Change search
ReferencesLink to record
Permanent link

Direct link
A simple hydrothermal route for the preparation of HgS nanoparticles and their photocatalytic activities
Show others and affiliations
2014 (English)In: RSC Advances, ISSN 2046-2069, Vol. 4, no 30, 15371-15376 p.Article in journal (Refereed) Published
Abstract [en]

HgS nanoparticles have been successfully prepared by a hydrothermal method using polyethylene glycol (PEG) as stabilizing agent and characterized by a variety of methods. Our experiments confirmed that the size of the HgS nanocrystals could be easily modified by tuning the chain length of PEG. X-ray powder diffraction (XRD) results for the nanoparticles revealed the hexagonal structure of the HgS, i. e. a-phase known as cinnabar. Morphological studies performed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) showed that the synthesized nanocrystals were nanoparticles. Furthermore, a rational mechanism of the formation and evolution of the products was proposed. The optical properties of HgS were investigated by diffuse reflectance spectroscopy (DRS), which indicated that the band gap of the nanoparticles is slightly decreased from 2.05 to 2.00 eV as the average particle size decreases from 55 to 35 nm. Furthermore, the photocatalytic activity studies of the particles demonstrated their excellent photocatalytic performance in rapidly degrading aqueous methylene blue dye solution under visible light irradiation. These results suggest that HgS nanoparticles will be an interesting candidate of photocatalyst working in visible light range.

Place, publisher, year, edition, pages
2014. Vol. 4, no 30, 15371-15376 p.
National Category
Chemical Sciences
URN: urn:nbn:se:su:diva-104023DOI: 10.1039/c4ra00483cISI: 000334276600007OAI: diva2:719955


Available from: 2014-05-27 Created: 2014-05-27 Last updated: 2014-05-27Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Tai, Cheuk-Wai
By organisation
Department of Materials and Environmental Chemistry (MMK)
In the same journal
RSC Advances
Chemical Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 29 hits
ReferencesLink to record
Permanent link

Direct link