Sol–gel synthesis of DyCrO₃and 10% Fe-doped DyCrO₃nanoparticles with enhanced photocatalytic hydrogen production abilities

Abstract

DyFe0.1Cr0.9O3 nanoparticles calcined at 700 °C demonstrate superior photocatalytic ability compared to that of DyCrO3 nanoparticles calcined at the same temperature.

MoS2 nanosheet incorporated α-Fe2O3/ZnO nanocomposite with enhanced photocatalytic dye degradation and hydrogen production ability

“…After each run, the residue nanomaterial was extracted from the solution and again used as photocatalyst in the next photodegradation cycle. [6] The photocatalytic performance of UMS incorporated α-Fe 2 O 3 /ZnO in degradation of ciprofloxacin was also evaluated by following the same experimental technique. [10] A photocatalytic hydrogen production experiment was conducted using typical method as was described in details in our previous investigation.…”

“…[8][9][10] Especially, nanoparticles of metal oxide semiconductors have achieved significant research interest in the last few decades compared to their bulk counterparts because of their high surface to volume ratio which enables a plenty of photons to be incident upon the surface. [6,11] In the past decades, titanium dioxide (TiO 2 ) (bandgap ∼ 3.2 eV) has been studied the most as a semiconductor photocatalyst because of its low production cost, high chemical stability and non-toxic attributes. [12,13] Recently, zinc oxide (ZnO), an ntype semiconductor oxide photocatalyst has emerged as a suitable alternative to TiO 2 since it possesses almost same bandgap energy (∼ 3.37 eV) [14] but exhibits higher quantum and absorption efficiency when compared to TiO 2 .…”

Nanostructured LaFeO3-MoS2 for efficient photodegradation and photocatalytic hydrogen evolution

“…However, with a further increment in calcination temperature to 800 • C, the surface morphology was considerably improved and the degree of agglomeration was reduced to a moderate extent albeit at the cost of slightly increased particle size. Such reduction in agglomeration might be due to the enhancement of total specific surface area and the free energy of the system, whereas the increment in particle size can be imputed to the increased crystal growth rate of the particles at elevated temperature [30,39,42]. The size distribution histogram in Fig.…”

“…The chemical reagents used were analytical grade lanthanum nitrate hexahydrate [La(NO 3 ) 3 .6H LaFeO 3 nanoparticles were synthesized by a citrate based sol-gel technique [3,30].…”

“…Therefore, in the present investigation, we have synthesized LaFeO 3 nanoparticles via a facile sol-gel method [3,30] and incorporated it with ultrasonically exfoliated few-layer MoS 2 nanosheets by adapting a low-temperature hydrothermal synthesis technique [27,31,32] to investigate comprehensively the photodegradation and photocatalytic hydrogen evolution efficiency of LaFeO 3 -MoS 2 nanocomposite. Interestingly, LaFeO 3 -MoS 2 has outperformed both LaFeO 3 and commercial Degussa P25 TiO 2 nanoparticles in the photodecomposition of a textile dye, rhodamine B (RhB) in aqueous solution as well as solar H 2 generation via water splitting.…”