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Metal-cluster-decorated TiO2 nanotube arrays : a composite heterostructure toward versatile photocatalytic and photoelectrochemical applications

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Metal-cluster-decorated TiO2 nanotube arrays : a composite heterostructure toward versatile photocatalytic and photoelectrochemical applications
นักวิจัย : Xiao, Fang-Xing , Hung, Sung-Fu , Miao, Jianwei , Wang, Hsin-Yi , Yang, Hongbin , Liu, Bin
คำค้น : DRNTU::Engineering::Materials::Nanostructured materials
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2557
อ้างอิง : Xiao, F.-X., Hung, S.-F., Miao, J., Wang, H.-Y., Yang, H., & Liu, B. (2015). Metal-cluster-decorated TiO2 nanotube arrays : a composite heterostructure toward versatile photocatalytic and photoelectrochemical applications. Small, 11(5), 554-567. , 1613-6810 , http://hdl.handle.net/10220/25150 , http://dx.doi.org/10.1002/smll.201401919
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Small
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Recent years have witnessed increasing interest in the solution-phase synthesis of atomically precise thiolate-protected gold clusters (Aux); nonetheless, research on the photocatalytic properties of Aux–semiconductor nanocomposites is still in its infancy. In this work, recently developed glutathione-capped gold clusters and highly ordered nanoporous layer-covered TiO2 nanotube arrays (NP-TNTAs) are employed as nanobuilding blocks for the construction of a well-defined Aux/NP-TNTA heterostructure via a facile electrostatic self-assembly strategy. Versatile photocatalytic performances of the Aux/NP-TNTA heterostructure which acts as a model catalyst, including photocatalytic oxidation of organic pollutant, photocatalytic reduction of aromatic nitro compounds and photoelectrochemical (PEC) water splitting under simulated solar light irradiation, are systematically exploited. It is found that synergistic interaction stemming from monodisperse coverage of Aux clusters on NP-TNTAs in combination with hierarchical nanostructure of NP-TNTAs reinforce light absorption of Aux/NP-TNTA heterostructure especially within visible region, hence contributing to the significantly enhanced photocatalytic and PEC water splitting performances. Moreover, photocatalytic and PEC mechanisms over Aux/NP-TNTA heterostructure are elucidated and corresponding reaction models were presented. It is anticipated that this work could boost new insight for photocatalytic properties of metal-cluster-sensitized semiconductor nanocomposites.

บรรณานุกรม :
Xiao, Fang-Xing , Hung, Sung-Fu , Miao, Jianwei , Wang, Hsin-Yi , Yang, Hongbin , Liu, Bin . (2557). Metal-cluster-decorated TiO2 nanotube arrays : a composite heterostructure toward versatile photocatalytic and photoelectrochemical applications.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Xiao, Fang-Xing , Hung, Sung-Fu , Miao, Jianwei , Wang, Hsin-Yi , Yang, Hongbin , Liu, Bin . 2557. "Metal-cluster-decorated TiO2 nanotube arrays : a composite heterostructure toward versatile photocatalytic and photoelectrochemical applications".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Xiao, Fang-Xing , Hung, Sung-Fu , Miao, Jianwei , Wang, Hsin-Yi , Yang, Hongbin , Liu, Bin . "Metal-cluster-decorated TiO2 nanotube arrays : a composite heterostructure toward versatile photocatalytic and photoelectrochemical applications."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2557. Print.
Xiao, Fang-Xing , Hung, Sung-Fu , Miao, Jianwei , Wang, Hsin-Yi , Yang, Hongbin , Liu, Bin . Metal-cluster-decorated TiO2 nanotube arrays : a composite heterostructure toward versatile photocatalytic and photoelectrochemical applications. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2557.