Synthesis and Structural Characterization of Nano-sized Copper Tungstate Particles
Apstrakt
The nano-sized copper tungstate (CuWO4) was prepared by precipitation method in the presence of non-ionic copolymer surfactant (polyoxyethylene-polyoxypropylene block copolymer) and consequent annealing at low temperature (400 degrees C). The scanning electron microscopy (SEM) indicated formation of spherical CuWO4 particles in the size range from 10 to 90 nm. The thermogravimetric analysis was used to study dehydration processes. The X-ray diffraction analysis undoubtedly confirmed formation of triclinic CuWO4 and the refinement of the diffraction data showed that CuWO4 powder belongs to the distorted tungstate type of structure with space group P (1) over bar. The structure of the CuWO4 can be described as infinite zigzag chains formed by edge-sharing alternating [W-O-6] and [Cu-O-6] octahedra. Indirect and direct band-gap energies of CuWO4 (2.3 and 3.5 eV, respectively) were determined using optical measurements.
Ključne reči:
Copper tungstate / rietveld refinement / optical properties / block copolymerIzvor:
Acta Chimica Slovenica, 2012, 59, 1, 70-74Finansiranje / projekti:
- Materijali redukovane dimenzionalnosti za efikasnu apsorpciju svetlosti i konverziju energije (RS-45020)
- Uticaj veličine, oblika i strukture nanočestica na njihova svojstva i svojstva nanokompozita (RS-172056)
- Funkcionalni, funkcionalizovani i usavršeni nano materijali (RS-45005)
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Jovanović, Dragana J. AU - Validžić, Ivana Lj. AU - Mitrić, Miodrag AU - Nedeljković, Jovan PY - 2012 UR - https://vinar.vin.bg.ac.rs/handle/123456789/4768 AB - The nano-sized copper tungstate (CuWO4) was prepared by precipitation method in the presence of non-ionic copolymer surfactant (polyoxyethylene-polyoxypropylene block copolymer) and consequent annealing at low temperature (400 degrees C). The scanning electron microscopy (SEM) indicated formation of spherical CuWO4 particles in the size range from 10 to 90 nm. The thermogravimetric analysis was used to study dehydration processes. The X-ray diffraction analysis undoubtedly confirmed formation of triclinic CuWO4 and the refinement of the diffraction data showed that CuWO4 powder belongs to the distorted tungstate type of structure with space group P (1) over bar. The structure of the CuWO4 can be described as infinite zigzag chains formed by edge-sharing alternating [W-O-6] and [Cu-O-6] octahedra. Indirect and direct band-gap energies of CuWO4 (2.3 and 3.5 eV, respectively) were determined using optical measurements. T2 - Acta Chimica Slovenica T1 - Synthesis and Structural Characterization of Nano-sized Copper Tungstate Particles VL - 59 IS - 1 SP - 70 EP - 74 UR - https://hdl.handle.net/21.15107/rcub_vinar_4768 ER -
@article{ author = "Jovanović, Dragana J. and Validžić, Ivana Lj. and Mitrić, Miodrag and Nedeljković, Jovan", year = "2012", abstract = "The nano-sized copper tungstate (CuWO4) was prepared by precipitation method in the presence of non-ionic copolymer surfactant (polyoxyethylene-polyoxypropylene block copolymer) and consequent annealing at low temperature (400 degrees C). The scanning electron microscopy (SEM) indicated formation of spherical CuWO4 particles in the size range from 10 to 90 nm. The thermogravimetric analysis was used to study dehydration processes. The X-ray diffraction analysis undoubtedly confirmed formation of triclinic CuWO4 and the refinement of the diffraction data showed that CuWO4 powder belongs to the distorted tungstate type of structure with space group P (1) over bar. The structure of the CuWO4 can be described as infinite zigzag chains formed by edge-sharing alternating [W-O-6] and [Cu-O-6] octahedra. Indirect and direct band-gap energies of CuWO4 (2.3 and 3.5 eV, respectively) were determined using optical measurements.", journal = "Acta Chimica Slovenica", title = "Synthesis and Structural Characterization of Nano-sized Copper Tungstate Particles", volume = "59", number = "1", pages = "70-74", url = "https://hdl.handle.net/21.15107/rcub_vinar_4768" }
Jovanović, D. J., Validžić, I. Lj., Mitrić, M.,& Nedeljković, J.. (2012). Synthesis and Structural Characterization of Nano-sized Copper Tungstate Particles. in Acta Chimica Slovenica, 59(1), 70-74. https://hdl.handle.net/21.15107/rcub_vinar_4768
Jovanović DJ, Validžić IL, Mitrić M, Nedeljković J. Synthesis and Structural Characterization of Nano-sized Copper Tungstate Particles. in Acta Chimica Slovenica. 2012;59(1):70-74. https://hdl.handle.net/21.15107/rcub_vinar_4768 .
Jovanović, Dragana J., Validžić, Ivana Lj., Mitrić, Miodrag, Nedeljković, Jovan, "Synthesis and Structural Characterization of Nano-sized Copper Tungstate Particles" in Acta Chimica Slovenica, 59, no. 1 (2012):70-74, https://hdl.handle.net/21.15107/rcub_vinar_4768 .