机构:
Humboldt Univ, Inst Chem, Brook Taylor Str 2, D-12489 Berlin, Germany
Humboldt Univ, IRIS Adlershof, Brook Taylor Str 2, D-12489 Berlin, Germany
Xi An Jiao Tong Univ, IRCRE, Sch Energy & Power Engn, Xian 710049, Shaanxi, Peoples R China
Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Sch Energy & Power Engn, Xian 710049, Shaanxi, Peoples R ChinaHumboldt Univ, Inst Chem, Brook Taylor Str 2, D-12489 Berlin, Germany
机构:
Xi An Jiao Tong Univ, IRCRE, Sch Energy & Power Engn, Xian 710049, Shaanxi, Peoples R China
Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Sch Energy & Power Engn, Xian 710049, Shaanxi, Peoples R ChinaHumboldt Univ, Inst Chem, Brook Taylor Str 2, D-12489 Berlin, Germany
bimetallic nanoclusters;
energy conversion;
nanotubes;
photoelectrochemical cells;
photosensitizers;
SENSITIZED SOLAR-CELLS;
EXCITED-STATE BEHAVIOR;
TIO2 NANOTUBE ARRAYS;
SILVER NANOCLUSTERS;
RELAXATION DYNAMICS;
HYDROGEN GENERATION;
GOLD NANOPARTICLES;
METAL NANOCLUSTERS;
OPTICAL-PROPERTIES;
SITE PREFERENCE;
D O I:
10.1002/chem.201900008
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
The atomically precise bimetallic nanocluster (NC), Au24Ag28 (PhCC)(20)(SPy)(4)Cl-2 (1) (Py = pyridine), was employed for the first time as a stable photosensitizer for photoelectrochemical applications. The sensitization of TiO2 nanotube arrays (TNA) with 1 greatly enhances the light-harvesting ability of the composite because 1 shows a high molar extinction coefficient (e) in the UV/Vis region. Compared to a more standard Au-25(SG)(18)-TNA (2-TNA; SG = glutathione) composite, 1-TNA shows a much better stability under illumination in both neutral and basic conditions. The precise composition of the photosensitizers enables a direct comparison of the sensitization ability between 1 and 2. With the same cluster loading, the photocurrent produced by 1-TNA is 15 times larger than that of 2-TNA. The superior performance of 1-TNA over 2-TNA is attributed not only to the higher light absorption ability of 1 but also to the higher charge-separation efficiency. Besides, a ligand effect on the stability of the photoelectrode and charge-transfer between the NCs and the semiconductor is revealed. This work paves the way to study the role of metal nanoclusters as photosensitizers at the atomic level, which is essential for the design of better material for light energy conversion.
机构:
KAUST, Div Phys Sci & Engn, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi ArabiaKAUST, Div Phys Sci & Engn, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi Arabia
Aly, Shawkat M.
;
AbdulHalim, Lina G.
论文数: 0引用数: 0
h-index: 0
机构:
KAUST, Div Phys Sci & Engn, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi ArabiaKAUST, Div Phys Sci & Engn, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi Arabia
AbdulHalim, Lina G.
;
Besong, Tabot M. D.
论文数: 0引用数: 0
h-index: 0
机构:
KAUST, Div Phys Sci & Engn, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi ArabiaKAUST, Div Phys Sci & Engn, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi Arabia
Besong, Tabot M. D.
;
Soldan, Giada
论文数: 0引用数: 0
h-index: 0
机构:
KAUST, Div Phys Sci & Engn, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi ArabiaKAUST, Div Phys Sci & Engn, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi Arabia
Soldan, Giada
;
Bakr, Osman M.
论文数: 0引用数: 0
h-index: 0
机构:
KAUST, Div Phys Sci & Engn, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi ArabiaKAUST, Div Phys Sci & Engn, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi Arabia
Bakr, Osman M.
;
Mohammed, Omar F.
