Issue 26, 2022

Organic bromide-assisted one-pot synthesis of Bi2S3 nanorods using DMSO as a sulfur supply

Abstract

Metal sulfide semiconductor nanorods have attracted much attention because of their potential use as a photo-responsive component of optical/electrical devices. In the present study, we report a simple solvothermal method of the Bi2S3 nanorod synthesis exploiting dimethyl sulfoxide (DMSO) as both a solvent and a sulfur source in the presence of an organic bromide such as tetraethylammonium bromide (Et4NBr). The organic bromide conducts dual roles; it promotes the decomposition of DMSO to produce reactive sulfur species and reacts with Bi species to produce an intermediate product of bismuth oxybromide (BiOBr) that reacts further with the sulfur compounds. These dual roles of organic bromide facilitate the synthesis of Bi2S3 nanorod without extra sulfur sources. The production of Bi2S3 nanorods is successful when the organic bromide is used, but not when KBr is used, and is dependent upon the amount of organic bromide. With controlled parameters of reaction temperature and time, production of BiOBr intermediates and growth of Bi2S3 nanorod from the surface of BiOBr are observed along with the identification of the organic sulfur–Bi complexes during the synthesis. Based on the experimental outcomes, the process of the Bi2S3 nanorod synthesis is proposed. The synthesized Bi2S3 nanorods have a band gap energy of 1.5 eV along with a photoresponse time of 920 ms, thus demonstrating semiconductor photosensitivity.

Graphical abstract: Organic bromide-assisted one-pot synthesis of Bi2S3 nanorods using DMSO as a sulfur supply

Supplementary files

Article information

Article type
Paper
Submitted
24 Apr 2022
Accepted
06 Jun 2022
First published
06 Jun 2022

CrystEngComm, 2022,24, 4713-4722

Organic bromide-assisted one-pot synthesis of Bi2S3 nanorods using DMSO as a sulfur supply

S. Lee, M. S. Kim, H. Lee and S. Lee, CrystEngComm, 2022, 24, 4713 DOI: 10.1039/D2CE00568A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements