Synthesis of covellite (CuS) from the elements

Tezuka, Keitaro; Sheets, William C.; Kurihara, Ryoko; Shan, Yue Jin; Imoto, Hideo; Marks, Tobin J.; Poeppelmeier, Kenneth R.

doi:10.1016/j.solidstatesciences.2006.10.002

Cited by 79 publications

(57 citation statements)

References 19 publications

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“…Thus, the complete reaction between Cu and S needs higher temperature and/or long time milling. Because under hydrothermal condition even at low temperature, 60°C, with low vapor pressure, the reaction is completed, 4) the most important role of water is to enhance the diffusion of starting materials. For the reaction between Zn and S under hydrothermal condition, the effect of the diffusion by water is essential, although high vapor pressure at 240°C may also progress the reaction.…”

Section: Znsmentioning

confidence: 99%

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Simple synthesis of zinc sulfide and cadmium sulfide under hydrothermal conditions

Tezuka

Takagi

Shan

et al. 2011

J. Ceram. Soc. Japan

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Section: Znsmentioning

confidence: 99%

“…1) On the other hand, reaction in aqueous solution proceeds completely at room temperature. However, complex compounds such as CuSO 4 and Na 2 S must be used as starting materials because simple oxide or metal does not dissolve in water.…”

Section: Introductionmentioning

confidence: 99%

Simple synthesis of zinc sulfide and cadmium sulfide under hydrothermal conditions

Tezuka

Takagi

Shan

et al. 2011

J. Ceram. Soc. Japan

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“…Copper sulfides exist in a wide variety of compositions, ranging from copper-rich chalcocite (Cu 2 S) to copper-deficient villamaninite (CuS 2 ) with other intermediate compounds, in-between, such as covellite (CuS), djurleite (Cu 1.95 S), and anilite (Cu 1.75 S), among others. 12 Copper sulfides with various stoichiometries are important p-type semiconductors and have been extensively used in solar cells. 13,14 In this article, the acetic acid is used to swell and loose the molecule chain of polyacrylonitrile.…”

Section: Introductionmentioning

confidence: 99%

Effect of swelling pretreatment on the deposition structure on electroless copper of polyacrylonitrile nanocomposites for electromagnetic interference shielding

Chen¹,

Hung²,

Yang³

et al. 2008

J of Applied Polymer Sci

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In this investigation, the electroless copper method with various cupric sulfate concentrations (0.24, 0.36, 0.48, 0.60M) without sensitizing and activating is used to deposit electroless copper compounds (CuS) on the swelling pretreatment polyacrylonitrile(SPAN) surface for electromagnetic interference (EMI) shielding materials. The acetic acid can swell polyacrylonitrile (PAN) effectively which donot destroy the hexagonal structure of polyacrylonitrile, only looses the molecule chain of polyacrylonitrile then the hexagonal CuS crystal deposits on the SPAN easily, and increases the EMI shielding effectiveness (SE) of CuS-SPAN composites. However, the nearly amorphous of CuS deposits on the surface of without swelling pretreatment PAN(CuS-PAN). The EMI SE of CuS-SPAN composites are better than those of CuS-PAN, 10-15 dB larger from CuS-PAN. In the study, the best EMI SE of CuS-SPAN and CuS-PAN composites are about 30-35 dB and 18-20 dB respectively, as the cupric ion concentration is 0.48M. From the high resolution transmission electron micrographs(HR-TEM) analysis, there are two structures, face-centered cubic(FCC) Cu 2-x S crystal in the inner layer of CuS-SPAN composite and hexagonal CuS crystal on the outer layer of CuS-SPAN composite, in the SPAN as the cupric ion concentration is 0.48M. The particle size distribution of Cu 2-x S in the inner layer of CuS-SPAN is from 6 to 30 nm. However, the major particle size distribution of Cu 2-x S in the inner layer of CuS-SPAN is from 15 to 20 nm.

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“…As the first step of the examination, we chose the silver-and copper-sulfide system because their binary metal sulfides showed high reactivity in the processes of hydrothermal synthesis. 6), 8) The crystal structure and some properties of ternary metal sulfides containing silver and copper, AgCuS and Ag3CuS2 have been reported by Frueh 10) and Baker et al 11) respectively. AgCuS and Ag3CuS2 were prepared from stoichiometric mixture of Ag2S and Cu2S by using conventional silica tube techniques at 75°C for 72 h 12) and 277°C for 14 d 11) respectively.…”

Section: )-9)mentioning

confidence: 90%

Syntheses of complex sulfides AgCuS and Ag3CuS2 from the elements under hydrothermal conditions

Tokuhara

Tezuka

Shan

et al. 2009

J. Ceram. Soc. Japan

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The hydrothermal technique was applied to the syntheses of ternary metal sulfides, AgCuS and Ag3CuS2, using silver, copper, and sulfur powders as starting materials. AgCuS was obtained as a single phase when the starting ratio of Ag:Cu:S was 0.9:1.1:1 in water above 120°C for 10 h except for synthesis condition at 120°C for 60 h and inductively coupled plasma (ICP) analysis revealed that experimental silver and copper contents in products were Ag0.89Cu1.10S. At 120°C for 60 h, some unidentified peaks were observed in the powder X-ray diffraction (XRD) pattern and plate crystals of new compound were found in addition to AgCuS particles from the field emission scanning electron microscopy (FE-SEM) image. Pure Ag3CuS2 was also prepared by a simple reaction of stoichiometric silver, copper, and sulfur powders above 90°C, and the composition of products was Ag2.99Cu1.00S.

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Synthesis of covellite (CuS) from the elements

Cited by 79 publications

References 19 publications

Simple synthesis of zinc sulfide and cadmium sulfide under hydrothermal conditions

Simple synthesis of zinc sulfide and cadmium sulfide under hydrothermal conditions

Effect of swelling pretreatment on the deposition structure on electroless copper of polyacrylonitrile nanocomposites for electromagnetic interference shielding

Syntheses of complex sulfides AgCuS and Ag3CuS2 from the elements under hydrothermal conditions

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