i-manager's Journal on Material Science (JMS)


Volume 10 Issue 1 April - June 2022

Research Paper

Synthesis of SrBaFexMo2-xO6 (X=1.0, 1.1, 1.3 and 1.4) Double Perovskites by Sonication: Characterization and Electron Spin Resonance Studies

S. Varaprasad* , G. Laxminarayana**, M. Ramana***, A. Ramachander Rao****, L. Koteswara Rao*****
* Electro-Optical Instrument Research Academy, Vignyanakancha, Hyderabad, Telangana, India.
**-**** Research Centre Imarat, Vignyanakancha, Hyderabad, Telangana, India.
***** Koneru Lakshmaiah University, Hyderabad, Telangana, India.
Varaprasad, S., Laxminarayana, G., Ramana, M., Rao, A. R., and Rao, L. K. (2022). Synthesis of SrBaFexMo2-x O6 (X=1.0, 1.1, 1.3 And 1.4) Double Perovskites by Sonication: Characterization and Electron Spin Resonance Studies. i-manager’s Journal on Material Science, 10(1), 1-8.

Abstract

This paper presents influence of ultrasound-assisted method on structure, tolerance factor, density and Electron spin resonance studies of SrBaFexMo2-xO6 (x = 1.0, 1.1, 1.3 and 1.4) (SBFMO) double perovskite. SrBaFexMo2-xO6 double perovskite was synthesized by sonochemical procedure at low temperature (9500C) under Ar/ H2 atmosphere. X-ray diffraction studies revealed a single phase with a cubic crystal structure for all the samples. The existence of all elements (Sr, Ba, Fe, Mo, O) contamination-free in the required percentage in SBFMO compound has been analyzed by Energy Dispersive X-ray Spectroscopy (EDS). Goldschmidt Tolerance factor 't' has been used to quantitatively predict the stability and closeness of A2BxB12-xO6. Density measurements for all samples of SrBaFexMo2-xO6 (x = 1.0, 1.1, 1.3 and 1.4) were done both theoretically and experimentally. Electron Spin Resonance (ESR) spectra of SrBaFexMo2-xO6 (x = 1.0, 1.1, 1.3 and 1.4) were studied to determine the iron state in the compound by varying magnetic field at a constant frequency (X-Band).

Research Paper

Experimental Results from a Two-Wheeler Fuel Tank with Natural Fiber Composite

P. Krishnaa* , B. Nitin**, A. Ponshanmugakumar***, B. Karthikeyan****
*-**** Sri Sai Ram Institute of Technology, Chennai, Tamilnadu, India.
Krishnaa, P., Nitin, B., Ponshanmugakumar, A., and Karthikeyan, B. (2022). Experimental Results from a Two-Wheeler Fuel Tank with Natural Fiber Composite. i-manager’s Journal on Material Science, 10(1), 9-17.

Abstract

The creation of composite materials has resulted in significant advances in material history. The mechanical characteristics and SEM (Scanning Electron Microscopy) analysis of Bamboo-Kenaf fibre reinforced epoxy composites are explored in this work, as well as the design and analysis of this composite fibre for usage as an application in automobile seat bases. Testing was used to identify the treated status of the sample fibres. The treated specimen has improved mechanical characteristics over the untreated specimen. The fundamental goal of this effort is to shift away from non-biodegradable materials and towards the use of biodegradable materials for the benefit of the environment and humans while retaining their original characteristics.

Research Paper

Direct Removal of Nitrate and Phosphate Anions Together in a Continuous Fixed Bed Column down Flow Technique

K. Mohan Reddy* , Amit Kumar**, Samarth Pratap Singh***
*-** Department of Chemistry, Applied Science Cluster, University of Petroleum and Energy Studies (UPES), Bidholi campus, Dehradun, Uttarakhand, India.
*** Department of Chemistry, The University of Manchester, United Kingdom.
Reddy, K. M., Kumar, A., and Singh, S. P. (2022). Direct Removal of Nitrate and Phosphate Anions Together in a Continuous Fixed Bed Column down Flow Technique. i-manager’s Journal on Material Science, 10(1), 18-23.

Abstract

Synthetic adsorbent was used for the direct removal of nitrate and phosphate anions from aqueous solution. Synthetic absorbent was prepared in laboratory using different processes, which have high adsorption capacities for effective removal of selected ions in a column chromatography. Chitosan-reduced graphene-SiO2 in a column was used as a potent adsorbent for this selected method and final results were compared with another approach using chitosan-SiO2 in a Photo Catalytic Reactor (PCR). PCR process is easier, but the removal efficiency is less when compared with the Fixed Bed Column (FBC). The removal percentage using fixed bed column with a potent adsorbent was greater than 60% whereas it is less than 35% using photocatalytic reactor. Adsorption of nitrate and phosphate from aqueous solutions on both photocatalytic reactor and continuous fixed-bed column are studied with effects of various parameters such as contact time, dosage of adsorbent and pH of the aqueous solutions. Absorbents were fabricated using sol-gel for nano silica, chitosan and thermal heating method for reduced graphene oxides. Out of these, fixed bed columns with chitosan-reduced graphene oxide - SiO2 performed better when compared with the chitosan-SiO2 in a photocatalytic reactor.

