Temperature Differential Analysis Research Articles

Highly Sensitive and Selective Gas Sensors Based on Metal Iodates: Material Characterization and Sensor Performance Evaluation.

This study proposes the possibility of employing metal iodates as novel gas-sensing materials synthesized using a facile chemical precipitation method. An extensive survey of a library of metal iodates reveals that cobalt, nickel, and copper iodates are useful for gas sensor applications. Material analysis conducted using scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, thermal gravity differential temperature analysis, and Raman spectroscopy enables us to understand the thermal behavior and optimize post-annealing conditions. The evaluation of the gas-sensing performance of the specified metal iodates indicates that all of them display p-type sensing behavior and exhibit a high gas response toward different gases: a gas response of 18.6 by cobalt iodate to 1.8 ppm of acetone, a gas response of 4.3 by nickel iodate to 1 ppm of NO2, and a gas response of 6.6 by copper iodate to 1.8 ppm of H2S. Further investigation of the temperature-programmed reduction of H2 and polarization-electric field hysteresis analyses elucidates that the high gas response originates from the inherent characteristics of metal iodates, such as the high oxygen-reduction ability of iodine, highlighting the potential of the iodates as novel gas-sensing materials.

Combinatorial approach to fabricate silica doped polyvinyl alcohol/hydroxyapatite/carrageenan nanocomposite for bone regeneration applications

AbstractBone tissue engineering is a dominating approach for the fabrication of nanocomposite bone implants with superior biocompatibility and low toxicity to the surrounding tissues. Here, in this report ternary nanocomposites integrating nanohydroxyapatite/κ‐carrageenan/silica doped polyvinyl alcohol in three different ratios, that is, 60/30/10 (HCP1), 60/20/20 (HCP2), and 60/10/30 (HCP3) was constructed and a binary system comprised of nanohydroxyapatite and κ‐carrageenan was also prepared for analyzing and comparing their bone regeneration potential. The samples were characterized by various physico‐chemical techniques such as infra‐red spectroscopy, which furnished details about structural functionalities and complex formation. Rough surface morphology and dispersed particle size distribution of developed nanocomposites were revealed by scanning electron microscopy and electron transmission microscopy, respectively. Thermogravimetric analysis and differential temperature analysis revealed higher thermal stability of HCP3 nanocomposite with total weight loss of 10% and X‐ray diffraction analysis revealed average crystallite size of 15 nm for HCP3 nanocomposite. Bioactivity and biocompatibility of fabricated nanocomposites were deduced with the help of biological techniques. HCP3 manifested cell viability above 100% at 2 μg/mL concentration and exhibited hemolysis below 3% at all tested concentration favoring cell growth with minimum cytotoxicity. HCP3 also exhibited efficient apatite layer deposition, optimum swelling ability and improved biodegradability (~30%) and anti‐bacterial activity predicting it as a promising nanocomposite implant for future orthopedic applications.

Effect of La3+ substitution on structural and magnetic parameters of Ni\u2013Cu\u2013Zn nano-ferrites

The ferrite material with compositions Ni0.7Cu0.1Zn0.2LaxFe2−xO4 (where x = 0, 0.015, 0.025, and 0.035) was synthesized by oxalate co-precipitation method. The ferrite samples were characterized by thermo-gravimetric and differential temperature analysis (TG–DTA), energy-dispersive X-ray analysis (EDAX), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), field-emission scanning electron microscopy (FE-SEM), and vibrating sample magnetometer (VSM) techniques. The EDAX analysis confirmed the formation of required stoichiometric ferrite samples. The formation of cubic spinel structure with the presence of weak ortho-ferrite phases was confirmed from X-ray diffraction analysis. The lattice constant of all the ferrites was found to be increase with increase in La3+ content. The presence of main two recognized strong absorption bands in the frequency range 400–600 cm−1 in the FTIR spectra shows the formation of well spinel ferrite. Morphological study shows that grain size of the ferrites lies in the range 16.23–24.21 nm. It is observed that the saturation magnetization and magnetic moment of Ni–Cu–Zn ferrites decrease with La3+ content.

Development of coordination polyureas derived from amine terminated polyurea and metal ions having 'd5', 'd7', 'd8' and 'd10' orbitals: From synthesis to applications.

