Incorporation of iodates into hydroxyapatites: a new approach for the confinement of radioactive iodine

Campayo, Lionel; Grandjean, Agnès; Coulon, Antoine; Delorme, Rémy; Vantelon, Delphine; Laurencin, Danielle

doi:10.1039/c1jm14157k

Cited by 61 publications

(63 citation statements)

References 23 publications

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“…Because the washing procedure was thoroughly conducted, the adsorbed selenite ions on the particle surface might be ignored during experiments. However, other techniques are needed to identify the crystal structure of the synthetic SeHANs, such as solid state nuclear magnetic resonance [7,40].…”

Section: Discussionmentioning

confidence: 99%

Dual functional selenium-substituted hydroxyapatite

Wang

Zhou

et al. 2012

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Hydroxyapatite (HA) doped with trace elements has attracted much attention recently owing to its excellent biological functions. Herein, we use a facile co-precipitation method to incorporate selenium into HA by adding sodium selenite during synthesis. The obtained selenium-substituted HA products are needle-like nanoparticles which have size and crystallinity that are similar to those of the pure HA nanoparticles (HANs) when the selenium content is low. HANs are found to have the ability to induce the apoptosis of osteosarcoma cells, and the anti-tumour effects are enhanced after incorporation of selenium. Meanwhile, the nanoparticles can also support the growth of bone marrow stem cells. Furthermore, the flow cytometric results indicate that the apoptosis induction of osteosarcoma cells is caused by the increased reactive oxygen species and decreased mitochondrial membrane potential. These results show that the selenium-substituted HANs are potentially promising bone graft materials in osteosarcoma treatment due to their dual functions of supporting normal cell growth and inducing tumour cell apoptosis.

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Section: Discussionmentioning

confidence: 99%

Dual functional selenium-substituted hydroxyapatite

Wang

Zhou

et al. 2012

Interface Focus.

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“…Among the different classes of materials involving iodine, those developed in view of the immobilization of radioactive iodine‐129, one of the longest half‐life radionuclides (∼ 16 × 10 6 years), are worth mentioning . In this context, apatite‐based ceramics have been shown to be an attractive and realistic option, allowing the incorporation of iodine in the form of iodide I − (using mixed vanadate/phosphate lead apatites as host matrices) or iodate IO 3 − (using calcium phosphate apatites) . However, despite the importance of iodine in materials science, very few 127 I NMR experiments have been reported to date …”

Section: Introductionmentioning

confidence: 99%

“…[20] In this context, apatite-based ceramics have been shown to be an attractive and realistic option, allowing the incorporation of iodine in the form of iodide I À (using mixed vanadate/phosphate lead apatites as host matrices) [21] or iodate IO 3 À (using calcium phosphate apatites). [22] However, despite the importance of iodine in materials science, very few 127 I NMR experiments have been reported to date. [23] 119 Sn (I = 1/2) can exhibit very large CSA effects especially at ultra-high magnetic field and acts as well as a local probe of interest in inorganic chemistry.…”

Section: Introductionmentioning

confidence: 99%

⁸⁷Sr, ¹¹⁹Sn, ¹²⁷I Single and {¹H/¹⁹F}‐Double Resonance Solid‐State NMR Experiments: Application to Inorganic Materials and Nanobuilding Blocks

et al. 2016

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“…In many of those low temperature sintering glasses, AgI is still the phase that contains iodine and the glass functions as a matrix that encapsulates AgI. In addition to glasses, other waste forms for iodine have also been considered, including iodide sodalite (Sheppard et al, 2006;Maddrell et al, 2014), hydrotalcite-like layered bismuth-iodine-oxide (Krumhansl and Nenoff, 2011), organic frameworks (MOFs) materials (Sava et al, 2012), cyclodextrins compounds (Szente et al, 1999), uranyl borates (Wu et al, 2011), and apatites (Audubert et al, 1997;Carpena et al, 2001;Uno et al, 2001;Zhang et al, 2007;Le Gallet et al, 2010;Campayo et al, 2011;Stennett et al, 2011;Redfern et al, 2012;Lu et al, 2013;Yao et al, 2014). Each of above proposed waste forms for iodine has its unique advantages and limitations that in some part depend on the disposal condition.…”

