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Formation of monometallic Au and Pd and bimetallic Au–Pd nanoparticles confined in mesopores via Ar glow-discharge plasma reduction and their catalytic applications in aerobic oxidation of benzyl alcohol

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Formation of monometallic Au and Pd and bimetallic Au–Pd nanoparticles confined in mesopores via Ar glow-discharge plasma reduction and their catalytic applications in aerobic oxidation of benzyl alcohol
นักวิจัย : Chen, Yuanting , Wang, Houpeng , Liu, Chang-jun , Zeng, Zhiyuan , Zhang, Hua , Zhou, Chunmei , Jia, Xinli , Yang, Yanhui
คำค้น : -
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2555
อ้างอิง : Chen, Y., Wang, H., Liu, C.-J., Zeng, Z., Zhang, H., Zhou, C., et al. (2012). Formation of monometallic Au and Pd and bimetallic Au–Pd nanoparticles confined in mesopores via Ar glow-discharge plasma reduction and their catalytic applications in aerobic oxidation of benzyl alcohol. Journal of Catalysis, 289, 105-117. , 0021-9517 , http://hdl.handle.net/10220/17517 , http://dx.doi.org/10.1016/j.jcat.2012.01.020
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Journal of catalysis
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Successfully prepared via Ar glow-discharge plasma reduction, Au–Pd bimetallic nanoparticles were highly active in the selective oxidation of benzyl alcohol, showing a rate constant of 0.50 h−1, which was 12.5 and 2× that of Au and Pd monometallic catalysts, respectively. Characterization analyses attributed the enhancement in both activity and selectivity to a Pd-rich shell/Au-rich core structure with abundant surface-coordination-unsaturated Pd atoms of those effectively confined and well-dispersed Au–Pd nanoparticles. As a green, efficient, and safe protocol, plasma reduction outperformed conventional H2 thermal reduction due to the different particle nucleation and growth mechanism, which afforded modified morphology and surface chemistry of metal nanoparticles. Further oxidation and re-reduction of plasma-reduced Au–Pd catalyst resulted in the atomic rearrangement of nanoparticles, leading to inferior catalytic performance.

บรรณานุกรม :
Chen, Yuanting , Wang, Houpeng , Liu, Chang-jun , Zeng, Zhiyuan , Zhang, Hua , Zhou, Chunmei , Jia, Xinli , Yang, Yanhui . (2555). Formation of monometallic Au and Pd and bimetallic Au–Pd nanoparticles confined in mesopores via Ar glow-discharge plasma reduction and their catalytic applications in aerobic oxidation of benzyl alcohol.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Chen, Yuanting , Wang, Houpeng , Liu, Chang-jun , Zeng, Zhiyuan , Zhang, Hua , Zhou, Chunmei , Jia, Xinli , Yang, Yanhui . 2555. "Formation of monometallic Au and Pd and bimetallic Au–Pd nanoparticles confined in mesopores via Ar glow-discharge plasma reduction and their catalytic applications in aerobic oxidation of benzyl alcohol".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Chen, Yuanting , Wang, Houpeng , Liu, Chang-jun , Zeng, Zhiyuan , Zhang, Hua , Zhou, Chunmei , Jia, Xinli , Yang, Yanhui . "Formation of monometallic Au and Pd and bimetallic Au–Pd nanoparticles confined in mesopores via Ar glow-discharge plasma reduction and their catalytic applications in aerobic oxidation of benzyl alcohol."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2555. Print.
Chen, Yuanting , Wang, Houpeng , Liu, Chang-jun , Zeng, Zhiyuan , Zhang, Hua , Zhou, Chunmei , Jia, Xinli , Yang, Yanhui . Formation of monometallic Au and Pd and bimetallic Au–Pd nanoparticles confined in mesopores via Ar glow-discharge plasma reduction and their catalytic applications in aerobic oxidation of benzyl alcohol. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2555.