01137nas a2200193   4500008004100000022001400041245015700055210006900212260011000281300001600391490000700407520026900414100002500683700002700708700002800735700002800763700002400791856012800815       2014                        eng d  a1359-734500aLayer-separated distribution of nitrogen doped graphene by wrapping on carbon nitride tetrapods for enhanced oxygen reduction reactions in acidic medium0 aLayerseparated distribution of nitrogen doped graphene by wrappi  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcSEP  a13769-137720 v503 a<p>Layer-separated 3D nitrogen doped graphene (NG) with an accessible interstitial surface and modulated activity characteristics for oxygen reduction in acidic medium could be prepared by wrapping NG sheets on in situ generated carbon nitride (CNx) tetrapods.</p>1 aUnni, SreeKuttan, M.1 aIllathvalappil, Rajith1 aGangadharan, Pranav, K.1 aBhange, Siddheshwar, N.1 aKurungot, Sreekumar  uhttps://library.ncl.res.in/content/layer-separated-distribution-nitrogen-doped-graphene-wrapping-carbon-nitride-tetrapods-002551nas a2200169   4500008004100000022001400041245018300055210006900238260011000307300001600417490000600433520174300439100002702182700002502209700002402234856012302258       2015                        eng d  a2040-336400aLayer-separated MoS2 bearing reduced graphene oxide formed by an in situ intercalation-cum-anchoring route mediated by Co(OH)(2) as a Pt-free electrocatalyst for oxygen reduction0 aLayerseparated MoS2 bearing reduced graphene oxide formed by an   aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcSEP  a16729-167360 v73 a<p>A significant improvement in the electrochemical oxygen reduction reaction (ORR) activity of molybdenum sulphide (MoS2) could be accomplished by its layer separated dispersion on graphene mediated by cobalt hydroxide (Co(OH)(2)) through a hydrothermal process (Co(OH)(2)-MoS2/rGO). The activity make-over in this case is found to be originated from a controlled interplay of the favourable modulations achieved in terms of electrical conductivity, more exposure of the edge planes of MoS2 and a promotional role played by the coexistence of Co(OH)(2) in the proximity of MoS2. Co(OH)(2)-MoS2/rGO displays an oxygen reduction onset potential of 0.855 V and a half wave potential (E-1/2) of 0.731 V vs. RHE in 0.1 M KOH solution, which are much higher than those of the corresponding values (0.708 and 0.349 V, respectively) displayed by the as synthesized pristine MoS2 (P-MoS2) under identical experimental conditions. The Tafel slope corresponding to oxygen reduction for Co(OH)(2)-MoS2/rGO is estimated to be 63 mV dec(-1) compared to 68 mV dec(-1) displayed by the state-of-the-art Pt/C catalyst. The estimated number of electrons transferred during oxygen reduction for Co(OH)(2)-MoS2/rGO is in the range of 3.2-3.6 in the potential range of 0.77 V to 0.07 V, which again stands out as valid evidence on the much favourable mode of oxygen reduction accomplished by the system compared to its pristine counterpart. Overall, the present study, thus, demonstrates a viable strategy of tackling the inherent limitations, such as low electrical conductivity and limited access to the active sites, faced by the layered structures like MoS2 to position them among the group of potential Pt-free electrocatalysts for oxygen reduction.</p>1 aIllathvalappil, Rajith1 aUnni, SreeKuttan, M.1 aKurungot, Sreekumar  uhttps://library.ncl.res.in/content/layer-separated-mos2-bearing-reduced-graphene-oxide-formed-situ-intercalation-cum-0