Investigating the effects of various synthesis routes on morphological, optical, photoelectrochemical and photocatalytic properties of single-phase perovskite BiFeO3

Chien, Shui‐Wen Chang; Ng, Ding-Quan; Kumar, Dileep; Lam, Sze–Mun; Jaffari, Zeeshan Haider

doi:10.1016/j.jpcs.2021.110342

Cited by 39 publications

(9 citation statements)

References 49 publications

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“…During co-precipitation, the pH value of the solution has been controlled. Precipitation takes place in the solution at a determined temperature (>70 °C), in which the supersaturation conditions help to induce precipitation as the result of a chemical reaction (Chang Chien et al, 2022). The precipitates are collected and washed several times and then dried in a hot air oven at a temperature >70 °C.…”

Section: Co-precipitationmentioning

confidence: 99%

Potential Application of Perovskite Structure for Water Treatment: Effects of Band Gap, Band Edges, and Lifetime of Charge Carrier for Photocatalysis

Chacaliaza-Ricaldi²,

Marega³

2022

Front. Nanotechnol.

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Perovskite structures have attracted scientific interest as a promising alternative for water treatment due to their unique structural, high oxidation activity, electronic stability, and optical properties. In addition, the photocatalytic activity of perovskite structures is higher than that of many transition metal compounds. A critical property that determines the high-performance photocatalytic and optical properties is the band gap, lifetime of carrier charge, and band edges relative to the redox potential. Thus, the synthesis/processing and study of the effect on the band gap, lifetime of carrier charge, and band edges relative to the redox potential in the development of high-performance photocatalysts for water treatment are critical. This review presents the basic physical principles of optical band gaps, their band gap tunability, potentials, and limitations in the applications for the water treatment. Furthermore, it reports recent advances in the synthesis process and comparatively examines the band gap effect in the photocatalytic response. In addition to the synthesis, the physical mechanisms associated with the change in the band gap have been discussed. Finally, the conclusions of this review, along with the current challenges of perovskites for photocatalysis, are presented.

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Section: Co-precipitationmentioning

confidence: 99%

Potential Application of Perovskite Structure for Water Treatment: Effects of Band Gap, Band Edges, and Lifetime of Charge Carrier for Photocatalysis

Chacaliaza-Ricaldi²,

Marega³

2022

Front. Nanotechnol.

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“…due to its unique features such as high charge mobility, excellent chemical/thermal stability, luminescence properties, and controllable morphology. , Incorporating CdS semiconductor in polyaniline matrix has been, so far, the subject of several researches. − Polyaniline and cadmium sulfide well-match in terms of energy. The conduction band of CdS is adjacent to the LUMO of PANI, which facilitates the charge separation process, as shown in Scheme . , Morphology control, at a molecular scale, is a key parameter in the design of hybrid nanocomposites to achieve a better performance, achieving of which is possible by a controlled synthesis method …”

Section: Introductionmentioning

confidence: 99%

“…26,27 Morphology control, at a molecular scale, is a key parameter in the design of hybrid nanocomposites to achieve a better performance, achieving of which is possible by a controlled synthesis method. 28 Aiming at improving the electrical, photovoltaic and thermal stability of polyaniline, and expanding its scope of application, the present study synthesized the PANI-CdS hybrid nanocomposite containing different-percent (by weight) of CdS. To this end, use was made of a one-pot process to control the morphology to achieve a stable, well-designed hybrid nanocomposite, then organic−inorganic hybrid solar cells were fabricated, and the morphology effects were examined on their performance.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Polyaniline/Cadmium Sulfide Hybrid Nanocomposites via a One-Pot Process: Morphology Control for Improvement of Photovoltaic Performance

Jarrahi

Farzi

Fischer

2023

ACS Appl. Electron. Mater.

