Facile synthesis of water-soluble silver nanoclusters for the photocatalytic degradation of dyes by multivariate optimization approach

“…7(d) indicates a lower charge transfer resistance compared to that of CSB, demonstrating the highest charge transfer efficiency. [68][69][70] 3.1.6 Analyzing band-edge positions. To assess the potentiality of CSB and CSB ′ B samples in a practical application i.e., the photocatalytic dye degradation, at rst, the band edge positions were estimated by adopting the Mulliken electronegativity approach.…”

Section: Paper Nanoscale Advancesmentioning

confidence: 99%

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

Adib

Sharmin

Basith

2023

Preprint

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In this investigation, we have demonstrated the synthesis of lead-free, CsSnBr3 (CSB) and 5 mol% bismuth (Bi) doped CSB (CSB′B) nanocrystals, with a stable cubic perovskite structure following a facile hot injection technique. The Bi substitution in CSB was found to play a vital role in reducing the size of the nanocrystals significantly, from 316±93 to 87±22 nm. Additionally, Bi doping has inhibited the oxidation of Sn2+ of CSB perovskite. A reduction in the optical band gap from 1.89 to 1.73 eV was observed for CSB′B and the PL intensity was quenched due to the introduction of Bi3+ dopant. To demonstrate one of the visible-light-driven applications of the nanocrystals, photodegradation experiments were carried out as a test case. Interestingly, under UV-vis irradiation, the degradation efficiency of CSB′B is roughly one order lower than that of P25 titania nanoparticles, however, it is almost five times higher when driven by visible light under identical conditions. Moreover, by employing experimental parameters, DFT-based first-principles calculations were performed, which demonstrated an excellent qualitative agreement between experimental and theoretical outcomes. The as-synthesized Bi-doped CSB might be a stable halide perovskite with potential in visible-light-driven applications.

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Stirring‐Controlled Synthesis of Ultrastable, Fluorescent Silver Nanoclusters

Cybulski,

Quintana,

Siek

et al. 2024

Small

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This paper describes how macroscopic stirring of a reaction mixture can be used to produce nanostructures exhibiting properties not readily achievable via other protocols. In particular, it is shown that by simply adjusting the stirring rate, a standard glutathione‐based method—to date, used to produce only marginally stable fluorescent silver nanoclusters, Ag NCs—can be boosted to yield nanoclusters retaining fluorescence for unprecedented periods of over 2 years. This enhancement derives not simply from increased homogenization of the reaction mixture but mainly from an appropriately timed delivery of oxygen from above the reaction mixture. In effect, oxygen serves as a reagent that dictates size, structure, stability, and functional properties of the growing nanoobjects.

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Facile synthesis of water-soluble silver nanoclusters for the photocatalytic degradation of dyes by multivariate optimization approach

Abstract: Silver nanocluster protected by natural tripeptide ligand (GSH@Ag NCs) were constructed for photo-catalyst dye degradation in this study. The ultra-small GSH@Ag NCs were found to exhibit remarkably high degradation. Aqueous...

Cited by 5 publications

References 69 publications

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

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

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

Stirring‐Controlled Synthesis of Ultrastable, Fluorescent Silver Nanoclusters

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Facile synthesis of water-soluble silver nanoclusters for the photocatalytic degradation of dyes by multivariate optimization approach

Abstract: Silver nanocluster protected by natural tripeptide ligand (GSH@Ag NCs) were constructed for photo-catalyst dye degradation in this study. The ultra-small GSH@Ag NCs were found to exhibit remarkably high degradation. Aqueous...

Cited by 5 publications

References 69 publications

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

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

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

Stirring‐Controlled Synthesis of Ultrastable, Fluorescent Silver Nanoclusters

Contact Info

Product

Resources

About

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

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