Metal Halide Perovskites for Solar Fuel Production and Photoreactions

Park, Sunghak; Choi, Seungwoo; Kim, Sungho; Nam, Ki Tae

doi:10.1021/acs.jpclett.1c02373

Cited by 19 publications

(13 citation statements)

References 79 publications

(170 reference statements)

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“…Inspired by this pioneering work, the potential of MHPPs with various components has been explored for photocatalytic halogen-acid splitting and significant progress has been achieved [9,67]. Particularly, 500 h long cycling stability is achieved in a similar system with MoS 2 /CABB (Cs 2 AgBiBr 6 ) as the photocatalyst (figure 2(d)) [60].…”

Section: Mhp-saturated Halogen-acid Solutionsmentioning

confidence: 99%

Addressing the stability challenge of metal halide perovskite based photocatalysts for solar fuel production

Xiao¹,

Zhang²,

You³

et al. 2022

J. Phys. Energy

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Artificial photosynthesis, converting solar energy to renewable fuels and valuable chemicals, shows high potential for addressing the exhaustion of fossil fuels and the greenhouse effect. The superior optoelectronic properties of metal halide perovskites (MHPs) make this emerging family of materials promising candidates for efficient solar-to-fuel conversion. However, the stability issue has been the main obstacle for MHPs based photocatalysis. In this work, we emphasize the major bottleneck that hinders applications of MHPs for photocatalytic solar-to-fuel conversion. After outlining the unstable factors for MHPs based photocatalysis, we analyses the recently works in the related fields and provide a critical review of approaches to improving the stability of MHPs for the photocatalytic H2 evolution reaction and CO2 reduction reaction. We conclude by proposing possible directions for the development of stabilizing MHPs towards efficient and cost-effective solar-to-fuel conversion.

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Section: Mhp-saturated Halogen-acid Solutionsmentioning

confidence: 99%

Addressing the stability challenge of metal halide perovskite based photocatalysts for solar fuel production

Xiao¹,

Zhang²,

You³

et al. 2022

J. Phys. Energy

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“…The photoconversion potential for hybrid lead halide perovskites has prompted intense research efforts in designing new materials for optoelectronic applications. With the goal of ultimately developing commercially viable photovoltaic materials, − research efforts continue to focus on associated challenges with hybrid perovskites, including a need for the preparation of stable lead-free alternatives. , Promising candidates for tailorable light emitting diode (LED) materials are halide-based double perovskites A 2 B′B″X 6 (A = Cs + ; B′ = Ag + , Na + ; B″ = Bi 3+ , In 3+ , Sb 3+ ; X = Cl – , Br – ) which maintain three-dimensional (3D) perovskite crystal structures (Figure a) with excellent chemical stability that can utilize inexpensive and less toxic elements than the Pb(II) in APbX 3 perovskites . Most double perovskites reported to date are chlorides which exhibit wide bandgaps (>2.5 eV), generally inhibiting them from being effective solar harvesting materials and prompting a search for low-bandgap compounds. , Of late, several double perovskites in bulk and nanocrystalline phases doped with paramagnetic transition-metal ions (Mn(II), Cu(II), Cr(III)) have been shown to have enhanced optical and photophysical properties. − For example, the Cs 2 AgInCl 6 double perovskite, with a direct bandgap of 3.3–3.7 eV, emits broadly across the white-light spectrum (400–800 nm) .…”

Section: Introductionmentioning

confidence: 99%

Triangulating Dopant-Level Mn(II) Insertion in a Cs₂NaBiCl₆Double Perovskite Using Magnetic Resonance Spectroscopy

et al. 2023

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Lead-free metal halide double perovskites are gaining increasing attention for optoelectronic applications. Specifically, doping metal halide double perovskites using transition metals enables broadband tailorability of the optical bandgap for these emerging semiconducting materials. One candidate material is Mn(II)-doped Cs 2 NaBiCl 6 , but the nature of Mn(II) insertion on chemical structure is poorly understood due to low Mn loading. It is critical to determine the atomic-level structure at the site of Mn(II) incorporation in doped perovskites to better understand the structure−property relationships in these materials and thus to advance their applicability to optoelectronic applications. Magnetic resonance spectroscopy is uniquely qualified to address this, and thus a comprehensive three-pronged strategy, involving solid-state nuclear magnetic resonance (NMR), high-field dynamic nuclear polarization (DNP), and electron paramagnetic resonance (EPR) spectroscopies, is used to identify the location of Mn(II) insertion in Cs 2 NaBiCl 6 . Multinuclear ( 23 Na, 35 Cl, 133 Cs, and 209 Bi) one-dimensional (1D) magnetic resonance spectra reveal a low level of Mn(II) incorporation, with select spins affected by paramagnetic relaxation enhancement (PRE) induced by Mn(II) neighbors. EPR measurements confirm the oxidation state, octahedral symmetry, and low doping levels of the Mn(II) centers. Complementary EPR and NMR measurements confirm that the cubic structure is maintained with Mn(II) incorporation at room temperature, but the structure deviates slightly from cubic symmetry at low temperatures (<30 K). HYperfine Sublevel CORrelation (HYSCORE) EPR spectroscopy explores the electron−nuclear correlations of Mn(II) with 23 Na, 133 Cs, and 35 Cl. The absence of 209 Bi correlations suggests that Bi centers are replaced by Mn(II). Endogenous DNP NMR measurements from Mn(II) → 133 Cs (<30 K) reveal that the solid effect is the dominant mechanism for DNP transfer and supports that Mn(II) is homogeneously distributed within the double-perovskite structure.

