02281nas a2200241   4500008004100000022001400041245010900055210006900164260011000233300001600343490000600359520132700365100002301692700002201715700002501737700002801762700002701790700002601817700002101843700002301864700002101887856013101908       2015                        eng d  a2046-206900aHierarchical CdS nanostructure by Lawesson's reagent and its enhanced photocatalytic hydrogen production0 aHierarchical CdS nanostructure by Lawessons reagent and its enha  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJAN  a13715-137210 v53 a<p>Lawesson's reagent (LR) has been effectively exploited for the synthesis of hierarchical architectures of cadmium sulphide (CdS) nanostructures for the first time. The X-ray diffractograms of the as synthesised CdS nanostructures confirm the formation of hexagonal CdS. The broadness of the XRD peaks clearly indicates the nanocrystalline nature of CdS with average crystallite size of 4 nm. A FESEM study revealed the formation of hierarchical nanostructures, whereas a TEM study showed that the hierarchical arrangement is composed of nanosized CdS particles. A band-gap i.e. 2.4 eV was derived from diffuse reflectance spectroscopy. The photoluminescence spectrum showed an emission peak at 535 and 568 nm which can be attributed to band-edge emission and surface emissions or possible metal vacancies, respectively. Considering the band-gap within the visible region, the photocatalytic hydrogen evolution performance of these CdS nanostructures was performed under visible light irradiation from hydrogen sulphide and water, respectively. Utmost hydrogen evolution i.e. 14 136 mu mol h(-1) g(-1) and 2065 mu mol h(-1) g(-1) was observed over a naked CdS nanostructure via H2S and water decomposition, respectively. The amount of hydrogen obtained by H2S splitting is much higher as compared to earlier reports.</p>1 aPandit, Vikram, U.1 aArbuj, Sudhir, S.1 aHawaldar, Ranjit, R.1 aKshirsagar, Pradnya, V.1 aDeshmukh, Amarsinh, J.1 aAmbekar, Jalindar, D.1 aMulik, Uttam, P.1 aGosavi, Suresh, W.1 aKale, Bharat, B.  uhttps://library.ncl.res.in/content/hierarchical-cds-nanostructure-lawessons-reagent-and-its-enhanced-photocatalytic-hydrogen-0