TiO2 synthesis inspired by biomineralization: control of morphology, crystal phase, and light-use efficiency in a single process

Journal of the American Chemical Society
Takayuki NonoyamaKatsuya Kato

Abstract

Hydroxyapatite is mineralized along the long axis of collagen fiber during osteogenesis. Mimicking such biomineralization has great potential to control inorganic structures and is fast becoming an important next-generation inorganic synthesis method. Inorganic matter synthesized by biomineralization can have beautiful and functional structures that cannot be created artificially. In this study, we applied biomineralization to the synthesis of the only photocatalyst in practical use today, titanium dioxide (TiO(2)). The photocatalytic activity of TiO(2) mainly relates to three properties: morphology, crystal phase, and light-use efficiency. To optimize TiO(2) morphology, we used a simple sequential peptide as an organic template. TiO(2) mineralized by a β-sheet peptide nanofiber template forms fiber-like shapes that are not observed for mineralization by peptides in the shape of random coils. To optimize TiO(2) crystal phase, we mineralized TiO(2) with the template at 400 °C to transform it into the rutile phase and at 700 °C to transform it into a mixed phase of anatase and rutile. To optimize light-use efficiency, we introduced nitrogen atoms of the peptide into the TiO(2) structure as doped elemental material during sinterin...Continue Reading

References

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Aug 24, 2010·Chemical Communications : Chem Comm·Takayuki NonoyamaKatsuya Kato
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May 17, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Takayuki NonoyamaKatsuya Kato
Sep 24, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Tatsuya KunoKatsuya Kato

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Citations

Apr 23, 2014·Dalton Transactions : an International Journal of Inorganic Chemistry·Yong YanPeter Schaaf
Aug 24, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Kazuki MuraiMasahiro Higuchi
Oct 20, 2012·Chemical Society Reviews·Chin-Yi ChiuYu Huang
Aug 14, 2015·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Rayomand ShahloriDuncan J McGillivray
May 24, 2019·Chemical Communications : Chem Comm·Panpan ChengHaizhou Yu
Dec 1, 2013·ChemPlusChem·Peng GaoDarren Delai Sun
Sep 17, 2013·Chemical Communications : Chem Comm·Kazuki MuraiKatsuya Kato
Feb 16, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Wen-Hui ZhangWei-De Zhang
Aug 27, 2014·Dalton Transactions : an International Journal of Inorganic Chemistry·Xiaobo WangGe Chen
Aug 3, 2021·Advanced Materials·Chang-Heum JoSeung-Taek Myung
Dec 17, 2014·Biomacromolecules·Gregory J BedwellPeter E Prevelige
Apr 4, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Armin Hernández-GordilloL Irais Vera-Robles
Jul 3, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Brittney HellnerFrançois Baneyx

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