Silver nanoparticles (Ag NPs) based catalysts are highly attractive for catalytic reactions. In this work, self-supported Ag NPs were successfully synthesized through in situ reduction of AgZr2(PO4)3 (AZP) NASICON-type phosphate using NaBH4 as both a reducing agent (BH4ˉ) and a source of compensator ions (Na+). The growth and self-adhesion of Ag NPs on the AZP surface and the compensation of Ag+ vacancies by Na+ inside the NASICON lattice were confirmed using various characterization techniques. The Ag NPs/Ag1-xNaxZr2(PO4)3 composite was then evaluated by the conversion of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP). The experimental results indicated that the as-fabricated catalyst revealed excellent performance, where ∼99% reduction of 4-NP to 4-AP occurred in just 420 s by using only 2 mg of AZP. Additionally, the catalyst showed long-term stability throughout reuse after 10 consecutive cycles and can be recovered and recycled several times with no appreciable loss of catalytic activity.
|Number of pages||12|
|Journal||Materials Research Bulletin|
|Publication status||Published - Jun 2022|
- 4-nitrophenol catalytic reduction
- In situ silver nanoparticles synthesis
- NASICON-type phosphate