Deciphering the mechanistic insights of 4-nitrophenol reduction catalyzed by a 1D–2D Bi2S3 nanostructured catalyst
Exploring the reaction mechanism and the role of a catalyst in the conversion of pollutants to value-added products is vital for sustainable development. Herein, a polyvinylpyrrolidone-assisted liquid-phase reflux strategy was utilized to synthesize anisotropic 1D–2D Bi2S3 nanostructures. The as-syn...
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Published in | Nanoscale Vol. 16; no. 16; pp. 8060 - 8073 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Cambridge
Royal Society of Chemistry
25.04.2024
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Abstract | Exploring the reaction mechanism and the role of a catalyst in the conversion of pollutants to value-added products is vital for sustainable development. Herein, a polyvinylpyrrolidone-assisted liquid-phase reflux strategy was utilized to synthesize anisotropic 1D–2D Bi2S3 nanostructures. The as-synthesized nanostructures were used as catalysts in batch experiments for 4-nitrophenol (4-NP) reduction and they exhibited an apparent rate constant (kapp), turnover frequency (TOF), and activation energy (Ea) of 0.441 min−1, 1.543 h−1 and 26.13 kJ mol−1, respectively. Also, the effects of catalyst dosage, NaBH4 amount, 4-NP concentration, solvents, pH, and common ions were evaluated. Isotope labeling and kinetic isotope effects (KIEs) confirm that water is the proton source in 4-NP reduction. Electrochemical studies revealed that the nanostructured 1D–2D Bi2S3 enables the dissociation of BH4− into active absorbed and adsorbed hydrogen ([Formula Omitted]) species and assists in the catalytic reduction of 4-NP. This study offers a new insight into designing an efficient nanostructured 1D–2D Bi2S3 catalyst for 4-nitrophenol reduction. |
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AbstractList | Exploring the reaction mechanism and the role of a catalyst in the conversion of pollutants to value-added products is vital for sustainable development. Herein, a polyvinylpyrrolidone-assisted liquid-phase reflux strategy was utilized to synthesize anisotropic 1D-2D Bi2S3 nanostructures. The as-synthesized nanostructures were used as catalysts in batch experiments for 4-nitrophenol (4-NP) reduction and they exhibited an apparent rate constant (kapp), turnover frequency (TOF), and activation energy (Ea) of 0.441 min-1, 1.543 h-1 and 26.13 kJ mol-1, respectively. Also, the effects of catalyst dosage, NaBH4 amount, 4-NP concentration, solvents, pH, and common ions were evaluated. Isotope labeling and kinetic isotope effects (KIEs) confirm that water is the proton source in 4-NP reduction. Electrochemical studies revealed that the nanostructured 1D-2D Bi2S3 enables the dissociation of BH4- into active absorbed and adsorbed hydrogen () species and assists in the catalytic reduction of 4-NP. This study offers a new insight into designing an efficient nanostructured 1D-2D Bi2S3 catalyst for 4-nitrophenol reduction. Exploring the reaction mechanism and the role of a catalyst in the conversion of pollutants to value-added products is vital for sustainable development. Herein, a polyvinylpyrrolidone-assisted liquid-phase reflux strategy was utilized to synthesize anisotropic 1D–2D Bi2S3 nanostructures. The as-synthesized nanostructures were used as catalysts in batch experiments for 4-nitrophenol (4-NP) reduction and they exhibited an apparent rate constant (kapp), turnover frequency (TOF), and activation energy (Ea) of 0.441 min−1, 1.543 h−1 and 26.13 kJ mol−1, respectively. Also, the effects of catalyst dosage, NaBH4 amount, 4-NP concentration, solvents, pH, and common ions were evaluated. Isotope labeling and kinetic isotope effects (KIEs) confirm that water is the proton source in 4-NP reduction. Electrochemical studies revealed that the nanostructured 1D–2D Bi2S3 enables the dissociation of BH4− into active absorbed and adsorbed hydrogen ([Formula Omitted]) species and assists in the catalytic reduction of 4-NP. This study offers a new insight into designing an efficient nanostructured 1D–2D Bi2S3 catalyst for 4-nitrophenol reduction. |
Author | Barhoi, Ashok Mahto, Bhagirath Hussain, Sahid Haider, Ali |
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SubjectTerms | Bismuth sulfides Catalysts Chemical reduction Chemical synthesis Liquid phases Nanostructure Nitrophenol Polyvinylpyrrolidone Reaction mechanisms Sustainable development |
Title | Deciphering the mechanistic insights of 4-nitrophenol reduction catalyzed by a 1D–2D Bi2S3 nanostructured catalyst |
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