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| Content Provider | IET Digital Library |
|---|---|
| Author | Haque, Sk Ershadul Ramdas, Balan Padmavathy, Nagarajan Sheela, Angappan |
| Abstract | Nanocadmium sulphide (CdS) has been prepared by the one-pot solid-state method from cadmium chloride (CdCl2) and sodium sulphide (Na2S) without any capping agent. The grinding period plays a major role in transforming CdS from the cubic (zinc blende) to the hexagonal (wurtzite) phase, hitherto unreported at the lowest temperature of 200°C by the solid-state approach. The compounds are characterised by powder X-ray diffraction, UV–visible absorption spectroscopy, scanning electron microscopy and high resolution transmission electron microscopy techniques. On the basis of the results, it has been observed that with only grinding and without subsequent heat treatment, the compounds named with their grinding period as subscript have either zinc blende – CdS(30 min) or mixed zinc blende/wurtzite – CdS(2,4, 6 and 8 h) structures. However, when subjected to heat treatment at 200°C, there is a complete phase transformation to the wurtzite structure achieved only with the CdS(8 h) compound, while the rest of the compounds show similar phases as the compounds prepared without annealing. The photocatalytic efficiency of CdS compounds on methyl orange follows the order, CdS(cubic) > CdS(mixed phase → cubic + hexagonal) > CdS(hexagonal), with cubic phase CdS showing greater efficiency than mixed and hexagonal phases. |
| Starting Page | 731 |
| Ending Page | 735 |
| Page Count | 5 |
| Volume Number | 9 |
| e-ISSN | 17500443 |
| Issue Number | Issue 10, Oct (2014) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/mnl/9/10 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/mnl.2014.0167 |
| Journal | Micro & Nano Letters |
| Publisher Date | 2014-10-17 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Cadmium Chloride Cadmium Compound Constant-composition Solid-solid Phase Transformations Cubic-hexagonal Phase Transformation Facile One-pot Low-temperature Solid-state Method Grinding Grinding Period Heat And Thermomechanical Treatments Heat Treatment High Resolution Transmission Electron Microscopy II-VI SemiConductor Method of Nanofabrication And Processing Methyl Orange Mixed Zinc Blende-wurtzite Structure Nanocadmium Sulfide Nanofabrication Nanometre-Scale Semiconductor Fabrication Technology NanoParticle Nanostructured Material Nanotube And Nanostructured Material Phase Transformation Photocatalytic Efficiency Polymorphic, Massive, And Order-disorder Powder X-Ray Diffraction Scanning Electron Microscopy Sodium Sulfide Solid-solid Transitions Solid-state Phase Transformations Structure of Solid Clusters Temperature 200 DegC Transmission Electron Microscopy Ultraviolet Spectra UV–visible Absorption Spectroscopy Visible And Ultraviolet Spectra of II-VI And III-V SemiConductor Visible Spectra Wide Band Gap SemiConductor X-Ray Diffraction |
| Content Type | Text |
| Resource Type | Article |
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