02902nas a2200169   4500008004100000020002000041022002000061245006700081210006600148260001400214300001200228520234800240100001302588700001502601700001902616856009702635       2017                        eng d  a978-148224595-0  a978-148224596-700aMolecular tools for controlling nanoparticle size/morphologies0 aMolecular tools for controlling nanoparticle sizemorphologies  bCRC Press  a189-2123 aThe preparation of nanoparticles (especially those of noble metals) predates the coinage of the term nano itself by several centuries. The earliest example of the preparation of nanoparticles has been linked to Roman artisans who created colored glass by probably mixing gold chloride and other salts of noble metals while making glass. Many artistic marvels such as the Lycurgus cup and the glass panels in many European cathedrals were created by this simple procedure. Furthermore, many believe that medicinal preparation such as “aurum potabile” and formulations injected for treating rheumatic arthritis were made of colloidal gold. Several people such as the fourteenth-century Bolognese painters, the alchemists Paracelsus, Andreus Cassius, and Johannes Kunckel are all believed to have made the colloidal form of gold, which is the most studied form among the metallic nanoparticles. However, none of these methods of preparations or people were really interested to see in what form the metals existed in composite/solution or whether these existed 190as small (“nano”) particles. Actually, it was Michael Faraday who first conjectured that the ruby red color imparted to the glass/ceramics could be due to the reduction of gold salts to metallic state. 1 He in fact prepared a “sol” of gold by reacting a gold chloride solution with red phosphorous, thus causing the reduction of gold (III) ions to metallic gold. He was also the first person who inferred that the color imparted to the glass/ceramics could be due to the existence of gold in a “finely divided metallic state.” Several systematic studies by Richard Adolf Zsigmondy, Theodor Svedberg, and Gustav Mie 2-5 on gold nanoparticles followed. However, the preparations in all these studies have been mainly curiosity driven and practical applications, if any, have been rather limited. One of the causes for this limitation could be related to the difficult preparative procedures. This major hurdle has been crossed thanks to the pioneering works first by Turkevich et al. 6 and later by Frens 7, 8 that provided the first major breakthrough as far as the simplification of gold colloid preparation was concerned. Procedures developed by these people were also the first ones where an organic molecule, trisodium citrate, was used for nanoparticle synthesis1 aSahu, P.1 aShimpi, J.1 aPrasad, B.L.V.  uhttps://library.ncl.res.in/content/molecular-tools-controlling-nanoparticle-sizemorphologies01591nas a2200253   4500008004100000245010100041210006900142260000800211300001100219490000800230520078500238653001401023653001401037653002301051653001501074653001301089653001801102653002001120100001301140700001401153700002201167700001901189856012901208       2017                        eng d00aPreparation of MgO supported platinum nanoparticle catalyst using toluene dispersed platinum sol0 aPreparation of MgO supported platinum nanoparticle catalyst usin  cOCT  a874-910 v4183 a<p>An effective way of anchoring Pt nanoparticles on MgO using toluene dispersed platinum nanoparticles (Pt-NPs) as one of the ingredient is demonstrated. The usage of particles dispersed in toluene allows the retention of size and size distribution of preformed Pt-NPs even after deposition on MgO support with high active surface area, which is crucial for heterogeneous catalysis. The catalyst thus prepared, displayed selective hydrogenation of cinnamaldehyde to cinnamyl alcohol with high turn on frequency (TOF − 105 h−1) with respect to the total Pt content. We attribute this efficient catalytic performance to the uniform distribution and deposition of Pt on the active MgO support and its better accessible surface as evidenced by the cyclic-voltammetry results.</p>10acatalysis10aCatalysts10acyclic voltammetry10aDeposition10aMagnesia10aNanoparticles10asol-gel process1 aSeth, J.1 aNepak, D.1 aChaudhari, V., R.1 aPrasad, B.L.V.  uhttps://library.ncl.res.in/content/preparation-mgo-supported-platinum-nanoparticle-catalyst-using-toluene-dispersed-platinum