Non-metal fluorine doping in Ruddlesden–Popper perovskite oxide enables high-efficiency photocatalytic water splitting for hydrogen production

Han, Xiao; Liu, Pengyun; Ran, Ran; Wang, Wei; Zhou, Wei; Shao, Zongping

doi:10.1016/j.mtener.2021.100896

Cited by 56 publications

(42 citation statements)

References 65 publications

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“…This demonstrates the important role of oxygen vacancies in photocatalysis. [98][99][100][101][102][103] Table 2 strongly suggests that along with surface oxygen vacancies, presence of Ce 3+ and Pr 3+ are major factors responsible for studied photocatalytic activity in water splitting, as well as in azo dyes degradation.…”

Section: Cementioning

confidence: 99%

Bandgap Engineering in Novel Fluorite‐Type Rare Earth High‐Entropy Oxides (RE‐HEOs) with Computational and Experimental Validation for Photocatalytic Water Splitting Applications

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Kojčinović

et al. 2022

Advanced Sustainable Systems

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Five different rare‐earth‐based nanocrystalline high entropy oxides (HEOs) with fluorite structure and average crystallite sizes between 6 and 8 nm are prepared and their photocatalytic behavior toward azo dye degradation and photoelectrochemical water splitting for hydrogen generation is examined. The cationic site in the fluorite lattice consists of five equimolar elements selected from the group of rare‐earth elements including La, Ce, Pr, Eu, and Gd and second‐row transition metals, Y and Zr. The studied HEOs exhibit bandgaps in the range from 1.91 to 3.0 eV and appropriate valence and conduction bands for water splitting. They reveal high photocatalytic activity that is mostly attributed to the accessibility of more photocatalytic active sites, which provide radicals responsible for the azo dye degradation. The materials successfully produce hydrogen by photocatalytic water splitting, suggesting the potential of HEOs as new photocatalysts. The photocatalytic performances of all studied HEOs outperform the single fluorite oxides or equivalent mixed oxides. The Ce0.2Zr0.2La0.2Pr0.2Y0.2O2 (CZLPY) engender hydrogen in 9.2 µmol mg−1 per hour that is much higher content than for pristine CeO2 material which amounts to 0.8 µmol mg−1 per hour.

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Section: Cementioning

confidence: 99%

Bandgap Engineering in Novel Fluorite‐Type Rare Earth High‐Entropy Oxides (RE‐HEOs) with Computational and Experimental Validation for Photocatalytic Water Splitting Applications

Nundy

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Kojčinović

et al. 2022

Advanced Sustainable Systems

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“…It was found that polyhedral NiO nano single crystals were formed on the NiO film surface, enabling an intimate and large interface area connection with MAPbI 3 film, which significantly improved the cell efficiency. More specifically, the uniform NiO NCs also promoted the lead iodide (PbI 2 ) deposition in the two-step perovskite film fabrication processes, while large MAPbI 3 grains were formed to construct a highly textured MAPbI 3 /Methyl [ 6 , 6 ]-phenyl-C 61 -butyrate (PCBM) interface with the help of uniform NiO NCs surface, which remarkably increased the electron-hole diffusion length. In addition, NiO NCs also acted as effective light scattering centers to enhance the sunlight absorption capability of PSCs.…”

Section: Advances In the Nanostructured Inorganic Htls For Pscsmentioning

confidence: 99%

“…Among various renewable energies, solar energy has attracted extensive attention because of its abundance and clean nature. At present, the utilization of solar energy can be mainly categorized into photovoltaic (solar cells), photocatalysis and photothermal technologies [ 6 , 7 , 8 , 9 , 10 ]. Among them, solar cells are considered the most attractive ways to convert solar energy into electricity directly [ 11 , 12 , 13 , 14 , 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in Nanostructured Inorganic Hole-Transporting Materials for Perovskite Solar Cells

