The Experts below are selected from a list of 297 Experts worldwide ranked by ideXlab platform
David B. Ingram - One of the best experts on this subject based on the ideXlab platform.
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plasmonic metal nanostructures for efficient conversion of solar to Chemical Energy
Nature Materials, 2011Co-Authors: Suljo Linic, Phillip Christopher, David B. IngramAbstract:Although heterogeneous photocatalysts for converting solar to Chemical Energy are mostly semiconductors, metallic plasmonic nanostructures have started to attract interest. Recent progress on plasmon-enhanced, water-splitting composite photocatalysts and photocatalytic reactions on the surface of plasmonic nanostructures of noble metals are now reviewed.
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Plasmonic-metal nanostructures for efficient conversion of solar to Chemical Energy
Nature Materials, 2011Co-Authors: Suljo Linic, Phillip Christopher, David B. IngramAbstract:Recent years have seen a renewed interest in the harvesting and conversion of solar Energy. Among various technologies, the direct conversion of solar to Chemical Energy using photocatalysts has received significant attention. Although heterogeneous photocatalysts are almost exclusively semiconductors, it has been demonstrated recently that plasmonic nanostructures of noble metals (mainly silver and gold) also show significant promise. Here we review recent progress in using plasmonic metallic nanostructures in the field of photocatalysis. We focus on plasmon-enhanced water splitting on composite photocatalysts containing semiconductor and plasmonic-metal building blocks, and recently reported plasmon-mediated photocatalytic reactions on plasmonic nanostructures of noble metals. We also discuss the areas where major advancements are needed to move the field of plasmon-mediated photocatalysis forward.
Martin Pumera - One of the best experts on this subject based on the ideXlab platform.
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Chemical Energy powered nano micro macromotors and the environment
Chemistry: A European Journal, 2015Co-Authors: James Guo Sheng Moo, Martin PumeraAbstract:The rise of miniaturized artificial self-powered devices, demonstrating autonomous motion, has brought in new considerations from the environmental perspective. This review addresses the interplay between these nano/micro/macromotors and the environment, recent advances, and their applications in pollution management. Such self-propelled devices are able to actuate Chemical Energy into mechanical motion in situ, adding another powerful dimension towards solving environmental problems. Use of synthetic nano/micro/macromotors has demonstrated potential in environmental remediation, both in pollutant removal and contaminant degradation, owing to motion-induced mixing. At the same time, the Chemical environment exerts influence on the locomotion of the motors. These sensitized self-powered devices demonstrate capabilities for being deployed as sensors and their chemotactic behaviors show efficacy to act as first responders towards a Chemical leakage. Thus, the notion of a self-propelling entity also entails further investigation into its inherent toxicity and possible implications as a pollutant. Future challenges and outlook of the use of these miniaturized devices are discussed, with specific regard to the fields of environmental remediation and monitoring, as we move towards their wider acceptance. We believe that these tiny machines will stand up to the task as solutions for environmental sustainability in the 21st century.
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Chemical Energy Powered Nano/Micro/Macromotors and the Environment
Chemistry: A European Journal, 2014Co-Authors: James Guo Sheng Moo, Martin PumeraAbstract:The rise of miniaturized artificial self-powered devices, demonstrating autonomous motion, has brought in new considerations from the environmental perspective. This review addresses the interplay between these nano/micro/macromotors and the environment, recent advances, and their applications in pollution management. Such self-propelled devices are able to actuate Chemical Energy into mechanical motion in situ, adding another powerful dimension towards solving environmental problems. Use of synthetic nano/micro/macromotors has demonstrated potential in environmental remediation, both in pollutant removal and contaminant degradation, owing to motion-induced mixing. At the same time, the Chemical environment exerts influence on the locomotion of the motors. These sensitized self-powered devices demonstrate capabilities for being deployed as sensors and their chemotactic behaviors show efficacy to act as first responders towards a Chemical leakage. Thus, the notion of a self-propelling entity also entails further investigation into its inherent toxicity and possible implications as a pollutant. Future challenges and outlook of the use of these miniaturized devices are discussed, with specific regard to the fields of environmental remediation and monitoring, as we move towards their wider acceptance. We believe that these tiny machines will stand up to the task as solutions for environmental sustainability in the 21st century.
Suljo Linic - One of the best experts on this subject based on the ideXlab platform.
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plasmonic metal nanostructures for efficient conversion of solar to Chemical Energy
Nature Materials, 2011Co-Authors: Suljo Linic, Phillip Christopher, David B. IngramAbstract:Although heterogeneous photocatalysts for converting solar to Chemical Energy are mostly semiconductors, metallic plasmonic nanostructures have started to attract interest. Recent progress on plasmon-enhanced, water-splitting composite photocatalysts and photocatalytic reactions on the surface of plasmonic nanostructures of noble metals are now reviewed.
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Plasmonic-metal nanostructures for efficient conversion of solar to Chemical Energy
Nature Materials, 2011Co-Authors: Suljo Linic, Phillip Christopher, David B. IngramAbstract:Recent years have seen a renewed interest in the harvesting and conversion of solar Energy. Among various technologies, the direct conversion of solar to Chemical Energy using photocatalysts has received significant attention. Although heterogeneous photocatalysts are almost exclusively semiconductors, it has been demonstrated recently that plasmonic nanostructures of noble metals (mainly silver and gold) also show significant promise. Here we review recent progress in using plasmonic metallic nanostructures in the field of photocatalysis. We focus on plasmon-enhanced water splitting on composite photocatalysts containing semiconductor and plasmonic-metal building blocks, and recently reported plasmon-mediated photocatalytic reactions on plasmonic nanostructures of noble metals. We also discuss the areas where major advancements are needed to move the field of plasmon-mediated photocatalysis forward.
