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Zuo F, Williams ST, Liang PW, Chueh CC, Liao CY, Jen AKY. Binary-metal perovskites toward high-performance planar-heterojunction hybrid solar cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:6454-6460. [PMID: 25123496 DOI: 10.1002/adma.201401641] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Revised: 05/30/2014] [Indexed: 06/03/2023]
Abstract
A simple, low temperature solution process for Pb/Sn binary-metal perovskite planar-heterojunction solar cells is demonstrated. Sn inclusion substantially influences the band-gap, crystallization kinetics, and thin-film formation leading to a broadened light absorption and enhanced film coverage on ITO/PEDOT:PSS. As a result, the optimized device shows a PCE exceeding 10%, which is the best result for binary-metal perovskite solar cells so far.
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Hou Y, Zuo F, Dagg AP, Liu J, Feng P. Branched WO3 nanosheet array with layered C3 N4 heterojunctions and CoOx nanoparticles as a flexible photoanode for efficient photoelectrochemical water oxidation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:5043-9. [PMID: 24848321 DOI: 10.1002/adma.201401032] [Citation(s) in RCA: 166] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 03/31/2014] [Indexed: 05/08/2023]
Abstract
A hybrid WO3 /C3 N4 /CoOx system exhibits excellent photoelectrochemical activity for water oxidation. The system comprises a novel three-dimensionally branched WO3 nanosheet array coated with a layer of C3 N4 heterojunctions that are further decorated with CoOx nanoparticles. The photoelectrochemical activity arises from the effective light harvesting due to the 3D structure and "window effect," the excellent charge separation and transport in the heterojunction, and the fast interfacial charge collection and surface reactions due to the large surface area.
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Mao C, Zuo F, Hou Y, Bu X, Feng P. In Situ Preparation of a Ti3+Self-Doped TiO2Film with Enhanced Activity as Photoanode by N2H4Reduction. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201406017] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Mao C, Zuo F, Hou Y, Bu X, Feng P. In Situ Preparation of a Ti3+Self-Doped TiO2Film with Enhanced Activity as Photoanode by N2H4Reduction. Angew Chem Int Ed Engl 2014; 53:10485-9. [DOI: 10.1002/anie.201406017] [Citation(s) in RCA: 189] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2014] [Indexed: 11/09/2022]
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Liang PW, Liao CY, Chueh CC, Zuo F, Williams ST, Xin XK, Lin J, Jen AKY. Additive enhanced crystallization of solution-processed perovskite for highly efficient planar-heterojunction solar cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:3748-54. [PMID: 24634141 DOI: 10.1002/adma.201400231] [Citation(s) in RCA: 477] [Impact Index Per Article: 47.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Revised: 02/08/2014] [Indexed: 05/19/2023]
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Delle Sedie A, Riente L, Bandinelli F, Bi Y, Xu Q, Cao Y, Yuan Y, Zuo F, Gao Y, Matucci Cerinic M, Bombardieri S, Xiao C. AB0679 Comparison of Two Different Ethnic Groups of as Patients: Table 1. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.3657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Mao C, Kudla RA, Zuo F, Zhao X, Mueller LJ, Bu X, Feng P. Anion Stripping as a General Method to Create Cationic Porous Framework with Mobile Anions. J Am Chem Soc 2014; 136:7579-82. [DOI: 10.1021/ja5030723] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Chen H, Duan J, Zuo F. Mechanism of the reversal effect of mifepristone on drug resistance of the human cervical cancer cell line HeLa/MMC. GENETICS AND MOLECULAR RESEARCH 2014; 13:1288-95. [PMID: 24634186 DOI: 10.4238/2014.february.27.14] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We examined the ability of mifepristone to reverse the in vitro drug resistance of human cervical cancer cells resistant to mitomycin-C (HeLa/MMC) cells and investigated the mechanism of this effect. A 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay was performed to detect the drug resistance of HeLa/MMC cells and the reversed drug resistance in vitro. Expression levels of B-cell lymphoma 2 (Bcl-2), Bcl-2-associated X protein (Bax), and glucosylceramide synthase (GCS) were measured in HeLa and HeLa/MMC cells. The resistance index of HeLa/MMC cells on MMC was reduced from 5.02 to 1.46 after 10 mg/mL mifepristone exposure. A combination of mifepristone upregulated the Bax/Bcl-2 protein expression ratio and apoptosis in HeLa/MMC cells. GCS expression was significantly higher in HeLa/MMC cells than in HeLa cells (P < 0.01), but distinctly declined in both cell lines after mifepristone application (P < 0.01). Mifepristone reversed the resistance of HeLa/MMC cells to MMC in vitro; the overexpression of the GCS gene and the increased expression of apoptosis-related protein Bcl-2 may play important roles in the formation of multidrug resistance in cervical cancer.
