Influence of the synthesis media in the properties of CuO obtained by microwave-assisted hydrothermal method

被引：19

作者：

Maul, J. ^{[1
]}

Brito, A. S. ^{[1
]}

de Oliveira, A. L. M. ^{[1
]}

Lima, S. J. G. ^{[2
]}

Maurera, M. A. M. A. ^{[1
]}

Keyson, D. ^{[1
]}

Souza, A. G. ^{[1
]}

Santos, I. M. G. ^{[1
]}

机构：

[1] Univ Fed Paraiba, Dept Quim, CCEN, LACOM INCTMN, Joao Pessoa, Paraiba, Brazil

[2] Univ Fed Paraiba, LSR, Depto Engn Mecan CT, Joao Pessoa, Paraiba, Brazil

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2011年 / 106卷 / 02期

关键词：

CuO; Microwave-assisted hydrothermal method; Reduction; CUPRIC OXIDE; FABRICATION; NANOSTRUCTURES; LIQUID; ROUTE; CU2O;

D O I：

10.1007/s10973-011-1476-y

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Copper monoxide (CuO) was successfully obtained by microwave-assisted hydrothermal method, using different conditions-in a solution without base, in a solution alkalinized with NaOH or with NH(4)OH. The powders were analyzed by thermal analysis (TG/DTA), X-ray diffraction (XRD), infrared spectroscopy, UV-Visible spectroscopy, and scanning electronic microscopy. XRD results showed that CuO was obtained with monoclinic structure and without secondary phases. Thermal analysis and infrared spectra indicated the presence of acetate groups on the powder surface. TG curves also showed a mass gain assigned to the Cu(I) oxidation indicating that a reduction possibly occurred during synthesis. The high and broad absorption band in the UV-Vis spectroscopy from 250 to 750 nm indicated the coexistence of Cu(II) and Cu(I), confirming the Cu(II) reduction, inside the CuO lattice. It was also possible to confirm the Cu(II) reduction by a displacement of the Me-O vibration bands observed in the IR spectra at around 500 cm(-1).

引用

页码：519 / 523

页数：5

共 16 条

[1]

[Anonymous], 1993, SOLID STATE CHEM SYN

[2] Fabrication of nanowire-like cuprous oxide in aqueous solutions of a triblock copolymer [J].

Chang, Xiaofeng ;

Ji, Guangbin ;

Shen, Kai ;

Pan, Lijia ;

Shi, Yi ;

Zheng, Youdou .

JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 482 (1-2) :240-245

[3] Fabrication of Cu nano particles by direct electrochemical reduction from CuO nano particles [J].

Han, WK ;

Choi, JW ;

Hwang, GH ;

Hong, SJ ;

Lee, JS ;

Kang, SG .

APPLIED SURFACE SCIENCE, 2006, 252 (08) :2832-2838

[4] CuO urchin-nanostructures synthesized from a domestic hydrothermal microwave method [J].

Keyson, D. ;

Volanti, D. P. ;

Cavalcante, L. S. ;

Simoes, A. Z. ;

Varela, J. A. ;

Longo, E. .

MATERIALS RESEARCH BULLETIN, 2008, 43 (03) :771-775

[5] Infrared reflection study of CuO in thin oxide films [J].

Lefez, B ;

Souchet, R ;

Kartouni, K ;

Lenglet, M .

THIN SOLID FILMS, 1995, 268 (1-2) :45-48

[6] Synthesis of BaMoO4 nestlike nanostructures under a new growth mechanism [J].

Luo, Zhijun ;

Li, Huaming ;

Shu, Huoming ;

Wang, Kun ;

Xia, Jiexiang ;

Yan, Yongsheng .

CRYSTAL GROWTH & DESIGN, 2008, 8 (07) :2275-2281

[7] Microwave-assistant synthesis of ordered CuO micro-structures on Cu substrate [J].

Min, YuLin ;

Wang, Tao ;

Chen, YouCun .

APPLIED SURFACE SCIENCE, 2010, 257 (01) :132-137

[8] Dynamic study of the oxidation state of copper in the course of carbon monoxide oxidation over powdered CuO and Cu2O [J].

Nagase, K ;

Zheng, Y ;

Kodama, Y ;

Kakuta, J .

JOURNAL OF CATALYSIS, 1999, 187 (01) :123-130

[9] Synthesis of Cu2O nano-whiskers by a novel wet-chemical route [J].

Qu, Yuling ;

Li, Xinyong ;

Chen, Guohua ;

Zhang, Huanjun ;

Chen, Yongying .

MATERIALS LETTERS, 2008, 62 (6-7) :886-888

[10] Synthesis and characterization of CuO flower-nanostructure processing by a domestic hydrothermal microwave [J].

Volanti, D. P. ;

Keyson, D. ;

Cavalcante, L. S. ;

Simoes, A. Z. ;

Joya, M. R. ;

Longo, E. ;

Varela, J. A. ;

Pizani, P. S. ;

Souza, A. G. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2008, 459 (1-2) :537-542

← 1 2 →