CARBON DIOXIDE PHOTOREDUCTION CATALYST AND METHOD FOR PRODUCING THE SAME

• Main Authors: YAMAOKA HIROYUKI, KOKUBO KOJI
• Format: Patent
• Language: English; Japanese
• Published: 12.05.2016
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

PROBLEM TO BE SOLVED: To provide a new carbon dioxide photoreduction catalyst having high reduction efficiency of carbon dioxide, and further to provide a method of producing a carbon dioxide photoreduction catalyst having high reduction efficiency of carbon dioxide without using an expensive noble metal.SOLUTION: There is provided a carbon dioxide photoreduction catalyst containing a titanium oxide on which a vanadium oxide is supported. Further, there is provided a method for producing a carbon dioxide photoreduction catalyst in which, while bringing a titanium oxide into contact with a vanadium-containing solution prepared by dissolving a raw material for a vanadium oxide in a solvent, a vanadium oxide is supported on the titanium oxide by irradiating light of a wavelength having an energy equal or more to that of a bandgap energy of the vanadium oxide.SELECTED DRAWING: None 【課題】二酸化炭素の還元効率が高い新規な二酸化炭素光還元触媒を提供する。また、高価な貴金属を原料に使用せずに、二酸化炭素の還元効率が高い二酸化炭素光還元触媒の製造方法を提供する。【解決手段】バナジウム酸化物が担持されたチタン酸化物を含む二酸化炭素光還元触媒である。また、バナジウム酸化物の原料を溶媒に溶解して調製したバナジウム含有溶液にチタン酸化物を接触させながら、チタン酸化物のバンドギャップに相当するエネルギー以上のエネルギーを有する光を照射して、前記チタン酸化物にバナジウム酸化物を担持させることを特徴とする二酸化炭素光還元触媒の製造方法である。【選択図】なし