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Colangelo P, Giannuzzi F, Nicotri S, Zuo F. Temperature and chemical potential dependence of the gluon condensate: A holographic study. Int J Clin Exp Med 2013. [DOI: 10.1103/physrevd.88.115011] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Morrison RJ, Zhang J, Urban ER, Hall J, Ittekkot V, Avril B, Hu L, Hong GH, Kidwai S, Lange CB, Lobanov V, Machiwa J, San Diego-McGlone ML, Oguz T, Plumley FG, Yeemin T, Zhu W, Zuo F. Developing human capital for successful implementation of international marine scientific research projects. MARINE POLLUTION BULLETIN 2013; 77:11-22. [PMID: 24055460 DOI: 10.1016/j.marpolbul.2013.09.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Accepted: 09/01/2013] [Indexed: 06/02/2023]
Abstract
The oceans play a crucial role in the global environment and the sustainability of human populations, because of their involvement in climate regulation and provision of living and non-living resources to humans. Maintenance of healthy oceans in an era of increasing human pressure requires a high-level understanding of the processes occurring in the marine environment and the impacts of anthropogenic activities. Effective protection and sustainable resource management must be based, in part, on knowledge derived from successful research. Current marine research activities are being limited by a need for high-quality researchers capable of addressing critical issues in broad multidisciplinary research activities. This is particularly true for developing countries which will require the building of capacity for marine scientific research. This paper reviews the current activities aimed at increasing marine research capacity in developing and emerging countries and analyses the challenges faced, including: appropriate alignment of the research goals and societal and policy-relevant needs; training in multidisciplinary research; increasing capacity for overall synthesis of scientific data; building the capacity of technical staff; keeping highly qualified personnel in marine scientific research roles; cross-cultural issues in training; minimising duplication in training activities; improving linkages among human capital, project resources and infrastructure. Potential solutions to these challenges are provided, along with some priorities for action aimed at improving the overall research effort.
