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Template-free synthesis of novel, highly-ordered 3D hierarchical Nb<sub>3</sub>O<sub>7</sub>(OH) superstructures with semiconductive and photoactive properties

Template-free synthesis of novel, highly-ordered 3D hierarchical Nb3O7(OH) superstructures with semiconductive and photoactive properties

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Prüfsumme: MD5:30bbf7a9aa22b0f00ffff4f5c273c405

BETZLER, Sophia B., Andreas WISNET, Benjamin BREITBACH, Christoph MITTERBAUER, Jonas WEICKERT, Lukas SCHMIDT-MENDE, Christina SCHEU, 2014. Template-free synthesis of novel, highly-ordered 3D hierarchical Nb3O7(OH) superstructures with semiconductive and photoactive properties. In: Journal of Materials Chemistry A. 2(30), pp. 12005-12013. ISSN 2050-7488. eISSN 2050-7496

@article{Betzler2014Templ-28968, title={Template-free synthesis of novel, highly-ordered 3D hierarchical Nb3O7(OH) superstructures with semiconductive and photoactive properties}, year={2014}, doi={10.1039/C4TA02202E}, number={30}, volume={2}, issn={2050-7488}, journal={Journal of Materials Chemistry A}, pages={12005--12013}, author={Betzler, Sophia B. and Wisnet, Andreas and Breitbach, Benjamin and Mitterbauer, Christoph and Weickert, Jonas and Schmidt-Mende, Lukas and Scheu, Christina} }

Breitbach, Benjamin Betzler, Sophia B. 3D hierarchical Nb<sub>3</sub>O<sub>7</sub>(OH) mesocrystals can be formed by self-organization from nanometer sized building blocks. The present study focuses on the synthesis and detailed investigation of mesocrystals, which can be achieved from a one-step, template-free hydrothermal synthesis approach. The obtained cubic superstructures consist of a periodic nanowire-network and combine a large surface area, high crystallinity, with a band gap of 3.2 eV and photocatalytic activity. Their easy processability in combination with the named excellent properties makes them promising candidates for a large number of applications. These include photochemical and photophysical devices where the Nb<sub>3</sub>O<sub>7</sub>(OH) mesocrystals can be used as electrode material since they are semiconducting and possess a large surface area. Generally the forces involved in the self-organized formation of mesocrystals are not fully understood. In this regard, the assembly of the Nb<sub>3</sub>O<sub>7</sub>(OH) mesocrystals was investigated in-depth applying transmission electron microscopy, scanning electron microscopy, UV/Vis measurements and electron energy-loss spectroscopy. Based on the achieved results a formation mechanisms is proposed, which expands the number of mechanisms for mesocrystal formation reported in literature. In addition, our study reveals different types of nanowire junctions and investigates their role at the stabilization of the networks. Journal of materials chemistry / A ; 2 (2014), 30. - S. 12005-12013 Wisnet, Andreas Weickert, Jonas 2014-09-12T11:29:27Z Mitterbauer, Christoph Betzler, Sophia B. Scheu, Christina deposit-license eng Schmidt-Mende, Lukas Breitbach, Benjamin Template-free synthesis of novel, highly-ordered 3D hierarchical Nb<sub>3</sub>O<sub>7</sub>(OH) superstructures with semiconductive and photoactive properties 2014 Scheu, Christina Wisnet, Andreas Mitterbauer, Christoph Schmidt-Mende, Lukas Weickert, Jonas

Dateiabrufe seit 01.10.2014 (Informationen über die Zugriffsstatistik)

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