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Sonochemical synthesis of PbWO(4) crystals with dendritic, flowery and star-like structures
Jun Geng1, Yinong Lv, Dujuan Lu
1Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People's Republic of China. Department of Chemistry, Jiangsu Institute of Education, Nanjing 210013, People's Republic of China.
Abstract:
Lead tungstate single crystals with dendritic, flowery and star-like structures have been prepared via a facile, ethylene glycol (EG)-assisted sonochemical method. The concentrations of EG and ultrasound irradiation were found to play crucial roles in the morphology control of the final products. The growth process was investigated by carefully following time-dependent experiments, and the oriented attachment process accompanying Ostwald ripening was proposed for the possible formation mechanism. The optical properties, such as the Raman spectra and photoluminescence (PL) spectra, of the obtained PbWO(4) crystals were studied.
