A porous photocatalyst concrete filter was successfully produced to remove NOx, by mixing TiO2 photocatalyst with lightweight aerated concrete. Ultra Fine Bubbles were used to form continuous pores inside the porous photocatalytic concrete filter, which was mixed via a bubble generation experiment. The optimal mixing condition was determined to be with 4% of the bubble generation agent B. NO removal specimens were prepared for various photocatalytic loading conditions, and the specimen containing 3% P-25 removed NO at a concentration of 1.03 μmol in 1 h. The NO removal rate of the porous photocatalytic concrete filter prepared in this study was 10.99%. This photocatalytic filter performance was more than 9 times the amount of NO removed by a general photocatalytic filter. The porous photocatalyst concrete filter for removing NOx developed in this study can be applied to various construction sites and the air quality can be solved by reducing NOx contributing to the formation of fine particles.

Abstract
1. 서 론
2. 연구방법
    2.1. 재료
    2.2. 최적 기포 발생 조건 도출
    2.3. 다공성 광촉매 콘크리트 필터 시편 제조 방법
    2.4. 다공성 광촉매 콘크리트 필터 시편 특성 분석
    2.5. NO 저감 비교 평가 실험
3. 결 과
    3.1. 최적의 기포 발생조건 도출
    3.2. 다공성 광촉매 콘크리트 필터 시편의 SEM 분석 결과
    3.3. NO 저감 비교 실험 결과
    3.4. 반응속도 상수 도출
4. 결 론
Acknowledgments
References

• 김종규(신한대학교 도시기반부동산학과) | Jong Kyu Kim (Department of Urban and Real Estate Development Engineering, Shinhan University, Uijeongbu 11644, Republic of Korea) Corresponding author