Integration of an Inorganic Semiconductor with a Metal–Organic Framework: A Platform for Enhanced Gaseous Photocatalytic Reactions

Li, Rui; Hu, Jiahua; Deng, Mingsen; Wang, Helin; Wang, Xijun; Hu, Yingli; Jiang, Hai‐Long; Jiang, Jun; Zhang, Qun; Xie, Yi; Xiong, Yujie

doi:10.1002/adma.201400428

Cited by 413 publications

(273 citation statements)

References 29 publications

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“…For instance, by employing hydrofluoric acid as a capping agent (CA), H. G. Yang et al34 were the first to obtain uniform anatase TiO 2 single crystals with a high percentage (47%) of highly reactive {001} facets, which possessed promising applications in sensors, solar cells and photocatalysis. Besides the various routes for the synthesis of NCs, several novel strategies have recently exploded by carving, modifying, or transforming the original NCs that greatly improve the catalysis and sensing performances 6, 27, 30, 33, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52. For example, X. Chen et al51 disordered the surface layers of nanophase TiO 2 by hydrogenation.…”

Section: Introductionmentioning

confidence: 99%

Facet‐Controlled Synthetic Strategy of Cu₂O‐Based Crystals for Catalysis and Sensing

2015

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Shape‐dependent catalysis and sensing behaviours are primarily focused on nanocrystals enclosed by low‐index facets, especially the three basic facets ({100}, {111}, and {110}). Several novel strategies have recently exploded by tailoring the original nanocrystals to greatly improve the catalysis and sensing performances. In this Review, we firstly introduce the synthesis of a variety of Cu2O nanocrystals, including the three basic Cu2O nanocrystals (cubes, octahedra and rhombic dodecahedra, enclosed by the {100}, {111}, and {110} facets, respectively), and Cu2O nanocrystals enclosed by high‐index planes. We then discuss in detail the three main facet‐controlled synthetic strategies (deposition, etching and templating) to fabricate Cu2O‐based nanocrystals with heterogeneous, etched, or hollow structures, including a number of important concepts involved in those facet‐controlled routes, such as the selective adsorption of capping agents for protecting special facets, and the impacts of surface energy and active sites on reaction activity trends. Finally, we highlight the facet‐dependent properties of the Cu2O and Cu2O‐based nanocrystals for applications in photocatalysis, gas catalysis, organocatalysis and sensing, as well as the relationship between their structures and properties. We also summarize and comment upon future facet‐related directions.

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Section: Introductionmentioning

confidence: 99%

Facet‐Controlled Synthetic Strategy of Cu₂O‐Based Crystals for Catalysis and Sensing

2015

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“…The activity of various photocatalyts toward the light‐assisted reduction of CO 2 to useful fuels has been studied 3, 4, 5, 6. Among different approaches that convert CO 2 into useful products, gas‐phase light‐assisted reduction of CO 2 is a practical option, since gas‐phase processes can be easily scaled and integrated with existing chemical and petrochemical industry infrastructure 7.…”

Section: Introductionmentioning

confidence: 99%

Visible and Near‐Infrared Photothermal Catalyzed Hydrogenation of Gaseous CO₂ over Nanostructured Pd@Nb₂O₅

et al. 2016

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The reverse water gas shift (RWGS) reaction driven by Nb2O5 nanorod‐supported Pd nanocrystals without external heating using visible and near infrared (NIR) light is demonstrated. By measuring the dependence of the RWGS reaction rates on the intensity and spectral power distribution of filtered light incident onto the nanostructured Pd@Nb2O5 catalyst, it is determined that the RWGS reaction is activated photothermally. That is the RWGS reaction is initiated by heat generated from thermalization of charge carriers in the Pd nanocrystals that are excited by interband and intraband absorption of visible and NIR light. Taking advantage of this photothermal effect, a visible and NIR responsive Pd@Nb2O5 hybrid catalyst that efficiently hydrogenates CO2 to CO at an impressive rate as high as 1.8 mmol gcat−1 h−1 is developed. The mechanism of this photothermal reaction involves H2 dissociation on Pd nanocrystals and subsequent spillover of H to the Nb2O5 nanorods whereupon adsorbed CO2 is hydrogenated to CO. This work represents a significant enhancement in our understanding of the underlying mechanism of photothermally driven CO2 reduction and will help guide the way toward the development of highly efficient catalysts that exploit the full solar spectrum to convert gas‐phase CO2 to valuable chemicals and fuels.

