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- W1567382555 abstract "An attempt to decrease Cr(VI) ions in the solution which is more toxic than Cr(III) has performed by assisting the photoreduction of Cr(VI) ions catalysed by oxide Cd(II) supported in the zeolite pores (CdO-zeolite). The research consists of preparation, characterization, and photoactivity examination of CdO-zeolite. The preparation was carried out by ion-exchange method, which was followed by oxidation by flowing oxygen gas at 300oC. Analysis to determine the Cd adsorbed by zeolite and characterization to determine Eg as photocatalyst character was carried out by AAS and diffuses reflectance UV-Visible spectrophotometry (DRUV-Vis) methods, respectively. Photoreduction process was carried out in a closed reactor by radiating a suspension of Cr(VI) solution and CdO-zeolite with UV lamp for period of times. The concentration of unreduced Cr(VI) in the solution was determined by UV-Visible spectrophotometer as biphenyl carbacide complex. The results of the analysis and characterization indicated that the amount of Cd in CdO-zeolite is 46,832 mg/g and Eg of CdO-zeolite (3,26 eV) is larger than Eg of CdO (2,38 eV). Photocatalytic examination showed that the photoreduction results are proportional with the Eg values,i.e the results of Cr(VI) catalyzed by CdO-zeolit are higher than that of by CdO. Photoreduction of 50 mL solution Cr(VI) 25 ppm at pH = 7 catalyzed by 50 mg CdO- zeolite for 25 hours has given maximum result of 65,89 %. Keywords: photoreduction, zeolite." @default.
- W1567382555 created "2016-06-24" @default.
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- W1567382555 date "2010-06-08" @default.
- W1567382555 modified "2023-09-29" @default.
- W1567382555 title "STUDY OF Cr(VI) PHOTOREDUCTION CATALYZED BY CDO-ZEOLITE" @default.
- W1567382555 doi "https://doi.org/10.22146/ijc.21923" @default.
- W1567382555 hasPublicationYear "2010" @default.
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