Cesium adsorption on<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">TiO</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>(110)

Grant, Ann W.; Campbell, Charles T.

doi:10.1103/physrevb.55.1844

Cited by 65 publications

(37 citation statements)

References 46 publications

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“…We suspect that this change is attributed to the creation of partially reduced Ti ions, which is consistent with previous reports that the Ti (2p) peaks shift considerably to a lower binding energy upon Cs or K adsorption. [29,30] The Cs 3d 5/2 peak position of TiO 2 :Cs shifted toward a lower binding energy, compared to that of Cs 2 CO 3 , which also supports the idea of charge transfer between TiO 2 and Cs. Metal ions in an organic/inorganic matrix can act as a doping component.…”

Section: Synthesis and Characterizationsupporting

confidence: 61%

Doping of the Metal Oxide Nanostructure and its Influence in Organic Electronics

Park

Kumar

et al. 2009

Adv Funct Materials

173

149

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Synthesizing metal oxides through the sol–gel process provides a convenient way for forming a nanostructured layer in wide band gap semiconductors. In this paper, a unique method of introducing dopants into the metal oxide semiconductor is presented. The doped TiO2 is prepared by adding a Cs2CO3 solution to a nanocrystalline TiO2 solution that is synthesized via a non‐hydrolytic sol–gel process. The properties of the TiO2:Cs layer are investigated and the results show stable nanostructure morphology. In addition to providing morphological stability, Cs in TiO2 also gives rise to a more desirable work function for charge transport in organic electronics. Polymer solar cells based on the poly(3‐hexylthiophene) (P3HT): methanofullerene (PC70BM) system with the addition of a TiO2:Cs interfacial layer exhibit excellent characteristics with a power conversion efficiency of up to 4.2%. The improved device performance is attributed to an improved polymer/metal contact, more efficient electron extraction, and better hole blocking properties. The effectiveness of this unique functionality also extends to polymer light emitting devices, where a lower driving voltage, improved efficiency, and extended lifetime are demonstrated.

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Section: Synthesis and Characterizationsupporting

confidence: 61%

Doping of the Metal Oxide Nanostructure and its Influence in Organic Electronics

Park

Kumar

et al. 2009

Adv Funct Materials

173

149

View full text Add to dashboard Cite

show abstract

“…The major disadvantage of titanium dioxide is the large band-gap of 3.2 eV, so wavelengths below 400 nm are necessary for excitation, which limits the photosensitivity to the UV part of the solar spectrum [2] . The advances on the photocatalytic activity improvement of TiO 2 have been obtained from the doping of transition metal elements and rare metal elements in TiO 2 [3][4][5] . The investigation of nitrogen doping on TiO 2 has received significant attentions in recent years.…”

Section: Introductionmentioning

confidence: 99%

Effects of nitrogen doping on microstructure and photocatalytic activity of nanocrystalline TiO2 powders

Yang

Zhou

2007

J. Wuhan Univ. Technol.

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Nitrogen-doped TiO 2 nanocrystalline powders were prepared by hydrolysis of tetrachloride titanium (TiCl 4 ) in a mixed solution of ethanol and ammonium nitrate (NH 4 NO 3 ) at ambient temperature and atmosphere followed by calcination at 400 ℃ for 2 h in air. FTIR spectra demonstrate that amine group in original gel is eliminated by calcination, and the TiO 2 powder is liable to absorb water onto its surface and into its capillary pore. XRD and SEM results show that the average size of nanocrystalline TiO 2 particles is no more than 60 nm and with increasing the calcination temperature, the size of particles increases. XPS studies indicate the nitrogen atom enters into the TiO 2 lattice and occupies the position of oxygen atom. The nitrogen doping not only depresses the grain growth of TiO 2 particles, but also reduces the phase transformation temperature of anatase to rutile. The photocatalytic activity of the nitrogen-doped TiO 2 powders has been evaluated by experiments of photocatalytic degradation aqueous methylene blue.

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“…从图 5 可以看出, 在最初吸附的 2 h 内, 砷吸附率快速增加, 在吸附 24 h 后, 吸附基本达到平衡, 此时 PBA-多孔陶瓷球对砷的吸附率可达 82%. 该吸附曲线的模式与离子交换模式相符合 [13,14] , 说明 PBA-多孔陶瓷球表面上普鲁士类似物中的 K 离子与溶液中砷离子发生了离子交换. …”

Section: 普鲁士类似物修饰多孔陶瓷球对 As 离子的吸附unclassified

Preparation of Prussian Blue Analogue Modified Porous Ceramic Balls and Its Application in As Adsorption

Guang¹,

Guo²,

Liu³

2012

Acta Chim. Sinica

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Porous ceramic ball with the size of 3～5 mm was prepared by powder sintering and space-holder method at 1573 K for 1 h. A desilication process was adopted to decrease the Si/Al molar ratio of porous ceramic ball surface. After being alkaline treated in 1 mol/L NaOH solution for 10 h, Si/Al molar ratio of porous ceramic ball surface was decreased from 4.5 to 1.76. Surface topography of the desilicated and undesilicated porous ceramic balls were investigated by scanning electron microscopy (SEM). In the SEM images of desilicated porous ceramic ball, plenty of nanoparticles about 30 nm were observed. The reveal of the 30 nm nanoparticles means that the amorphous phase which was generated in the sintering process was greatly dissolved into the NaOH solution. A Prussian blue analogue was synthesized on the surface of the desilicated porous ceramic balls by the reaction between desilicated porous ceramic balls and potassium ferrocyanide solution. The Prussian blue analogue on the surface of desilicated porous ceramic ball was characterized by powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and infrared absorption spectrum (IR), which showed that a kind of Al-Fe Prussian blue analogue was fabricated on the surface of the desilicated porous ceramic balls. The mechanism of the formation of Al-Fe Prussian blue analogue on the surface of desilicated porous ceramic ball was also investigated, which showed that the desilication process plays an important role in the formation of Al-Fe Prussian blue analogue. By the desilication process, the Si/Al molar ratio of porous ceramic ball surface was greatly decreased, which means more Al-activity sites were generated. With the mixture of desilicated porous ceramic balls and potassium ferrocyanide solution, the 4 6Fe(CN) -was bonding to the Al atoms on the surface of desilicated porous ceramic ball and the Al-Fe Prussian blue analogue was generated. The As adsorption capacity of Prussian blue analogue modified porous ceramic ball was also investigated with NaH 2 AsO 4 as arsenic source.

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Cesium adsorption onTiO2(110)

Cited by 65 publications

References 46 publications

Doping of the Metal Oxide Nanostructure and its Influence in Organic Electronics

Doping of the Metal Oxide Nanostructure and its Influence in Organic Electronics

Effects of nitrogen doping on microstructure and photocatalytic activity of nanocrystalline TiO2 powders

Preparation of Prussian Blue Analogue Modified Porous Ceramic Balls and Its Application in As Adsorption

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