Amine terminated polyureas [ATPUa] were synthesized by 'in situ' condensation polymerization of toluene diisocyanate (TDI) with equimolar ratio of ethylene diamine (ED) and water. Incorporating the completely half-filled {Mn(II) d5}, partially filled {Co(II) d7, Ni(II) d8} and fulfilled {Zn(II) d10} divalent metal ions in APTUa generated the coordination polyureas (CPa). The structure and geometry of resulting CPa was ascertained by spectral techniques, the Fourier transform (FTIR), UV-Visible and nuclear magnetic resonance (1H NMR) spectroscopy. Amorphous/semi-crystalline and rough/layered surface morphology was analyzed by X-ray diffraction analysis (XRD) and field emission scanning electron microscopy along with energy dispersive X-ray spectroscopy (FESEM/EDX). Good thermal stability was observed having the trend, ATPUa-Zn(II) > ATPUa-Mn(II) > ATPUa-Co(II) > ATPUa-Ni(II) > ATPUa [with IPDT values, 712 °C of ATPUa-Zn(II), 673 °C of ATPUa-Mn(II), 582 °C of ATPUa-Co(II), 563 °C of ATPUa-Ni(II), 488 °C of ATPUa] respectively. It was analyzed by thermo-gravimetric, differential thermal, differential scanning calorimetry and integral procedure decomposition temperature analysis (TGA/DTA/DSC/IPDT). Good adsorption/desorption behavior of CPa was analyzed with the help of batch adsorption techniques, and it was found that CPa {in order; ATPUa-Ni(II) > ATPUa-Mn(II)}can be used as effective dye adsorbent (up to 97%) for the waste water treatment. The CPa were screened for their in-vitro antimicrobial activity against six gram positive and three gram negative bacterial strains as compared to standard drug (Ciprofloxacin and Gentamicin) and moderate antimicrobial activity was observed.

Layered Double Hydroxides Derived ZnO‐Al2O3 Supported Pd‐Ag Catalysts for Selective Hydrogenation of Acetylene

AbstractZnO‐Al2O3 derived from layered double hydroxides (ZnAl‐LDH) was successfully applied for dispersion of Pd‐Ag bimetallic catalysts for the selective hydrogenation of acetylene to ethylene and the Pd‐Ag/ZnO‐Al2O3 catalyst showed the best catalytic performance among the prepared samples. It was found that the catalyst carrier of ZnO‐Al2O3 metal‐oxides derived form ZnAl‐LDH could significantly suppress the over‐hydrogenation of acetylene to obtain the relatively higher selectivity of ethylene. The introduction of Ag restricted efficiently the formation of coke because of the oligomerization reaction, which was further evidenced by thermal gravimetric analysis. The selectivity towards ethylene was in the order of Pd‐Ag/ZnO‐Al2O3>Pd/ZnO‐Al2O3>Pd‐Ag/Al2O3>Pd/Al2O3 at a high conversion level. As the thermal gravimetric and differential temperature analysis (TG‐DTA) revealed, Pd‐Ag intermetallic catalyst on the ZnO‐Al2O3 support showed less coke formation.

Perhydroxy-CB[6] decorated graphene oxide composite for uranium(VI) removal

We report the synthesis of perhydroxy-cucurbit[6]uril decorated graphene oxide composite [denoted as HO-CB[6]/graphene oxide (GO)] through a self-assembly process in dimethyl sulfoxide solvent. The obtained composite was characterized by transmission electron microscopy, thermogravimetric and differential temperature analysis, fourier transformed infrared spectroscopy, and XRD. HO-CB[6]/GO was used as an adsorbent for the removal of uranium(VI) from aqueous solution. The results showed that HO-CB[6]/GO exhibited a fast sedimentation velocity and a high adsorption capacity to uranium(VI). HO-CB[6]/GO could be a promising candidate as sorbent for uranium-bearing wastewater treatment.

Behaviour of neutron irradiated beryllium during temperature excursions up to and beyond its melting temperature

Beryllium pebble behaviour has been studied regarding the accidental operation conditions of tritium breeding blanket of fusion reactors. Structure evolution, oxidation and thermal properties have been compared for nonirradiated and neutron irradiated beryllium pebbles during thermal treatment in a temperature range from ambient temperature to 1600 K. For neutron irradiated pebbles tritium release process was studied. Methods of temperature programmed tritium desorption (TPD) in combination with thermogravimetry (TG) and temperature differential analysis (TDA), scanning electron microscopy (SEM) in combination with Energy Dispersive X-ray analysis (EDX) have been used. It was found that there are strong relation between tritium desorption spectra and structural evolution of neutron irradiated beryllium. The oxidation rate is also accelerated by the structure damages caused by neutrons.

