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  2. Copper(II) oxide - Wikipedia

    en.wikipedia.org/wiki/Copper(II)_oxide

    Copper (II) oxide or cupric oxide is an inorganic compound with the formula CuO. A black solid, it is one of the two stable oxides of copper, the other being Cu 2 O or copper (I) oxide (cuprous oxide). As a mineral, it is known as tenorite, or sometimes black copper. It is a product of copper mining and the precursor to many other copper ...

  3. Copper nanoparticle - Wikipedia

    en.wikipedia.org/wiki/Copper_nanoparticle

    A copper nanoparticle is a copper based particle 1 to 100 nm in size. [1] Like many other forms of nanoparticles, a copper nanoparticle can be prepared by natural processes or through chemical synthesis. [2] These nanoparticles are of particular interest due to their historical application as coloring agents and the biomedical as well as the ...

  4. Nanoparticle - Wikipedia

    en.wikipedia.org/wiki/Nanoparticle

    A nanoparticle or ultrafine particle is a particle of matter 1 to 100 nanometres (nm) in diameter. [1][2] The term is sometimes used for larger particles, up to 500 nm, or fibers and tubes that are less than 100 nm in only two directions. [2]: 394 At the lowest range, metal particles smaller than 1 nm are usually called atom clusters instead.

  5. Copper oxide - Wikipedia

    en.wikipedia.org/wiki/Copper_oxide

    Copper oxide is any of several binary compounds composed of the elements copper and oxygen. Two oxides are well known, Cu 2 O and CuO, corresponding to the minerals cuprite and tenorite, respectively. Paramelaconite (Cu4O3) is less well characterized. [1]

  6. Photocatalysis - Wikipedia

    en.wikipedia.org/wiki/Photocatalysis

    Photocatalysis. 2) disc, exciting electrons within the material. These then react with the water molecules, splitting it into its constituents of hydrogen and oxygen. In this experiment, chemicals dissolved in the water prevent the formation of oxygen, which would otherwise recombine with the hydrogen.

  7. Mohindar Singh Seehra - Wikipedia

    en.wikipedia.org/wiki/Mohindar_Singh_Seehra

    Magnetic nanoparticles. Seehra’s work includes that on CuO nanoparticles (NPs) which showed strong size and temperature dependence of magnetism in CuO NPs prepared by the sol-gel method and structural characterization via x-ray diffraction and high-resolution transmission electron microscopy.

  8. Copper(I) oxide - Wikipedia

    en.wikipedia.org/wiki/Copper(I)_oxide

    Copper (I) oxide or cuprous oxide is the inorganic compound with the formula Cu 2 O. It is one of the principal oxides of copper, the other being copper (II) oxide or cupric oxide (CuO).The compound can appear either yellow or red, depending on the size of the particles. [2] Cuprous oxide is found as the mineral cuprite.

  9. High-temperature superconductivity - Wikipedia

    en.wikipedia.org/wiki/High-temperature...

    The first breakthrough of high-temperature superconductor was discovered in 1986 by IBM researchers Georg Bednorz and K. Alex Müller. [2][3] Although the critical temperature is around 35.1 K (−238.1 °C; −396.5 °F), this new type of superconductor was readily modified by Ching-Wu Chu to make the first high-temperature superconductor with ...

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