First Author:Ai, Yongjian
Correspondence Author:Hong-bin Sun,Qionglin Liang
Co author:Yongjian Ai, Lei Liu, Cheng Zhang, Li Qi, Mengqi He, Zhe Liang, Guoan Luo
Journal:ACS Applied Materials & Interfaces
Issue:38
Volume:10
Impact Factor:8.7
DOI number:10.1021/acsami.8b10711
Affiliation of Author(s):Department of Chemistry, Northeastern University
Teaching and Research Group:物理化学
Place of Publication:UNITED STATES
Abstract:Fabrication of anilines from the corresponding nitroaromatics is a hot topic both for academia and for industry; however, conducting this protocol in water over a noble-metal-free catalytic system is still a great challenge. Continuous efforts are being made on exploiting novel catalysts for this transformation. In this work, we developed a scalable method for synthesizing the uniform flowerlike amorphous alpha-FeOOH hierarchical supraparticles. The well-defined amorphous alpha-FeOOH was prepared through an environmentally benign method, which is hydrolysis of the self-assembled iron glycolate at room temperature. Compared with other iron-only catalysts, this flowerlike amorphous alpha-FeOOH hierarchical supraparticle catalyst exhibits the best performance in the catalytic reduction of nitroaromatics to corresponding anilines by using water as the reaction solvent (turn over frequency is 106 h(-1) for 4-nitrophenol in water). The further results indicated that the amorphous structure, special nanostructures, and adsorption-desorption synergy offered excellent activity. The kinetics study shows that the reduction of 4-nitrophenol is first order for alpha-FeOOH, and the apparent active energy E-a is 75.9 kJ mol(-1). Furthermore, this catalyst can be used for eight times without obvious catalytic activity loss. We believe that this novel flowerlike amorphous alpha-FeOOH hierarchical supraparticle catalyst is a milestone in the reduction of nitro compounds.
Key Words:alpha-FeOOH; amorphous; hierarchical supraparticles; heterogeneous catalysis; hydrogen transfer reaction
Document Code:WOS:000446142100039
Discipline:Natural Science
First-Level Discipline:Chemistry
Page Number:32180-32191
ISSN No.:1944-8244
Translation or Not:no