Methodology for evaluating self-healing agent of structural ceramics

Simple methodology for evaluating availability of self-healing agent has been established from the investigation on the relationship between oxidation behavior of self-healing agent and self-healing phenomena. The consistency of the established methodology was discussed by comparison in the lower bound of the available temperature range ( TH-low) of mullite/TiSi2 composite. From thermo-gravity and differential temperature analysis, the available temperature range for 10-h healing ([Formula: see text]) was estimated to be 563°C. On the other hand, the value of the lower bound of the available temperature range for 10-h healing ([Formula: see text]) was experimentally determined to be 600°C from strength recovery tests. These values showed a good consistency. Also, the data on 1-h healing of mullite/TiSi2 and the reference data on alumina/SiC self-healing ceramics exhibited good consistency. Therefore, the proposed methodology is sufficient for evaluating the advanced healing agent.

Non-aggregated divanadium pentoxide nanoparticles: A one-step facile synthesis. Morphological, structural, compositional, optical properties and photocatalytic activities

In the present paper, pure phase and well-dispersed divanadium pentoxide nanoparticles (V2O5 NPs) with a orthorhombic structure were synthesized via the reverse microemulsion process and using low-cost NH4VO3 as the starting material in the absence of any co-surfactant. The synthetic method is facile, fast, low reaction temperature, environmental friendly, and easy controlled preparation condition. The structure, morphology and optical properties of these particles were characterized by field emission scanning electron microscope (FE-SEM), transmission electron microscopy (TEM), energy dispersive analysis of X-ray (EDAX), X-ray diffraction (XRD), thermo-gravimetric analysis (TGA), differential temperature analysis (DTA), fourier transform infrared spectroscopy (FT-IR), ultraviolet–visible absorption spectroscopy (UV–Vis), and photoluminescence (PL) spectroscopy. The synthesized NPs were found to be fully crystalline and spherical in shape with uniform distribution. The mean crystallite size of the V2O5 NPs was estimated by X-ray powder diffraction pattern, which was in close agreement with the particles size obtained by TEM analysis. Optical properties of the nano-structured V2O5 are also tested and discussed. The band gap value of the V2O5 NPs is about 2.93eV calculated by UV–Vis spectroscopy. Considerable emissions due to oxygen vacancies and band transition of PL peaks were observed. In addition, the photocatalytic activities of these particles were evaluated by photodegradation of toluidine blue O (TBO) dye under visible light irradiation.

Synthesis of two new Nickel and CopperNickel vanadates used for propane oxidative dehydrogenation

Two new vanadates have been successfully synthesized by the hydrothermal and coprecipitation methods. Both vanadates were calcined at 600 °C and the resulting catalysts were tested on reaction of oxidative dehydrogenation of propane. The catalysts were characterized by x-ray diffraction, atomic absorption, thermogravimetric analysis, and differential temperature analysis. The reaction was carried out in the temperature range of 350-500 °C. A conversion of propane of 10.6 % and a selectivity towards propene of 29.9 % at 400 °C were obtained with nickel vanadate; a conversion of 1.9 % and a selectivity of 56.9 % were reached at the same temperature with the nickel copper vanadate.

Preparation and Characterization of Nanoporous Silica Aerogel Granules on The Basis of Water Glass Via Ambient Pressure Drying Method

A crack-free silica aerogel monolith is a nanostructured material with so many surprising properties such as high specific surface area, high porosity, low dielectric constant, low density and outstanding heat insulation properties that were fabricated from a cheap water glass derived silicic acid solution.In this research , the OH surfaces of the wet gel were modified using a HMDZ/n-hexane or TMCS/n-hexane mixture followed by solvent exchange from water to n-hexane. The obtained surface modified wet gel was dried at different temperature under ambient pressure.The properties of hydrophobic silica aerogels synthesized by this new route were investigated by scanning electron microscopy (SEM), differential temperature analysis (DTA) and Fourier-transform infrared spectroscopy (FT-IR).The results showed that 20 wt% HMDZ as surface modifier and 75 °C as drying temperature resulted an acceptable hydrophobic silica aerogel with the density of 0.15 gr/cm³ and specific surface area of about 520 m²/gr.

