Materials Literature
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A new MoS2 protected n(+)p-junction Si photocathode for the renewable H2 evolution is presented here. MoS2 acts as both a protective and an electrocatalytic layer, allowing H2 evolution at 0 V vs. RHE for more than 5 days. Using a MoSx surface layer decreases the overpotential for H2 evolution by 200 mV.
Structural characterisation of sialylated glycoproteins in time and space is a requirement for further understanding of their involvement in biology. In this second of two related reviews, our focus is on the liquid chromatography (LC) and mass spectrometry (MS) based techniques, which have become the golden analytica…
Four natural pigments, extracted from the leaves of teak (Tectona grandis), tamarind (Tamarindus indica), eucalyptus (Eucalyptus globulus), and the flower of crimson bottle brush (Callistemon citrinus), were used as sensitizers for TiO2based dye-sensitized solar cells (DSSCs). The dyes have shown absorption in broad r…
The present work establishes a process for the anodic growth of self-organized TiO(2) nanotubes with a single-walled morphology. This yields not only a much more defined tube geometry but also provides a significant increase in properties and prospect for a wide range of TiO(2) nanotube applications.
This Perspective discusses the physics, implementation and findings of Kinetic Monte Carlo (KMC) models applied to organic photovoltaic devices (OPVs). It is shown that KMC models can relate morphology and energy levels on the nano-scale to geminate and non-geminate recombination, charge transport, charge injection an…
D-π-A fluorescent dye with two pyridyl groups as an electron-withdrawing-injecting anchoring group possessing a high coordinate bonding ability to Lewis acid sites on the TiO2 surface, which can lead to high dye loading on the TiO2 film and efficient electron injection, has been developed as a new type of D-π-A dye se…
Delivery of drugs and macromolecules to the central nervous system (CNS) is hindered by the blood-brain barrier (BBB). Several approaches have been used to overcome this hindrance to facilitate the treatment of various CNS diseases. We now present results showing that chimeric adeno-associated virus 2/1 (AAV2/1) parti…
The commercially available ionic liquid (IL) 1-ethyl-3-methyl imidazolium thiocyanate (Emim-scn) is used as a highly efficient precursor for the synthesis of nitrogen–sulfur-co-doped carbons. Mixtures with the ILs 1-ethyl-3-methyl-imidazolium dicyanamide (Emim-dca) and 1-butyl-3-methyl-pyridinium dicyanamide (Bmp-dca)…
An innovative biopolymer composite electrolyte for dye-sensitized solar cells (DSSCs), obtained by quasi-solidifying an indigenous liquid electrolyte containing supporting salts and I3−/I− redox couple with a mixture of polyethylene oxide (PEO) and carboxymethyl cellulose sodium salt (CMC) is proposed. This is the fir…
A dinuclear alkynylplatinum(II) terpyridine complex containing an amphiphilic binaphthol bridge was designed and synthesized, and was shown to display cylindrical columnar assemblies in aqueous acetonitrile solutions, presumably mediated by the Pt⋯Pt and π–π stacking interactions. The length of the binaphthol bridge w…
Porous vaterite containers of 400 nm size are studied with respect to intracellular drug delivery applications. A generic crystal phase transition from vaterite to calcite serves as a novel payload release mechanism, which reveals a delayed burst-release. This will permit control of the pharmacokinetics allowing for a…
Bulk-synthesized silicon carbide, hitherto considered inactive for electrochemical lithium insertion, is demonstrated as a potential high-capacity, long-cycling anode material for lithium-ion batteries. In this study, we show that cubic (3C polytype) nano SiC, prepared by a chemical vapour deposition (CVD) method, del…
Development of a photocatalyst with wide visible light absorption is of vital importance in solar-chemical energy conversion. In this work, we introduce a new nitrogen-doped layered oxide, Sr5Ta4O15−xNx, which exhibits a significantly extended absorption edge compared with the undoped oxide Sr5Ta4O15. The extension of…
A petal-like nanostructured Li4Ti5O12-TiO2 composite has been synthesized by a novel, simple, ultrafast, low-cost, and environmentally benign process and investigated as an anode material for Li-ion batteries. This work introduces a special solution system not slurry to synthesize a spherical flower-like Li4Ti5O12-TiO…
Redox-inactive metal ions that function as Lewis acids play pivotal roles in modulating reactivities of oxygen-containing metal complexes in a variety of biological and biomimetic reactions, including dioxygen activation/formation and functionalization of organic substrates. Mononuclear nonheme iron(III)–peroxo specie…
Novel "soft" microbubbles have been fabricated to show outstanding ultrasound imaging capability, and triggered CuS nanoparticles delivery through ultrasound-targeted microbubble destruction for efficient photothermal ablation of cancer cells.
A salophen cobalt(II) complex enables water oxidation at neutral pH in photoactivated sacrificial cycles under visible light, thus confirming the high appeal of earth abundant single site catalysis for artificial photosynthesis.
We report the formation and extraordinary Li-storage properties of TiO2 hollow nanofibers by co-axial electrospinning in both the half-cell and full-cell configurations. Li-insertion properties are first evaluated as anodes in the half-cell configuration (Li/TiO2 hollow nanofibers) and we found that reversible inserti…
In this paper, we show that ultrasound technology is a powerful tool for enhancing the reactivity of microcrystalline cellulose (MCC) in the presence of a solid acid catalyst. The effects of sonication on the MCC structure were studied using different characterization methods. In particular we found that pretreatment…
We report the innovative development of a double layered photoanode made of hierarchical TiO2 flowers (HTFs) as the overlayer and TiO2 nanoparticles (TNPs) as the underlayer, for dye-sensitized solar cells (DSSCs). They were prepared via a mild and simple one-step hydrothermal reaction of TiO2 nanoparticles/FTO glass…