Novel, Microwave Assisted Route of Synthesis of Binary Oxide Semiconducting Phases – PbMoO4 And PbWo4 / Nowa Metoda Syntezy Binarnych Faz Tlenkowych O Charakterze Półprzewodnikowym W Polu Mikrofalowym – PbMoO4 I PbWo4

Archives of Metallurgy and Materials

T. Tokarski¹  K. Szaciłowski¹  P. Kwolek¹  T. Łokcik¹ 

[1] AGH UNIVERSITY OF SCIENCE AND TECHNOLOGY, FACULTY OF NON-FERROUS METALS, 30-059 KRAKÓW, AL. MICKIEWICZA 30, POLAND

关键词: Keywords: lead molybdate;    lead tungstate;    semiconductor;    band gap;    microwave assisted synthesis;   

DOI  :  10.2478/v10172-012-0176-3

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

Highly crystalline powders of lead molybdate and tungstate were synthesized by a microwave assisted hydrothermal process in a microwave heated high pressure autoclave. Application of this novel and environmentally friendly technique in the synthesis of these compounds has never been reported before. The influence of a time of synthesis on a crystal structure, morphology and a value of a band gap for both PbMoO4 and PbWO4 was examined. The value of the band gap was determined using diffuse reflectance spectroscopy. For lead molybdate the medium value of the band gap equals to ca. 3.2 eV whereas for lead tungstate it oscillates around 4 eV and does not depend on the duration time of the synthesis.

【 授权许可】

Unknown