邹志刚
长期从事材料物理化学和光催化的研究。
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- 姓名:邹志刚
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学术头衔:
博士生导师
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学科领域:
数理科学
- 研究兴趣:长期从事材料物理化学和光催化的研究。
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19
【期刊论文】Enhanced photoelectrolysis of water with photoanode Nb: Sr Ti O3
邹志刚, Jiang Yin and Jinhua Yea), Zhigang Zou
Appl. Phys. Lett., Vol.85, No.4, 26 July 2004,-0001,():
-1年11月30日
The photoelectrolysis of water has been investigated in a photoelectrochemical cell with the single-crystal photoanodes Nb: Sr Ti O3 (0mol%, 0.07mol%, and 0.69mol%) and the electrolyte Na2SO4s0.1M, pH=5.92d. The Nb: Sr Ti O3 anodes (0.07 mol% and 0.69 mol%) show much higher photocurrent density than the pure Sr Ti O3 anode in several orders of magnitude. The incident photon to current conversion efficiencies at 298.2 nm and an applied potential 1.5V (versus the saturated calomel electrode) for three Nb: Sr Ti O3 (0mol%, 0.07mol%, and 0.69mol%) anodes are 0.92%, 15.67%, and 4.32%, respectively. The transmittance spectra of the Nb: Sr Ti O3 show an obvious optical absorption around 516 nm (~2.4eVd). It is interpreted that two-photon process takes part in the charge transfer from the valence band to the conduction band through the intermediate states induced by Nb doping.
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邹志刚, Junwang Tang, Zhigang Zou, and Jinhua Ye*
Angew. Chem. Int. Ed. 2004, 43, 4463-4466,-0001,():
-1年11月30日
dyes/, pigments
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邹志刚, Zhigang Zou, Hironori Arakawa*
Z. Zou, H. Arakawa/Journal of Photochemistry and Photobiology A: Chemistry 158(2003)145-162,-0001,():
-1年11月30日
The research on a new series of solid photocatalysts with different crystal structures was reviewed. The first system is A2B2O7 pyrochlore-crystal type: Bi2 MNb O7 (M=Al, Ga, In and Y, rare earth, and Fe), which is cubic system and space group Fd3m. The second system is ABO4 stibotantalite-crystal type: BiMO4 (M =Nb5+, Ta5+), in which both the triclinic system with space group P1 in the case of M=Ta and the orthorhombic system with space group Pnna in the case of M=Nb. The third system is ABO4 wolframite-crystal type: InMO4 (M=Nb5+, Ta5+), which is monoclinic system and space group P2/a. Although these photocatalysts crystallize in the different crystal structure, they contain the same octahedral TaO6 and/or NbO6 in the different photocatalysts. The band structure of the photocatalysts is defined by Ta/Nb d-level for a conduction band and O2p-level for a valence band. The band gaps of the photocatalysts were estimated to be between 2.7 and 2.4eV. Metal doped InTaO4 photocatalysts were also investigated. Under visible light (λ>420nm) or ultra-violet irradiation, the H2 and/or O2 evolutions were observed from pure water as well as aqueous CH3OH/H2O and AgNO3 solutions. The photocatalytic activity increases significantly by loading co-catalysts such as Pt, RuO2 and NiOx on the surface of the photocatalysts. Finally, direct water splitting into H2 and O2 under visible light irradiation was firstly established using newly synthesized NiOx (partly oxidized nickel) promoted In0.9 Ni0.1TaO4 photocatalyst.
Photocatalyst, Visible light irradiation, Water splitting
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【期刊论文】Photophysical and Photocatalytic Properties of AgInW2O8
邹志刚, Junwang Tang, *, † Zhigang Zou, ‡ and Jinhua Ye*, †, §
,-0001,():
-1年11月30日
A photocatalyst, Ag In W2O8, with a layered structure was synthesized. The physical and photophysical properties of the photocatalyst were characterized by XRD, BET measurement, UV-visible diffuse reflectance, and photoluminescence, respectively. The photocatalytic properties of the photocatalyst for H2 evolution with Pt cocatalyst from CH3OH/H2O solution and O2 evolution from Ag NO3 solution were observed under UV and visible light irradiation. The Ag In W2O8 photocatalyst presented not only the activity of O2 evolution but also the activity of H2 evolution. Also the photocatalyst showed the ability to evolve H2 from pure water under full arc irradiation. On the basis of all the results, the band structure of the photocatalyst was discussed.