Chitosan-assisted combustion synthesis of CuO–ZnO nanocomposites: Effect of pH and chitosan concentration

CuO–ZnO nanocomposites were synthesized via a chitosan-assisted solution combustion method. The effects of pH and chitosan concentration on the physicochemical properties of the CuO–ZnO nanocomposites have been investigated. Thermal behavior, morphological structures, surface composition, crystal type and specific surface area of the products were characterized by means of thermal gravimetric and differential temperature analysis, scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction and N2-sorption analysis, respectively. Without the use of chitosan, CuO and ZnO particles were separately formed while CuO and ZnO crystallite sizes tended to be decreased with increasing the pH value. Chitosan was found to not only induce a homogeneous mixture of CuO–ZnO nanocomposites but also prevent the growth of CuO and ZnO nanoparticles. Moreover, chitosan also acted as a fuel which promoted the formation of CuO and ZnO nanoparticles at lower temperature.

In situ thermolysis of magnetic nanoparticles using non-hydrated iron oleate complex

A novel strategy for the fabrication of nanostructured materials based on preparation of metallic surfactants is presented and some examples are demonstrated in this article. The suggested synthetic procedure of metal oleate is universal, potentially able to produce bulk quantities, and can be applicable to the synthesis of other metal oxide and metal nanoparticles. In general, organometallic com- pounds are quite expensive and are mostly classified as a highly toxic substance. In this study, we used simple, inexpensive, and eco-friendly approaches to prepare the metallic surfactants. As an example, non-hydrated iron oleate (FeOl) complexes are prepared as precur- sors for the in situ-fabricated superparamagnetic iron oxide nanoparticles (SPIONs) by thermolysis. The different coordination of the non-hydrated FeOl complexes are directly relating to the competition between nucleation and crystal growth. The in situ preparation of SPIONs involves the reaction of metal nitrate and carboxylic acid at 120 C to synthesize the non-hydrated FeOl complexes and following the thermolysis of FeOl at 300 C in non-coordination solvent. The coordination modes and distinct thermal behaviors of intermediates non-hydrated FeOl com- plexes are comparatively investigated by means of thermo-analytic techniques complimented by differ- ential scanning calorimetry, thermal gravimetric anal- ysis (TGA) and infrared spectroscopy (FTIR). The potential chemical structures of non-hydrated FeOl and their reaction mechanism by thermolysis were elucidated. The resulting lipid-coated SPIONs were characterized by transmission electron microscope, FTIR, differential temperature analysis, and TGA. These data suggested a bimodal interaction of organic shell and nanoparticle surface, with chemically absorbed inner layer and physically absorbed outer layer of carboxylic acid.

Shape-controlled synthesis of lead zirconate titanate nanocrystallites, microrods, microrolls and 3D complex architectures via the effects of poly-vinylalcohol macromolecular conformation

Shape-controlled synthesis of tetragonal PbZr0.52Ti0.48O3 (PZT) perovskite nanocrystallites, microrolls, microrods and 3D complex architectures composed of microroll-bundles or microrod-bundles were realized via a hydrothermal reaction route by simply adjusting the poly-vinylalcohol (PVA) and KOH concentrations. X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), differential temperature and thermogravimetric analysis (DTA and TG) were used to characterize the phase composition, morphology and thermal behaviors of the synthesized samples. In order to investigate the effect of PVA on the shape-controlled synthesis of the tetragonal PZT perovskite particles, a series of experiments were performed by changing the PVA and KOH concentration. Based on the experimental results, the formation mechanisms of tetragonal PZT perovskite particles with various shapes and the effects of the PVA macromolecular conformation are discussed.

