A study on the photodegradiation of 4-hydroxy-biphenylcarboxylic acid by

The relationship between the orientation of molecules adsorbed on $_TiO2$ and their photoproducts was examined by employing HBPCA (4-hydroxy-biphenylcarboxylic acid) as a model organic pollutant. For this purpose, the Photoproducts after irradiation with UV radiation at various pH were compared by utilizing UV and Raman spectroscopies. It was found from these studies that pH affected the photoproducts probably due to the different orientations of the adsorbed molecules, and that the orientation of the adsorbed molecules and their photoproducts were closely correlated.

에 의한 4-hydroxy-biphenylcarboxylic acid의 광분해 연구

HBPCA를 유기질 공해물질의 모델로서 선정하고 $TiO_2$에 흡착시켜서 흡착된 분자의 배향성과 광분해 생성물의 관계에 대하여 조사하였다. 용액의 pH를 변화시켜서 UV광을 조사한 뒤 생성된 광분해 생성물을 UIF와 Raman 분광기로 스펙트럼을 얻어 분석 비교하였다. 용액의 pH는 흡착된 분자의 배향에 영향을 미쳐서 광분해 생성물이 달라지며, 흡착된 분자의 배향과 광분해 생성물과의 관계는 아주 밀접하게 관련되어 있음을 확인하였다.