02188nas a2200277 4500008004100000022001400041245013600055210006900191260011100260300001200371490000600383520117200389653001801561653001801579653000901597653001301606653001801619653001101637100001701648700002401665700002701689700003101716700002001747700001901767856012401786 2012 eng d a1573-413700aGreen approach towards size controlled synthesis of biocompatible antibacterial metal nanoparticles in aqueous phase using lysozyme0 aGreen approach towards size controlled synthesis of biocompatibl aEXECUTIVE STE Y-2, PO BOX 7917, SAIF ZONE, 1200 BR SHARJAH, U ARAB EMIRATESbBENTHAM SCIENCE PUBL LTDcFEB a130-1400 v83 a

Inspired by array of proteins present in nature, we choose lysozyme (hen egg protein) as a model system to synthesize nanoparticles of noble metals to understand the mechanism of interaction as well as to use them for potential applications such as potent antibacterial agents. Lysozyme is a very well studied biomolecule containing aromatic amino acids like tryptophan and tyrosine. Tyrosine has phenoxy group which is considered to be responsible for interacting with the metal ions. Lysozyme can be suitably modified by treatment with N-bromosuccinimide/N-acetylimidazole to obtain tight control over size distribution of nanoparticles. Here we report the direct synthesis of nanocrystals of gold and silver at controlled pH and light conditions without using any known reducing agents. Out of these, synthesis of gold nanoparticles is assisted by the presence of low concentration of Ag+ ions through the galvanic exchange. It is remarkable to note that the structure of protein is not changed drastically as seen by the FTIR studies. As-synthesized lysozyme capped nanoparticles prepared by this method are biocompatible and retain antibacterial property.

10aAntibacterial10aBiocompatible10aGold10alysozyme10aNanoparticles10aSilver1 aKumar, Umesh1 aRanjan, Amaresh, K.1 aSharan, Chandrashekhar1 aHardikar, Anandwardhan, A.1 aPundle, Archana1 aPoddar, Pankaj uhttps://library.ncl.res.in/content/green-approach-towards-size-controlled-synthesis-biocompatible-antibacterial-metal-001746nas a2200157 4500008004100000022001400041245017100055210006900226260011000295300001600405490000600421520100600427100001701433700001901450856011901469 2013 eng d a2046-206900aGrowth of oriented single crystalline La-doped TiO2 nanorod arrays electrode and investigation of optoelectronic properties for enhanced photoelectrochemical activity0 aGrowth of oriented single crystalline Ladoped TiO2 nanorod array aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcAPR a10363-103690 v33 a

Fabrication of single crystalline, oriented one-dimensional (1D) rods or wires of titania on transparent conducting oxide (TCO) substrates have enormous significance in the area of photoelectrochemical research owning to their unique optoelectronic properties. It is possible to modify the electrical conductivity and optoelectronic properties of titania by intentional inclusion of atomic impurity in the material. Here for the first time, we have doped lanthanum homogeneously in TiO2 nanorod arrays. The homogeneous distribution of lanthanum in titania lattice is confirmed by scanning transmission electron microscopy (STEM) elemental mapping and line scanning analysis. After doping with lanthanum, there is a negative shift of the flat-band potential of the TiO2 nanorods and the charge carrier density of the nanorods is also improved. The energy-conversion efficiency of a dye-sensitized solar cell based on 4 mol% La-doped nanorods is increased about 21% compared with the undoped one.

1 aSadhu, Subha1 aPoddar, Pankaj uhttps://library.ncl.res.in/content/growth-oriented-single-crystalline-la-doped-tio2-nanorod-arrays-electrode-and-001399nas a2200169 4500008004100000245007100041210006900112260010900181300001200290490001000302520074200312100001901054700001901073700001801092700002401110856009501134 2017 eng d00aGrowth of flower-like patterns of TiO2 nanorods over FTO substrate0 aGrowth of flowerlike patterns of TiO2 nanorods over FTO substrat a Univ Delhi, New Delhi, IndiabTaylor & Francis Group 2&4 Park Square Milton Park Abingdon OX14 4RNcNOV a166-1710 v 184 3 a

Nanostructures such as nanoparticles, nanowires, nanorods, nanotubes have attracted great interest with the understanding of shape and size dependence in the electronic and sensing properties. This work demonstrates growth and characterization of one-dimensional nanorods of titanium-dioxide (TiO2) on the fluorine doped tin oxide (FTO) substrate by using hydrothermal method. Field effect scanning electron microscopy shows flower-like morphology, and energy-dispersive X-ray spectroscopy confirms the presence of Ti and O. The X-ray diffraction peaks agree well with the JCPDS data. Initially, the 1D nanorods are formed and high concentration of precursor assists evolution of the short branches to form flower-like structures.

1 aIssar, Sheetal1 aPoddar, Pankaj1 aMehra, N., C.1 aMahapatro, Ajit, K. uhttps://library.ncl.res.in/content/growth-flower-patterns-tio2-nanorods-over-fto-substrate