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邹志刚, Zhigang Zou, *, † Jinhua Ye, ‡ and Hironori Arakawa*, †
J. Phys. Chem. B 2002, 106, 13098-13101,-0001,():
-1年11月30日
The highly crystalline nanoparticles of In0.9Ni0.1TaO4, with a wolframite-type structure, were prepared by a solid-state reaction method. The band gap Eg of In0.9 Ni0.1 TaO4 is about 2.3eV, and particles with sizes in the range of 300-500 nm were observed by TEM measurements. We loaded 1.0 wt % partially oxidized nickel as electron-trapping and hydrogen-evolution sites onto the In0.9 Ni0.1 TaO4 surface from an aqueous Ni (NO3) 2 solution. The TEM measurements show that nearly spherical nano NiOx particles with a size of about 15nm are distributed on the surface of In0.9Ni0.1TaO4. Stoichiometric amounts of oxygen and hydrogen were evolved under visible-light irradiation using NiOx/In0.9 Ni0.1 TaO4 with a quantum yield of about 0.66%. This system behaves as a short-circuited microphotoelectrochemical cell. The surface of NiOx is the cathode, and the surface of In0.9 Ni0.1 TaO4 is the anode.
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邹志刚, Zhingang Zou a) and Hironori Arakawa, Jinhua Ye
J. Mater. Res, Vol. 17, No. 6 Jun 2002,-0001,():
-1年11月30日
Substitution effects of Ta5+ by Nb5+ in BiTa1-x Nbx O4 (0≤x≤1.0) on photocatalytic, photophysical,and structural properties were in investigatd. The powder x-ray diffrction and Rietveld structural refinement showed that the structure of BiTa1-x Nbx O4 at R=at R=0.2, 0.8, and 1.0 is an orthorhombic system with space goup pnna. Ultraviolet-visble diffuse reflectance spectroscopy measuremetnt revealed that the band agp of orthorhombic samples is narrower than that of triclnic compounds. The H2 Bi Ta1-xNbxO4 under ultraviolet irradiation. The orthorhombic compound at R=0.2 showed the highest activity. which is higher than that of the well-known TiO3 photocatalyst.
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邹志刚, Zhigang Zou, *, † Jinhua Ye, ‡ and Hironori Arakawa*, †
VOLUME 106, NUMBER 3, JANUARY 24, 2002,-0001,():
-1年11月30日
We prepared a new series of rare earth photocatalysts, Bi2RNbO7 (R = Y, rare earth), and found that the variation of R ion radius rR 3+ in Bi2RNbO7 led to a change in the band structure and the activity of photocatalytic decomposition of water. The band gap Eg increases with increasing rR 3+, while the photocatalytic activity AR 3+ decreases with increasing rR 3+. The analysis of the E(rR 3+) dependency showed that the position of the 4f band of the R ion in Bi2RNbO7 determines the band gap Eg, resulting in the difference in photocatalytic activity.
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邹志刚, Zhigang Zou*, Jinhua Ye†, Kazuhiro Sayama*, & Hironori Arakawa *
NATURE VOL 414 6 DECEMBER 2001,-0001,():
-1年11月30日
The photocatalytic splitting of water into hydrogen and oxygen using solar energy is a potentially clean and renewable source for hydrogen fuel. The
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邹志刚, Zhigang Zou a, Jinhua Ye b, Kazuhiro Sayama a, Hironori Arakawa a, *
Chemical Physics Letters 343(2001)303-308,-0001,():
-1年11月30日
BiTa1 xN bx O4 (0≤x≤1) solid photocatalysts were prepared by solid-state reaction and characterized by powder X-aydiffractionand Rietvel dstruc turerefin ement.Thestru cture of Bi Ta1-xNbxO4 (x=0.0 and 0.5) istriclinic. However, the structures of x=0.2, 0.8 and 1.0 are or thor hombic. The H2 evolution was obtained from an aqueous CH3OH/H2O solution and from pure H20 with Bi Ta1-xNbxO4 (0≤x≤1) under UV irradiation. The orthorhombic photocatalysts exhibit much higher activity than that of triclinic photocatalysts. The orthorhombic photocatalyst at x=0.2 showed the highest activity. An UV vis diffuse reflectance spectroscopy measurement revealed that the band gap of orthorhombic photocatalysts is more narrow than that of triclinic photocatalysts.
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邹志刚, Zhigang Zou, *, † Jinhua Ye, ‡ and Hironori Arakawa †
Chem. Mater. 2001, 13, 1765-1769,-0001,():
-1年11月30日
A new series of photocatalysts, Bi2MNbO7 (M=Al3+, Ga3+, In3+), were synthesized by solid-state reaction and characterized by powder X-ray diffraction and Rietveld structure refinement. The substitution effect of In3+ by Al3+ and Ga3+ on the photocatalytic and structural properties of the Bi2InNbO7 photocatalyst was investigated. These photocatalysts crystallize in the same pyrochlore structure, but the lattice parameters decrease with decreasing M3+ (M3+=Al3+, Ga3+, In3+) ionic radii. The rates of H2 and O2 evolution from an aqueous methanol and cerium sulfate solution significantly increases with decreasing M3+ ionic radii under UV irradiation. The Bi2AlNbO7 photocatalyst exhibits much higher photocatalytic activity than the well-known TiO2 photocatalyst.
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