Investigation on degradation of dyestuff wastewater using visible light in the presence of a novel nano TiO2 catalyst doped with upconversion luminescence agent

Wang, Jun; Wen, Fan; Zhang, Zhaohong; Zhang, Xiangdong; Zhang, Pan; Zhang, Peng; Kang, Peng; Tong, Jian; Wang, Lei; Xu, Liang

doi:10.1016/j.jphotochem.2005.10.016

Cited by 45 publications

(19 citation statements)

References 21 publications

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“…In our previous work, we prepared some TiO 2 photocatalysts doping with fluoride-ULA (Wang et al 2006). Although the fluoride-ULA showed high efficiency in transforming visible light to ultraviolet light, it also suffered from a chemical instability, the high costs and the complex treated process.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic degradation of organic dyes by Er3+:YAlO3/TiO2 composite under solar light

et al. 2008

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In this work, Er 3? :YAlO 3 /TiO 2 composite was synthesized by a ultrasonic dispersion and liquid boil method. The Er 3? :YAlO 3 /TiO 2 composite and pure TiO 2 powder were characterized by XRD. The degradation of different organic dyes was used to evaluate the photocatalytic activity of the Er 3? :YAlO 3 /TiO 2 composite. It is found that the photocatalytic activity of Er 3? :YAlO 3 /TiO 2 composite is much higher than that for the similar system with only TiO 2 . Moreover, this Er 3? :YAlO 3 /TiO 2 composite provides a new way to take advantage of TiO 2 in sewage treatment aspects using solar light.

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Section: Introductionmentioning

confidence: 99%

Photocatalytic degradation of organic dyes by Er3+:YAlO3/TiO2 composite under solar light

et al. 2008

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“…For example, the trivalent erbium (Er) ion hosted in fluoride and oxide crystal matrices can emit in the ultraviolet and visible wavelength range. In addition, the previous work have already proved that 40CdF 2 Á60BaF 2 Á0.8Er 2 O 3 [24], Er 3? :YAlO 3 [25] and Er 3?…”

Section: Introductionmentioning

confidence: 85%

Synthesis of Er3+:Y3Al5O12 and its effects on the solar light photocatalytic activity of TiO2–ZrO2 composite

et al. 2011

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The Er 3? :Y 3 Al 5 O 12 as an upconversion luminescence agent, which can transform visible light into ultraviolet light, was synthesized by nitrate-citrate acid and calcined method. Then, a novel photocatalyst, Er 3? :Y 3 Al 5 O 12 /TiO 2 -ZrO 2 , was prepared using ultrasonic dispersion and liquid boiling method. The samples were characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM). In succession, the degradation process of organic dye was monitored by UVVis spectrum and ion chromatography for verifying the photocatalytic activity of Er 3? :Y 3 Al 5 O 12 /TiO 2 -ZrO 2 . The influences on its photocatalytic activity such as Ti/Zr molar ratio, heat-treated temperature, and time were studied. In addition, the influences of initial concentration, Er 3? :Y 3 Al 5 O 12 /TiO 2 -ZrO 2 amount, solar light irradiation time, and organic dye category on the photocatalytic degradation efficiency were also investigated. It was found the photocatalytic activity of Er is a useful photocatalytic material for the wastewater treatment duo to efficient utilization of solar light.

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“…Analogous to photovoltaics, photocatalytic systems having lanthanide-doped materials as spectral converters can operate on the same general principle but with enhanced performance. In 2005, Wang et al [11] developed the first visible photocatalyst, based on a combination of Er 2 O 3 upconversion materials with TiO 2 . To further tap into the potential of NIR light for enhanced photocatalytic reactions, in 2010 Qin et al [12] developed a NIR to UV upconversion system comprising TiO 2 -coated YF 3 :Yb/Tm nanoparticles as the photocatalyst.…”

Section: Introductionmentioning

confidence: 99%

Lanthanide-doped upconversion materials: emerging applications for photovoltaics and photocatalysis

et al. 2014

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Photovoltaics and photocatalysis are two significant applications of clean and sustainable solar energy, albeit constrained by their inability to harvest the infrared spectrum of solar radiation. Lanthanide-doped materials are particularly promising in this regard, with tunable absorption in the infrared region and the ability to convert the long-wavelength excitation into shorter-wavelength light output through an upconversion process. In this review, we highlight the emerging applications of lanthanide-doped upconversion materials in the areas of photovoltaics and photocatalysis. We attempt to elucidate the fundamental physical principles that govern the energy conversion by the upconversion materials. In addition, we intend to draw attention to recent technologies in upconversion nanomaterials integrated with photovoltaic and photocatalytic devices. This review also provides a useful guide to materials synthesis and optoelectronic device fabrication based on lanthanide-doped upconversion materials.

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Investigation on degradation of dyestuff wastewater using visible light in the presence of a novel nano TiO2 catalyst doped with upconversion luminescence agent

Cited by 45 publications

References 21 publications

Photocatalytic degradation of organic dyes by Er3+:YAlO3/TiO2 composite under solar light

Photocatalytic degradation of organic dyes by Er3+:YAlO3/TiO2 composite under solar light

Synthesis of Er3+:Y3Al5O12 and its effects on the solar light photocatalytic activity of TiO2–ZrO2 composite

Lanthanide-doped upconversion materials: emerging applications for photovoltaics and photocatalysis

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