Multidentate polyoxometalate modification of metal nanoparticles with tunable electronic states

• Published in: Dalton transactions : an international journal of inorganic chemistry Vol. 53; no. 26; pp. 1188 - 1193
• Main Authors: Xia, Kang, Yatabe, Takafumi, Yamaguchi, Kazuya, Suzuki, Kosuke
• Format: Journal Article
• Language: English
• Published: England Royal Society of Chemistry 02.07.2024
• Subjects: Catalytic activity; Electron states; Nanoparticles; Palladium; Polyoxometallates; Silver
• ISSN: 1477-9226; 1477-9234; 1477-9234
• DOI: 10.1039/d4dt01218f

To respond to the increasing demands for practical applications, stabilization and property modulation of metal nanoparticles have emerged as a key research subject. Herein, we present a viable protocol for preparing small metal nanoparticles (<5 nm; Ag, Pd, Pt, and Ru) via multidentate polyoxometalate (POM, [SiW 9 O 34 ] 10− ) modification. In addition to enhancing stability, the POMs can modulate the electronic states of metal nanoparticles. Moreover, immobilization of the POM-modified metal nanoparticles on solid supports enables further tuning of the electronic states via a cooperative effect between the POMs and the supports without altering the particle size. Notably, POM-modified Pd nanoparticles on carbon support exhibited superior catalytic activity and selectivity in hydrogenation reactions in comparison with the catalyst without the POM modification. We present a protocol for preparing metal nanoparticles (<5 nm; Ag, Pd, Pt, and Ru) via multidentate polyoxometalate (POM) modification with enhanced stability and catalytic activity. The electronic states can be modulated by POMs and supports.