Bismuta un cinka volframāta fotokatalizatoru sintēze un fotokatalītiskās aktivitātes novērtējums
Date
2013
Authors
Didrihsone, Sabīne
Journal Title
Journal ISSN
Volume Title
Publisher
Latvijas Universitāte
Abstract
Bismuta un cinka volframātu fotokatalizatoru sintēze un fotokatalītiskās aktivitātes novērtējums. Didrihsone S., darba vadītāji Dr. habil. sc. ing. Jānis Grabis un Dr.chem., prof. Andris Actiņš. Maģistra darbs. 53 lappuses, 37 attēli, 8 tabulas, 47 literatūras avoti. Latviešu valodā.
Maģistra darbā uz literatūras datu analīzes pamata attīstītas Bi2WO6 un ZnWO4 nanodaļiņu hidrotermālā, mikroviļņu, sola-gela un kausēto sāļu sintēzes metodes, kā arī noteiktas iegūto pulveru īpašības atkarībā no sintēzes režīma. Sintezētajiem volframātu paraugiem veikta īpatnējās virsmas analīze, rentgenfāžu analīze. Bismuta un cinka volframātu fotokatalītiskās īpašības pārbaudītas metilēnzilā ūdens šķīduma sadalīšanā. Augsta fotokatalītiskā aktivitāte noteikta ar hidrotermālo un sola-gela metodēm sintezētam Bi2WO6, kā arī ar hidrotermālo un mikroviļņu metodēm sintezētam ZnWO4.
Bismuth and zinc tungstate photocatalyst synthesis and assessment of their photocatalytic activity. Didrihsone S., supervisors Dr. habil. sc. ing. Grabis J. and Dr. chem., prof. Actiņš A., 53 pages, 37 figures, 8 tables, 47 literature references. In Latvian. The synthesis methods such as hydrothermal, microwave, sol-gel and molten salt synthesis method of Bi2WO6 and ZnWO4 nanoparticles preparation have been developed. The properties of differently obtained samples have been studied and tested. All synthesized nanopowder samples were characterized using specific surface area, phase content, crystallite size and particle morphology. Photocatalysis tests were performed using methylene blue decomposition under UV irradiation. High photocatalytic activity shows Bi2WO6 and ZnWO4 samples obtained with hydrothermal, microwave and sol-gel methods.
Bismuth and zinc tungstate photocatalyst synthesis and assessment of their photocatalytic activity. Didrihsone S., supervisors Dr. habil. sc. ing. Grabis J. and Dr. chem., prof. Actiņš A., 53 pages, 37 figures, 8 tables, 47 literature references. In Latvian. The synthesis methods such as hydrothermal, microwave, sol-gel and molten salt synthesis method of Bi2WO6 and ZnWO4 nanoparticles preparation have been developed. The properties of differently obtained samples have been studied and tested. All synthesized nanopowder samples were characterized using specific surface area, phase content, crystallite size and particle morphology. Photocatalysis tests were performed using methylene blue decomposition under UV irradiation. High photocatalytic activity shows Bi2WO6 and ZnWO4 samples obtained with hydrothermal, microwave and sol-gel methods.
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