In this project, lanthanum oxide doped tin oxide (SnLaO) nanomaterial was prepared and characterized morphologically and physiochemically by different techniques. The catalytic performance of SnLaO was assessed toward catalytic reduction of 4-nitrophenol (4-NP), methyl orange (MO), congo red (CR), methylene blue (MB) and potassium ferricyanide (K[Fe(CN)]). SnLaO was found to be efficient for K[Fe(CN)] in the presence of NaBH, which reduced in only 8.0 min. SnLaO was further wrapped in carboxymethyl cellulose mixed calcium alginate (CMC-Alg) hydrogel beads because the powder catalyst cannot be simply recovered from reaction media to recycle and use again. SnLaO wrapped CMC-Alg (SnLaO/CMC-Alg) was assessed for detail analysis of K[Fe(CN)] reduction. The effect of NaBH, K[Fe(CN)] concentration and amount of catalyst was optimized using SnLaO/CMC-Alg. The amount of catalyst has positive impact on catalytic reduction of K[Fe(CN)]. The kinetic study revealed that K[Fe(CN)] reduction by SnLaO and SnLaO/CMC-Alg was fast, which completed in 8.0 and 4.0 min with rate constant of 0.4283 min and 0.7461 min, respectively. These findings indicated that the developed SnLaO/CMC-Alg is best and proficient nanocatalyst for K[Fe(CN)] reduction. The efficiency along with cost-effective and simple treatment route of the developed nanocatalyst have prospect to compete and replace the reputable commercial catalysts.
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