Intermarriage of Halide Perovskites and Metal‐Organic Framework Crystals

Hou, Jingwei; Wang, Zhiliang; Chen, Peng; Chen, Vicki; Cheetham, Anthony K.; Wang, Lianzhou

doi:10.1002/anie.202006956

Cited by 89 publications

(58 citation statements)

References 137 publications

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“…This entity, the co‐catalyst, can be a different semiconductor or metallic nanoparticles. Intriguing recent developments look, for instance, at MOF/perovskite heterojunctions [49] . The catalysis is then performed on the surface of the co‐catalyst; the aim: a better performance than that of the MOF photocatalyst alone [50, 51] …”

Section: Band Alignmentmentioning

confidence: 99%

Metal–Organic Frameworks: Molecules or Semiconductors in Photocatalysis?

2021

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In the realm of solids, metal–organic frameworks (MOFs) offer unique possibilities for the rational engineering of tailored physical properties. These derive from the modular, molecular make‐up of MOFs, which allows for the selection and modification of the organic and inorganic building units that construct them. The adaptable properties make MOFs interesting materials for photocatalysis, an area of increasing significance. But the molecular and porous nature of MOFs leaves the field, in some areas, juxtapositioned between semiconductor physics and homogeneous photocatalysis. While descriptors from both fields are applied in tandem, the gap between theory and experiment has widened in some areas, and arguably needs fixing. Here we review where MOFs have been shown to be similar to conventional semiconductors in photocatalysis, and where they have been shown to be more like infinite molecules in solution. We do this from the perspective of band theory, which in the context of photocatalysis, covers both the molecular and nonmolecular principles of relevance.

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Section: Band Alignmentmentioning

confidence: 99%

Metal–Organic Frameworks: Molecules or Semiconductors in Photocatalysis?

2021

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“…The development of advanced materials for renewable energy applications has attracted increasing research attention in recent years [1][2][3][4]. As an abundant, zero carbon emission source and renewable energy carrier, hydrogen plays an important role in sustainable energy and industrial chemical systems [5][6][7][8]. Hydrogen production through electrochemical water-splitting is a type of hydrogen-production technology that is advantageous owing to its high energy-conversion rate and environmentally friendly process [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Surface Restructuring of Phosphorus-Doped Carbon@MoP Electrocatalysts for Hydrogen Evolution

et al. 2021

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The hydrogen evolution reaction (HER) through electrocatalysis is promising for the production of clean hydrogen fuel. However, designing the structure of catalysts, controlling their electronic properties, and manipulating their catalytic sites are a significant challenge in this field. Here, we propose an electrochemical surface restructuring strategy to design synergistically interactive phosphorus-doped carbon@MoP electrocatalysts for the HER. A simple electrochemical cycling method is developed to tune the thickness of the carbon layers that cover on MoP core, which significantly influences HER performance. Experimental investigations and theoretical calculations indicate that the inactive surface carbon layers can be removed through electrochemical cycling, leading to a close bond between the MoP and a few layers of coated graphene. The electrons donated by the MoP core enhance the adhesion and electronegativity of the carbon layers; the negatively charged carbon layers act as an active surface. The electrochemically induced optimization of the surface/interface electronic structures in the electrocatalysts significantly promotes the HER. Using this strategy endows the catalyst with excellent activity in terms of the HER in both acidic and alkaline environments (current density of 10 mA cm−2 at low overpotentials, of 68 mV in 0.5 M H2SO4 and 67 mV in 1.0 M KOH).

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“…Herein, the typical templates and carriers are always MS powders, polystyrene, [168] or MOFs. [169,170] During the stirring process, the solvent with the nanomaterials will fill the pores of the carriers. It is a very facile and rapid process for the efficient separation of the nanomaterials, preventing their aggregation.…”

Section: Physical Methodsmentioning

confidence: 99%

Recent Progress on Synthesis, Characterization, and Applications of Metal Halide Perovskites@Metal Oxide

Duan

Wang

Costa

2021

Adv Funct Materials

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Metal halide perovskites (MHPs) have become a promising candidate in a myriad of applications, such as light-emitting diodes, solar cells, lasing, photodetectors, photocatalysis, transistors, etc. This is related to the synergy of their excellent features, including high photoluminescence quantum yields, narrow and tunable emission, long charge carrier lifetimes, broad absorption spectrum along with high extinction absorptions coefficients, among others. However, the main bottleneck is the poor stability of the MHPs under ambient conditions. This is imposing severe restrictions with respect to their industrialized applications and commercialization. In this context, metal oxide (MO x ) coatings have recently emerged as an efficient strategy toward overcoming the stabilities issues as well as retaining the excellent properties of the MHPs, and therefore facilitate the development of the related devices' stabilities and performances. This review provides a summary of the recent progress on synthetic methods, enhanced features, the techniques to assess the MHPs@MO x composites, and applications of the MHPs@MO x . Specially, novel approaches to fabricate the composites and new applications of the composites are also reported in this review for the first time. This is rounded by a critical outlook about the current MHPs' stability issues and the further direction to ensure a bright future of MHPs@MO x .

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Intermarriage of Halide Perovskites and Metal‐Organic Framework Crystals

Cited by 89 publications

References 137 publications

Metal–Organic Frameworks: Molecules or Semiconductors in Photocatalysis?

Metal–Organic Frameworks: Molecules or Semiconductors in Photocatalysis?

Electrochemical Surface Restructuring of Phosphorus-Doped Carbon@MoP Electrocatalysts for Hydrogen Evolution

Recent Progress on Synthesis, Characterization, and Applications of Metal Halide Perovskites@Metal Oxide

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