Iris Publishers - Global Journal of Engineering Sciences (GJES)

Impact of V2O5 and Gamma Ray Irradiation on The Optical and Structural FTIR Spectra of Lithium Phosphate Glass

Authored by MA Ouis


Combined studies on prepared undoped lithium phosphate glass of the composition (Li2O330-P2O570 mol%) and derived samples containing additional dopants of V2O5 (0.4, 1, 2, 3, 4%). The glasses have been investigated using optical (UV-visible) and FTIR spectra before and after being gamma irradiated with a dose of 6 M rad (6x104 Gy). The collective spectral properties have been employed to explore the states of vanadium ions in this specific host phosphate glass. The study extends to identify the impact of gamma ray’s irradiation on the glasses with and without V2O5. The optical spectrum of the undoped lithium phosphate glass shows distinct UV absorption which is accepted by many researchers to be due to unavoidable contaminated trace ferric ions while the absorption of the V2O5- doped samples exhibit additional bands within the visible region which are correlated with combined presence of lower valences of trivalent and tetravalent vanadium ions. Gamma irradiation on the undoped glass increases the UV absorption and produces an induced visible broad band and this behavior is related to some suggested photochemical reaction and the formation and induced visible of phosphorus oxygen hole center (POHC) band while the vanadium ions show some shielding behavior with the maintenance of the spectral curves as before irradiation in the visible region. The FITR spectra show pronounced and condensed vibrational peaks within the mid region due to Q2 and Q3 phosphate groups beside few peaks due to OH, POH and water vibrations.


To read more about this article: https://irispublishers.com/gjes/fulltext/impact-of-v2o5-and-gamma-ray-irradiation-on-the-optical-and-structural-ftir-spectra.ID.000570.php

To know more about Journals: Iris Publishers

To know ISSN Number of Iris Publishers

Comments

Post a Comment

Popular posts from this blog

Gully Erosion and Landslides in Southeastern Nigeria: Causes, Consequences and Control Measures

Image
  Abstract In southeastern Nigeria, soil and gully erosion and landslides are responsible for the widespread destructions of human, animal and plant lives, domestic, industrial and commercial property, transportation and communication systems, degradation of arable lands, contamination of surface and groundwater supplies, isolation of settlements and migration of communities. This account presents some of the results of research and studies of gully erosion and landslides carried out over the years in parts of southeastern States of Abia, Anambra, Enugu, Ebonyi and Imo States. Gully erosion is attributed to natural and anthropogenic causes, with the latter being most prevalent. Gully initiation is the result of localized erosion by surface runoff and soil eluviation associated with rainfall events of high intensity. Erosion is frequently concentrated where the forest cover has been removed for agricultural, urbanization and construction purposes and also at sites of u...
Read more

Iris Publishers

  Biological Processes In Urban Mines Authored by Navarro Hidalgo Keywords: Critical elements; Microorganisms; Urban mines; Biological processes; Recycling Introduction The innovation and development of high technology have demanded the exploration of some chemical elements in greater quantity. These elements have physicochemical properties of high economic interest. Some countries have larger amounts of the reserves of these elements, creating an imbalance in world supply. An example of the use of these materials are rare earth elements widely used in equipment with greater energy efficiency and magnets in wind generators. They are also present in increasingly modern computers, cell phones and televisions. Given this reality, thiswork proposes to recover critical elements from alternative sources (electronic waste - REE) using a biological process as a tool for  solubilization of waste elements with subsequent recovery. The proposed technique is bio-hydrometallurgy, already...
Read more

Importance of technology acceptance assessment for successful implementation and development of new technologies

Introduction It is significant to note that user acceptance and confidence are crucial for further development of any new technology [1,2]. Businesses have facilitated or planning to facilitate their business platform to increase personnel efficiency, marketing improvement, cost reduction and increase profitability. Therefore, recognition the needs and acceptance of individuals is the beginning stage of any businesses and this understanding would be helpful to find the way of future development [3-5]. In general, acceptance is defined as “an antagonism to the term refusal and means the positive decision to use an innovation” [6-8]. Decision makers need to know the issues that influence on users’ decision to use a particular system, so they would be able to take them into account during the development phase [7,8]. Several researches developed theories and models to describe and analyze user acceptance and each of these models determines different factors to explain user acceptance ...
Read more