Crystallization Region, Crystal Growth, and Characterization of Rubidium Titanyl Phosphate Codoped with Niobium and Lanthanide Ions

Carvajal, Joan J.; Nikolov, V.; Solé, R.; Gavaldà, Jna.; Massons, J.; Aguiló, Magdalena; Dı́az, Francesc

doi:10.1021/cm0200745

Cited by 24 publications

(30 citation statements)

References 13 publications

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“…These include the difficulty in producing highgrade TiO 2 with tightly controlled physical properties and the fact that, in its basic form, it functions only under UV irradiation [23]. Many factors govern the physicalchemical properties of TiO 2 during its production such as the speed of growth, the diffusion coefficient, and the ionic radii [24]. The method of preparation and posttreatment conditions also play prominent roles in synthesizing a high efficiency TiO 2 product [25].…”

Section: Effects Of Dopants In the Formation Ofmentioning

confidence: 99%

An Overview on the Photocatalytic Activity of Nano-Doped-TiO2 in the Degradation of Organic Pollutants

Tan

Wong

Mohamed

2011

ISRN Materials Science

112

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This paper aims to review and summarize the recent works on the photocatalytic degradation of various organic pollutants in the presence of nano-doped-TiO 2 photocatalysts. In this regard, three main aspects are examined: (a) the presence of various dopants (metal dopants, nonmetal dopants, halogen dopants, metalloid dopants, and codopants) in the formation of nano-doped-TiO 2 photocatalysts, (b) the effect of the presence of dopants on the photocatalytic degradation of organic pollutants, and (c) the effects of various operating parameters on the photocatalytic degradation of organic pollutants in the presence of nano-doped-TiO 2 photocatalysts. Reports resulted suggest that the formation of a high percentage of the anatase phase, small crystallite size, and high specific surface area of the nano-doped-TiO 2 photocatalysts depends on the presence of various dopants in the photocatalysts. The majority of the dopants have the potential to improve the photocatalytic efficiency of nano-doped-TiO 2 in the degradation of organic pollutants. The photocatalytic degradation of organic compounds depends on the calcination temperature of the prepared doped TiO 2 , initial reactant concentration, dosage of doped TiO 2 , and dopant doping concentration.

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Section: Effects Of Dopants In the Formation Ofmentioning

confidence: 99%

An Overview on the Photocatalytic Activity of Nano-Doped-TiO2 in the Degradation of Organic Pollutants

Tan

Wong

Mohamed

2011

ISRN Materials Science

112

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“…The crystal seed was rotated at an angular speed of 45 rpm to favor the homogenization of the solution of growth, and avoid the formation of flux inclusions in the crystals. Further details on the crystal growth procedure can be found elsewhere [17]. For the experiments, 1mm thick plate samples with their main faces perpendicular to the polar axis were cut and polished up to optical grade.…”

Section: Introductionmentioning

confidence: 99%

Plasmonic enhancement of second harmonic generation from nonlinear RbTiOPO_4 crystals by aggregates of silver nanostructures

Sánchez‐García¹,

Tserkezis²,

Ramı́rez³

et al. 2016

Opt. Express

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Abstract:We demonstrate a 60-fold enhancement of the second harmonic generation (SHG) response at the nanoscale in a hybrid metal-dielectric system. By using complex silver nanostructures photochemically deposited on the polar surface of a ferroelectric crystal, we tune the plasmonic resonances from the visible to the near-infrared (NIR) spectral region, matching either the SH or the fundamental frequency. In both cases the SHG signal at the metal-dielectric interface is enhanced, although with substantially different enhancement values: around 5 times when the plasmonic resonance is at the SH frequency or up to 60 times when it matches the fundamental NIR radiation. The results are consistent with the more spatially-extended near-field response of complex metallic nanostructures and can be well explained by taking into account the quadratic character of the SHG process. The work points out the potential of aggregates of silver nanostructures for enhancing optical nonlinearities at the nanoscale and provides an alternative approach for the development of nanometric nonlinear photonic devices in a scalable way. References and links1. J. A. Armstrong, N. Bloembergen, J. Ducuing, and P. S. Pershan, "Interactions between light waves in a nonlinear dielectric," Phys. Rev. 127(6), 1918-1939 (1962). 2. P. Franken, A. E. Hill, C. W. Peters, and G. Weinreich, "Generation of optical harmonics," Phys. Rev. Lett. 7(4), 118-120 (1961). 1720-1723 (2011). 9. H. Aouani, M. Rahmani, M. Navarro-Cía, and S. A. Maier, "Third-harmonic-upconversion enhancement from a single semiconductor nanoparticle coupled to a plasmonic antenna," Nat. Nanotechnol. 9(4), 290-294 (2014). 10. N. Kauranen and A. V. Zayats, "Nonlinear plasmonics," Nat. Photonics 6(11), 737-748 (2012 harmonic emission by plasmonic resonances at the second harmonic wavelength," Nano Lett. 15(6), 3917-3922 (2015).

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“…This family of materials crystallizes in the orthorhombic system. Recently, we have shown that the use of Nb 5þ as co-dopant in RTP allows us to obtain a high concentration of Ln 3þ doping on the basis of charge compensation [18,19].…”

Section: Introductionmentioning

confidence: 99%

Spectroscopic and second harmonic generation properties of a new crystal: Yb-doped RbTiOPO4

et al. 2004

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Crystallization Region, Crystal Growth, and Characterization of Rubidium Titanyl Phosphate Codoped with Niobium and Lanthanide Ions

Cited by 24 publications

References 13 publications

An Overview on the Photocatalytic Activity of Nano-Doped-TiO2 in the Degradation of Organic Pollutants

An Overview on the Photocatalytic Activity of Nano-Doped-TiO2 in the Degradation of Organic Pollutants

Plasmonic enhancement of second harmonic generation from nonlinear RbTiOPO_4 crystals by aggregates of silver nanostructures

Spectroscopic and second harmonic generation properties of a new crystal: Yb-doped RbTiOPO4

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