Scalable Mesoporous Platinum Diselenide Nanosheet Synthesis in Water

Ali Umar Akrajas, Siti Khatijah Md Saad, Muhamad Mat Salleh

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Newly discovered two-dimensional (2D) atomic crystals (nanosheet) of platinum diselenide (PtSe2) have progressively attracted attention due to their expected high performance in catalysis, sensing, electronics, and optoelectronics applications. Further extraordinary physicochemical properties are expected if these nanosheets of platinum diselenide can possess mesoporosity as this may enable a high range of molecular adsorption, enhancing their functionalities in catalysis, batteries, supercapacitors, and sensing. Here, we present for the first time a straightforward, aqueous-phase synthetic strategy for the preparation of scalable nanosheets of platinum diselenide with mesoporous structure via a surfactantlated self-assembly followed by a thermal annealing phase-transformation process. We used hexamethylenetetramine as a hexagonal honeycomb (sp2-sp3 orbital) scaffold for assembling the Pt and Se organic complexes to form the nanosheet structure, which is stable, preserving the 2D structure and mesoporosity during a thermal annealing at 500 °C. Density functional theory analysis then indicated that the mesoporous nanosheets of platinum diselenide exhibit a high free-energy and large density of electrons crossing the Fermi level, inferring a high-catalytic performance. This effortless strategy is currently being extended to the synthesis of other transition metal dichalcogenides, including the preparation of multi-metal atomic dichalcogenide nanosheets, for a wide variety of scientific and technological applications.

Original languageEnglish
Pages (from-to)3325-3332
Number of pages8
JournalACS Omega
Volume2
Issue number7
DOIs
Publication statusPublished - 31 Jul 2017

Fingerprint

Nanosheets
Platinum
Water
Catalysis
Methenamine
Annealing
Fermi level
Scaffolds
Optoelectronic devices
Self assembly
Free energy
Transition metals
Density functional theory
Electronic equipment
Phase transitions
Metals
Adsorption
Crystals
Electrons

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

Scalable Mesoporous Platinum Diselenide Nanosheet Synthesis in Water. / Akrajas, Ali Umar; Md Saad, Siti Khatijah; Mat Salleh, Muhamad.

In: ACS Omega, Vol. 2, No. 7, 31.07.2017, p. 3325-3332.

Research output: Contribution to journalArticle

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