Biomolecule-Assisted Synthesis of Hierarchical Multilayered Boehmite and Alumina Nanosheets for Enhanced Molybdenum Adsorption

Indra Saptiama; Yusuf Valentino Kaneti; Brian Yuliarto; Hiroaki Kumada; Kunihiko Tsuchiya; Yoshitaka Fujita; Victor Malgras; Nobuyoshi Fukumitsu; Takeji Sakae; Kentaro Hatano; Katsuhiko Ariga; Yoshiyuki Sugahara; Yusuke Yamauchi

doi:10.1002/chem.201900177

Biomolecule-Assisted Synthesis of Hierarchical Multilayered Boehmite and Alumina Nanosheets for Enhanced Molybdenum Adsorption

Chemistry. 2019 Mar 27;25(18):4843-4855. doi: 10.1002/chem.201900177. Epub 2019 Mar 5.

Authors

Indra Saptiama^{1

2

3}, Yusuf Valentino Kaneti¹, Brian Yuliarto⁴, Hiroaki Kumada², Kunihiko Tsuchiya⁵, Yoshitaka Fujita⁵, Victor Malgras¹, Nobuyoshi Fukumitsu⁶, Takeji Sakae², Kentaro Hatano², Katsuhiko Ariga^{1

7}, Yoshiyuki Sugahara⁸, Yusuke Yamauchi^{9

10}

Affiliations

¹ International Center for Materials Nanoarchitectonics (WPI-MANA), and International Center for Young Scientists (ICYS), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.
² Faculty of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki, 305-8576, Japan.
³ Center for Radioisotope and Radiopharmaceutical Technology, National Nuclear Energy Agency (BATAN), Puspiptek Area, Serpong, South Tangerang, Indonesia.
⁴ Engineering Physics Department and Research Centre for Nanoscience and Nanotechnology, Institut Teknologi Bandung, Bandung, 40132, Indonesia.
⁵ Japan Atomic Energy Agency (JAEA), 4002 Narita, Oarai, Higashi-Ibaraki, Ibaraki, 311-1393, Japan.
⁶ Department of Radiotherapy, Kobe Proton Center, 1-6-8, Minatoshima Minamimachi, Kobe, Hyogo, 650-0047, Japan.
⁷ Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, 277-0827, Japan.
⁸ Department of Applied Chemistry and, Department of Nanoscience and Nanoengineering, Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo, 169-8555, Japan.
⁹ School of Chemical Engineering and, Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, Queensland, 4072, Australia.
¹⁰ Department of Plant & Environmental New Resources, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do, 446-701, South Korea.

PMID: 30652362
DOI: 10.1002/chem.201900177

Abstract

The effective utilization of various biomolecules for creating a series of mesoporous boehmite (γ-AlOOH) and gamma-alumina (γ-Al₂ O₃ ) nanosheets with unique hierarchical multilayered structures is demonstrated. The nature and concentration of the biomolecules strongly influence the degree of the crystallinity, the morphology, and the textural properties of the resulting γ-AlOOH and γ-Al₂ O₃ nanosheets, allowing for easy tuning. The hierarchical γ-AlOOH and γ-Al₂ O₃ multilayered nanosheets synthesized by using biomolecules exhibit enhanced crystallinity, improved particle separation, and well-defined multilayered structures compared to those obtained without biomolecules. More impressively, these γ-AlOOH and γ-Al₂ O₃ nanosheets possess high surface areas up to 425 and 371 m² g^-1 , respectively, due to their mesoporous nature and hierarchical multilayered structure. When employed for molybdenum adsorption toward medical radioisotope production, the hierarchical γ-Al₂ O₃ multilayered nanosheets exhibit Mo adsorption capacities of 33.1-40.8 mg g^-1 . The Mo adsorption performance of these materials is influenced by the synergistic combination of the crystallinity, the surface area, and the pore volume. It is expected that the proposed biomolecule-assisted strategy may be expanded for the creation of other 3D mesoporous oxides in the future.

Keywords: adsorption; alumina; mesoporous materials; metal oxides; nanostructures.