Synthesis And Characterization N-TiO2-Chitosan Photocatalyst And The Application As Purification Of Air Embung Unnes

Emas Agus Prastyo Wibowo, Navela Rahma Aji, Resti Ujiningtyas, Tri Maya Sari, Rahmawati Rahmawati


Nowadays, the condition of water reservoir is alarming because it looks more cloudy and dirty caused by contamination of waste. So, it can’t be used as the first function as a rain shelter by Unnes and its surroundings. The purpose of this research is to provide a solution as an effort to return the function of water ponds with a purifier based on photocatalysts N-TiO2-chitosan, which when exposed to the UV rays and a visible ray will produce OH radical compounds which serve as degrading organic pollutants and superoxide compounds functioning kill bacteria. Based on the results of SEM (Scanning Electron Microscopy), TiO2 can be concluded that: In the SEM magnification 100x, 250x, 500x, and 1000x seen that the coated material has not been good. It is still lumpy and uneven while based on the results of XRD, TiO2 crystal size is 13.54 nm. The result of COD and BOD using photocatalyst TiO2-chitosan decrease from20 ppm to 16.55 ppm and 60.70 ppm to 49.37 ppm (Wibowo et al., 2016). In this research is added doped N on TiO2-chitosan. So, the using of photocatalyst N-TiO2-chitosan hoped can give the better result to degrade organic pollutants in water and reduce both COD and BOD.

Keywords—N-TiO2 –chitosan; Photocatalysts; Water reservoir

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