What is claimed is:
1. An etchant, comprising:
hydrogen peroxide (H2O2); and
a mixed solution including at least one of an organic acid, an inorganic acid, and a neutral salt.
2. The etchant according to claim 1, further comprising a hydrogen peroxide (H2O2) stabilizer.
3. The etchant according to claim 1, wherein the etchant etches a doublelayered metal layer that includes a copper (Cu) layer, and a molybdenum (Mo) layer.
4. The etchant according to claim 1, wherein the etchant etches a doublelayered metal layer that includes a copper (Cu) alloy layer, and a molybdenum (Mo) layer.
5. The etchant according to claim 1, wherein the organic acid includes an acetic acid (CH3COOH).
6. The etchant according to claim 1, wherein the inorganic acid is selected from a group including sulfuric acid (H2SO4), nitric acid (HNO3), hydrochloric acid (HCl), and phosphoric acid (H3PO4).
7. The etchant according to claim 1, wherein the neutral salt is selected from a group including potassium chloride (KCl), sodium chloride (NaCl), potassium hydrogen sulfate (KHSO4), and potassium metaperiodate (KIO4).
8. A method of forming an array substrate for use in a thin film transistor liquid crystal display (TFT-LCD) device, comprising:
forming a first metal layer on a substrate;
patterning the first metal layer to form a gate line and a gate electrode extended from the gate line;
forming a gate insulation layer on the substrate to cover the patterned first metal layer;
forming an active layer on the gate insulation layer and over the gate electrode;
forming an ohmic contact layer on the active layer;
forming a second metal layer on the gate insulation layer to cover the ohmic contact layer and the active layer;
forming a third metal layer on the second metal layer;
simultaneously patterning the second metal layer and the third metal layer to form a double-layered data line, a double-layered source electrode and a double-layered drain electrode using an etchant that includes hydrogen peroxide (H2O2), a H2O2 stabilizer, and at least one of an organic acid, an inorganic acid and a neutral salt; and
forming a pixel electrode contacting the double-layered drain electrode.
9. The method according to claim 8, wherein the first metal includes copper.
10. The method according to claim 8, wherein the second metal includes molybdenum.
11. The method according to claim 8, wherein the third metal includes copper.
12. The method according to claim 8, wherein the third metal includes copper alloy.
13. The method according to claim 8, wherein the double-layered data line, double-layered source electrode and double-layered drain electrode include a copper (Cu) layer and a molybdenum (Mo) layer.
14. The method according to claim 8, wherein the double-layered data line, double-layered source electrode and double-layered drain electrode include a copper (Cu) alloy layer and a molybdenum (Mo) layer.
15. The method according to claim 8, wherein the organic acid includes an acetic acid (CH3COOH).
16. The method according to claim 8, wherein the inorganic acid is selected from a group including sulfuric acid (H2SO4), nitric acid (HNO3), hydrochloric acid (HCl), and phosphoric acid (H3PO4).
17. The method according to claim 8, wherein the neutral salt is selected from a group including potassium chloride (KCl), sodium chloride (NaCl), potassium hydrogen sulfate (KHSO4), and potassium metaperiodate (KIO4).
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for manufacturing a hydrocarbon, in which carbon dioxide is reduced to produce the hydrocarbon, the method comprising steps of:
contacting a magnesium material selected from the group consisting of metallic magnesium and a magnesium compound with liquid water and the carbon dioxide and
reducing the carbon dioxide and
producing the hydrocarbon.
2. The method for manufacturing a hydrocarbon according to claim 1, wherein
in the contacting step, the hydrocarbon is produced by bringing the magnesium material into contact with the liquid water and generating hydrogen, and combining the generated hydrogen with the reduced carbon dioxide.
3. The method for manufacturing a hydrocarbon according to claim 1, wherein the magnesium material is selected from the group consisting of magnesium oxide, magnesium hydroxide, magnesium carbonate and basic magnesium carbonate.
4. The method for manufacturing a hydrocarbon according to claim 1, wherein the magnesium material is a particulate material.
5. The method for manufacturing a hydrocarbon according to claim 1, wherein the contacting step includes a stirring step of stirring the magnesium material in particulate form together with ceramic beads, the liquid water and the carbon dioxide.
6. The method for manufacturing a hydrocarbon according to claim 1, wherein the contacting step is conducted under an atmosphere of ordinary temperatures of 5\xb0 C. to 35\xb0 C. and ordinary pressures of 0.05 Mpa to 0.15 Mpa.
7. A method for manufacturing a hydrocarbon, in which carbon dioxide is reduced to produce the hydrocarbon, the method comprising steps of:
contacting the carbon dioxide and liquid water with a single particulate active material selected from the group consisting of metallic magnesium and a magnesium compound, and
generating hydrogen,
reducing the carbon dioxide, and
combining the generated hydrogen and the reduced carbon dioxide and producing the hydrocarbon.
8. The method for manufacturing a hydrocarbon according to claim 7, wherein the contacting step includes a stirring step of stirring the single particulate material, the liquid water and the carbon dioxide together with ceramic beads.
9. The method for manufacturing a hydrocarbon according to claim 7, wherein the contacting, dissolving, absorbing and reducing steps are carried out in an atmosphere of ordinary temperatures of 5\xb0 C. to 35\xb0 C. and ordinary pressures of 0.05 Mpa to 0.15 Mpa.
10. The method for manufacturing a hydrocarbon according to claim 7, wherein the single particulate material is selected from the group consisting of magnesium oxide, magnesium hydroxide, magnesium carbonate and basic magnesium carbonate.
11. A method for manufacturing a hydrocarbon comprising steps of:
contacting a surface of a particulate magnesium material with liquid water and carbon dioxide, the particulate magnesium material being selected from the group consisting of metallic magnesium and a magnesium compound, and simultaneously:
dissolving a part of the carbon dioxide in the liquid water;
absorbing the liquid water on the surface of the particulate magnesium material, the absorbed liquid water reacting with the particulate magnesium material and generating hydrogen; and
reducing the dissolved carbon dioxide contained in the liquid water and combining the reduced carbon dioxide with the hydrogen generated on the surface of the particulate magnesium material and producing the hydrocarbon.
12. The method for manufacturing a hydrocarbon according to claim 11, wherein the contacting step includes a stirring step of stirring the particulate magnesium material, the liquid water and the carbon dioxide together with ceramic beads.
13. The method for manufacturing a hydrocarbon according to claim 11, wherein the contacting, dissolving, absorbing and reducing are carried out in an atmosphere of ordinary temperatures of 5\xb0 C., to 35\xb0 C. and ordinary pressures of 0.05 Mpa to 0.15 Mpa.
14. The method for manufacturing a hydrocarbon according to claim 11, wherein the magnesium material is selected from the group consisting of magnesium oxide, magnesium hydroxide, magnesium carbonate and basic magnesium carbonate.