Visible-light-driven BaBiO3 perovskite photocatalysts: Effect of physicochemical properties on the photoactivity towards water splitting and the removal of rhodamine B from aqueous systems

Huerta-Flores, Ali M.; Sánchez-Martínez, D.; Hernández-Romero, María del Rocío; Zarazúa-Morín, María E.; Torres-Martı́nez, Leticia M.

doi:10.1016/j.jphotochem.2018.09.025

Cited by 48 publications

(17 citation statements)

References 49 publications

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“…BBO, a well‐known parent material for the high‐ T C superconducting compounds Ba 1− x K x BiO 3 and BaPb 1‐ x Bi x O 3 , adopts a monoclinically distorted perovskite structure (space group: I2/m) at room temperature, with a pseudocubic lattice constant of ≈4.36 Å (e.g., ICSD‐67073). Recently, BBO was used as potential absorber for all‐oxide solar cells and as photocatalyst for water reduction . Within the pseudocubic cells of BBO, the BiO 6 ‐octahedra show about 10° rotations that can be described by the Glazer notation a P − b P − c P 0 , whereas the BiO bond varies between 2.11 and 2.29 Å for adjacent octahedra leading to the so‐called breathing mode distortion …”

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confidence: 99%

Atomic‐Scale Interface Structure in Domain Matching Epitaxial BaBiO₃ Thin Films Grown on SrTiO₃ Substrates

Jin

Zapf

Stübinger

et al. 2020

Physica Rapid Research Ltrs

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The electronic structures of BaBiO3 (BBO) thin films grown on SrTiO3 substrates are found to be thickness dependent. The origin of this behavior remains under debate and has been suggested to be attributed to the structural and compositional modifications at the BBO/SrTiO3 interface during the first stage of film growth. Though a wetting layer with thickness of ≈1 nm has been experimentally identified at the interface, details on the microstructures of such a layer and their effect on the subsequent film growth are lacking so far, particularly at the atomic scale. Herein, atomic‐resolution scanning transmission electron microscopy is used to study the interface structure of a 30 nm‐thick BBO film grown on an Nb‐doped SrTiO3 (STO) substrate through domain matching epitaxy. An interfacial δ‐Bi2O3 (BO)‐like phase with fluorite structure is identified, showing a layer‐by‐layer spacing of ≈3.2 Å along the growth direction. The orientation relationship between the BO‐like phase and surrounding perovskites (P) is found to be <001>BO||<001>P and <110>BO||<100>P. The presence of the BO‐like phase results in two types of interfaces, i.e., a coherent BO/STO and a semicoherent BBO/BO interface. Thickness variations are observed in the BO‐like layer, resulting in the formation of antiphase domains in the BBO films.

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confidence: 99%

Atomic‐Scale Interface Structure in Domain Matching Epitaxial BaBiO₃ Thin Films Grown on SrTiO₃ Substrates

Jin

Zapf

Stübinger

et al. 2020

Physica Rapid Research Ltrs

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Section: Photocatalytic Oxidation (Light/catalyst)mentioning

confidence: 99%

“…Recently, bismuth-based perovskites have also attracted interest as photocatalysts due to their particular electronic structure that reduces the charge mobility and the band gap to ∼2 eV [126][127][128][129]. BaBiO 3 powders with a base centred monoclinic structure exhibited good activity for the water-splitting reaction and the degradation of rhodamine B dye under visible light [126]. Authors demonstrated that the catalytic activity strongly depended on the crystallinity of the materials, BaBiO 3 prepared by solid state being the catalyst with the highest crystallinity, the lowest resistance to the charge transfer and the greatest photocatalytic performance.…”

Section: Photocatalytic Oxidation (Light/catalyst)mentioning

confidence: 99%

Perovskites as Catalysts in Advanced Oxidation Processes for Wastewater Treatment

Cervantes

Castillejos

2019

Catalysts

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Advanced oxidation processes (AOPs), based on the formation of highly reactive radicals are able to degrade many organic contaminants present in effluent water. In the heterogeneous AOPS the presence of a solid which acts as catalyst in combination with other systems (O3, H2O2, light) is required. Among the different materials that can catalyse these processes, perovskites are found to be very promising, because they are highly stable and exhibit a high mobility of network oxygen with the possibility of forming vacancies and to stabilize unusual oxidation states of metals. In this review, we show the fundaments of different kinds of AOPs and the application of perovskite type oxides in them, classified attending to the oxidant used, ozone, H2O2 or peroxymonosulfate, alone or in combination with other systems. The photocatalytic oxidation, consisting in the activation of the perovskite by irradiation with ultraviolet or visible light is also revised.