Research Paper

Adsorptive Removal of Indigo Carmine Dye using Activated Carbon: Kinetic and Isotherm Study

Manjunath S. V.* , Pratheek C. N.**
*-** Department of Civil Engineering, BMS College of Engineering, Bangalore, India.
Manjunath, S. V., and Pratheek, C. N. (2022). Adsorptive Removal of Indigo Carmine Dye using Activated Carbon: Kinetic and Isotherm Study. i-manager’s Journal on Material Science, 10(1), 24-30.

Abstract

In this study the removal of Indigo Carmine (IC) dye by batch adsorption using Commercial Activated Carbon (CAC) was carried out. The characterization of adsorbent was done by Structural Engineering and Materials (SEM) and Energy Dispersive X-Ray Analysis (EDX) to know the surface morphology and various elements present in the adsorbent. The operational parameters such as contact time (0-120 min), adsorbent dose (0.1-1g/L) and initial dye concentration (25-150 mg/L) was varied to know the effect of removal of indigo carmine dye from aqueous solution. The adsorption data was compared with various kinetic models as pseudo-first-order, pseudo-second-order, intra-particle diffusion, liquidfilm diffusion and Elovich models and isotherm models such as Langmuir, Freundlich, Temkin, Elovich and Dubinin and Radushkevich models. The optimum contact time and adsorbent dose was found to be 40 min and 0.8 g/L, respectively. The experimental data best fitted the pseudo-second-order kinetic model with R2 > 0.99 and Langmuir isotherm model (R2 = 0.997). The Langmuir's maximum adsorption capacity (qm) was 28.74 mg/g.

Research Paper

Study on Supplementary Cementitious Materials for Sustainable Development of Concrete

Samreen Bano* , Farheen Bano**, Syed Aqeel Ahmed***
*-*** Department of Civil Engineering, Integral University, Lucknow, Uttar Pradesh, India.
**Faculty of Architecture and Planning, AKTU, Lucknow, Uttar Pradesh, India.
Bano, S., Bano, F., and Ahmed, S. A. (2022). Study on Supplementary Cementitious Materials for Sustainable Development of Concrete. i-manager’s Journal on Material Science, 10(1), 31-39.

Abstract

Modern society makes extensive use of concrete for construction. The demand for concrete is increasing daily as a result of the expansion of urbanization and industrialization. To produce concrete, a lot of raw materials and natural resources are needed. A significant quantity of industrial waste, agricultural waste, and other types of solid material disposal are simultaneously creating significant environmental problems. The use of artificial wastes as supplementary materials, the source of which are both reliable and suitable for alternative preventive solutions, promotes the environmental sustainability of the industry by minimizing and reducing the negative effect of the concrete industry due to the explosive usage of raw materials. Recent use of such products to be utilized as a partial replacement for Portland cement (PC) in cementitious systems is investigated in terms of material qualities and the extent to which they can be replaced in cementitious systems. In particular, Supplementary Cementitious Materials (SCM) can improve material qualities such as flowability, strength and durability. Conventional concrete was utilized as the design mix proportion, with 10%, 20%, 30%, and 40% of the cement being replaced with industrial waste such as fly ash and hypo sludge. The test's 30% replacement level produced the best compressive stress when waste paper was used, where strength is less important or where the construction is only expected to be used temporarily, and design mix proportions up to 40% replacement can also be used. The optimal level of Rice Husk Ash (RHA) replacement in concrete is 10%, which has been shown to significantly increase compressive strength at 28 days when compared to the control mix. It reveals that the Palm Oil Fuel Ash (POFA) concrete, used as a concrete control in this investigation, has a higher compressive strength than Ordinary Portland Cement (OPC) Concrete. This paper examines the potential application of industrial and agricultural wastes as additional cementitious material in the manufacture of concrete. It focuses on describing the engineering, physical, and chemical properties of these wastes to demonstrate the concept of using them. This gives an overview of the knowledge that is now available regarding the successful use of synthetic wastes in the concrete industry, including fly ash, slag, silica fume, rice husk ash, palm oil fuel ash, sugar cane bagasse ash, wood waste ash, and bamboo leaf ash.