Synthesis and structural properties of manganese titanate MnTiO3 nanoparticle

Zhou, Guowei; Kang, Young Soo

doi:10.1016/j.msec.2003.09.017

Cited by 55 publications

(20 citation statements)

References 22 publications

(18 reference statements)

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“…Manganese ion in oxides is a well-known activator used mainly for producing tunable solid-state laser media, holographic recording and optical data storage as well as thermoluminescent detectors [6][7][8]. Recently, manganese titanate (MnTiO 3 ) has attracted much attention for its strong absorption in the visible region which may be propitious to the utilisation of solar energy [9] and photocatalysis [10].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterisation and optical properties of MnTiO₃nanopowders

Enhessari

Parviz

Karamali

et al. 2012

Journal of Experimental Nanoscience

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Pure manganese titanate (MnTiO 3 ) nanopowders have been synthesised by stearic acid gel method. Structural investigations by X-ray diffraction and scanning electron microscopy confirm that the synthesised material is MnTiO 3 with rhombohedral crystal structure. Transmission electron microscopy showed that the particle sizes are in the range of 22-30 nm. The formation of MnTiO 3 is further supported by the FT-IR and energy dispersive X-ray spectra. An optical band gap of 3.18 eV is determined for MnTiO 3 nanopowders from the UV-vis absorption spectrum. A broad emission band with maximum intensity at around 487 nm is observed in the photoluminescence spectra of MnTiO 3 nanopowders at room temperature depicting the blue emission, which can be attributed to the

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Section: Introductionmentioning

confidence: 99%

Synthesis, characterisation and optical properties of MnTiO₃nanopowders

Enhessari

Parviz

Karamali

et al. 2012

Journal of Experimental Nanoscience

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“…As Figure 4(b) shows, there is obvious Fe-Mn oxide metasomatic growth along the edge of the titania in later hydrothermal fluids in the Orebody IV flake. Generally, under oxidative conditions, Fe-Mn oxides alternate with titania according to the following reaction: MnO 2 +TiO 2 MnTiO → 3 +1/2O 2 MnTiO 3 carries MnO 6 anionic octahedra [48], which has relatively larger ion channels and space. As a result, light Mo isotope is easy to be adsorbed and preserved.…”

Section: /95mentioning

confidence: 99%

Molybdenum isotopic composition as a tracer for low-medium temperature hydrothermal ore-forming systems: A case study on the Dajiangping pyrite deposit, western Guangdong Province, China

Song

Wen

et al. 2011

Chin. Sci. Bull.

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Little is known about the range or controls on the molybdenum isotopic composition of low-medium temperature hydrothermal ore-forming systems. We present molybdenum isotope data from 12 hydrothermal syndepositional silicalite and carbonaceous slate samples from the Dajiangping pyrite deposit in western Guangdong Province, South China. The δ 97/95 Mo values from Orebody III range from −0.02‰ to 0.29‰, with an average of 0.18‰. In contrast, the composition values from Orebody IV display a larger variation from −0.70‰ to 0.62‰. However, the five samples from the main ore bed all show strong negative values. This indicates that the significant variation in molybdenum isotopic composition supports different hydrothermal ore-forming metallogenesis and a metallogenic environment between the two orebodies. Orebody III is likely to have been deposited from submarine exhalative hydrothermal fluids under a relatively strong reducing environment and Orebody IV may have also been influenced by hydrothermal superimposition in a more oxidized disequilibrium condition. In addition, the δ 97/95 Mo values of Orebody IV are clearly negative, together with the values increasing stratigraphically upward in the ore beds, suggesting that the metallogenic environment of Orebody IV is different from the open oceanic systems. There might be dynamic fractionation in this restricted environment. Therefore, the molybdenum isotope can be used as an effective tracer for the ore-forming fluid and metallogenic environment. molybdenum isotope, metallogenic environment, Dajiangping pyrite deposit Citation:Song S M, Hu K, Wen H J, et al. Molybdenum isotopic composition as a tracer for low-medium temperature hydrothermal ore-forming systems: A case study on the Dajiangping pyrite deposit, western Guangdong Province, China.

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“…Recently, manganese titanate (MnTiO 3 ) has attracted much attention for its strong absorption in the visible region which may be propitious to the M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 5 utilization of solar energy [24] and photo catalysis [25]. Manganese titanate, pyrophanite MnTiO 3 , is a humidity sensing material with good selectivity, excellent sensitivity, low temperature coefficient near zero and good stability.…”

Section: Introductionmentioning

confidence: 99%

“…Manganese titanate, pyrophanite MnTiO 3 , is a humidity sensing material with good selectivity, excellent sensitivity, low temperature coefficient near zero and good stability. The pyrophanite MnTiO 3 has also been studied for magnetic and photoelectrochemical properties [24]. Electrochemical techniques using chemically modified electrodes have been widely applied as selective and sensitive analytical tools for biotechnical, clinical and environmental analysis [26][27][28].…”

Section: Introductionmentioning

confidence: 99%