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“…To summarize, this ultrafast dynamics study on the proofof-concept MOF@semiconductor system [28] elucidates that the photogenerated electrons can be effectively transferred from the semiconductor to the MOF, thereby facilitating charge separation in the semiconductor and concomitantly supplying energized electrons to gas molecules adsorbed on MOF. This work enables a deeper understanding on the interface states-related dynamics and hence opens a new window to implementing MOF structures in the design of hybrid photocatalysts for gaseous reactions.…”

Section: Mof@tiomentioning

confidence: 99%

“…In a recent work by Li et al [28] , a proof-of-concept MOF@TiO 2 core-shell structure was designed and fabricated, in which the MOF unit is Cu 3 (BTC) 2 (BTC denotes benzene-1,3,5-tricarboxylate). TiO 2 is known as an inorganic semiconductor with photocatalytic activity for converting CO 2 to CH 4 (with the aid of H 2 O), while Cu 3 (BTC) 2 has been proven an excellent material for CO 2 storage.…”

Section: Mof@tiomentioning

confidence: 99%

Probing the ultrafast dynamics in nanomaterial complex systems by femtosecond transient absorption spectroscopy

Zhang

Luo

2016

High Pow Laser Sci Eng

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Over the past decade the integration of ultrafast spectroscopy with nanoscience has greatly propelled the development of nanoscience, as the key information gleaned from the mechanistic studies with the assistance of ultrafast spectroscopy enables a deeper understanding of the structure-function interplay and various interactions involved in the nanosystems. This mini-review presents an overview of the recent advances achieved in our ultrafast spectroscopy laboratory that address the ultrafast dynamics and related mechanisms in several representative nanomaterial complex systems by means of femtosecond time-resolved transient absorption spectroscopy. We attempt to convey instructive, consistent information regarding the important processes, pathways, dynamics, and interactions involved in the nanomaterial complex systems, most of which exhibit excellent performance in photocatalysis.

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Integration of an Inorganic Semiconductor with a Metal–Organic Framework: A Platform for Enhanced Gaseous Photocatalytic Reactions

Cited by 413 publications

References 29 publications

Facet‐Controlled Synthetic Strategy of Cu₂O‐Based Crystals for Catalysis and Sensing

Facet‐Controlled Synthetic Strategy of Cu₂O‐Based Crystals for Catalysis and Sensing

Visible and Near‐Infrared Photothermal Catalyzed Hydrogenation of Gaseous CO₂ over Nanostructured Pd@Nb₂O₅

Probing the ultrafast dynamics in nanomaterial complex systems by femtosecond transient absorption spectroscopy

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Integration of an Inorganic Semiconductor with a Metal–Organic Framework: A Platform for Enhanced Gaseous Photocatalytic Reactions

Cited by 413 publications

References 29 publications

Facet‐Controlled Synthetic Strategy of Cu2O‐Based Crystals for Catalysis and Sensing

Facet‐Controlled Synthetic Strategy of Cu2O‐Based Crystals for Catalysis and Sensing

Visible and Near‐Infrared Photothermal Catalyzed Hydrogenation of Gaseous CO2 over Nanostructured Pd@Nb2O5

Probing the ultrafast dynamics in nanomaterial complex systems by femtosecond transient absorption spectroscopy

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Facet‐Controlled Synthetic Strategy of Cu₂O‐Based Crystals for Catalysis and Sensing

Facet‐Controlled Synthetic Strategy of Cu₂O‐Based Crystals for Catalysis and Sensing

Visible and Near‐Infrared Photothermal Catalyzed Hydrogenation of Gaseous CO₂ over Nanostructured Pd@Nb₂O₅