Thiourea bridged periodic mesoporous organosilica with ultra-small Pd nanoparticles for coupling reactions

Esmail Doustkhah; Sadegh Rostamnia; Masataka Imura; Yusuke Ide; Shiva Mohammadi; Christopher J. T. Hyland; Jungmok You; Nao Tsunoji; Behzad Zeynizadeh; Yusuke Yamauchi

doi:10.1039/C7RA11711F

Thiourea bridged periodic mesoporous organosilica with ultra-small Pd nanoparticles for coupling reactions†

Esmail Doustkhah,^abc Sadegh Rostamnia,

*^a Masataka Imura,^b Yusuke Ide,

^b Shiva Mohammadi,^a Christopher J. T. Hyland,

*^d Jungmok You,^e Nao Tsunoji,

^f Behzad Zeynizadeh^c and Yusuke Yamauchi

*^egh

Author affiliations

* Corresponding authors

^a Department of Chemistry, Faculty of Science, University of Maragheh, Maragheh 55181-83111, Iran
E-mail: srostamnia@gmail.com

^b International Center for Materials Nanoarchitechtonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan

^c Department of Chemistry, Faculty of Science, Urmia University, Urmia 57159-165, Iran

^d School of Chemistry, University of Wollongong, Wollongong, New South Wales, Australia
E-mail: chrhyl@uow.edu.au

^e Department of Plant & Environmental New Resources, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 446-701, South Korea

^f Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima, Hiroshima 739-8527, Japan

^g Australian Institute for Innovative Materials (AIIM), University of Wollongong, Squires Way, North Wollongong, NSW 2500, Australia
E-mail: yusuke@uow.edu.au

^h School of Chemical Engineering & Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD 4072, Australia

Abstract

A synthesis of thiourea-bridged mesoporous organosilica is reported. Using transmission electron microscopy, low-angle XRD measurements and N₂ adsorption–desorption isotherms the formation of a highly ordered mesoporous structure with a high surface area (>400 m² g⁻¹) has been confirmed. Deposition of Pd nanoparticles inside the mesopores resulted in a material that showed excellent catalytic activity in a Suzuki-coupling reaction and retained this activity over several consecutive runs.

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Thiourea bridged periodic mesoporous organosilica with ultra-small Pd nanoparticles for coupling reactions†

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Thiourea bridged periodic mesoporous organosilica with ultra-small Pd nanoparticles for coupling reactions

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