Green solution synthesis of Bi19S27I3 nanostructures: engineering their morphology through polyethylene glycol and their use in the photocatalytic reduction of Cr(vi)

Dublin Core

Title

Green solution synthesis of Bi19S27I3 nanostructures: engineering their morphology through polyethylene glycol and their use in the photocatalytic reduction of Cr(vi)

Subject

NANOTECNOLOGIA
CROMO
BISMUTO
BIBLIOGRAFIA NACIONAL QUIMICA
2024

Abstract

Bismuth-based chalcohalides have garnered significant attention over the past five years due to their promising optoelectronic properties, and applicability in photodetection, ionizing radiation detection, photocatalysis, and solar cells. Among these compounds, Bi19S27I3 stands out as a novel material with relatively unexplored synthesis and properties. In this study, we introduce a green synthesis approach for Bi19S27I3 nanostructures, employing the hot injection method under mild conditions with water as the solvent. By utilizing polyethylene glycol (PEG) as a capping agent with molar proportions [PEG : Bi] 0.5 : 1, 1 : 1 and 2 : 1 and adjusting the reaction time (5 min or 270 min), we successfully controlled the morphology, yielding either round nanoparticles, nanorolls, or a combination of both. For instance, longer reaction times such as 270 min enhance the crystallinity of the material and also encourage morphology uniformity, while PEG favors a rounded morphology. Our findings underscore the significant capping effect of PEG, particularly evident in the photocatalytic activity of Bi19S27I3 towards Cr(VI) reduction. Through this facile and efficient synthesis strategy, we tailored the morphology of Bi19S27I3 and demonstrated its efficacy in Cr(VI) photocatalysis, achieving a remarkable 91% reduction for the nanoroll-based sample with PEG: Bi [1 : 1]. This innovative approach not only provides an environmentally friendly method for synthesizing Bi19S27I3 but also highlights its potential as an effective photocatalyst for environmental remediation.

Creator

Mombrú-Frutos, Maia Ivana
Viera, Martina
Grosso, Carolina
Rodriguez Chialanza, Mauricio
Fornaro, Laura
Pérez Barthaburu, María Eugenia
Aguiar, Ivana

Source

Journal of Materials Chemistry C, v. 12, nº 41, 2024. -- pp. 16843-16853

Publisher

Royal society of Chemistry

Date

2024

Rights

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Format

PDF

Extent

11 p.

Language

Inglés

Type

Artículo

Identifier

10.1039/D4TC01480D

Document Item Type Metadata

Original Format

PDF
Date Added
December 16, 2024
Collection
Bibliografía Nacional Química
Item Type
Document
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Citation
Mombrú-Frutos, Maia Ivana et al., “Green solution synthesis of Bi19S27I3 nanostructures: engineering their morphology through polyethylene glycol and their use in the photocatalytic reduction of Cr(vi),” RIQUIM - Repositorio Institucional de la Facultad de Química - UdelaR, accessed November 17, 2025, https://riquim.fq.edu.uy/items/show/6854.