The Experts below are selected from a list of 303 Experts worldwide ranked by ideXlab platform
N Pradeep D Singh - One of the best experts on this subject based on the ideXlab platform.
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vis nir light driven mild and Clean Synthesis of disulfides in the presence of cu2 oh po4 under aerobic conditions
ChemInform, 2015Co-Authors: Sk Sheriff Shah, S Karthik, N Pradeep D SinghAbstract:Irradiation with NIR light (λ = 828 nm) gives somewhat lower yields while irradiation with visible light in absence of any solvents shows a significant decline in yields.
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vis nir light driven mild and Clean Synthesis of disulfides in the presence of cu2 oh po4 under aerobic conditions
RSC Advances, 2015Co-Authors: Sk Sheriff Shah, S Karthik, N Pradeep D SinghAbstract:A highly efficient one-pot strategy has been developed for the Synthesis of disulfide in the presence of air under the irradiation of Vis/NIR light. Copper hydroxyphosphate (CHP) Cu2(OH)PO4, has been used as a Vis/NIR active photocatalyst. Disulfide forms on the surface of the catalyst by a radical mechanism. The protocol is useful for solvent free disulfide Synthesis from a variety of thiols.
Sk Sheriff Shah - One of the best experts on this subject based on the ideXlab platform.
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vis nir light driven mild and Clean Synthesis of disulfides in the presence of cu2 oh po4 under aerobic conditions
ChemInform, 2015Co-Authors: Sk Sheriff Shah, S Karthik, N Pradeep D SinghAbstract:Irradiation with NIR light (λ = 828 nm) gives somewhat lower yields while irradiation with visible light in absence of any solvents shows a significant decline in yields.
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vis nir light driven mild and Clean Synthesis of disulfides in the presence of cu2 oh po4 under aerobic conditions
RSC Advances, 2015Co-Authors: Sk Sheriff Shah, S Karthik, N Pradeep D SinghAbstract:A highly efficient one-pot strategy has been developed for the Synthesis of disulfide in the presence of air under the irradiation of Vis/NIR light. Copper hydroxyphosphate (CHP) Cu2(OH)PO4, has been used as a Vis/NIR active photocatalyst. Disulfide forms on the surface of the catalyst by a radical mechanism. The protocol is useful for solvent free disulfide Synthesis from a variety of thiols.
S Karthik - One of the best experts on this subject based on the ideXlab platform.
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vis nir light driven mild and Clean Synthesis of disulfides in the presence of cu2 oh po4 under aerobic conditions
ChemInform, 2015Co-Authors: Sk Sheriff Shah, S Karthik, N Pradeep D SinghAbstract:Irradiation with NIR light (λ = 828 nm) gives somewhat lower yields while irradiation with visible light in absence of any solvents shows a significant decline in yields.
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vis nir light driven mild and Clean Synthesis of disulfides in the presence of cu2 oh po4 under aerobic conditions
RSC Advances, 2015Co-Authors: Sk Sheriff Shah, S Karthik, N Pradeep D SinghAbstract:A highly efficient one-pot strategy has been developed for the Synthesis of disulfide in the presence of air under the irradiation of Vis/NIR light. Copper hydroxyphosphate (CHP) Cu2(OH)PO4, has been used as a Vis/NIR active photocatalyst. Disulfide forms on the surface of the catalyst by a radical mechanism. The protocol is useful for solvent free disulfide Synthesis from a variety of thiols.
Giovanni Sartori - One of the best experts on this subject based on the ideXlab platform.
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Clean Synthesis in water part 2 uncatalysed condensation reaction of meldrum s acid and aldehydes
Tetrahedron Letters, 2001Co-Authors: Franca Bigi, Raimondo Maggi, Silvia Carloni, Leonetto Ferrari, Alessandro Mazzacani, Giovanni SartoriAbstract:Abstract The environment-friendly condensation of Meldrum's acid and aromatic, heteroaromatic and hindered aliphatic aldehydes is performed carrying out the reaction in water at 75°C for 2 h, avoiding the addition of any catalyst.