et al. 2022

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Organic−inorganic halide perovskite solar cells (PSCs) have received particular attention in the last decade because of the high−power conversion efficiencies (PCEs), facile fabrication route and low cost. However, one of the most crucial obstacles to hindering the commercialization of PSCs is the instability issue, which is mainly caused by the inferior quality of the perovskite films and the poor tolerance of organic hole−transporting layer (HTL) against heat and moisture. Inorganic HTL materials are regarded as promising alternatives to replace organic counterparts for stable PSCs due to the high chemical stability, wide band gap, high light transmittance and low cost. In particular, nanostructure construction is reported to be an effective strategy to boost the hole transfer capability of inorganic HTLs and then enhance the PCEs of PSCs. Herein, the recent advances in the design and fabrication of nanostructured inorganic materials as HTLs for PSCs are reviewed by highlighting the superiority of nanostructured inorganic HTLs over organic counterparts in terms of moisture and heat tolerance, hole transfer capability and light transmittance. Furthermore, several strategies to boost the performance of inorganic HTLs are proposed, including fabrication route design, functional/selectively doping, morphology control, nanocomposite construction, etc. Finally, the challenges and future research directions about nanostructured inorganic HTL−based PSCs are provided and discussed. This review presents helpful guidelines for the design and fabrication of high−efficiency and durable inorganic HTL−based PSCs.

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“…However, they have been affected by instability is not only in solar cells but also in other applications, such as in LEDs and bioima Inorganic perovskites have been introduced into optoelectronic devices to overcome issues [28][29][30]. Inorganic perovskite oxide, lead-free inorganic perovskites and inorg perovskites with mixed halides have also been developed in past decades [31][32][33][34][35][36][37][38] inorganic halide perovskites have also received great attention from various fields as solar cells [39,40], lasers [41,42], LEDs [43,44], water splitting [45,46], etc. becau their high performance and stability.…”

Section: Istrymentioning

confidence: 99%

Recent Progress in Lanthanide-Doped Inorganic Perovskite Nanocrystals and Nanoheterostructures: A Future Vision of Bioimaging

et al. 2022

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All-inorganic lead halide perovskite nanocrystals have great potential in optoelectronics and photovoltaics. However, their biological applications have not been explored much owing to their poor stability and shallow penetration depth of ultraviolet (UV) excitation light into tissues. Interestingly, the combination of all-inorganic halide perovskite nanocrystals (IHP NCs) with nanoparticles consisting of lanthanide-doped matrix (Ln NPs, such as NaYF4:Yb,Er NPs) is stable, near-infrared (NIR) excitable and emission tuneable (up-shifting emission), all of them desirable properties for biological applications. In addition, luminescence in inorganic perovskite nanomaterials has recently been sensitized via lanthanide doping. In this review, we discuss the progress of various Ln-doped all-inorganic halide perovskites (LnIHP). The unique properties of nanoheterostructures based on the interaction between IHP NCs and Ln NPs as well as those of LnIHP NCs are also detailed. Moreover, a systematic discussion of basic principles and mechanisms as well as of the recent advancements in bio-imaging based on these materials are presented. Finally, the challenges and future perspectives of bio-imaging based on NIR-triggered sensitized luminescence of IHP NCs are discussed.

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Non-metal fluorine doping in Ruddlesden–Popper perovskite oxide enables high-efficiency photocatalytic water splitting for hydrogen production

Cited by 56 publications

References 65 publications

Bandgap Engineering in Novel Fluorite‐Type Rare Earth High‐Entropy Oxides (RE‐HEOs) with Computational and Experimental Validation for Photocatalytic Water Splitting Applications

Bandgap Engineering in Novel Fluorite‐Type Rare Earth High‐Entropy Oxides (RE‐HEOs) with Computational and Experimental Validation for Photocatalytic Water Splitting Applications

Recent Advances in Nanostructured Inorganic Hole-Transporting Materials for Perovskite Solar Cells

Recent Progress in Lanthanide-Doped Inorganic Perovskite Nanocrystals and Nanoheterostructures: A Future Vision of Bioimaging

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