A CO<sub>2</sub> adsorption-enhanced semiconductor/metal-complex hybrid photoelectrocatalytic interface for efficient formate production

Huang, Xiaofeng; Shen, Qi; Liu, Jibo; Yang, Nianjun; Zhao, Guohua

doi:10.1039/c6ee00968a

Cited by 136 publications

(80 citation statements)

References 63 publications

(98 reference statements)

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“…For instance, ZIF-9 is shown to activate CO2 leading to positive shift in the onset potential in photoelectrochemical CO2 conversion process [10]. This is also evident using carbon aerogel as a substrate [11]. Thus we considered to design a new type of coreshell ZIF/TiO2 nanocomposites which are expected not only to make good use of the CO2 adsorption function of ZIF materials and but also to in-situ photocatalytically convert CO2 on well-studied TiO2 materials.…”

Section: Introductionmentioning

confidence: 99%

Photoreduction of CO2 on ZIF-8/TiO2 nanocomposites in a gaseous photoreactor under pressure swing

Pipelzadeh

Rudolph

Hanson

et al. 2017

Applied Catalysis B: Environmental

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# Deceased in late 20152 Graphical abstract Research Highlights1. A new type of ZIF-8/TiO2 core-shell nanocomposite is designed to facilitate not only CO2 adsorption but also its subsequent photoreduction.2. Sequential fluctuation of reactor pressure plays an important role in promoting product desorption and increasing photocatalyst activity.3. This study highlights the significance of engineering variables including mass transfer and reactor design in photocatalytic reactions. Abstract:A new type of zeolitic imidazolate framework ZIF-8/TiO2 nanocomposites was developed for photocatalytic reduction of CO2 to CH4 and CO in a newly designed photoreactor under intentionally controlled pressure swing. The ZIF-8/TiO2 core-shell structure plays an important role in the adsorption of CO2 by ZIF-8 and subsequent in-situ photocatalytic reduction on TiO2. The introduction of pressure change in the reaction system facilitates the adsorption-desorption process of CO2 and reaction products, which 3 consequently led to improved photoreduction performance. This approach highlights the importance of mass transfer and reactor design for improved photoreduction.

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Section: Introductionmentioning

confidence: 99%

Photoreduction of CO2 on ZIF-8/TiO2 nanocomposites in a gaseous photoreactor under pressure swing

Pipelzadeh

Rudolph

Hanson

et al. 2017

Applied Catalysis B: Environmental

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“…In addition, their valence and conduction band (VB and CB, respectively) edge positions should straddle the redox potentials for OER and HER to drive each half reaction (Figureàa). In principle, various chemicals can be photosynthesized if electrocatalysts and semiconductors with a proper band gap and band‐edge positions for targeted reactions exist . In this regard, numerous efforts have been also devoted to the solar conversion of CO 2 and N 2 into valuable chemicals, such as CO,, HCOOH,, CH 4 ,, and NH 3 , .…”

Section: Research Backgroundmentioning

confidence: 99%

Tailored Assembly of Molecular Water Oxidation Catalysts on Photoelectrodes for Artificial Photosynthesis

et al. 2019

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Solar‐to‐chemical energy conversion, or so‐called artificial photosynthesis, is a promising technology enabling sustainable production and use of various chemical compounds such as H2, CO, CH4, HCOOH, CH3OH, and NH3. For practical applications, it is necessary to improve the interfacial properties of light‐harvesting semiconductors through modification with proper electrocatalysts, by trying to overcome their intrinsic limitations such as rapid recombination, sluggish reaction kinetics, and photocorrosion. Compared to their heterogeneous counterparts, molecular electrocatalysts have a higher catalytic activity and more flexibility in their design/synthesis and integration with semiconducting materials. In this article, we review recent efforts on the tailored assembly of molecular electrocatalysts to address the above issues for artificial photosynthesis, especially those for oxygen evolution reactions on semiconductor photoelectrodes for photoelectrochemical water oxidation. One can expect that the strategies and methods developed for the tailored assembly and integration of molecular electrocatalysts on water oxidation photoanodes can provide insights for the design and fabrication of various forms of photosynthetic devices due to the similarity between their underlying principles.

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“…[8][9][10] However,t here are still design constraintsf or grid-scales toragea pplications. [13,14] This area is currently witnessing intense research activities [15][16][17] and it has the potential of helping to achieve the goals of energy storage and curtailment of global warming. [12] Thus, taking inspiration from nature, transformationsl eadingt ot he formation of covalentb onds can enable large-scale storage of renewablee nergy in portable forms such as fuels and chemicals, especially if the renewable energy is used to transform carbon dioxide into fuels and chemicals.…”

Section: Introductionmentioning

confidence: 99%

Electrochemistry for the Generation of Renewable Chemicals: One‐Pot Electrochemical Deoxygenation of Xylose to δ‐Valerolactone

2017

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In this study, the electrochemical conversion of xylose to δ-valerolactone via carbonyl intermediates is demonstrated. The conversion was achieved in aqueous media and at ambient conditions. This study also demonstrates that the feedstock for production of renewable chemicals and biofuels through electrochemistry can be extended to primary carbohydrate molecules. This is the first report on a one-pot electrochemical deoxygenation of xylose to δ-valerolactone.

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A CO₂ adsorption-enhanced semiconductor/metal-complex hybrid photoelectrocatalytic interface for efficient formate production

Abstract: A biomimetic interface based on molecular catalyst Ru(bpy)2dppz, photoelectrocatalyst Co3O4, and CO2 fixation substrate carbon aerogel converts CO2 to formate.

Cited by 136 publications

References 63 publications

Photoreduction of CO2 on ZIF-8/TiO2 nanocomposites in a gaseous photoreactor under pressure swing

Photoreduction of CO2 on ZIF-8/TiO2 nanocomposites in a gaseous photoreactor under pressure swing

Tailored Assembly of Molecular Water Oxidation Catalysts on Photoelectrodes for Artificial Photosynthesis

Electrochemistry for the Generation of Renewable Chemicals: One‐Pot Electrochemical Deoxygenation of Xylose to δ‐Valerolactone

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A CO2 adsorption-enhanced semiconductor/metal-complex hybrid photoelectrocatalytic interface for efficient formate production

Abstract: A biomimetic interface based on molecular catalyst Ru(bpy)2dppz, photoelectrocatalyst Co3O4, and CO2 fixation substrate carbon aerogel converts CO2 to formate.

Cited by 136 publications

References 63 publications

Photoreduction of CO2 on ZIF-8/TiO2 nanocomposites in a gaseous photoreactor under pressure swing

Photoreduction of CO2 on ZIF-8/TiO2 nanocomposites in a gaseous photoreactor under pressure swing

Tailored Assembly of Molecular Water Oxidation Catalysts on Photoelectrodes for Artificial Photosynthesis

Electrochemistry for the Generation of Renewable Chemicals: One‐Pot Electrochemical Deoxygenation of Xylose to δ‐Valerolactone

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A CO₂ adsorption-enhanced semiconductor/metal-complex hybrid photoelectrocatalytic interface for efficient formate production