National Institute for Materials Science 8 articles published in JoVE Chemistry Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts Akira Yamaguchi1,5, Toshihiro Takashima2, Kazuhito Hashimoto1,6, Ryuhei Nakamura3,4 1Department of Applied Chemistry, The University of Tokyo, 2Clean Energy Research Center, University of Yamanashi, 3Biofunctional Catalyst Research Team, RIKEN Center for Sustainable Resource Science, 4Earth-Life Science Institute (ELSI), Tokyo Institute of Technology, 5Department of Materials Science and Engineering, Tokyo Institute of Technology, 6National Institute for Materials Science Here, we present a protocol to prepare charge transfer chromophores based on a polyoxometalate/polymer composite membrane. Environment Self-standing Electrochemical Set-up to Enrich Anode-respiring Bacteria On-site Akihiro Okamoto1, Annette Rowe2, Xiao Deng3, Kenneth H. Nealson2 1International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 2Department of Earth Sciences, University of Southern California, 3Department of Applied Chemistry, The University of Tokyo On-site microbial enrichment or in situ cultivation techniques can facilitate the isolation of difficult-to-culture microbial taxa, especially from low-biomass or geochemically extreme environments. Here, we describe an electrochemical set-up without using an external power source to enrich microbial strains that are capable of extracellular electron transport (EET). Environment A Novel Method for the Pentosan Analysis Present in Jute Biomass and Its Conversion into Sugar Monomers Using Acidic Ionic Liquid Babasaheb M. Matsagar1, Shahriar A. Hossain2,3, Tofazzal Islam4, Yusuke Yamauchi2,3,5,6, Kevin C.-W. Wu1 1Department of Chemical Engineering, National Taiwan University, 2International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 3Australian Institute for Innovative Materials (AIIM), University of Wollongong, 4Department of Biotechnology, Bangabandhu Sheikh Mujibur Rahman Agricultural University, 5School of Chemical Engineering & Australian Institute for Bioengineering and Nanotechnology (AIBN), University of Queensland, 6Department of Plant and Environmental New Resources, Kyung Hee University We present a protocol for the synthesis of C5 sugars (xylose and arabinose) from a renewable non-edible lignocellulosic biomass (i.e., jute) with the presence of Brønsted acidic ionic liquids (BAILs) as the catalyst in water. The BAILs catalyst exhibited better catalytic performance than conventional mineral acid catalysts (H2SO4 and HCl). Biochemistry Electrochemical Detection of Deuterium Kinetic Isotope Effect on Extracellular Electron Transport in Shewanella oneidensis MR-1 Yoshihide Tokunou1, Kazuhito Hashimoto2, Akihiro Okamoto2 1Department of Applied Chemistry, University of Tokyo, 2Global Research Center for Environment and Energy based on Nanomaterials Science, National Institute for Materials Science Here we present a protocol of whole-cell electrochemical experiments to study the contribution of proton transport to the rate of extracellular electron transport via the outer-membrane cytochromes complex in Shewanella oneidensis MR-1. Chemistry Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain Norihiro Suzuki1,2, Minoru Osada3, Motasim Billah3,4, Yoshio Bando3,4, Yusuke Yamauchi5,6, Shahriar A. Hossain3,4 1Research Institute for Science and Technology (RIST), Tokyo University of Science (TUS), 2International Center for Young Scientists (ICYS), National Institute for Materials Science (NIMS), 3International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 4Australian Institute for Innovative Materials (AIIM), University of Wollongong, 5School of Chemical Engineering, Australian Institute for Bioengineering and Nanotechnology (AIBN), University of Queensland, 6Department of Plant & Environmental New Resources, Kyung Hee University Here, we present a protocol for the synthesis of porous barium titanate (BaTiO3) thin film by a surfactant-assisted sol-gel method, in which self-assembled amphipathic surfactant micelles are used as an organic template. Chemistry Synthesis of a Water-soluble Metal–Organic Complex Array Purnandhu Bose1, Pradip K. Sukul1, Omar M. Yaghi2,3,4, Kentaro Tashiro1 1International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 2Department of Chemistry, University of California–Berkeley, 3Materials Sciences Division, Lawrence Berkeley National Laboratory, 4Kavli Energy NanoSciences Institute at Berkeley, University of California–Berkeley A potential general method for the synthesis of water-soluble multimetallic peptidic arrays containing a predetermined sequence of metal centers is presented. Engineering Detection and Recovery of Palladium, Gold and Cobalt Metals from the Urban Mine Using Novel Sensors/Adsorbents Designated with Nanoscale Wagon-wheel-shaped Pores Sherif A. El-Safty1,2, Mohamed A. Shenashen1, Masaru Sakai3, Emad Elshehy1, Kohmei Halada1 1National Institute for Materials Science, Japan, 2Graduate School for Advanced Science and Engineering, Waseda University, 3Center for Research in Isotopes and Environmental Dynamics, Tsukuba University Because of the importance and extensive use of palladium, gold and cobalt metals in high-technology equipment, their recovery and recycling constitute an important industrial challenge. The metal recovery system described herein is a simple, low-cost means for the effective detection, removal, and recovery of these metals from the urban mine. Engineering Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities Han Sae Jung1,2, Hsin-Zon Tsai1, Dillon Wong1, Chad Germany1, Salman Kahn1, Youngkyou Kim1,3, Andrew S. Aikawa1, Dhruv K. Desai1, Griffin F. Rodgers1, Aaron J. Bradley1, Jairo Velasco Jr.1, Kenji Watanabe4, Takashi Taniguchi4, Feng Wang1,5,6, Alex Zettl1,5,6, Michael F. Crommie1,5,6 1Department of Physics, University of California at Berkeley, 2Department of Chemistry, University of California at Berkeley, 3Department of Chemical and Biomolecular Engineering, University of California at Berkeley, 4National Institute for Materials Science (Japan), 5Materials Sciences Division, Lawrence Berkeley National Laboratory, 6Kavli Energy NanoSciences Institute, University of California at Berkeley and Lawrence Berkeley National Laboratory This paper details the fabrication process of a gate-tunable graphene device, decorated with Coulomb impurities for scanning tunneling microscopy studies. Mapping the spatially dependent electronic structure of graphene in the presence of charged impurities unveils the unique behavior of its relativistic charge carriers in response to a local Coulomb potential.
