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Light Absorbers and Catalysts for So...

Kornienko, Nikolay I.

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Light Absorbers and Catalysts for Solar to Fuel Conversion.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Light Absorbers and Catalysts for Solar to Fuel Conversion./
作者:	Kornienko, Nikolay I.
面頁冊數:	112 p.
附註:	Source: Dissertation Abstracts International, Volume: 78-03(E), Section: B.
Contained By:	Dissertation Abstracts International78-03B(E).
標題:	Chemistry. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10150818
ISBN:	9781369055832

Light Absorbers and Catalysts for Solar to Fuel Conversion.
Kornienko, Nikolay I.

Light Absorbers and Catalysts for Solar to Fuel Conversion. - 112 p.

Source: Dissertation Abstracts International, Volume: 78-03(E), Section: B.

Thesis (Ph.D.)--University of California, Berkeley, 2016.

Increasing fossil fuel consumption and the resulting consequences to the environment has propelled research into means of utilizing alternative, clean energy sources. Solar power is among the most promising of renewable energy sources but must be converted into an energy dense medium such as chemical bonds to render it useful for transport and energy storage. Photoelectrochemistry (PEC), the splitting of water into oxygen and hydrogen fuel or reducing CO 2 to hydrocarbon fuels via sunlight is a promising approach towards this goal.

ISBN: 9781369055832Subjects--Topical Terms:

516420
Chemistry.

Light Absorbers and Catalysts for Solar to Fuel Conversion.
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245 1 0 $a Light Absorbers and Catalysts for Solar to Fuel Conversion.
300 $a 112 p.
500 $a Source: Dissertation Abstracts International, Volume: 78-03(E), Section: B.
500 $a Adviser: Peidong Yang.
502 $a Thesis (Ph.D.)--University of California, Berkeley, 2016.
520 $a Increasing fossil fuel consumption and the resulting consequences to the environment has propelled research into means of utilizing alternative, clean energy sources. Solar power is among the most promising of renewable energy sources but must be converted into an energy dense medium such as chemical bonds to render it useful for transport and energy storage. Photoelectrochemistry (PEC), the splitting of water into oxygen and hydrogen fuel or reducing CO 2 to hydrocarbon fuels via sunlight is a promising approach towards this goal.
520 $a Photoelectrochemical systems are comprised of several components, including light absorbers and catalysts. These parts must all synergistically function in a working device. Therefore, the continual development of each component is crucial for the overall goal. For PEC systems to be practical for large scale use, the must be efficient, stable, and composed of cost effective components. To this end, my work focused on the development of light absorbing and catalyst components of PEC solar to fuel converting systems.
520 $a In the direction of light absorbers, I focused of utilizing Indium Phosphide (InP) nanowires (NWs) as photocathodes. I first developed synthetic techniques for InP NW solution phase and vapor phase growth. Next, I developed light absorbing photocathodes from my InP NWs towards PEC water splitting cells.
520 $a I studied cobalt sulfide (CoSx) as an earth abundant catalyst for the reductive hydrogen evolution half reaction. Using in situ spectroscopic techniques, I elucidated the active structure of this catalyst and offered clues to its high activity.
520 $a In addition to hydrogen evolution catalysts, I established a new generation of earth abundant catalysts for CO2 reduction to CO fuel/chemical feedstock. I first worked with molecularly tunable homogeneous catalysts that exhibited high selectivity for CO2 reduction in non-aqueous media. Next, in order to retain molecular tunability while achieving stability and efficiency in aqueous solvents, I aimed to heterogenize a class of molecular porphyrin catalysts into a 3D mesoscopic porous catalytic structure in the form of a metal-organic framework (MOF). To do so, I initially developed a growth for thin film MOFs that were embedded with catalytic groups in their linkers. Next, I utilized these thin film MOFs grown on conductive substrates and functionalized with cobalt porphyrin units as 3D porous CO2 reduction catalysts. This new class of catalyst exhibited high efficiency, selectivity, and stability in neutral pH aqueous electrolytes.
520 $a Finally, as a last chapter of my work, I explored hybrid inorganic/biological CO2 reduction pathways. Specifically, I used time-resolved spectroscopic and biochemical techniques to investigate charge transfer pathways from light absorber to CO2-derived acetate in acetogenic self-sensitized bacteria.
590 $a School code: 0028.
650 4 $a Chemistry. $3 516420
650 4 $a Nanoscience. $3 587832
650 4 $a Materials science. $3 543314
690 $a 0485
690 $a 0565
690 $a 0794
710 2 $a University of California, Berkeley. $b Chemistry. $3 1674000
773 0 $t Dissertation Abstracts International $g 78-03B(E).
790 $a 0028
791 $a Ph.D.
792 $a 2016
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10150818