Solidus surface of the Al–Ti–Pd system in the Al–AlPd–TiPd–Ti region

The Al–Ti–Pd system has been studied by microstructural analysis, electron microprobe analysis, x-ray diffraction, and differential temperature analysis in the composition range 0–50 at.% Pd (Al–AlPd–TiPd–Ti partial system) at subsolidus temperatures. The solidus surface of the system is constructed for the first time. At subsolidus temperatures, there are two ternary compounds, τ1 (Al61Ti26Pd13, AuCu3 type) and τ3 (Al44Ti35Pd21, MgZn2 type), a continuous solid solution (β0 phase) between isostructural (CsCl type) high-temperature modifications of AlPd and TiPd equiatomic phases, and terminal solid solutions based on β-Ti and α-Ti and TiAl, Ti2Al5, TiAl3, and Al3Pd2 binary compounds and e phase. The above-mentioned phases participate in 11 four-phase invariant equilibria involving the liquid phase and are represented by isothermal tie-line triangles in the temperature range between 630 and 1205°C.

Supported and Free‐Standing Sulfonic Acid Functionalized Mesostructured Silica Films with High Proton Conductivity

AbstractSulfonic acid functionalized silica films with 2D‐hexagonal mesostructures of various channel sizes are prepared in a one‐step synthesis. A successful combination of in situ oxidation of a mercapto‐functionalized silane with an evaporation induced self‐assembly (EISA) process in the presence of amphiphilic block copolymers allows the formation of a highly structured material with a sulfonation degree of 33 %. Analysis of the mesostructure by a combination of XRD, grazing‐incidence small‐angle X‐ray scattering (GI‐SAXS), and TEM shows that 2D‐hexagonally ordered mesostructured films are obtained by optimization of the surfactant to silica precursor ratio. The tuneability of the mesochannel size is demonstrated by the use of three different surfactants. The complete oxidation of the mercapto group to sulfonic acid is confirmed by Fourier transform infrared spectroscopy (FTIR). The thermal stability of the material is investigated by coupled thermogravimetric analysis, differential temperature analysis, and mass spectrometry (TGA‐DTA‐MS). Alternating current (AC) impedance analysis of humidified samples shows high proton conductivity of up to 0.18 S cm–1 at 60 °C and 95 % relative humidity.

Selective hydrogenation of acetylene over Pd catalysts supported on nanocrystalline α-Al2O3 and Zn-modified α-Al2O3

The catalytic performance of Pd catalysts supported on nanocrystalline α-Al 2 O 3 and Zn-modified α-Al 2 O 3 prepared by sol–gel and solvothermal methods was studied in the selective hydrogenation of acetylene. Acidity of the nanocrystalline α-Al 2 O 3 was significantly decreased by incorporation of Zn atoms in the α-Al 2 O 3 . Both of acetylene conversions and ethylene selectivities were improved in the order: Pd/Zn-modified α-Al 2 O 3 -sol–gel > Pd/Zn-modified α-Al 2 O 3 -solvothermal > Pd/α-Al 2 O 3 -sol–gel ≈ Pd/α-Al 2 O 3 -solvothermal >> Pd/α-Al 2 O 3 -commerical. As revealed by thermal gravimetric and differential temperature analysis (TG-DTA), Pd catalysts on the nanocrystalline Zn-modified α-Al 2 O 3 also showed less deactivation by coke formation.