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Wang L, Wu T, Bu X, Zhao X, Zuo F, Feng P. Coassembly between the Largest and Smallest Metal Chalcogenide Supertetrahedral Clusters. Inorg Chem 2013; 52:2259-61. [DOI: 10.1021/ic301965w] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Liu J, Wen S, Hou Y, Zuo F, Beran GJO, Feng P. Boron Carbides as Efficient, Metal-Free, Visible-Light-Responsive Photocatalysts. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209363] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Liu J, Wen S, Hou Y, Zuo F, Beran GJO, Feng P. Boron carbides as efficient, metal-free, visible-light-responsive photocatalysts. Angew Chem Int Ed Engl 2013; 52:3241-5. [PMID: 23355478 DOI: 10.1002/anie.201209363] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Indexed: 11/07/2022]
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Zou X, Liu J, Su J, Zuo F, Chen J, Feng P. Facile synthesis of thermal- and photostable titania with paramagnetic oxygen vacancies for visible-light photocatalysis. Chemistry 2013; 19:2866-73. [PMID: 23307339 DOI: 10.1002/chem.201202833] [Citation(s) in RCA: 125] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Revised: 11/07/2012] [Indexed: 11/05/2022]
Abstract
A novel dopant-free TiO(2) photocatalyst (V(o)(.)-TiO(2)), which is self-modified by a large number of paramagnetic (single-electron-trapped) oxygen vacancies, was prepared by calcining a mixture of a porous amorphous TiO(2) precursor, imidazole, and hydrochloric acid at elevated temperature (450 °C) in air. Control experiments demonstrate that the porous TiO(2) precursor, imidazole, and hydrochloric acid are all necessary for the formation of V(o)(.)-TiO(2). Although the synthesis of V(o)(.)-TiO(2) originates from such a multicomponent system, this synthetic approach is facile, controllable, and reproducible. X-ray diffraction, XPS, and EPR spectroscopy reveal that the V(o)(.)-TiO(2) material with a high crystallinity embodies a mass of paramagnetic oxygen vacancies, and is free of other dopant species such as nitrogen and carbon. UV/Vis diffuse-reflectance spectroscopy and photoelectrochemical measurement demonstrate that V(o)(.)-TiO(2) is a stable visible-light-responsive material with photogenerated charge separation efficiency higher than N-TiO(2) and P25 under visible-light irradiation. The V(o)(.)-TiO(2) material exhibits not only satisfactory thermal- and photostability, but also superior photocatalytic activity for H(2) evolution (115 μmol h(-1) g(-1)) from water with methanol as sacrificial reagent under visible light (λ>400 nm) irradiation. Furthermore, the effects of reaction temperature, ratio of starting materials (imidazole:TiO(2) precursor) and calcination time on the photocatalytic activity and the microstructure of V(o)(.)-TiO(2) were elucidated.
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Hou Y, Zuo F, Dagg A, Feng P. Visible light-driven α-Fe₂O₃ nanorod/graphene/BiV₁-xMoxO₄ core/shell heterojunction array for efficient photoelectrochemical water splitting. NANO LETTERS 2012; 12:6464-73. [PMID: 23151150 DOI: 10.1021/nl303961c] [Citation(s) in RCA: 156] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
We report the design, synthesis, and characterization of a novel heterojunction array of α-Fe(2)O(3)/graphene/BiV(1-x)Mo(x)O(4) core/shell nanorod for photoelectrochemical water splitting. The heterojunction array was prepared by hydrothermal deposition of α-Fe(2)O(3) nanorods onto Ti substrate, with subsequent coating of graphene interlayer and BiV(1-x)Mo(x)O(4) shell by photocatalytic reduction and a spin-coating approach, respectively. The heterojunction yielded a pronounced photocurrent density of ∼1.97 mA/cm(2) at 1.0 V vs Ag/AgCl and a high photoconversion efficiency of ∼0.53% at -0.04 V vs Ag/AgCl under the irradiation of a Xe lamp. The improved photoelectrochemical properties benefited from (1) the enhanced light absorption due to behavior of the "window effect" between the α-Fe(2)O(3) cores and BiV(1-x)Mo(x)O(4) shells, and (2) the improved separation of photogenerated carriers at the α-Fe(2)O(3) nanorod/graphene/BiV(1-x)Mo(x)O(4) interfaces. Our results demonstrate the advantages of the novel graphene-mediated core/shell heterojunction array and provide a valuable insight for the further development of such materials.
