Challenges and opportunities in the bottom-up mechanochemical synthesis of noble metal nanoparticles

Author(s)

de Oliveira, Paulo F. M. ^{[1, 2]} ; Torresi, Roberto M. ^[1] ; Emmerling, Franziska ^[2] ; Camargo, Pedro H. C. ^[3]

Affiliation

^[1] Univ Sao Paulo, Dept Quim Fundamental, Inst Quim, Av Lineu Prestes 748, BR-05508000 Sao Paulo - Brazil

^[2] BAM Fed Inst Mat Res & Testing, Richard Willstatter Str 11, D-12489 Berlin - Germany

^[3] Univ Helsinki, Dept Chem, AI Virtasen Aukio 1, Helsinki - Finland

• Document type: Review article
• Source: JOURNAL OF MATERIALS CHEMISTRY A; v. 8, n. 32, p. 16114-16141, AUG 28 2020.
• Web of Science Citations: 23

Abstract

Mechanochemistry is a promising alternative to solution-based protocols across the chemical sciences, enabling different types of chemistries in solvent-free and environmentally benign conditions. The use of mechanical energy to promote physical and chemical transformations has reached a high level of refinement, allowing for the design of sophisticated molecules and nanostructured materials. Among them, the synthesis of noble metal nanoparticles deserves special attention due to their catalytic applications. In this review, we discuss the recent progress on the development of mechanochemical strategies for the controlled synthesis of noble metal nanostructures. We start by covering the fundamentals of different preparation routes, namely top-down and bottom-up approaches. Next, we focus on the key examples of the mechanochemical synthesis of non-supported and supported metal nanoparticles as well as hybrid nanomaterials containing noble metals. In these examples, in addition to the principles and synthesis mechanisms, their performances in catalysis are discussed. Finally, a perspective of the field is given, where we discuss the opportunities for future work and the challenges of mechanochemical synthesis to produce well-defined noble metal nanoparticles. (AU)

• FAPESP's process: 15/26308-7 - Optimization of the physicochemical properties of nano -structured materials for applications in molecular recognition, catalysis and energy conversion/storage
• Grantee: Roberto Manuel Torresi
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 19/01619-0 - Elucidating the mechanisms of noble metal nanoparticles formation in solid-state mechanochemical ball milling conditions using in situ techniques
• Grantee: Paulo Filho Marques de Oliveira
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor