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The Cr/N–TiO2 and Pd/Cr/N–TiO2 were synthesized via sol–gel and photoreduction techniques respectively. Subsequently, optimized samples were utilized as photocatalyst agent to degradation of methyl orange under visible light. Tetraisopropyl orthotitanate, chromium nitrate Cr(NO3)3·9H2O, palladium nitrate Pd(NO3)2 and triethylamine was used as precursors. The crystalline structure, morphology, particle...
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