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Clean Synthesis in water uncatalysed preparation of ylidenemalononitriles
Green Chemistry, 2000Co-Authors: Franca Bigi, Maria Lina Conforti, Raimondo Maggi, Annalisa Piccinno, Giovanni SartoriAbstract:A simple, efficient and environment-friendly procedure is developed for the condensation of malononitrile with aromatic, heteroaromatic and aliphatic aldehydes in water. The ylidenemalononitriles 3 are Synthesised in high yields (84–98%) and selectivities (87–98%) in distilled water at 65 °C for 1 h, avoiding the addition of any catalyst.
Hongjie Zhang - One of the best experts on this subject based on the ideXlab platform.
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γ al2o3 supported pd ceo2 core shell nanospheres salting out assisted growth and self assembly and their catalytic performance in co oxidation
Chemical Science, 2015Co-Authors: Xiao Wang, Jiangman Zhen, Junqi Li, Fan Wang, Hongjie ZhangAbstract:In this paper, we have successfully demonstrated the Clean Synthesis of high-quality Pd@CeO2 core@shell nanospheres with tunable Pd core sizes in water, and furthermore loaded the as-obtained Pd@CeO2 products on commercial γ-Al2O3via electrostatic interaction. KBr here plays two key roles in inducing the growth and self-assembly of Pd@CeO2 core@shell nanospheres. First, Br− ions can retard the reduction of Pd2+ ions via the formation of the more stable complex of [PdBr4]2− so as to tune the size of Pd cores. Second, it greatly decreases the colloidal stability, and hence the surface polarity-weakened Pd and CeO2 NPs have to spontaneously self-assemble into more stable and ordered structures. Among different-sized Pd samples, the as-obtained 8 nm-Pd@CeO2/Al2O3 one exhibits the best performance in catalytic CO oxidation, which can catalyze 100% CO conversion into CO2 at 95 °C, which is much lower than the previously reported CeO2-encapsulated Pd samples.
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Clean Synthesis of cu2o ceo2 core shell nanocubes with highly active interface
Npg Asia Materials, 2015Co-Authors: Xiao Wang, Dapeng Liu, Jiangman Zhen, Hongjie ZhangAbstract:The fabrication of multi-component hybrid nanostructures is of vital importance because their two-phase interface could provide a rich environment for redox reactions, which are beneficial for enhancing catalytic performance. Inspired by the above consideration, strongly coupled Cu2O@CeO2 core@shell nanostructures have been successfully prepared via a non-organic and Clean aqueous route without using any organic additive. In this process, an auto-catalytic redox reaction occurred on the two-phase interface, followed by a triggered self-assembly process. Additionally, the size, morphology and composition of the as-obtained nanostructures can be tuned well by varying the reaction temperature, as well as the species and the amount of Cu precursors. The catalytic tests for peroxidase-like activity and CO oxidation have been conducted in detail, and the results confirm a strong synergistic effect at the interface sites between the CeO2 and Cu2O components.
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pt ceo2 multicore shell self assembled nanospheres Clean Synthesis structure optimization and catalytic applications
Journal of the American Chemical Society, 2013Co-Authors: Xiao Wang, Dapeng Liu, Shuyan Song, Hongjie ZhangAbstract:A Clean nonorganic synthetic method has been developed to fabricate the uniform pomegranate-like Pt@CeO2 multicore@shell nanospheres in a large scale. Under the effective protection of Ar atmosphere the redox reaction just simply happened between Ce(NO3)3 and K2PtCl4 in an alkaline aqueous solution, in which no other reducing agents or surfactants were added. The as-obtained nanospheres exhibited excellent structure stability even being calcined at 600 °C for 5 h. Moreover, the as-obtained Pt@CeO2 multicore@shell nanospheres can be further supported on reduced graphene oxide (RGO) to form heterogeneous nanocatalyst, which has been successfully applied in the chemical reduction reaction of nitrophenol (NP) by ammonia borane (NH3BH3, dubbed as AB) instead of hazardous H2 or NaBH4.