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催化学报 2012年第9期33卷 1532-1541页

作者： Sachin u.NANDANWAR mousumi CHAKRABORTY Department of Chemical Engineering S.V.National Institute of Technology

Monodispersed colloidal copper oxide nanoparticles were synthesized by water-in-oil microemulsion using CuCl 2·H2O and *** effect on CuO particle size was studied by varying the water-to-surfactant molar ratio,precursor concentration and molar ratio of NaOH to *** morphology,size and size distribution of the particles were studied by transmission electron microscopy and dynamic light *** destabilization of the colloidal copper oxide nanoparticles was detected by a Turbiscan ***/γ-Al2O3 catalysts were prepared by dispersing highly stable CuO nanoparticles on γ-alumina by mechanical *** catalysts were analyzed by scanning electron microscopy,transmission electron microscopy,X-ray photoelectron,and X-ray diffraction,which confirmed the uniform dispersion of CuO on the *** reduction of the nitro aromatic compounds,4-nitrophenol,3-nitrophenol,and 2-nitrophenol,were *** CuO/γ-Al2O3 catalysts were active for the reduction of these nitro aromatic compounds.

关键词： microemulsion copper oxide alumina nanocatalyst catalytic reduction nitro aromatic compound

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Dimethylammonium iodide stabilized bismuth halide perovskite photocatalyst for hydrogen evolution

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Nano Research 2021年第4期14卷 1116-1125页

作者： He Zhao Kalyani Chordiya Petri Leukkunen Alexey Popov mousumi upadhyay Kahaly Krisztian Kordas Satu Ojala Environmental and Chemical Engineering Research unit University of OuluP.O.Box 4300FI-90014 OuluFinland ELI-ALPS ELI-HU Non-Profit Ltd.Dugonicster 136720 SzegedHungary Institute of Physics University of Szegedf D6m ter 9H-6720 Szeged Hungary Nano and Molecular Systems Research unit University of OuluP.O.Box 3000FI-90014 OuluFinland Optoelectronics and Measurement Techniques unit University of OuluFI-90570 OuluFinland Microelectronics Research unit University of OuluP.O.Box 4500FI-90014 OuluFinland VTT Technical Research Centre of Finland FI-90590 OuluFinland

Metal halide perovskites have emerged as novel and promising photocatalysts for hydrogen ***,their stability in water is a vital and urgent research *** this paper a novel approach to stabilize a bismuth halide perovskite[(CH_(3))_(2)NH_(2)]_(3)[Bil_(6)](DA_(3)Bil_(6))in water using dimethylammonium iodide(DAI)without the assistance of acids or coatings is *** DA3Bil6 powder exhibits good stability in DAI solutions for at least two *** concentration of DAI is found as a critical parameter,where the I^(-)ions play the key role in the *** stability of DA3Bil6 in water is realized via a surface dissolution-recrystallization *** DA3Bil6 demonstrates constant photocatalytic properties for visible light-induced photo-oxidation of I^(-)ions and with PtCI4 as a co-catalyst(Pt-DA_(3)Bil_(6)),photocatalytic H2 evolution with a rate of 5.7μmol·h^(-1)from HI in DAI solution,obtaining an apparent quantum efficiency of 0.83%at 535 *** study provides new insights on the stabilization of metal halide perovskites for photocatalysis in aqueous solution.

关键词： bismuth halide perovskite dimethylammonium iodide photocatalysis hydrogen evolution

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