Layered perovskite oxides and their derivative nanosheets adopting different modification strategies towards better photocatalytic performance of water splitting

Hu, Yuchao; Mao, Liuhao; Guan, Xiangjiu; Tucker, Kevin Andrew; Xie, Hailian; Wu, Xue-Song; Shi, Jinwen

doi:10.1016/j.rser.2019.109527

Cited by 78 publications

(47 citation statements)

References 230 publications

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“…On the basis of XRD and FTIR investigations, the DTA/TGA results could be interpreted as follows: First three endothermal peaks with the corresponding mass loss could be attributed to the release of the remained solvent, water and decomposition of calcium nitrate tetrahydrate to anhydrous nitrate and water. Following exothermal peaks could be due to a redox process between nitrates and organics, as well as decomposition and burning of the chelate [1]. Combination of exothermal and endothermal peaks between 450 and 610 °C is due to the decomposition of nitrates, accompanied with mass loss and crystallization of the perovskite.…”

Section: Resultsmentioning

confidence: 99%

“…New challenges set by the vision of sustainable future necessitate a pursuit for new or functionalized materials. Perovskites are an interesting group of ceramic materials which might be a bridge to that future [1]. The first know perovskite material or the perovskite, by which the entire group of materials sharing its structure got their name, is calcium titanate CaTiO3 [2].…”

Section: Introductionmentioning

confidence: 99%

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Sol-gel Synthesis and Characterization of Lithium and Cerium Codoped Perovskite

Mužina¹,

Tkalčević²,

Brleković³

et al. 2020

J. Mater. Appl.

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Perovskites are an important group of ceramic materials with a structural formula ABO3 and wide array of potential applications in electronics, superconductors, catalysis, etc. CaTiO3, by which the whole group was named for, is particularly significant due to its use in catalysis, but its photocatalytic activity is limited by a large band gap value (~3.5 eV). A possible solution is the substitution of A and B cations with foreign cations which causes the alteration of properties, including photocatalytic efficiency. The aim of this work was the sol-gel synthesis of lithium and cerium codoped CaTiO3, characterization of the prepared gel and ceramics obtained by its thermal treatment. Samples of codoped perovskite, Ca1-xLixCexTiO3, where x = 0, 0.01, 0.02, 0.03 and 0.04, were prepared and characterized using powder X–ray diffraction (XRD), Fourier transformed infrared spectroscopy (FTIR), differential thermal and thermo-gravimetric analysis (DTA-TGA), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). Photocatalytic activity was evaluated through the study of methylene blue photocatalytic degradation. XRD analysis showed that the prepared samples consisted of calcium nitrate and titanium chelate. In accordance with the established thermal evolution path, all samples were thermally treated at 500 °C for 2 hours. Beside perovskite, Ca2Ti2O6 appeared as a secondary phase in all thermally treated samples. SEM analysis of thermally treated samples showed the presence of agglomerates of irregular morphology and the decrease of primary particles size with the increase of dopants concentration. The sample with x=0.04 showed an increased photocatalytic activity.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sol-gel Synthesis and Characterization of Lithium and Cerium Codoped Perovskite

Mužina¹,

Tkalčević²,

Brleković³

et al. 2020

J. Mater. Appl.

View full text Add to dashboard Cite

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“…Also, these materials possessed extraordinary photocatalysis potential. Besides, they have an excellent performance in energy and environmental areas (Hu et al 2020;Grabowska 2016;Kumar et al 2019).…”

Section: Mos 2 -Metals Oxides Materialsmentioning

confidence: 99%

MoS2-based nanocomposites: synthesis, structure, and applications in water remediation and energy storage: a review

et al. 2021

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The world is currently facing critical water and energy issues due to the growing population and industrialization, calling for methods to obtain potable water, e.g., by photocatalysis, and to convert solar energy into fuels such as chemical or electrical energy, then storing this energy. Energy storage has been recently improved by using electrochemical capacitors and ion batteries. Research is actually focusing on the synthesis of materials and hybrids displaying improved electronic, physiochemical, electrical, and optical properties. Here, we review molybdenum disulfide (MoS2) materials and hybrids with focus on synthesis, electronic structure and properties, calculations of state, bandgap and charge density profiles, and applications in energy storage and water remediation.

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“…In recent years, layered perovskite-like oxides have attracted great attention due to their structural features and associated anisotropic physical effects. Such compounds exhibit various interesting functional properties such as superconductivity [4,5], dielectric, ferroelectric and piezoelectric properties [6][7][8][9][10], photoluminescence [11][12][13], and photocatalytic activity [14][15][16][17]. In addition, as a rule, they demonstrate high thermal and mechanical stability and can be relatively easily and economically obtained via high-temperature solid-phase synthesis methods [18].…”

Section: Introductionmentioning

confidence: 99%

“…They can serve as multipurpose precursors for creating multilayer films, porous composites, and layered nanocomposites [33,[35][36][37][38]. The resulting nanolayers already show intriguing properties with potential uses in photoluminescence [39,40], catalysis [16,[41][42][43], and energy storage [44,45].…”

Section: Introductionmentioning

confidence: 99%

Physical–Chemical Exfoliation of n-Alkylamine Derivatives of Layered Perovskite-like Oxide H2K0.5Bi2.5Ti4O13 into Nanosheets

et al. 2021

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In the present work, we report the results on exfoliation and coating formation of inorganic–organic hybrids based on the layered perovskite-like bismuth titanate H2K0.5Bi2.5Ti4O13·H2O that could be prepared by a simple ion exchange reaction from a Ruddlesden–Popper phase K2.5Bi2.5Ti4O13. The inorganic–organic hybrids were synthesized by intercalation reactions. Exfoliation into nanosheets was performed for the starting hydrated protonated titanate and for the derivatives intercalated by n-alkylamines to study the influence of preliminary intercalation on exfoliation efficiency. The selected precursors were exfoliated in aqueous solutions of tetrabutylammonium hydroxide using facile stirring and ultrasonication. The suspensions of nanosheets obtained were characterized using UV–vis spectrophotometry, dynamic light scattering, inductively coupled plasma spectroscopy, and gravimetry. Nanosheets were coated on preliminarily polyethyleneimine-covered Si substrates using a self-assembly procedure and studied using atomic force and scanning electron microscopy.

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Layered perovskite oxides and their derivative nanosheets adopting different modification strategies towards better photocatalytic performance of water splitting

Cited by 78 publications

References 230 publications

Sol-gel Synthesis and Characterization of Lithium and Cerium Codoped Perovskite

Sol-gel Synthesis and Characterization of Lithium and Cerium Codoped Perovskite

MoS2-based nanocomposites: synthesis, structure, and applications in water remediation and energy storage: a review

Physical–Chemical Exfoliation of n-Alkylamine Derivatives of Layered Perovskite-like Oxide H2K0.5Bi2.5Ti4O13 into Nanosheets

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