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“…Ever since photocatalysis over TiO 2 was reported [4], numerous photocatalysts have been explored for H 2 production from water, including SrTiO 3 [5], ZnIn 2 S 4 [6], g-C 3 N 4 [7], MOFs [8], and COFs [9] [10][11][12][13][14][15][16]. Recently, halide perovskites with chemical formula ABX 3 (A = Cs or organic cation, B = Pb 2+ or Sn 2+ , and X = Cl − , Br -, or I -) have gained great interest as photocatalysts for H 2 evolution reactions [17,18]. This has been ascribed to their superior visible light absorption and high charge mobility which are strongly desired for photocatalytic reactions [19,20].…”

Section: Introductionmentioning

confidence: 99%

Expediting H ₂ Evolution over MAPbI ₃ with a Nonnoble Metal Cocatalyst Mo ₂ C under Visible Light

2022

Energy Mater Adv

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Halide perovskites have been emerging as promising photocatalytic materials for H2 evolution from water due to their outstanding photoelectric properties. However, the lack of proper surface reactive sites greatly hinders the photocatalytic potential of these fascinating compounds. Here, Mo2C nanoparticles have been anchored onto methylammonium lead iodide (MAPbI3) as a nonnoble metal cocatalyst to promote H2 evolution reactions. The Mo2C nanoparticles have opposite zeta potential with MAPbI3 thereby electrostatically assembled onto the MAPbI3 surface, i.e., Mo2C@MAPbI3. Our results show that the anchored Mo2C nanoparticles have a strong interplay with MAPbI3 substrate so that photogenerated electrons of MAPbI3 can be rapidly separated and transferred into Mo2C for further H2 evolution reactions. Under optimal conditions, Mo2C@MAPbI3 delivers exceptionally high photocatalytic performance for visible light-driven H2 evolution that clearly outperforms pristine MAPbI3 and Pt-deposited MAPbI3. An apparent quantum efficiency as high as 12.65% at 600±40 nm has been attained for H2 evolution, surpassing most of the MAPbI3-based photocatalyst reported. These results signify the usefulness and applicability of Mo2C as a new nonnoble metal-based cocatalyst in solar water splitting.

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Metal Halide Perovskites for Solar Fuel Production and Photoreactions

Cited by 19 publications

References 79 publications

Addressing the stability challenge of metal halide perovskite based photocatalysts for solar fuel production

Addressing the stability challenge of metal halide perovskite based photocatalysts for solar fuel production

Triangulating Dopant-Level Mn(II) Insertion in a Cs₂NaBiCl₆Double Perovskite Using Magnetic Resonance Spectroscopy

Expediting H ₂ Evolution over MAPbI ₃ with a Nonnoble Metal Cocatalyst Mo ₂ C under Visible Light

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Metal Halide Perovskites for Solar Fuel Production and Photoreactions

Cited by 19 publications

References 79 publications

Addressing the stability challenge of metal halide perovskite based photocatalysts for solar fuel production

Addressing the stability challenge of metal halide perovskite based photocatalysts for solar fuel production

Triangulating Dopant-Level Mn(II) Insertion in a Cs2NaBiCl6Double Perovskite Using Magnetic Resonance Spectroscopy

Expediting H 2 Evolution over MAPbI 3 with a Nonnoble Metal Cocatalyst Mo 2 C under Visible Light

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Resources

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Triangulating Dopant-Level Mn(II) Insertion in a Cs₂NaBiCl₆Double Perovskite Using Magnetic Resonance Spectroscopy

Expediting H ₂ Evolution over MAPbI ₃ with a Nonnoble Metal Cocatalyst Mo ₂ C under Visible Light