Fig. 7From: Facile synthesis, characterization and enhanced catalytic reduction of 4-nitrophenol using NaBH4 by undoped and Sm3+, Gd3+, Hf3+ doped La2O3 nanoparticlesUV-Vis spectra of 4-NP reduction with undoped and doped La2O3 NPs at final time (90 min)Back to article page