Photocatalytic Nanojunction of Cobalt Ferrite Anchored Sulfonated Graphene for Reduction of Nitrophenols

Abstract

A coprecipitation method was employed to synthesize a CoFe 2 O 4 anchored sulfonated graphene nanojunction for visible light photocatalytic reduction of 2-nitrophenol, 4-nitrophenol, and 2,4,6trinitrophenol in the presence of NaBH 4 . The effect of the extent of anchoring of CoFe 2 O 4 on the catalytic performance of the nanojunction was investigated. Photoreduction of all the nitrophenols was studied at different pH range. The performance of the catalyst in the presence of different cations, anions, and scavengers was also studied. The amount of NaBH 4 and reduction time is significantly lowered in the presence of this nanocatalyst. This nanojunction exhibits a superior magnetic property and can be easily separated from the reaction mixture, exhibits good stability, has better reusability, and could be a potential candidate in wastewater treatment.

Deciphering the mechanistic insights of 4-nitrophenol reduction catalyzed by a 1D–2D Bi2S3 nanostructured catalyst

“…The formation of Ca(BH 4 ) 2 promoted the release of BH 4 − ions, thereby speeding up the reduction rates. 70,71 Despite having a stronger Lewis acid character than Ca 2+ , Mg 2+ exhibited a lower reduction rate as compared to Ca 2+ . This contrasting behavior is attributed to cation coordination ability.…”

A sulfonated graphene supported nano copper MoS2 network for non-enzymatic simultaneous sensing of dopamine and serotonin

“…It was inferred from the plot that the MoS 2 /SG/CuNP-modified electrode is more stable compared to the MoS 2 /SG electrode. 67 To evaluate the selectivity and performance of the electrode, CV with ions like K + , Na + , Zn 2+ , Cl − , NO 3− , and SO 4 2− (1 mM solutions each) was recorded in both the analytes (DA and 5-HT) under ambient conditions (Fig. S7(d), ESI†).…”

“…It was inferred from the plot that the MoS 2 /SG/CuNPmodified electrode is more stable compared to the MoS 2 /SG electrode. 67 To evaluate the selectivity and performance of the electrode, CV with ions like K + , Na + , Zn 2+ , Cl À , NO 3À , and SO 4…”