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“…The past two decades have witnessed a significant renaissance of the bismuthate BaBiO 3 from both a technological and scientific viewpoint [1][2][3][4][5][6][7][8][9][10][11], especially as a superconductor [1,3,[5][6][7] because of its electronic properties, and as a promising photocatalyst toward the degradation of organic pollutants [2], water splitting [9,10], CO 2 reduction [4], and as a prospective photovoltaic material [11]. The unique properties of BaBiO 3 are largely the result of the occurrence of both Bi 3+ and Bi 5+ oxidation states that have tended to complicate studies of this bismuthate.…”

Section: Introductionmentioning

confidence: 99%

“…Although the figure shows only four examples of direct/indirect bandgaps for this bismuthate, other experimental determinations of the bandgap energy have revealed far greater disparities. For instance, Uchida et al [12] found a direct E bg of 2.0 eV for BaBiO 3 , while others described indirect bandgaps E bg of 0.2 eV [13], 0.5 eV [14], 0.8 eV [15], 1.1 eV [16], and 1.94-2.02 eV depending on temperature and preparative mode [10]. Theoretical computations of direct and indirect bandgap energies fare no better, as they are strongly dependent on the assumptions and DFT approaches taken.…”

Section: Introductionmentioning

confidence: 99%

Revisiting the BaBiO3 semiconductor photocatalyst: synthesis, characterization, electronic structure, and photocatalytic activity

Shtarev

Shtareva

Kevorkyants

et al. 2021

Photochem Photobiol Sci

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This article revisits the properties of BaBiO 3 examined extensively in the last two decades because of its electronic properties as a superconductor and as a semiconductor photocatalyst. Solid-state syntheses of this bismuthate have often involved BaCO 3 as the barium source, which may lead to the formation of BaBiO 3 /BaCO 3 heterostructures that could have an impact on the electronic properties and, more importantly, on the photocatalytic activity of this bismuthate. Accordingly, we synthesized BaBiO 3 by a solid-state route to avoid the use of a carbonate; it was characterized by XRD, SEM, and EDX, while elemental mapping characterized the composition and the morphology of the crystalline BaBiO 3 and its thin films with respect to structure, optoelectronic, and photocatalytic properties. XPS, periodic DFT calculations, and electrochemical impedance spectroscopy ascertained the electronic and electrical properties, while Raman and DRS spectroscopies assessed the relevant optical properties. The photocatalytic activity was determined via the degradation of phenol in aqueous media. Although some results accorded with earlier studies, the newer electronic structural data on this bismuthate, together with the photocatalytic experiments carried out in the presence of selective radical trapping agents, led to elucidating some of the mechanistic details of the photocatalytic processes that previous views of the BaBiO 3 band structure failed to address or clarify. Analytical refinement of the XRD data inferred the as-synthesized BaBiO 3 adopted the C 2/m symmetry rather than the I 2/m structure reported earlier, while Tauc plots from DRS spectra yielded a bandgap of 2.05 eV versus the range of 1.1-2.25 eV reported by others; the corresponding flatband potentials were 1.61 eV (E VB ) and − 0.44 eV (E CB ). The photocatalytic activity of BaBiO 3 was somewhat greater than that of the well-known Evonik P25 TiO 2 photocatalyst under comparable experimental conditions.

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Visible-light-driven BaBiO3 perovskite photocatalysts: Effect of physicochemical properties on the photoactivity towards water splitting and the removal of rhodamine B from aqueous systems

Cited by 48 publications

References 49 publications

Atomic‐Scale Interface Structure in Domain Matching Epitaxial BaBiO₃ Thin Films Grown on SrTiO₃ Substrates

Atomic‐Scale Interface Structure in Domain Matching Epitaxial BaBiO₃ Thin Films Grown on SrTiO₃ Substrates

Perovskites as Catalysts in Advanced Oxidation Processes for Wastewater Treatment

Revisiting the BaBiO3 semiconductor photocatalyst: synthesis, characterization, electronic structure, and photocatalytic activity

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Visible-light-driven BaBiO3 perovskite photocatalysts: Effect of physicochemical properties on the photoactivity towards water splitting and the removal of rhodamine B from aqueous systems

Cited by 48 publications

References 49 publications

Atomic‐Scale Interface Structure in Domain Matching Epitaxial BaBiO3 Thin Films Grown on SrTiO3 Substrates

Atomic‐Scale Interface Structure in Domain Matching Epitaxial BaBiO3 Thin Films Grown on SrTiO3 Substrates

Perovskites as Catalysts in Advanced Oxidation Processes for Wastewater Treatment

Revisiting the BaBiO3 semiconductor photocatalyst: synthesis, characterization, electronic structure, and photocatalytic activity

Contact Info

Product

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Atomic‐Scale Interface Structure in Domain Matching Epitaxial BaBiO₃ Thin Films Grown on SrTiO₃ Substrates

Atomic‐Scale Interface Structure in Domain Matching Epitaxial BaBiO₃ Thin Films Grown on SrTiO₃ Substrates