Oct 1, 2018 · The photocatalysis performance of Fe 2 O 3 nanotubes, FeS 2 nanotubes and FeS 2 microparticles on methylene blue and phenol were studied using a UV spectrophotometer. Fig. 23 (d) showed the photodegradation performances of the three catalysts on phenol.

The optical properties of stoichiometric iron pyrite (FeS2) nanocrystals (NCs) are characterized by strong UV-Visible (UV-Vis) absorption within the cutoff while negligible absorption beyond...

Oct 1, 2018 · Iron pyrite (FeS 2) with high purity synthesized by solvothermal method. Excellent solar absorbance up to whole spectrum is observed by UV-Vis spectra. Photoluminescence (PL) shows high intensity with better optoelectronic properties no surface defects.

Scanning electron microscopy investigations show that the synthesized FeS2 NPs have a spherical shape and the average particle size of FeS2 decreased from 30 to 14 nm when a magnetic field...

Aug 1, 2014 · The optical band gap energy and electro-chemical band gap energy of the synthesized FeS 2 were investigated by UV–vis spectrophotometry and cyclic voltammetry. Finally band gap engineered FeS 2 has been successfully used in conjunction with conjugated polymer MEHPPV for harvesting solar energy.

Recently, FeS 2-TiO 2 NCs were explored as a novel photocatalyst to harvest the light in the region from UV to near-infrared (NIR) for application in energy storage and conversion. 33 FeS 2 NPs with a small bandgap (~0.95 eV) have been utilized as efficient light harvesters to enhance the absorption from UV to NIR. 34 FeS 2-TiO 2 NCs also ...

Results: In TiO2-FeS2 NCs, FeS2 NPs, as light harvesters, can effectively increase light absorption from the visible (Vis) to near-infrared (NIR).

Dec 2, 2022 · UV–Vis spectroscopy in Figure 4A provides the absorption properties of the prepared FeS#1, FeS#2, and FeS#3 nanoparticles. The fundamental absorption edge of the three prepared materials was calculated from the absorption spectra of the three samples.

Jan 31, 2013 · Earth-abundant iron pyrite (FeS 2) nanocrystals show great potential in broad photosensing applications due to their high photoabsorption coefficient (>10 5 cm −1) and ideal bandgap (0.95 eV). However, broad spectral photodetectors using the FeS 2 nanojunctions and external stimuli-driven photoresponse have not been demonstrated yet.

The results confirmed the highly absorbing character of the pyrite FeS2 and also the presence, in the explored spectral range (UV-Visible) of two competitive transitions : the first at 1.31 eV (indirect gap) and the second at 1.45 eV (direct gap).