10
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Abstract

Composite membranes consisting of TiO2 nanoparticles (NPs) and porous polymers have been widely utilized in photocatalytic water treatment because the composite membranes can allow an easy recovery of NPs after the photocatalytic reaction as well as the reduction of fouling in the membrane. However, the photocatalytic efficiency of the immobilized TiO2 NPs in the composite membranes has been discussed to a limited degree. In this study, we prepared polyethersulfone (PES)/TiO2 composite membranes to study the photocatalytic decomposition of organic dyes under light illumination. The decomposition kinetics of dye molecules by the PES/TiO2 composite membranes and colloidal TiO2 NPs have been compared to discuss the photocatalytic efficiency of NPs before and after their immobilization on the polymer membrane.

광촉매 기반의 수처리 공정에서 TiO2 나노입자와 기공형 고분자로 구성된 복합체 멤브레인은 광촉매 반응후 나노입자를 회수하기 용이하다는 장점과 멤브레인 파울링(fouling) 억제가 가능하다는 측면에서 다양하게 연구되어 왔다. 하지만, TiO2 나노입자가 복합체 멤브레인에 고착된 이후 나노입자의 광촉매 특성이 어떻게 변할지에 대한 연구는 상대적으로 많이 진행되지 않았다. 이러한 측면에서, 본 연구에서는 polyethersulfone (PES)/TiO2 복합체 멤브레인을 제조하고 유기염료분해 반응에 대한 광촉매 특성을 연구하였다. 복합체 멤브레인에 고착된 TiO2 나노입자의 염료분해반응 속도를 콜로이드 상에서 분산된 TiO2 나노입자와 비교함으로써 멤브레인에 고착화되기 전후의 TiO2 나노입자의 촉매 효율을 비교하였다.

Keywords

Acknowledgement

이 논문은 2022년 부경대학교 국립대학육성사업 지원비에 의하여 연구되었음. 이 논문은 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임 (NRF-2019R1A2C1086269)

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