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Title: Investigation on synthesis, characterization and associated photocatalytic properties of transition metal (Mn & Ni) doped CdS and ZnS nanomaterials
Researcher: Elango M
Guide(s): Thamilselvan M
Keywords: Hexagonal wurtzite
Mn Ni Doped Cds
Transition Metal
Zinc blende
ZnS Nanomatrials
Upload Date: 16-Apr-2014
University: Anna University
Completed Date: December, 2012
Abstract: Nanodimensional state of the materials gain much attention among the recent day researchers owing to their appreciable physical and chemical properties. Their potential involvement and impartation in the recent day technologies promote them as the efficient candidate in the fabrication of electronic, optoelectronic, storage devices, phosphors and photocatalytic materials. For the past two decades they are intensively studied to explore their fundamental properties and to pave new path to the new technological dimensions. Among various materials namely, III-V, IV-VI and II-VI, the IIVI materials and their related alloys are most extensively imparted in investigations due to their versatile and noticeable properties. Variety of II-VI compound semiconductors are presently explored such as CdO, CdTe, CdSe, ZnSe, ZnMgTe, ZnO, HgS etc. In this respect, CdS and ZnS are regarded as most regarded and experimented materials on account of their extraordinary physical and chemical properties when they are in nanodimensional form. Their intrinsic properties can be widely altered when are imbibed with impurity atoms. The impurity atom are belonged to transition metal groups and they are considerably altered the physical and chemical properties of the host system. The CdS and ZnS nanomaterials are chosen as the host; Mn2+ and Ni2+ ions are selected as dopant elements. To enroll the impurity elements in the host matrices, wet chemical precipitation is utilized. The doping level is fixed as 5, 10 and 15 wt % and the medium is altered for the pH values 9.0, 10.0 and 11.0 using liquid ammonia. The wet chemical procedure under room temperature ambient is imposed to prepare Cd1-xMxS with x = 5, 10 and 15 wt % of M (M = Mn, Ni). The pH value of the medium is fixed at 9.0, 10.0 and 11.0. The obtained iv samples are subjected for their properties evaluation tests. The structural investigations are confirmed that Cd1-xMnxS and Cd1-xNixS express the cubic zinc blende and hexagonal wurtzite structure respectively.
Pagination: xxvii, 166 p.
Appears in Departments:Faculty of Science and Humanities

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01_title.pdfAttached File138.95 kBAdobe PDFView/Open
02_certificate.pdf1.09 MBAdobe PDFView/Open
03_abstract.pdf17.9 kBAdobe PDFView/Open
04_aknowledgement.pdf20.13 kBAdobe PDFView/Open
05_contents.pdf354.37 kBAdobe PDFView/Open
06_chapter1.pdf3.29 MBAdobe PDFView/Open
07_chapter2.pdf1.55 MBAdobe PDFView/Open
08_chapter3.pdf1.09 MBAdobe PDFView/Open
09_chapter4.pdf865.26 kBAdobe PDFView/Open
10_chapter5.pdf875.09 kBAdobe PDFView/Open
11_chapter6.pdf1.01 MBAdobe PDFView/Open
12-chapter7.pdf22.01 kBAdobe PDFView/Open
13-references.pdf776.52 kBAdobe PDFView/Open
14_publications.pdf99.19 kBAdobe PDFView/Open
15_ vitae.pdf25.29 kBAdobe PDFView/Open

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