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In this work, the one-pot process was employed to synthesize polyaniline/cadmium sulfide hybrid nanocomposite. Herein, for the first time, we report a comprehensive study from the synthesis of the raw materials to the photovoltaic cell performance investigation including the synthesis of the polyaniline/cadmium sulfide hybrid nanocomposite through a one-pot process, a morphology study, the fabrication of a hybrid organic/inorganic solar cell, and the evaluation of the cell performance. To this end, the CdS-to-PANI weight ratio was considered as a key parameter, and 0, 2.5, 5, 10, 15, 20, and 40% were used as the CdS values. FTIR, XRD, and FESEM analyses confirmed that the presence of CdS in the PANI nanotubular network affected the morphology of the hybrid nanocomposite, and changing the CdS-to-PANI ratio tuned the nanotubular network morphology from coarse to fine. UV–visible absorption spectrum studies validated the reduction of PANI bandgap due to the presence of CdS. Likewise, the conductivity of the nanocomposites was also improved compared to neat PANI due to the increasing of charge density. These controlled-morphology nanocomposites were used for organic/inorganic hybrid solar cells based on the configuration of the FTO/ZnO/CdS@PANI/Ag device, and the morphology effects on their performance were investigated. When CdS was incorporated in the PANI nanotubular network, J SC and efficiency increased by, respectively, 4.471 mA·cm–1 and 1.87%. This means a 22-fold increase in J SC and a 1700-fold increase in the solar cell based on 20%CdS@PANI compared to those in the solar cell made with pure PANI. In short, by using the one-pot process, it is possible to hierarchically ensure better control of the morphology of organic and inorganic components, increasing the light absorption edge, reducing the bandgap, and improving the photovoltaic performance of CdS@PANI organic–inorganic hybrid nanocomposites.

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“…The morphology, size and structure of nanoparticles, the presence and amount of impurity phases in a nanopowder can significantly affect the mechanical and functional properties of the materials obtained from them [1][2][3], including the magnetic, electrical, photocatalytic properties of bismuth orthoferrite [4][5][6][7][8][9][10][11]. These reasons stimulate the development of methods for synthesis of bismuth orthoferrite nanopowders, which would provide their morphological characteristics, dispersed and phase composition, necessary to obtain materials with needed properties.…”

Section: Introductionmentioning

confidence: 99%

Influence of using different types of microreactors on the formation of nanocrystalline BiFeO3

Проскурина¹,

Абиев²,

Неведомский³

2023

Nanosystems: Phys. Chem. Math.

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The influence of the coprecipitation of bismuth and iron hydroxides in microreactors of various types on the formation of nanocrystalline bismuth orthoferrite during the heat treatment of the deposit was described. Free impinging-jets microreactor, microreactor with submerged jets, microreactor with intensively swirling flows were used. It was revealed that nanocrystalline bismuth orthoferrite with the smallest weighted average crystallite size of 12 nm is formed when a microreactor with tangentially swirling flows of reagent solutions is used for coprecipitation of hydroxides. The minimum size of BiFeO 3 crystallites according to transmission electron microscopy data is determined as 3-4 nm. KEYWORDS free impinging-jets microreactor, microreactor with submerged jets, microreactor with intensively swirling flows, nanocrystals, bismuth ferrite.

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Investigating the effects of various synthesis routes on morphological, optical, photoelectrochemical and photocatalytic properties of single-phase perovskite BiFeO3

Cited by 39 publications

References 49 publications

Potential Application of Perovskite Structure for Water Treatment: Effects of Band Gap, Band Edges, and Lifetime of Charge Carrier for Photocatalysis

Potential Application of Perovskite Structure for Water Treatment: Effects of Band Gap, Band Edges, and Lifetime of Charge Carrier for Photocatalysis

Synthesis of Polyaniline/Cadmium Sulfide Hybrid Nanocomposites via a One-Pot Process: Morphology Control for Improvement of Photovoltaic Performance

Influence of using different types of microreactors on the formation of nanocrystalline BiFeO3

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