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A novel strategy for surface treatment on hematite photoanode for efficient water oxidation

หน่วยงาน Nanyang Technological University, Singapore

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ชื่อเรื่อง : A novel strategy for surface treatment on hematite photoanode for efficient water oxidation
นักวิจัย : Xi, Lifei , Chiam, Sing Yang , Mak, Wai Fatt , Tran, Phong D. , Barber, James , Loo, Say Chye Joachim , Wong, Lydia Helena
คำค้น : DRNTU::Engineering::Materials
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2556
อ้างอิง : Xi, L., Chiam, S. Y., Mak, W. F., Tran, P. D., Barber, J., & Loo, S. C. J., et al. (2013). A novel strategy for surface treatment on hematite photoanode for efficient water oxidation. Chemical science, 4(1), 164-169. , http://hdl.handle.net/10220/17714 , http://dx.doi.org/10.1039/c2sc20881d
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Chemical science
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

In this paper, we report a novel strategy for surface treatment of hematite nanorods for efficient photo-driven water oxidation. This is the first report describing the growth of Sn treated hematite from α-FeOOH nanorod arrays in one step without substantially altering morphologies. With this treatment the photocurrent density increased from 1.24 for pristine hematite nanorods to 2.25 mA cm−2 at 1.23 V vs. RHE (i.e. 81% improvement). The increase in photocurrent density was also accompanied by improved incident-photon-to-current efficiencies and oxygen evolution. The photocurrent improvement is mainly attributed to a reduced electron–hole recombination at the hematite–electrolyte interface through the formation of FexSn1−xO4 layer at the hematite nanorod surface as shown by XPS, HRTEM, EDAX line scan analyses and PEC measurements.

บรรณานุกรม :
Xi, Lifei , Chiam, Sing Yang , Mak, Wai Fatt , Tran, Phong D. , Barber, James , Loo, Say Chye Joachim , Wong, Lydia Helena . (2556). A novel strategy for surface treatment on hematite photoanode for efficient water oxidation.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Xi, Lifei , Chiam, Sing Yang , Mak, Wai Fatt , Tran, Phong D. , Barber, James , Loo, Say Chye Joachim , Wong, Lydia Helena . 2556. "A novel strategy for surface treatment on hematite photoanode for efficient water oxidation".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Xi, Lifei , Chiam, Sing Yang , Mak, Wai Fatt , Tran, Phong D. , Barber, James , Loo, Say Chye Joachim , Wong, Lydia Helena . "A novel strategy for surface treatment on hematite photoanode for efficient water oxidation."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2556. Print.
Xi, Lifei , Chiam, Sing Yang , Mak, Wai Fatt , Tran, Phong D. , Barber, James , Loo, Say Chye Joachim , Wong, Lydia Helena . A novel strategy for surface treatment on hematite photoanode for efficient water oxidation. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2556.