Tuning the morphology, stability and optical properties of CsSnBr<sub>3</sub> nanocrystals through bismuth doping for visible-light-driven applications

Adib, Md. Asif; Sharmin, Fahmida; Basith, M. A.

doi:10.1039/d3na00309d

Cited by 8 publications

(3 citation statements)

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“…S3(a,b) revealed a time-dependent reduction in peak intensity with a hypsochromic shift, indicating the degradation of RhB and LFX under the UV-vis spectrum with the presence of DyFeO 3 photocatalyst. 47 The photocatalytic efficiency of DyFeO 3 nanoparticles to degrade the industrial dye (RhB) and pharmaceutical antibiotic (LFX) is evaluated using the following equation: 19,50 Photocatalytic degradation (%)…”

Section: Photocatalytic Performances Evaluationmentioning

confidence: 99%

“…formula. 48,49 This value is subsequently transformed to -1.703 V versus the normal hydrogen electrode (NHE) using the equation E NHE = E Ag/AgCl + 0.197 V. 47,49 In the realm of ntype semiconductors, E fb exhibits a close association with the conduction band (CB) and tends to be approximately 0.1 V more positive than its conduction band potentials (E CB ). 49 Consequently, the calculated E CB for DyFeO 3 nanoparticles is roughly estimated to be -1.803 V (∼ NHE).…”

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confidence: 99%

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Promising Potential of Nanostructured DyFeO3 Photocatalyst for Environmental Remediation: Authenticity and Stability

Tarek,

Yasmeen,

Basith

2024

Preprint

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Understanding the authentic nature and stability of a photocatalyst through diverse experiments and calculations is crucial for advancing environmental remediation. In this study, we synthesized nano-sized DyFeO3 particles with a porous structure, featuring an average pore size of 40 nm, to meticulously evaluate their photocatalytic efficacy in degrading aquatic pollutants under solar irradiation. These nanoparticles exhibit a direct band gap of 2.1 eV, rendering them well-suited for effective solar light absorption. Additionally, the conduction band minimum (CBM) suggests potential participation in reduction reactions, while the valence band maximum (VBM) is conducive to oxidation reactions. To confirm the authentic catalytic efficiency of DyFeO3 photocatalysts, we assessed their ability to degrade both colored Rhodamine B (RhB) and colorless antibiotic Levofloxacin (LFX). Notably, their photocatalytic performance in decomposing the colorless pollutant LFX, alongside the colored RhB, eliminates any potential influence of dye sensitization. Moreover, the presence of DyFeO3 in the solution medium decreased the activation energy of LFX degradation from 38.4 kJ mol-1 1 K-1 to 34.1 kJ mol-1 K-1 , providing further evidence of their true catalytic function. Furthermore, their apparent Quantum Yield (AQY) values of 28.94% and 32.83% for RhB and LFX degradation, respectively, demonstrate superior solar energy harvesting capability compared to commercially available TiO2. The high degradation efficiency, high quantum yield, and excellent stability of single-structured DyFeO3 nanoparticles indicate their considerable potential for large-scale production in photocatalytic and related applications

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Section: Photocatalytic Performances Evaluationmentioning

confidence: 99%

mentioning

confidence: 99%

Promising Potential of Nanostructured DyFeO3 Photocatalyst for Environmental Remediation: Authenticity and Stability

Tarek,

Yasmeen,

Basith

2024

Preprint

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“…Tin-based analogs CsSnX 3 perovskites are emerging as promising nontoxic perovskites for photocatalysis. − However, the potential of CsSnX 3 perovskites is restricted by their low stability against moisture and heat, primarily due to the susceptibility of Sn 2+ to oxidize into Sn 4+ , leading to rapid degradation . In contrast, Sn 4+ -based perovskites (Cs 2 SnX 6 ) are known to exhibit higher stability than their CsSnX 3 counterparts .…”

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Enabling Enhanced Photocatalytic Hydrogen Evolution in Water by Doping Cs₂SnBr₆ Perovskite with Pt

Wang,

Zhang,

Chen

et al. 2024

ACS Energy Lett.

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Lead (Pb) halide perovskites (LHPs) have attracted great interest in photocatalysis. However, the unsatisfactory stability and toxicity of Pb restrict its large-scale application. Herein, lead-free Cs 2 Pt 0.25 Sn 0.75 Br 6 perovskites are reported for photocatalytic hydrogen reaction (HER) in water. The partial substitution of Sn atoms with Pt atoms dramatically enhances the HER performance and stability of the Cs 2 SnBr 6 perovskites. This doping approach allows Cs 2 Pt 0.25 Sn 0.75 Br 6 to work in the aqueous phase without saturated hydrohalic acid. The resultant dye-sensitized Cs 2 Pt 0.25 Sn 0.75 Br 6 perovskites exhibit a remarkable H 2 evolution rate of 11.49 mmol g −1 h −1 with an apparent quantum yield of 7.2%. Various investigations uncover that Pt doping significantly tunes the intrinsic properties and surface active sites of the Cs 2 Pt 0.25 Sn 0.75 Br 6 . Furthermore, the more negative formation energy and decreased surface hydrophilicity endow Cs 2 Pt x Sn 1−x Br 6 with a high stability against water. This work represents a significant stride toward the realization of water-stable lead-free perovskites for photocatalysis.

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Composition-tunable structural and optical properties of dual-phase cesium tin bromide perovskite semiconductors

Gopinathan,

Sathik Basha,

Mubeen

et al. 2024

J Mater Sci: Mater Electron

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Tuning the morphology, stability and optical properties of CsSnBr₃ nanocrystals through bismuth doping for visible-light-driven applications

Abstract: In this investigation, we have demonstrated the synthesis of lead-free, CsSnBr3 (CSB) and 5 mol% bismuth (Bi) doped CSB (CSB$^\prime$B) nanocrystals, with a stable cubic perovskite structure following a facile...

Cited by 8 publications

References 100 publications

Promising Potential of Nanostructured DyFeO3 Photocatalyst for Environmental Remediation: Authenticity and Stability

Promising Potential of Nanostructured DyFeO3 Photocatalyst for Environmental Remediation: Authenticity and Stability

Enabling Enhanced Photocatalytic Hydrogen Evolution in Water by Doping Cs₂SnBr₆ Perovskite with Pt

Composition-tunable structural and optical properties of dual-phase cesium tin bromide perovskite semiconductors

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Tuning the morphology, stability and optical properties of CsSnBr3 nanocrystals through bismuth doping for visible-light-driven applications

Abstract: In this investigation, we have demonstrated the synthesis of lead-free, CsSnBr3 (CSB) and 5 mol% bismuth (Bi) doped CSB (CSB$^\prime$B) nanocrystals, with a stable cubic perovskite structure following a facile...

Cited by 8 publications

References 100 publications

Promising Potential of Nanostructured DyFeO3 Photocatalyst for Environmental Remediation: Authenticity and Stability

Promising Potential of Nanostructured DyFeO3 Photocatalyst for Environmental Remediation: Authenticity and Stability

Enabling Enhanced Photocatalytic Hydrogen Evolution in Water by Doping Cs2SnBr6 Perovskite with Pt

Composition-tunable structural and optical properties of dual-phase cesium tin bromide perovskite semiconductors

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Tuning the morphology, stability and optical properties of CsSnBr₃ nanocrystals through bismuth doping for visible-light-driven applications

Enabling Enhanced Photocatalytic Hydrogen Evolution in Water by Doping Cs₂SnBr₆ Perovskite with Pt