AbstractBulk gold is chemically inert and is generally regarded as a poor
catalyst. However, when gold is in very small particles with diameters below
10 nm and is deposited on metal oxides or activated carbon, it becomes
surprisingly active, especially at low temperatures, for many reactions such as
CO oxidation and propylene epoxidation. The catalytic performance of Au is
defined by three major ... hiện toàn bộ
AbstractStudies on ciguatera fish poisoning led to clarification of the absolute
stereochemistry of ciguatoxin, gambierol, gambieric acids, and maitotoxin.
Anisotropic NMR reagents and fluorometric chiral HPLC reagents were effectively
used together with synthesis of partial structures. Structures of 16 ciguatoxin
congeners were successfully elucidated by FAB/MS/MS using samples of 5 μg or
less. S... hiện toàn bộ
Nazzoly Rueda, José Cleiton Sousa dos Santos, Claudia Ortíz, Rodrigo Torres, Oveimar Barbosa, Rafael C. Rodrigues, Ãngel Berenguer-Murcia, Roberto Fernández‐Lafuente
AbstractThe pyridoxal‐5′‐phosphate (vitamin B6)‐dependent enzymes that act on
amino acid substrates have multiple evolutionary origins. Thus, the common
mechanistic features of B6 enzymes are not accidental historical traits but
reflect evolutionary or chemical necessities. The B6 enzymes belong to four
independent evolutionary lineages of paralogous proteins, of which the α family
(with aspartate... hiện toàn bộ
Peter R. Slater, Jonathan E.H. Sansom, Julian R. Tolchard
AbstractResearch into materials displaying oxide ion conductivity is attracting
considerable attention due to their potential technological applications in
devices such as Solid Oxide Fuel Cells. In this paper, recent work on
apatite‐type oxide ion conductors is reviewed, showing that a wide range of
cation substitutions are possible, due to the flexibility of the apatite
structure in accommodatin... hiện toàn bộ
AbstractSelected problems of electrochemical synthesis, characterization and
applications of titanium dioxide are reviewed. These issues have attracted
considerable attention from addressing purely academic questions up to promising
applications in devices for energy storage and energy conversion. DOI
10.1002/tcr.201100012
AbstractThis personal account concerns novel recent discoveries in the area of
mesoporous materials. Most of the papers discussed have been published within
the last two to three years. A major emphasis of most of these papers is the
synthesis of unique mesoporous materials by a variety of synthetic methods. Many
of these articles focus on the control of the pore sizes and shapes of
mesoporous mat... hiện toàn bộ
Mahmoud Nasrollahzadeh, Zahra Issaabadi, Mohammad Mostafa Tohidi, S. Mohammad Sajadi
AbstractThe carbon‐carbon and carbon‐heteroatom bonds catalytic formation is
among the most significant reactions in organic synthesis which extensively
applied for synthesis of natural products, heterocycles, dendrimers,
biologically active molecules and useful compounds. This review provides the
latest advances in the preparation of graphene supported metal nanoparticles and
their application in... hiện toàn bộ
Ali Ehsani, Ali Akbar Heidari, Hamid Mohammad Shiri
AbstractThis review gives an overview of the synthesis, surface and
electrochemical investigations over ternary nanocomposite of conductive polymers
in the development of new supercapacitors. They utilize both Faradaic and
non‐Faradaic procedures to store charge, leading to higher specific capacitance
and energy density, higher cell voltage, longer life cycle and moderated power
density. Owing to ... hiện toàn bộ
Sung Ho Yang, Woo‐Jae Chung, Sean McFarland, Seung‐Wuk Lee
ABSTRACT:For the last decade, the fabrication of ordered structures of phage has
been of great interest as a means of utilizing the outstanding biochemical
properties of phage in developing useful materials. Combined with other
organic/inorganic substances, it has been demonstrated that phage is a superior
building block for fabricating various functional devices, such as the electrode
in lithium‐... hiện toàn bộ