Introduction: The development of an effective method regarding chromium removal from the environment is of great importance. Therefore, the present study aimed to examiner magnetic nanoparticles coated with alumina modified by Cetyl Trimethyl Ammonium Bromide (CTAB) in the removal of Cr6+ through magnetic solid phase extraction method. Materials & Methods: At first, iron oxide nanoparticles ...

To reduce the formation of detrimental complex oxides, bond coatings in thermal barrier for gas turbines are typically fabricated using vacuum plasma spraying (VPS) or high-velocity oxygen fuel (HVOF) process. Herein, VPS and HVOF processes were applied NiCoCrAlY + HfSi-based powder to assess oxidation behavior both coating processes. Each coated sample was subjected 50 cyclic heat treatments a...

Carbon nitride (CNx) is a light-absorber with excellent performance in photocatalytic suspension systems, but the activity of CNx photoelectrodes has remained low. Here, cyanamide-functionalized (NCNCNx) was co-deposited ITO nanoparticles on 1.8 Å thick alumina-coated FTO electrode. Transient absorption spectroscopy and impedance measurements support that acts as conductive binder improves elec...

The paper presents the application of Closed Hollow Cathode Physical Vapor Deposition (CHC-PVD) method for depostion Ti-Al-Cr-Y-Si coatings on ?-TiAl 48-2-2 alloy high temperature oxidation protection. study concerned analysis coating’s growth mechanism, initial microstructure as well phase transformations investigations using resolution Scanning Transmission Electron Microscopy (STEM) and X-ra...

The goal of this work is to demonstrate that high performance solar reflective material can be produced in a roll format using vacuum deposition techniques. The material consists of a multilayer thin film stack on a substrate. The essential feature of the film stack is an alumina film several microns thick deposited over a silver film. The alumina film is deposited under high vacuum using a phy...

a simple, selective and efficient solid phase extraction method based on the use of  γ-alumina nanoparticles coated with sodium dodecyl sulfate (sds) and modified with 2-​(5-​bromo-​2-​pyridylazo)​-​5-​(diethylamino) ​phenol (5-br-padap) as a new adsorbent was developed for the separation and preconcentration of trace amounts of manganese (ii) prior to determination by flame atomic absorption s...