In this research, a Zn ion-doped laponite® photocatalyst material (ZnLP) is synthesized using ZnCl2, which has a high solubility and fast ionization properties, and laponite®, which has a large specific surface area with a high light transparency and excellent ion exchangeability. Using this, we reviewed the photolysis efficiency of trichloroethylene (TCE), one of the main representative substances of recalcitrant (non-degradable) organic compounds. Laponite® (5, 10, and 15 wt%, respectively) and ZnCl2 (30 wt%) are mixed in a 2 : 1 ratio and then filtered, dried, and pulverized (ZLC); this is followed by calcination in an electric furnace for 30 min at temperatures of 300, 500, and 600 oC, respectively. To verify the Zn compound crystal formation, X-ray diffraction (XRD) analysis is performed and the TCE optical resolution is reviewed using a gas chromatograph (GC). At XRD-result calcination temperatures of 500 and 600 oC degrees, respectively, ZnO and ZnMgSi2O6 crystals are formed, and through GC analysis, the ZnLP's TCE resolution is verified to be excellent. The resultant ZnLP, including the TCE, are determined to be applicable as new photocatalyst material with sufficient beneficial effects in the decomposition of recalcitrant organic compounds.

Keywords: ZnO, Laponite®®, TCE, Zn ion, Clay mineral, Organic pollutant