Section: Introductionmentioning

confidence: 99%

“…The X cation often forms a tetrahedron with four oxygen atoms and can be substituted by P 5+ , Si 4+ , S 6+ , V 5+ , Cr 5+ , As 5+ , Mn 5+ , Ge 4+ . In some cases, the tetrahedron anion group can replaced by non-tetrahedron anions such as ReO 3− 5 (Baud et al, 1979) and BO 3− 3 (Campayo et al, 2011). The Z anion in the structural channel can be substituted by OH − , F − , Cl − , Br, I − , O 2− , CO 2− 3 , and IO − 3 .…”

Section: Introductionmentioning

confidence: 99%

Incorporation of iodine into apatite structure: a crystal chemistry approach using Artificial Neural Network

Wang

2015

Front. Earth Sci.

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Materials with apatite crystal structure have a great potential for incorporating the long-lived radioactive iodine isotope (129 I) in the form of iodide (I −) from nuclear waste streams. Because of its durability and potentially high iodine content, the apatite waste form can reduce iodine release rate and minimize the waste volume. Crystal structure and composition of apatite (A 5 (XO 4) 3 Z) was investigated for iodide incorporation into the channel of the structure using Artificial Neural Network. A total of 86 experimentally determined apatite crystal structures of different compositions were compiled from literature, and 44 of them were used to train the networks and 42 were used to test the performance of the trained networks. The results show that the performances of the networks are satisfactory for predictions of unit cell parameters a and c and channel size of the structure. The trained and tested networks were then used to predict unknown compositions of apatite that incorporates iodide. With a crystal chemistry consideration, chemical compositions that lead to matching the size of the structural channel to the size of iodide were then predicted to be able to incorporate iodide in the structural channel. The calculations suggest that combinations of A site cations of Ag + , K + , Sr 2+ , Pb 2+ , Ba 2+ , and Cs + , and X site cations, mostly formed tetrahedron, of Mn 5+ , As 5+ , Cr 5+ , V 5+ , Mo 5+ , Si 4+ , Ge 4+ , and Re 7+ are possible apatite compositions that are able to incorporate iodide. The charge balance of different apatite compositions can be achieved by multiple substitutions at a single site or coupled substitutions at both A and X sites. The results give important clues for designing experiments to synthesize new apatite compositions and also provide a fundamental understanding how iodide is incorporated in the apatite structure. This understanding can provide important insights for apatite waste forms design by optimizing the chemical composition and synthesis procedure.

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Incorporation of iodates into hydroxyapatites: a new approach for the confinement of radioactive iodine

Cited by 61 publications

References 23 publications

Dual functional selenium-substituted hydroxyapatite

Dual functional selenium-substituted hydroxyapatite

⁸⁷Sr, ¹¹⁹Sn, ¹²⁷I Single and {¹H/¹⁹F}‐Double Resonance Solid‐State NMR Experiments: Application to Inorganic Materials and Nanobuilding Blocks

Incorporation of iodine into apatite structure: a crystal chemistry approach using Artificial Neural Network

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Incorporation of iodates into hydroxyapatites: a new approach for the confinement of radioactive iodine

Cited by 61 publications

References 23 publications

Dual functional selenium-substituted hydroxyapatite

Dual functional selenium-substituted hydroxyapatite

87Sr, 119Sn, 127I Single and {1H/19F}‐Double Resonance Solid‐State NMR Experiments: Application to Inorganic Materials and Nanobuilding Blocks

Incorporation of iodine into apatite structure: a crystal chemistry approach using Artificial Neural Network

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⁸⁷Sr, ¹¹⁹Sn, ¹²⁷I Single and {¹H/¹⁹F}‐Double Resonance Solid‐State NMR Experiments: Application to Inorganic Materials and Nanobuilding Blocks