Synthesis and photocatalytic property of a mixture of anatase and rutile TiO2 doped with Fe by mechanical alloying process

Jho, Jae Han; Kim, Dong Hyun; Kim, Sun–Jae; Lee, Kyung Sub

doi:10.1016/j.jallcom.2007.04.285

Cited by 52 publications

(22 citation statements)

References 27 publications

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“…A c c e p t e d M a n u s c r i p t Photocatalytic degradation of environmentally harmful organic compounds by Fe doped TiO 2 has been extensively studied [30][31][32][33][34][35][36]. The photoelectric response of this promising photoanode has also been studied [18].…”

Section: Page 6 Of 53mentioning

confidence: 99%

Evaluation of surface energy state distribution and bulk defect concentration in DSSC photoanodes based on Sn, Fe, and Cu doped TiO2

Ako

Ekanayake

Young

et al. 2015

Applied Surface Science

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Section: Page 6 Of 53mentioning

confidence: 99%

Evaluation of surface energy state distribution and bulk defect concentration in DSSC photoanodes based on Sn, Fe, and Cu doped TiO2

Ako

Ekanayake

Young

et al. 2015

Applied Surface Science

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“…Transformation of anatase to rutile phase during mechanical alloying process is occurred below its transformation temperature. This is due to the thermal energy of collision during milling process and the crystal defects, such as vacancy and crystal distortion that may increase the free energy of anatase phase, thus decrease the phase transformation temperature [11].…”

Section: Resultsmentioning

confidence: 99%

Milling time and temperature dependence on Fe2TiO5 nanoparticles synthesized by mechanical alloying method

Fajarin¹,

Purwaningsih²,

Widyastuti³

et al. 2014

AIP Conference Proceedings

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“…The crystallite sizes of anatase and rutile TiO 2 are about 22.4 nm and 21.9 nm for pure TiO 2 nanofibers respectively, and are about 17.5 nm and 16.3 nm for those of Cu-doped TiO 2 nanofibers (which are estimated by Scherrer formula [26]). The crystallographic compositions are calculated with the following equation [27]:…”

Section: Resultsmentioning

confidence: 99%

Improved and excellent CO sensing properties of Cu-doped TiO2 nanofibers

Wang

Zhao

et al. 2010

Chin. Sci. Bull.

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Cu-doped TiO 2 nanofibers with an average diameter of about 80 nm are synthesized through an electrospinning method. Both anatase and rutile crystallographic structures are found in the fibers based on XRD results. Compared with pure TiO 2 nanofibers, the Cu-doped TiO 2 nanofibers exhibit improved CO sensing properties at 300°C. The sensitivity of Cu-doped TiO 2 nanofibers is up to 3 when the sensor is exposed to 5 ppm CO, and the response and recovery times are about 4 and 8 s, respectively. Good selectivity is also observed in our investigations. These results indicate that the Cu-doped TiO 2 nanofibers can be used to fabricate high performance CO sensors in practice. CO, nanomaterials, metal oxide semiconductors, gas sensors, chemical sensorsCitation: Wang B, Zhao Y D , Hu L M, et al. Improved and excellent CO sensing properties of Cu-doped TiO 2 nanofibers.The gas sensor, as an important field in chemical sensors, gains considerable attention driven by its practical applications in monitoring and control of air quality, detection of flammable or toxic gases, medical diagnosis, and optimization of combustion efficiency [1][2][3][4][5][6]. Based on their high response value, fast response, quick recovery, excellent stability and simplicity in fabrication, metal-oxide semiconductors (MOS) have been widely chosen as the sensing materials for gas sensors over the last forty years [7-10]. MOS nanoparticles with small sizes exhibit high sensitivity to the detected gases, but their sensing properties often suffer from degradation because of the aggregation growth among MOS nanoparticles. In recent years, one-dimensional (1D) MOS nanostructures have received considerable attention because they avoid such degradation. On the other hand, the large surface-to-volume ratio of 1D MOS nanostructures and the congruence of the carrier screening length with their lateral dimensions make them highly sensitive and efficient transducers of surface chemical processes into electrical signals. Hitherto, impressive and promising results regarding the synthesis, fabrication, chemical and physical properties of these 1D nanostructures have been achieved [11][12][13]. TiO 2 is an important MOS with a variety of applications in environmental cleaning and protection, photocatalysis, solar cells, and chemical/physical sensors [14][15][16][17][18]. For gas sensors, TiO 2 is proven to be a highly sensitive material for the detection of both reducing and oxidizing gases. Many scientific and technological efforts have been put on improving the sensing performance based on the TiO 2 gas sensors, such as adding catalysts, doping metals and metal oxides, decreasing grain size, controlling pore and surface defects, etc. Among these methods, doping metals or metal oxides (such as Al, La, Nb, Cu, ZnO and SnO 2 ) on TiO 2 have been proved to be a simple and efficient route to enhance the sensing properties [19,20]. However, to the best of our knowledge, few papers on the doped 1D TiO 2 gas sensors have been reported. On the other hand, the fabricatio...

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Synthesis and photocatalytic property of a mixture of anatase and rutile TiO2 doped with Fe by mechanical alloying process

Cited by 52 publications

References 27 publications

Evaluation of surface energy state distribution and bulk defect concentration in DSSC photoanodes based on Sn, Fe, and Cu doped TiO2

Evaluation of surface energy state distribution and bulk defect concentration in DSSC photoanodes based on Sn, Fe, and Cu doped TiO2

Milling time and temperature dependence on Fe2TiO5 nanoparticles synthesized by mechanical alloying method

Improved and excellent CO sensing properties of Cu-doped TiO2 nanofibers

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