论文数: 0引用数: 0
h-index: 0
机构:
KAUST, Div Phys Sci & Engn, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi ArabiaKAUST, Div Phys Sci & Engn, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi Arabia
机构:
PSL Res Univ, Chim ParisTech, CNRS, IRCP, F-75005 Paris, FrancePSL Res Univ, Chim ParisTech, CNRS, IRCP, F-75005 Paris, France
Azarias, Cloe
;
论文数: 引用数:
h-index:
机构:
Adamo, Carlo
;
Perrier, Aurelie
论文数: 0引用数: 0
h-index: 0
机构:
PSL Res Univ, Chim ParisTech, CNRS, IRCP, F-75005 Paris, France
Univ Paris Diderot, Sorbonne Paris Cite, 5 Rue Thomas Mann, F-75205 Paris 13, FrancePSL Res Univ, Chim ParisTech, CNRS, IRCP, F-75005 Paris, France
机构:
Philipps Univ Marburg, Dept Phys, D-35037 Marburg, GermanyIndian Inst Technol Madras, DST Unit Nanosci DST UNS, Madras 600036, Tamil Nadu, India
Chakraborty, Indranath
;
Pradeep, Thalappil
论文数: 0引用数: 0
h-index: 0
机构:
Indian Inst Technol Madras, DST Unit Nanosci DST UNS, Madras 600036, Tamil Nadu, IndiaIndian Inst Technol Madras, DST Unit Nanosci DST UNS, Madras 600036, Tamil Nadu, India
机构:
KAUST, Div Phys Sci & Engn, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi ArabiaKAUST, Div Phys Sci & Engn, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi Arabia
Aly, Shawkat M.
;
AbdulHalim, Lina G.
论文数: 0引用数: 0
h-index: 0
机构:
KAUST, Div Phys Sci & Engn, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi ArabiaKAUST, Div Phys Sci & Engn, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi Arabia
AbdulHalim, Lina G.
;
Besong, Tabot M. D.
论文数: 0引用数: 0
h-index: 0
机构:
KAUST, Div Phys Sci & Engn, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi ArabiaKAUST, Div Phys Sci & Engn, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi Arabia
Besong, Tabot M. D.
;
Soldan, Giada
论文数: 0引用数: 0
h-index: 0
机构:
KAUST, Div Phys Sci & Engn, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi ArabiaKAUST, Div Phys Sci & Engn, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi Arabia
Soldan, Giada
;
Bakr, Osman M.
论文数: 0引用数: 0
h-index: 0
机构:
KAUST, Div Phys Sci & Engn, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi ArabiaKAUST, Div Phys Sci & Engn, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi Arabia
Bakr, Osman M.
;
Mohammed, Omar F.
论文数: 0引用数: 0
h-index: 0
机构:
KAUST, Div Phys Sci & Engn, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi ArabiaKAUST, Div Phys Sci & Engn, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi Arabia
机构:
PSL Res Univ, Chim ParisTech, CNRS, IRCP, F-75005 Paris, FrancePSL Res Univ, Chim ParisTech, CNRS, IRCP, F-75005 Paris, France
Azarias, Cloe
;
论文数: 引用数:
h-index:
机构:
Adamo, Carlo
;
Perrier, Aurelie
论文数: 0引用数: 0
h-index: 0
机构:
PSL Res Univ, Chim ParisTech, CNRS, IRCP, F-75005 Paris, France
Univ Paris Diderot, Sorbonne Paris Cite, 5 Rue Thomas Mann, F-75205 Paris 13, FrancePSL Res Univ, Chim ParisTech, CNRS, IRCP, F-75005 Paris, France
机构:
Philipps Univ Marburg, Dept Phys, D-35037 Marburg, GermanyIndian Inst Technol Madras, DST Unit Nanosci DST UNS, Madras 600036, Tamil Nadu, India
Chakraborty, Indranath
;
Pradeep, Thalappil
论文数: 0引用数: 0
h-index: 0
机构:
Indian Inst Technol Madras, DST Unit Nanosci DST UNS, Madras 600036, Tamil Nadu, IndiaIndian Inst Technol Madras, DST Unit Nanosci DST UNS, Madras 600036, Tamil Nadu, India