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Hou Y, Zuo F, Dagg A, Feng P. A Three-Dimensional Branched Cobalt-Doped α-Fe2O3Nanorod/MgFe2O4Heterojunction Array as a Flexible Photoanode for Efficient Photoelectrochemical Water Oxidation. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201207578] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Hou Y, Zuo F, Dagg A, Feng P. A Three-Dimensional Branched Cobalt-Doped α-Fe2O3Nanorod/MgFe2O4Heterojunction Array as a Flexible Photoanode for Efficient Photoelectrochemical Water Oxidation. Angew Chem Int Ed Engl 2012; 52:1248-52. [DOI: 10.1002/anie.201207578] [Citation(s) in RCA: 222] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Indexed: 11/06/2022]
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Zuo F, Bozhilov K, Dillon RJ, Wang L, Smith P, Zhao X, Bardeen C, Feng P. Active facets on titanium(III)-doped TiO2: an effective strategy to improve the visible-light photocatalytic activity. Angew Chem Int Ed Engl 2012; 51:6223-6. [PMID: 22566101 DOI: 10.1002/anie.201202191] [Citation(s) in RCA: 319] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Indexed: 11/12/2022]
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Zuo F, Bozhilov K, Dillon RJ, Wang L, Smith P, Zhao X, Bardeen C, Feng P. Active Facets on Titanium(III)-Doped TiO2: An Effective Strategy to Improve the Visible-Light Photocatalytic Activity. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201202191] [Citation(s) in RCA: 123] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Zheng ST, Wu T, Zuo F, Chou C, Feng P, Bu X. Mimicking Zeolite to Its Core: Porous Sodalite Cages as Hangers for Pendant Trimeric M3(OH) Clusters (M = Mg, Mn, Co, Ni, Cd). J Am Chem Soc 2012; 134:1934-7. [DOI: 10.1021/ja209800x] [Citation(s) in RCA: 122] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Wu T, Zuo F, Wang L, Bu X, Zheng ST, Ma R, Feng P. A Large Indium Sulfide Supertetrahedral Cluster Built from Integration of ZnS-like Tetrahedral Shell with NaCl-like Octahedral Core. J Am Chem Soc 2011; 133:15886-9. [DOI: 10.1021/ja2066994] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Zheng ST, Wu T, Irfanoglu B, Zuo F, Feng P, Bu X. Multicomponent Self-Assembly of a Nested Co24@Co48 Metal-Organic Polyhedral Framework. Angew Chem Int Ed Engl 2011; 50:8034-7. [DOI: 10.1002/anie.201103155] [Citation(s) in RCA: 101] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2011] [Indexed: 11/09/2022]
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48
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Zheng ST, Wu T, Irfanoglu B, Zuo F, Feng P, Bu X. Multicomponent Self-Assembly of a Nested Co24@Co48 Metal-Organic Polyhedral Framework. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201103155] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Zhang Z, Lin Q, Kurunthu D, Wu T, Zuo F, Zheng ST, Bardeen CJ, Bu X, Feng P. Synthesis and Photocatalytic Properties of a New Heteropolyoxoniobate Compound: K10[Nb2O2(H2O)2][SiNb12O40]·12H2O. J Am Chem Soc 2011; 133:6934-7. [DOI: 10.1021/ja201670x] [Citation(s) in RCA: 156] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Zheng ST, Zuo F, Wu T, Irfanoglu B, Chou C, Nieto RA, Feng P, Bu X. Cooperative assembly of three-ring-based zeolite-type metal-organic frameworks and Johnson-type dodecahedra. Angew Chem Int Ed Engl 2011; 50:1849-52. [PMID: 21328654 PMCID: PMC4410848 DOI: 10.1002/anie.201006882] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Indexed: 11/05/2022]
Abstract
Two birds with one stone One synthetic strategy led to the preparation of both 3-ring-based zeolite-type metal-organic frameworks (NPO-type) and Johnson-type metal-organic polyhedra. The strategy is based on the cooperative assembly of 4-connected indium nodes with two symmetry-complementary ligands (one serves to generate 3-rings and the other crosslinks 3-rings). Photocatalytic H2 production experiments demonstrated these NPO-zeolite compounds behave as semiconductors and exhibit photocatalytic activity for the generation of dihydrogen from water under ultraviolet irradiation.
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