Reduction behavior of iron oxides in hydrogen and carbon monoxide atmospheres

The hydrogen reduction behavior of Fe 2 O 3 , Fe 3 O 4 and FeO is strongly influenced by time–pressure dependent process. The reduction of hematite takes place according to scheme: 3Fe 2 O 3 → 2 Fe 3 O 4 → 6 FeO → 6 Fe. The same pathway of hydrogen reduction for magnetite and wüstite is postulated. First, reduction of magnetite to wüstite Fe 3 O 4 → FeO and second step of wüstite disproponation 4FeO → Fe 3 O 4 + Fe. Only after the disappearance of Fe 2 O 3 phase, the reduction of Fe 3 O 4 to Fe can be observed. The appearance of FeO crystal phase as an intermediate compound of iron(III) oxide reduction was experimentally confirmed by XRD method above 560 °C. The complete reduction of hematite into metallic iron phase can be accomplished even at low temperature of up to 380 °C. The reduction of various iron oxides in hydrogen and carbon monoxide atmospheres has been investigated by temperature programmed reduction (TPR H2 and TPR CO ), thermo-gravimetric and differential temperature analysis (TG-DTA-MS), and conventional and “ in situ ” XRD methods. Five different compounds of iron oxides were characterized: hematite α-Fe 2 O 3 , goethite α-FeOOH, ferrihydrite Fe 5 HO 8 ·4H 2 O, magnetite Fe 3 O 4 and wüstite FeO. In the case of iron oxide-hydroxides, goethite and ferrihydrite, the reduction process takes place after accompanying dehydration below 300 °C. Instead of the commonly accepted two-stage reduction of hematite, 3 α-Fe 2 O 3 → 2 Fe 3 O 4 → 6 Fe, three-stage mechanism 3Fe 2 O 3 → 2Fe 3 O 4 → 6FeO → 6Fe is postulated especially when temperature of reduction overlaps 570 °C. Up to this temperature the postulated mechanism may also involve disproportionation reaction, 3Fe 2+ ⇌ 2Fe 3+ + Fe, occurring at both the atomic scale on two-dimensional interface border Fe 3 O 4 /Fe or stoichiometrically equivalent and thermally induced, above 250 °C, phase transformation—wüstite disproportionation to magnetite and metallic iron, 4FeO ⇌ Fe 3 O 4 + Fe. Above 570 °C, the appearance of wüstite phase, as an intermediate of hematite reduction in hydrogen, was experimentally confirmed by “ in situ ” XRD method. In the case of FeO–H 2 system, instead of one-step simple reduction FeO → Fe, a much more complex two-step pathway FeO → Fe 3 O 4 → Fe up to 570 °C or even the entire sequence of three-step process FeO → Fe 3 O 4 → FeO → Fe up to 880 °C should be reconsidered as a result of the accompanying FeO disproportionation wüstite ⇌ magnetite + iron manifesting its role above 150 °C and occurring independently on the kind of atmosphere—inert argon or reductive hydrogen or carbon monoxide. The disproportionation reaction of FeO does not consume hydrogen and occurs above 200 °C much easier than FeO reduction in hydrogen above 350 °C. The main reason seems to result from different mechanistic pathways of disproportionation and reduction reactions. The disproportionation reaction wustite ⇌ magnetite + iron makes simple wüstite reduction FeO → Fe a much more complicated process. In the case of thermodynamically forced FeO disproportionation, the oxygen sub-lattice, a closely packed cubic network, does not change during wüstite → magnetite transformation, but the formation of metallic iron phase requires temperature activated diffusion of iron atoms into the region of inter-phase FeO/Fe 3 O 4 . Depending on TPR H2 conditions (heating rate, velocity and hydrogen concentration), the complete reduction of hematite into metallic iron phase can be accomplished at a relatively low temperature, below 380 °C. Although the reduction behavior is analogical for all examined iron oxides, it is strongly influenced by their size, crystallinity and the conditions of reduction.

Structural Effects of Heat-Treated Silica Xerogel Induced by Incorporation of Chlorophyll Species

Composites containing chlorophyll aggregates dispersed in amorphous silica are of interest because of their optical attractive properties. The silica powders added with chlorophyll species, prepared by the sol-gel method, were studied using X-ray diffraction, IR spectroscopy and differential temperature analysis. Silica xerogel samples were prepared using an ethanol/H2O/TEOS molar ratio of 4:11.6:1 and loaded with extracts from frozen spinach leaves. The silica xerogel microstructure of the powders was studied as a function of the annealing temperature. We found in our samples partial crystallization of the glass matrix in form of tridymite and cristobalite phases and quenching centers or nonfluorescing aggregates due to denaturation of photosystem promoted by chlorophyll decomposition after400∘C.

Spray pyrolytic synthesis of samarium doped ceria (Ce 0.8Sm 0.2O 1.9) films for solid oxide fuel cell applications

Uniform, adherent, single phase samarium doped ceria films have been successfully deposited by spray pyrolysis technique for their application in solid oxide fuel cell. These films have been deposited at different substrate temperatures on glass substrate and subsequently heat treated in tube furnace. Effect of substrate temperature and annealing temperature on phase formation was studied with thermo-gravimetric analysis and differential temperature analysis, X-ray diffraction, scanning electron microscope, and energy dispersive X-ray analysis techniques. These studies showed the formation of single phase Ce 0.8Sm 0.2O 1.9 films, at substrate temperature 400 °C and annealing temperature 550 °C. Electrical resistivity of the films, at room temperature was of the order of 10 7 Ω cm while at 400 °C it is found to be of the order of 10 1 Ω cm. This reveals the use of these films for making low temperature solid oxide fuel cells.