Transcending Autologous Cranioplasty

Selvam, Murali Mohan; Nandini, Yamini; Gupta, Robin Harshvardhan

doi:10.4103/0028-3886.279662

Cited by 6 publications

(1 citation statement)

References 5 publications

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“…Therefore, it is highly desirable to identify a synthesis methodology that produces mixed-phase porous titania containing intrinsic defects. In this regard, Selvam et al [40][41][42][43] have recently demonstrated the successful synthesis of ordered 2D-hexagonal mesoporous titania in a reproducible way via the kinetically-controlled EISA process. In order to understand the photoactivity and its performance, in this study, an in-depth investigation is undertaken by tuning the pore structure and nitrogen-doping relating to intrinsic defects, viz., electrons trapped in oxygen vacancy and/or trivalent titanium centres.…”

Section: Introductionmentioning

confidence: 99%

Defect‐induced Ordered Mesoporous Titania Molecular Sieves: A Unique and Highly Efficient Hetero‐phase Photocatalyst for Solar Hydrogen Generation

Gupta,

Vatti,

et al. 2023

ChemNanoMat

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The conversion of solar energy into fuel has gained significant interest, particularly in photocatalytic water splitting, and the materials that efficiently generate hydrogen from water or aqueous solution using solar irradiation are highly desired for the hydrogen economy. Photocatalysts made of N‐doped TiO2 are frequently utilized for breaking of water molecules in the process of generating hydrogen. To achieve this target, a unique defect‐induced nitrogen‐doped highly organized 2D‐hexagonal periodic mesoporous titania, TiO2‐xNy with a well‐crystallized framework is synthesized in a reproducible way using structure‐directing agents, e. g., F108, F127, P123, and CTAB. The nitrogen is incorporated into these samples through a facile method involving the calcination of templated materials in an air. A systematic characterization of the resulting ordered mesoporous titania employing a battery of experimental techniques indicates the presence of considerable amounts of intrinsic defects, viz., trapped electrons in oxygen vacancy and/or Ti3+ centres via nitrogen‐doping in the titania matrix. These defects in turn promote the charge separation of photogenerated excitons, and therefore exhibit excellent photocatalytic activity for the hydrogen evolution reaction as compared to commercial titania such as Aeroxide®P‐25. The superior activity of the N‐doped mesoporous TiO2 is attributed to the synergistic effect of facile charge migration with high carrier density, unique phase composition (bronze and anatase), slow recombination of photo‐induced excitons, and enhanced absorbance from ultra‐violet to the visible region.

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Section: Introductionmentioning

confidence: 99%

Defect‐induced Ordered Mesoporous Titania Molecular Sieves: A Unique and Highly Efficient Hetero‐phase Photocatalyst for Solar Hydrogen Generation

Gupta,

Vatti,

et al. 2023

ChemNanoMat

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Low-cost acrylic cranioplasty using an implant cast on a pre-printed 3D polylactic acid model in a child with a complicated osteolytic extradural hydatid cyst

Borni,

Kammoun,

Taallah

et al. 2024

Childs Nerv Syst

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Low-cost acrylic cranioplasty using an implant cast on a pre-printed 3D polylactic acid model in a child with a complicated osteolytic extradural hydatid cyst

Borni,

Kammoun,

Taallah

et al. 2024

Preprint

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Cranioplasty to restore calvarial defects involves reconstruction with alloplastic materials or autologous tissues in order to provide the best protection to all intracranial contents. Sometimes, autologous bone may not be available; therefore, different materials have emerged such as polymethylmethacrylate plate, titanium mesh, and hydroxyapatite. However, when it is impossible to replace the autologous bone, the aesthetic result is generally unsatisfactory. Some techniques like neuronavigation and computer-aided design can help overcome these problems. However, these techniques cost too much. By combining these techniques and that of 3D printing, some authors have provided an aesthetically precise and cost-effective implant using polymethylmethacrylate in patients with large craniectomy defects. Here, the authors report a case of a 6-year-old child with history of two previous surgeries for osteolytic extradural and complicated hydatid cyst followed by intra cerebral dissemination who was admitted for recurrence of his hydatid pathology. The child was scheduled for hydatid cysts resection and cranioplasty using the polymethylmethacrylate, after removal of the hydatid cysts, using a bone flap cast on a pre-printed cost effective polylactic acid 3D mold.

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Transcending Autologous Cranioplasty

Cited by 6 publications

References 5 publications

Defect‐induced Ordered Mesoporous Titania Molecular Sieves: A Unique and Highly Efficient Hetero‐phase Photocatalyst for Solar Hydrogen Generation

Defect‐induced Ordered Mesoporous Titania Molecular Sieves: A Unique and Highly Efficient Hetero‐phase Photocatalyst for Solar Hydrogen Generation

Low-cost acrylic cranioplasty using an implant cast on a pre-printed 3D polylactic acid model in a child with a complicated osteolytic extradural hydatid cyst

Low-cost acrylic cranioplasty using an implant cast on a pre-printed 3D polylactic acid model in a child with a complicated osteolytic extradural hydatid cyst

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