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Titania-Supported gold nanoparticles as efficient catalysts for the oxidation of cellobiose to organic acids in aqueous medium

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Titania-Supported gold nanoparticles as efficient catalysts for the oxidation of cellobiose to organic acids in aqueous medium
นักวิจัย : Amaniampong, Prince N. , Li, Kaixin , Jia, Xinli , Wang, Bo , Borgna, Armando , Yang, Yanhui
คำค้น : DRNTU::Science::Chemistry
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2557
อ้างอิง : Amaniampong, P. N., Li, K., Jia, X., Wang, B., Borgna, A., & Yang, Y. (2014). Titania-Supported Gold Nanoparticles as Efficient Catalysts for the Oxidation of Cellobiose to Organic Acids in Aqueous Medium. ChemCatChem, 6(7), 2105-2114. , 1867-3880 , http://hdl.handle.net/10220/19746 , http://dx.doi.org/10.1002/cctc.201402096
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : ChemCatChem
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Titania-supported gold nanoparticles were prepared by using the deposition–precipitation method, followed by reduction under a hydrogen flow. The catalytic activity of these as-prepared catalysts was explored in the oxidation of cellobiose to gluconic acid with molecular oxygen, and the properties of these catalysts were examined by using XRD, TEM, temperature-programmed desorption of NH3, energy-dispersive X-ray spectroscopy, UV/Vis, and X-ray photoemission spectroscopy (XPS). The catalyst sample reduced at high temperature demonstrated an excellent catalytic activity in the oxidation of cellobiose. The characterization results revealed the strong metal–support interaction between the gold nanoparticles and titania support. Hydrogen reduction at higher temperatures (usually >600 °C) plays a vital role in affording a unique interface between gold nanoparticles and titania support surfaces, which thus improves the catalytic activity of gold/titania by fine-tuning both the electronic and structural properties of the gold nanoparticles and titania support.

บรรณานุกรม :
Amaniampong, Prince N. , Li, Kaixin , Jia, Xinli , Wang, Bo , Borgna, Armando , Yang, Yanhui . (2557). Titania-Supported gold nanoparticles as efficient catalysts for the oxidation of cellobiose to organic acids in aqueous medium.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Amaniampong, Prince N. , Li, Kaixin , Jia, Xinli , Wang, Bo , Borgna, Armando , Yang, Yanhui . 2557. "Titania-Supported gold nanoparticles as efficient catalysts for the oxidation of cellobiose to organic acids in aqueous medium".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Amaniampong, Prince N. , Li, Kaixin , Jia, Xinli , Wang, Bo , Borgna, Armando , Yang, Yanhui . "Titania-Supported gold nanoparticles as efficient catalysts for the oxidation of cellobiose to organic acids in aqueous medium."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2557. Print.
Amaniampong, Prince N. , Li, Kaixin , Jia, Xinli , Wang, Bo , Borgna, Armando , Yang, Yanhui . Titania-Supported gold nanoparticles as efficient catalysts for the oxidation of cellobiose to organic acids in aqueous medium. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2557.