Optically Functional Zeolites: Evaluation of UV and VUV Stimulated Photoluminescence Properties of Ce3+- and Tb3+-doped Zeolite X

Jüstel, T.; Wiechert, Detlef; Lau, Chak Po; Sendor, Dorota; Kynast, Ulrich

doi:10.1002/1616-3028(200104)11:2<105::aid-adfm105>3.0.co;2-j

Cited by 76 publications

(39 citation statements)

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“…Es wurde auch berichtet, dass Intrazeolithübergänge, die bei ca. 180 nm auftreten, Lanthanoidionen sensibilisieren 5a. Es ist jedoch unklar, inwiefern ein (in anderen Fällen bedeutender) Ladungstransfer von Gerüst‐Sauerstoffatomen auf Metallkationen beteiligt ist 7…”

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Eingeschlossene Lanthanoide als lumineszierende Materialien

2002

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Eingeschlossene Lanthanoide als lumineszierende Materialien

2002

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“…There is evidence of R I cation substitutions for Ln 3+ (Ln denotes lanthanides) in zeolites, suggesting that Ln 3+ could substitute into R I sites in the sodalite structure considering that the ionic radii of the Ln 3+ cations in the waste are similar to that of Na + (Table ), but this has yet to be demonstrated . The chemical equation for reacting alkali chlorides (e.g., NaCl) with colloidal silica and sodium aluminate to create sodalite is presented in Eq.…”

Section: Background and Approachmentioning

confidence: 99%

Solution‐Derived, Chloride‐Containing Minerals as a Waste Form for Alkali Chlorides

et al. 2012

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Sodalite (Na 8 (AlSiO 4 ) 6 Cl 2 ) and cancrinite ((Na,K) 6 Ca 2 (AlSiO 4 ) 6 Cl 4 ) are environmentally stable, chloride-containing minerals that are a logical waste form option for the mixed alkali chloride salt waste stream that is generated from a proposed electrochemical separations process during nuclear fuel reprocessing. Here, we discuss a low-temperature, solution-based process to make these phases where sodalite particles are produced in the form of a fine powder with particle sizes on the order of 1-10 lm. Due to the small particle size, these powders require additional treatment to form a monolith. In this study, the powders were pressed into pellets and fired to achieve >90% of the theoretical density of sodalite (2.27 3 10 À3 kg/m 3 ). The cancrinite structure, identified as the best candidate mineral form in terms of waste loading capacity, was only produced on a limited basis but was converted to sodalite upon firing. Here, we discuss the specifics of the solution-based approach, the chemical durability of select waste forms as well as the steps taken to maximize the chloride-containing phases, decrease chloride loss during pellet firing, and to increase pellet densities.E. Vance-contributing editor Manuscript No. 31209.

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“…Thus, zeolite Y was chosen to be loaded with the activator species for its high ion‐exchange capability and numerous hospitable cavities and sites. Rare‐earth double doping of zeolite has become a very interesting topic in both experiment and theoretical luminescence phenomenon studies, especially investigation on Ce 3+ –Tb 3+ doping and Eu 3+ –Tb 3+ doping . As for zeolite modified with Y 3+ or Zn 2+ , doping monometal ion and bimetal ions were carried out to enrich photoluminescence theoretical knowledge of ion exchanged zeolite Y.…”

Section: Introductionmentioning

confidence: 99%

Photophysical Properties of Metal Ion Functionalized NaY Zeolite

Duan

Yan

2014

Photochem & Photobiology

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A series of luminescent ion exchanged zeolite are synthesized by introducing various ions into NaY zeolite. Monometal ion (Eu(3+), Tb(3+), Ce(3+), Y(3+), Zn(2+), Cd(2+), Cu(2+)) exchanged zeolite, rare-earth ion (Eu(3+), Tb(3+), Ce(3+)) exchanged zeolite modified with Y(3+) and rare-earth ion (Eu(3+), Tb(3+), Ce(3+)) exchanged zeolite modified with Zn(2+) are discussed here. The resulting materials are characterized by Fourier transform infrared spectrum radiometer (FTIR), XRD, scanning electronic microscope (SEM), PLE, PL and luminescence lifetime measurements. The photoluminescence spectrum of NaY indicates that emission band of host matrix exhibits a blueshift of about 70 nm after monometal ion exchange process. The results show that transition metal ion exchanged zeolites possess a similar emission band due to dominant host luminescence. A variety of luminescence phenomenon of rare-earth ion broadens the application of zeolite as a luminescent host. The Eu(3+) ion exchanged zeolite shows white light luminescence with a great application value and Ce(3+) exchanged zeolite steadily exhibits its characteristic luminescence in ultraviolet region no matter in monometal ion exchanged zeolite or bimetal ions exchanged zeolite.

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Optically Functional Zeolites: Evaluation of UV and VUV Stimulated Photoluminescence Properties of Ce3+- and Tb3+-doped Zeolite X

Cited by 76 publications

References 5 publications

Eingeschlossene Lanthanoide als lumineszierende Materialien

Eingeschlossene Lanthanoide als lumineszierende Materialien

Solution‐Derived, Chloride‐Containing Minerals as a Waste Form for Alkali Chlorides

Photophysical Properties of Metal Ion Functionalized NaY Zeolite

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