Yutaka Tamaura - One of the best experts on this subject based on the ideXlab platform.
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Conversion of Concentrated Solar Thermal Energy into Chemical Energy
AMBIO, 2012Co-Authors: Yutaka TamauraAbstract:When a concentrated solar beam is irradiated to the ceramics such as Ni-ferrite, the high-Energy flux in the range of 1500–2500 kW/m^2 is absorbed by an excess Frenkel defect formation. This non-equilibrium state defect is generated not by heating at a low heating-rate (30 K/min), but by irradiating high flux Energy of concentrated solar beam rapidly at a high heating rate (200 K/min). The defect can be spontaneously converted to Chemical Energy of a cation-excess spinel structure (reduced-oxide form) at the temperature around 1773 K. Thus, the O_2 releasing reaction (α-O_2 releasing reaction) proceeds in two-steps; (1) high flux Energy of concentrated solar beam absorption by formation of the non-equilibrium Frenkel defect and (2) the O_2 gas formation from the O^2− in the Frenkel defect even in air atmosphere. The 2nd step proceeds without the solar radiation. We may say that the 1st step is light reaction, and 2nd step, dark reaction, just like in photosynthesis process.
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Coal gasification with CO2 in molten salt for solar thermal/Chemical Energy conversion
Energy, 2000Co-Authors: Jun Matsunami, S. Yoshida, Yoshinori Oku, Osamu Yokota, Yutaka Tamaura, Mitsunobu KitamuraAbstract:Coal gasification with CO2 in Na2CO3–K2CO3 molten salt that was used as thermal storage for gas/solid heterogeneous reaction was studied to apply this system for solar thermal/Chemical Energy conversion. The reactions were performed at 1173 K under various CO2 flow rates, weights of the molten salt and Na2CO3/K2CO3 ratios. The CO2 gas consumption rate increased with increasing CO2 flow rate, however, the conversion efficiency of CO2 to CO was decreased. As the weight of the molten salt increased, the rate of the gasification reaction was decreased. The maximum conversion efficiency of CO2 to CO under the experimental conditions reached 71% at the CO2 flow rate of 310 μmol/s. Thus 37 J of the solar thermal Energy can be converted into Chemical Energy per second by the endothermic process of the Boudouard reaction (C+CO2=2CO−169.16 kJ (at 1150 K); coal=10 g), when this gasification reaction would be performed by using concentrated solar heat.
James Guo Sheng Moo - One of the best experts on this subject based on the ideXlab platform.
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Chemical Energy powered nano micro macromotors and the environment
Chemistry: A European Journal, 2015Co-Authors: James Guo Sheng Moo, Martin PumeraAbstract:The rise of miniaturized artificial self-powered devices, demonstrating autonomous motion, has brought in new considerations from the environmental perspective. This review addresses the interplay between these nano/micro/macromotors and the environment, recent advances, and their applications in pollution management. Such self-propelled devices are able to actuate Chemical Energy into mechanical motion in situ, adding another powerful dimension towards solving environmental problems. Use of synthetic nano/micro/macromotors has demonstrated potential in environmental remediation, both in pollutant removal and contaminant degradation, owing to motion-induced mixing. At the same time, the Chemical environment exerts influence on the locomotion of the motors. These sensitized self-powered devices demonstrate capabilities for being deployed as sensors and their chemotactic behaviors show efficacy to act as first responders towards a Chemical leakage. Thus, the notion of a self-propelling entity also entails further investigation into its inherent toxicity and possible implications as a pollutant. Future challenges and outlook of the use of these miniaturized devices are discussed, with specific regard to the fields of environmental remediation and monitoring, as we move towards their wider acceptance. We believe that these tiny machines will stand up to the task as solutions for environmental sustainability in the 21st century.
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Chemical Energy Powered Nano/Micro/Macromotors and the Environment
Chemistry: A European Journal, 2014Co-Authors: James Guo Sheng Moo, Martin PumeraAbstract:The rise of miniaturized artificial self-powered devices, demonstrating autonomous motion, has brought in new considerations from the environmental perspective. This review addresses the interplay between these nano/micro/macromotors and the environment, recent advances, and their applications in pollution management. Such self-propelled devices are able to actuate Chemical Energy into mechanical motion in situ, adding another powerful dimension towards solving environmental problems. Use of synthetic nano/micro/macromotors has demonstrated potential in environmental remediation, both in pollutant removal and contaminant degradation, owing to motion-induced mixing. At the same time, the Chemical environment exerts influence on the locomotion of the motors. These sensitized self-powered devices demonstrate capabilities for being deployed as sensors and their chemotactic behaviors show efficacy to act as first responders towards a Chemical leakage. Thus, the notion of a self-propelling entity also entails further investigation into its inherent toxicity and possible implications as a pollutant. Future challenges and outlook of the use of these miniaturized devices are discussed, with specific regard to the fields of environmental remediation and monitoring, as we move towards their wider acceptance. We believe that these tiny machines will stand up to the task as solutions for environmental sustainability in the 21st century.