Co0.85Se bundle-like nanostructure catalysts for hydrogenation of 4-nitrophenol to 4-aminophenol

Autor:	Xianwen Wei, Zai-Xian Zhang, Xian-Wen Wang, Juan Cheng, Meng-Li Zhao, Kong-Lin Wu, Changjiang Yu, Jiang Ming, Yao-Xiang Yue
Rok vydání:	2014
Předmět:	Nanostructure Chemistry 4-Aminophenol Enthalpy Kinetics Nanoparticle 4-Nitrophenol General Chemistry Activation energy Catalysis chemistry.chemical_compound Materials Chemistry Organic chemistry Nuclear chemistry
Zdroj:	New J. Chem.. 38:6147-6151
ISSN:	1369-9261 1144-0546
Popis:	This study demonstrated the preparation of Co0.85Se bundle-like nanostructures (BNs) by a template-directed approach under solvothermal conditions. The Co0.85Se BNs were utilized as catalysts in the reduction of 4-nitrophenol in the presence of NaBH4. The kinetics of the reduction of 4-nitrophenol at three different reaction temperatures were investigated to evaluate the catalytic activity of the Co0.85Se BNs. The activation energy (Ea), activation enthalpy (ΔH‡), and activation entropy (ΔS‡) of the Co0.85Se BNs and Co0.85Se nanoparticles (NPs) are 14.66 kJ mol−1, 12.15 kJ mol−1, 42.51 J mol−1 K−1, and 17.78 kJ mol−1, 16.55 kJ mol−1, 50.66 J mol−1 K−1, respectively. The above results revealed that the Co0.85Se BNs exhibited a higher catalytic performance for the hydrogenation of 4-nitrophenol by NaBH4 than that of the Co0.85Se NPs at room temperature. It is believed that the prepared Co0.85Se BNs have potential applications in catalysis.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::297e1dfe617395a8fa606f26f392d7b6 https://doi.org/10.1039/c4nj01358a Zobrazit plný text záznamu