Óxido de zinco dopado com gálio preparado pelo método Pechini

Abstract

Óxido de zinco dopado com gálio (ZnO:Ga) foi preparado pelo método Pechini a partir de citrato de zinco e hidróxido de gálio. Utilizsando este método, foi possível obter ZnO:Ga cristalino pela calcinação do precursor polimérico em ar a 900ºC por 4 horas. A resina homogênea contendo 2% de dopante só pôde ser obtida com a adição de ácido etilenodiaminotetracético (edta). A adição do edta, também, ocasionou a diminuição de tamanho de partícula do óxido.

Influence of Inductive Effect in Organic Residuals Content in IZO Thin Films and the Performance on the Behavior of MIS Capacitors on Plastic

“…For the ZnO thin film, the stretching modes of Zn-O at 428 and 572 cm −1 were observed [14][15][16]. At 677 cm −1 , the COO-bond related to the overlapping of σ and π of the ligand was found [17,18]. Finally, symmetric (1421 cm −1 ) and asymmetric (1531 cm −1 ) C-O bonds and O-H groups were observed at 1636 cm −1 [14,19].…”

Assembly and characterization of ZnO nanoparticles for Grätzel's solar cells

“…ZnO NPs can be obtained with different grain sizes depending on the method of synthesis. Some methods used are: electroplating [13][14][15][16][17], hydrothermal [18][19][20], sonochemical [21], sol-gel [22][23][24], Pechini [25][26][27][28][29], spray pyrolysis [3], wet chemical [30] and zinc-air system [31]. For this research, the chosen synthesis methodology was the Pechini Method (PM), due to the possibility of producing nanoparticles with good homogeneity, optical and structural characteristic, inexpensive reagents, moderate temperatures and easy process control.…”

Optical and structural characteristics of ZnO nanopowders for different preparation methods

“…Zinc oxide (ZnO) is an inorganic semiconductor compound extensively used in several materials and products including: plastic, ceramic, glass, cement, rubber, lubricant and photo-electrovoltaic devices including also the medical area [1][2][3][4][5][6][7][8][9][10][11][12][13]. For this reason, there is a great demand for new information for scrutiny about this material formed from synthesis methods and analyzed through its optical, electrical and morphological characteristics.…”

“…New methods of synthesis could lead to obtaining ZnO NPs with different grain sizes. In the preparation of ZnO some techniques are included as: Pechini [1][2][3][4][5][6], wet chemical [7], Sol-Gel [18][19][20][21][22][23], electroplating [24][25][26][27], sonochemical [28], hydrothermal [29][30][31], zinc-air system[32] and spray pyrolysis [33].…”