Iron ore occurrences are situated on the south-eastern slopes of the Medvednica Mountain. They occur as discontinous, decameters long and 2-3.5 m thick bedded, poorly mineralized (15-35 % Fe) lenses. A narrow, 6 km long, ore zone strikes NE-SW from Tisova Peć to Pustodol-Adolfovac. It is spatially and genetically bounded to the basic volcanogenic-sedimentary series (SEDEX-type), metamorphosed i...

10 Heterogeneous photodegradation of pentachlorophenol (PCP) in the goethite 11 (α-FeOOH) and hematite (α-Fe2O3) systems with oxalate under UVA illumination was 12 investigated. The PCP degradation, dechlorination and detoxification, in terms of 13 Microtox acute toxicity, were achieved to the higher efficiency in the hematite 14 suspension than in the goethite suspension. The optimal initial c...

An electrokinetic study of the adsorption of a glucocorticoid drug, betamethasone disodium phosphate (BMP), on hematite (alpha-Fe2O3) particles is presented in this work. We analyze the electrophoretic mobility of both spherical and elongated hematite as a function of the concentration of BMP in the dispersion medium; it is found that, even for the lowest BMP concentration, the drug molecules a...

lung tumors of different histologies and apparent sites of origin. Hematite-210Po produces combined epidermoid and adenocarcinomas in the peripheral lung, while BP-hematite produces mainly epidermoid carcinomas of the major bronchi and trachea. To determine whether cells in the lung are differentially sensitive to the two types of carcinogen or whether the carcinogens are reaching and acting at...

lung tumors of different histologies and apparent sites of origin. Hematite-210Po produces combined epidermoid and adenocarcinomas in the peripheral lung, while BP-hematite produces mainly epidermoid carcinomas of the major bronchi and trachea. To determine whether cells in the lung are differentially sensitive to the two types of carcinogen or whether the carcinogens are reaching and acting at...

In order to obtain reliable kinetic parameters, it is required to measure the reaction kinetics of important heterogeneous reactions at ambient relative humidity (RH). In this study, the uptake coefficients and HONO yields for the heterogeneous reaction of NO2 on kaolin and hematite were measured at RH from 7% to 74% and at ambient pressure in the dark using a coated-wall flow tube reactor. The...

The composition, structure, and thickness of n-dodecyl-β-D-maltoside self-assembled layers on hematite have been evaluated using infrared external reflection spectroscopy and spectral simulation techniques. From the qualitative and quantitative analysis of the reflection spectra of the same sample recorded at different specific angles of incidence and two polarizations, the orientation of the s...

A new nanocomposite architecture is reported which combines prolate spheroidal hematite nanoparticles with drug-carrying layered double hydroxide [LDH] disks in a single structure. Spindle-shaped hematite nanoparticles with average length of 225 nm and width of 75 nm were obtained by thermal decomposition of hydrothermally synthesized hematite. The particles were first coated with Mg-Al-NO3-LDH...

Fluorine doped tin oxide (FTO) is widely used as a substrate in the synthesis of a photo-reactive semiconductor electrode for solar water splitting. The hematite film on the surface of the FTO substrate annealed at 700 °C showed an enhanced photocurrent value with a maximum photocurrent of 0.39 mA cm(-2) at 1.23 V vs. RHE under 1 sun illumination. This is a much enhanced photocurrent value of t...

Understanding how nano-dimensionality impacts iron oxide based catalysis is central to a wide range of applications. Here, we focus on hematite nanosheets, nanowires and nanoparticles as applied to catalyze the reverse water gas shift (RWGS) probe reaction. We introduce a novel approach to synthesize ultrathin (4-7 nm) hematite nanosheets using copper oxide nanosheets as a hard template and pro...