지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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The photodegradations of pyrene, chrysene and benzo[a]pyrene that were similar in structure among polycyclic aromatic hydrocarbons (PAHs) were investigated with a low-pressure mercury lamp(the wavelength of 253.7 ㎚ and UV output of 1.35x10^(-3) J/s). The optimum concentrations of TiO<sub>2</sub> and H<sub>2</sub>O<sub>2</sub< on the photodegradation of pyrene, chrysene and benzo[a]pyrene were 1 g/L and 1.5 x 10^(-3) M, respectively. By these optimum concentrations, their rates increased with increasing the concentration of TiO<sub>2</sub> and H<sub>2</sub>O<sub>2</sub< because the amounts of OH radical formed increased, but for the higher concentrations than the optimum, their rates decreased with increasing those concentrations because the white turbidity phenomena occurs in case of TiO<sub>2</sub> and H<sub>2</sub>O<sub>2</sub< acts as an OH radical inhibitor. The photodegradation rates among the photodegradation processes such as UV, UV/TiO<sub>2</sub>, UV/H<sub>2</sub>O<sub>2</sub<, and UV/H<sub>2</sub>O<sub>2</sub</TiO<sub>2</sub> decreased in the following sequences: UV/H<sub>2</sub>O<sub>2</sub</TiO<sub>2</sub>＞ UV/H<sub>2</sub>O<sub>2</sub<＞ UV/TiO<sub>2</sub>＞ UV.
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